Amana Slow Cooker PGB58B User Manual
®
¡
Heating Air Conditioning  
A higher standard of comfort  
Gas-Electric Package  
MODELS  
PGC(24-60)B and  
PGB58B  
Unit  
Cooling and Heating  
Installation Instructions  
Table of Contents  
I.  
Unit Specifications ........................................ 2  
II. Safety Information ......................................... 6  
III. General Information ...................................... 7  
IV. Rigging and Handling ................................... 9  
V. Gas Piping .................................................... 10  
Vl. Electrical Wiring .......................................... 12  
Vll. Circulating Air and Filters .......................... 13  
VIII. Flue Vent ....................................................... 16  
IX. Condensate Drain ........................................ 16  
X. Heating Sequence of Operations............... 18  
XI. Cooling Sequence of Operations .............. 18  
XIl. Startup and Adjustment.............................. 18  
XIII. Maintenance ................................................. 24  
XIV. Accessories and Functional Parts ............ 26  
XV. Typical Cooling Performance Data ............ 27  
XVI. Wiring Diagram ............................................ 29  
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION  
ATTENTION INSTALLING PERSONNEL  
As a professional installer you have an obligation to  
know the product better than the customer. This in-  
cludes all safety precautions and related items.  
Remember, it is your responsibility to install the  
product safely and to know it well enough to be able  
to instruct a customer in its safe use.  
Prior to actual installation, thoroughly familiarize your-  
self with this Instruction Manual. Pay special atten-  
tion to all safety warnings. Often during installation or  
repair it is possible to place yourself in a position which  
is more hazardous than when the unit is in operation.  
Safety is a matter of common sense...a matter of think-  
ing before acting. Most dealers have a list of specific  
good safety practices...follow them.  
The precautions listed in this Installation Manual  
should not supersede existing practices but should  
be considered as supplemental information.  
Affix These Installation Instructions Adjacent To The Appliance.  
Amana  
May 1998 (2)  
11073904  
Fayetteville, TN 37334  
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MODEL  
Cooling Capacity Btuh  
SEER  
PGC42B0902A  
42,000  
PGC42B1152A  
42,000  
PGC48B0902A  
48,000  
PGC48B1152A  
48,000  
PGC60B0902A  
60,000  
PGC60B1352A  
60,000  
12.20  
12.20  
12.00  
12.00  
12.00  
12.00  
Heating  
Input Btuh  
Output Btuh  
AFUE  
90,000  
72,000  
81.4  
115,000  
89,000  
79.9  
90,000  
72,000  
81.4  
115,000  
89,000  
79.9  
90,000  
72,000  
81.4  
135,000  
108,000  
80.5  
Temperature Rise °F  
Number of Burners  
Compressor  
R.L. Amps  
25-55  
4
40-70  
5
25-55  
4
40-70  
5
25-55  
5
40-70  
6
22  
107  
22  
107  
21.8  
105  
21.8  
105  
28.8  
169  
28.8  
169  
L.R. Amps  
Condenser Coil  
Face Area (sq. ft.)  
Rows Deep  
17.2  
2
17.2  
2
17.2  
2
17.2  
2
17.2  
2
17.2  
2
Fins/Inch  
13  
13  
17  
17  
17  
17  
Condenser Fan  
Diameter (in.)  
CFM  
24  
3500  
24  
3500  
24  
3700  
24  
3700  
24  
4700  
24  
4700  
Condenser Fan Motor  
Horsepower  
R.L. Amps  
L.R. Amps  
1/4  
1.5  
3.4  
1/4  
1.5  
3.4  
1/2  
1.5  
3.6  
1/2  
1.5  
3.6  
1/3  
2.5  
6.4  
1/3  
2.5  
6.4  
Blow e r Motor  
Horsepower  
R.L. Amps  
3/4  
5
3/4  
5
3/4  
5
3/4  
5
1
7
1
7
Protected by redundant electronic control circuts  
L.R. Amps  
Blower Wheel Dia. x Width (in.)  
Rated CFM, Cooling  
Max. External  
10x10  
1450  
0.8" wc  
10x10  
1450  
0.8" wc  
10x10  
1700  
0.8" wc  
10x10  
1700  
0.8" wc  
11x8  
1750  
0.8" wc  
11x8  
1750  
0.8" wc  
Combustion Blower  
Diameter x Width (in.)  
No.  
4 x 1.25  
1
4 x 1.25  
1
4 x 1.25  
1
4 x 1.25  
1
4 x 1.25  
1
4 x 1.25  
1
Condenser Blower Motor  
H.P.  
F.L. Amps.  
0.03125  
0.5  
0.03125  
0.5  
0.03125  
0.5  
0.03125  
0.5  
0.03125  
0.5  
0.03125  
0.5  
Press. Switch Setting (" W.C.)  
Ignition - Lockout Timing (sec.)  
Flame Sense Current (microamps)  
-0.65  
4
-0.65  
4
-0.65  
4
-0.65  
4
-0.65  
4
-0.65  
4
Minimum  
Maximum  
1
6
1
6
1
6
1
6
1
6
1
6
Evaporator Coil  
Face Area (Sq. Ft.)  
Rows Deep  
5.7  
2
15  
5.7  
2
15  
5.7  
3
15  
5.7  
3
15  
5.7  
3
15  
5.7  
3
15  
Fins/Inch  
External Filter Size (Sq. Ft.)  
Drain Line Size (in.)  
Expansion Device (Cooling)  
Refrigerant Charge  
Power Supply**  
5.3  
3/4  
Capillary  
5.3  
3/4  
Capillary  
5.3  
3/4  
TEV  
5.3  
3/4  
TEV  
5.3  
3/4  
TEV  
5.3  
3/4  
TEV  
Refer to unit name plate for correct charge  
208/230-60-1  
208/230-60-1  
208/230-60-1  
208/230-60-1  
208/230-60-1  
208/230-60-1  
Min. Circuit Ampacity  
Max. Overcurrent Device  
Electrical Entrance Size  
34  
50  
34  
50  
39.5  
50  
39.5  
50  
49.7  
70  
49.7  
70  
Power Supply  
Low Voltage  
Approx. Shipping Weight (lbs)  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
7/8"  
521  
7/8"  
527  
7/8"  
526  
7/8"  
526  
7/8"  
531  
7/8"  
531  
1) United States Installation  
2) Specification subject to change without notice. See sales specification sheets for certain BTUH capacities.  
3) This PGC series complies with requirements embodied in the American National Standard ANSI-Z21.47 Central Furnaces.  
4) Filters are not supplied with units, but filters must be installed in the unit filter rack or in the return air system.  
** While the above data is presented as a guide, it is important to electrically connect the unit and properly size overcurrent protection and wires in accordance with the  
National Electrical Code and all existing local codes.  
Operating tolerance: Minus 5% on 208 VAC, Plus 10% on 208 VAC and 230 VAC, Minus 10% on 230 VAC  
Table 1B  
Gas Pack Specifications  
3
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MODEL  
PGB58B0902A  
59,500  
PGB58B1152A  
59,500  
PGB58B1352A  
59,500  
Cooling Capacity Btuh  
SEER  
11.10  
11.10  
11.10  
Heating  
Input Btuh  
90,000  
72,000  
81.4  
115,000  
92,000  
79.9  
135,000  
108,000  
80.5  
Output Btuh  
AFUE  
Temperature Rise °F  
Number of Burners  
Compressor  
25-55  
4
25-55  
4
25-55  
4
R.L. Amps  
28.8  
169  
28.8  
169  
28.8  
169  
L.R. Amps  
Condenser Coil  
Face Area (sq. ft.)  
Rows Deep  
17.2  
2
17.2  
2
17.2  
2
Fins/Inch  
17  
17  
17  
Condenser Fan  
Diameter (in.)  
24  
24  
24  
CFM  
4700  
4700  
4700  
Condenser Fan Motor  
Horsepower  
1/3  
2.5  
6.4  
1/3  
2.5  
6.4  
1/3  
2.5  
6.4  
R.L. Amps  
L.R. Amps  
Blower Motor  
Horsepower  
3/4  
5.6  
3/4  
5.6  
3/4  
5.6  
R.L. Amps  
L.R. Amps  
12.9  
12.9  
12.9  
Blower Wheel Dia. x Width (in.)  
Rated CFM, Cooling  
Max. External  
11X8  
1750  
0.5" wc  
11X8  
1750  
0.5" wc  
11X8  
1750  
0.5" wc  
Combustion Blower  
Diameter x Width (in.)  
No.  
4 x 1.25  
1
4 x 1.25  
1
4 x 1.25  
1
Condenser Blower Motor  
H.P.  
1/32  
0.5  
1/32  
0.5  
1/32  
0.5  
F.L. Amps.  
Press. Switch Setting (" W.C.)  
Ignition - Lockout Timing (sec.)  
Flame Sense Current (microamps)  
Minimum  
-0.65  
4
-0.65  
4
-0.65  
4
1
6
1
6
1
6
Maximum  
Evaporator Coil  
Face Area (Sq. Ft.)  
Rows Deep  
5.7  
4
5.7  
4
5.7  
4
Fins/Inch  
15  
15  
15  
External Filter Size (Sq. Ft.)  
Drain Line Size (in.)  
Expansion Device (Cooling)  
Refrigerant Charge  
Power Supply**  
Min. Circuit Ampacity  
Max. Overcurrent Device  
Electrical Entrance Size  
Power Supply  
3/4  
3/4  
3/4  
TEV  
TEV  
TEV  
Refer to unit name plate for correct charge  
208/230-60-1  
208/230-60-1  
33.75  
208/230-60-1  
33.75  
50  
33.75  
50  
50  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
1 1/4", 1 1/2", 2"  
Low Voltage  
7/8"  
531  
7/8"  
531  
7/8"  
531  
Approx. Shipping Weight (lbs)  
Table 1C  
Gas Pack Specifications  
4
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Nominal  
Cooling  
Capacity  
(MBh)  
Nominal  
Heating  
Model  
Nominal  
Cooling  
CFM  
Nominal Nominal  
Temp.  
Speed  
Taps  
Capacity Heating Fan Only Rise (°F)  
(Input)  
CFM  
(W1)  
930  
(Y+G)  
850  
(G)  
570  
570  
570  
570  
570  
815  
815  
815  
815  
815  
815  
Cool  
A
Heat  
A
PGC24B0452A  
PGC24B0702A  
PGC30B0702A  
PGC36BO702A  
PGC36B0902A  
PGC42B0902A  
PGC42B1152A  
PGC48B0902A  
PGC48B1152A  
PGC60B0902A  
PGC60B1352A  
24000  
24000  
30000  
36000  
36000  
42000  
42000  
48000  
48000  
60000  
60000  
45000  
70000  
70000  
70000  
90000  
90000  
115000  
90000  
115000  
90000  
135000  
35  
45  
45  
45  
55  
40  
55  
40  
55  
40  
55  
850  
1140  
1140  
1140  
1350  
1650  
1530  
1650  
1530  
1650  
1900  
A
B
1100  
1300  
1300  
1450  
1450  
1700  
1700  
1750  
1750  
B
B
C
C
A
B
C
A
A
B
B
A
B
B
A
A
A
B
1. Installation is to be adjusted to obtain temperature rise within the range specified on the rating plate.  
2. The temperature rise is for units installed at 0-2000 feet. At higher altitudes, a properly derated unit will have  
approximately the same temperature rise and CFM.  
3. The chart is applicable for both vertical and horizontal airflow.  
4. All speed tap settings are factory selected according to unit size.  
5. Data shown without filters. Consult filter manufacturer for pressure drop to be added.  
6. Motor is constant CFM for external static pressures 0.1" to 0.8" W.C.  
7. Maximum External Pressure Limits  
PGC 24-42 0.8" W.C.  
PGC46 & 60 1.0 W.C.  
Table 2A  
PGC Temperature Rise Table  
External Static Pressure, Inches Water Column  
Motor  
Speed  
Hi  
Med  
Lo  
Hi  
Med  
Lo  
0.1  
0.2  
0.3  
0.4  
0.5  
0.6  
0.7  
0.8  
Model  
CFM  
2160  
1750  
1490  
2160  
1750  
1490  
2160  
1750  
1490  
RISE CFM  
RISE CFM  
RISE CFM  
RISE CFM  
RISE CFM  
RISE CFM  
RISE CFM  
RISE  
36  
45  
52  
46  
57  
67  
54  
67  
31  
38  
45  
---  
49  
57  
46  
57  
67  
2120  
1750  
1480  
2120  
1750  
1480  
2120  
1750  
1480  
31  
39  
45  
---  
49  
58  
47  
58  
68  
2080  
1700  
1470  
2080  
1700  
1470  
2080  
1700  
1470  
32  
39  
45  
41  
50  
58  
48  
59  
68  
2030  
1680  
1450  
2030  
1680  
1460  
2030  
1680  
1460  
33  
40  
46  
42  
51  
58  
49  
60  
68  
1990  
1680  
1440  
1990  
1650  
1440  
1990  
1650  
1440  
34  
40  
46  
43  
52  
59  
50  
61  
69  
1945  
1615  
1415  
1945  
1615  
1415  
1945  
1615  
1415  
34  
41  
47  
44  
53  
60  
51  
62  
---  
1900  
1575  
1360  
1900  
1575  
1360  
1900  
1575  
1360  
35  
42  
49  
45  
54  
63  
53  
63  
---  
1835  
1490  
1280  
1835  
1470  
1280  
1835  
1490  
1280  
PGB58B0902C  
PGB58B1152C  
PGB58B1352C  
NOTE:  
Hi  
Med  
Lo  
---  
1. All airflow is dry coil.  
2. Installation is to be adjusted to obtain temperatures rise within the range specified on the rating plate.  
3. The above chart is for information only. For satisfactory operation, external static pressure should not exceed value shown on the rating  
plate. The shaded area ( ) indicates in excess of maximum external static pressure allowable when heating.  
4. This chart is for units installed at 0-2000 feet. At higher altitudes, a properly derated unit will have approximately the same temperature  
rise at a particular CFM, while ESP at that CFM will be lower.  
5. Cooling operation may require a different fan speed than heating operation. For details, see Wiring Diagrams.  
6. Above chart is applicable for both vertical and horizontal airflow.  
Table 2B  
PGB CFM& Temperature Rise vs. External Static Pressure Table  
5
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II. Safety Information  
WARNING  
Do not store gasoline or other flammable  
vapors and liquids in the vicinity of this  
or any other appliance.  
Important  
To The Installer  
Before installing this unit please read this manual to fa-  
miliarize yourself with the specific items which must be  
adhered to such as maximum external static pressure  
to unit, air temperature rise, minimum or maximum CFM  
and motor speed connections. Affix these Installation  
Instructions adjacent to the appliance.  
If you smell gas:  
• Extinguish any open flame.  
• Do not try to light appliance.  
• Do not touch any electrical switch: do not use any  
phone in building.  
• Immediately call gas supplier from a neighbor’s  
phone. Follow gas supplier’s instructions.  
To The Owner  
It is important that you complete the owner registration  
card and mail it today. This will assist Amana in contact-  
ing you if any service or warranty information should  
change in the future. When completing the registration  
card, be sure to include the Model, Manufacturing and  
Serial Numbers, plus the installation date.  
• If gas supplier cannot be reached, call fire depart-  
ment.  
WARNING  
Improper installation, adjustment, alter-  
ations, service or maintenance can cause  
property damage, personal injury, or  
death. Follow all procedures in this  
manual. For assistance or additional in-  
formation, contact a qualified installer,  
service agency, or gas supplier.  
Your warranty certificate is also supplied with the unit.  
Read the warranty carefully and note what is covered.  
Keep the warranty certificate in a safe place so you can  
find it if necessary.  
If additional operating Instructions are required, call the  
dealer where the purchase was made. Keep this litera-  
ture in a safe place for future reference.  
WARNING  
WARNING  
This product contains or produces a  
chemical(s) which may cause death or  
serious illness and which are known by  
the State of California to cause cancer,  
birth defects or other reproductive harm.  
Should overheating occur or the gas sup-  
ply fail to shut off, turn off the manual  
gas control valve to the furnace before  
shutting off the electrical supply.  
CAUTION  
CAUTION  
On PGC48 - 60 and PGB58 Only: To avoid  
damage to the compressor, engage the  
electrical disconnect switch to the com-  
pressor unit four hours prior to operat-  
ing air conditioner after the electrical dis-  
connect is off for a prolonged period of  
time (during vacation, etc.). This time  
lapse allows the compressor crankcase  
to attain a proper operating temperature.  
This unit should not be used as a “con-  
struction heater” during the finishing  
phases of construction on a new struc-  
ture. This type of use may result in pre-  
mature failure of the unit due to extremely  
low return air temperatures and exposure  
to very dirty atmospheres.  
WARNING  
If the information in this manual is not  
followed exactly, a fire or explosion may  
result causing property damage, per-  
sonal injury, or death.  
6
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Locating The Unit  
Ground Level Installations Only:  
• When the unit is installed on the ground adjacent to  
the building, a level concrete (or equal) base is rec-  
ommended. Prepare a base the same physical size  
as the unit or slightly larger and 3 inches thick.  
WARNING  
To avoid possible equipment damage,  
fire, personal injury, or death, the follow-  
ing points must be observed when install-  
ing the unit.  
• The base should also be located where no run-off  
of water from higher ground can collect in the unit.  
• The feet on the unit may not be removed.  
All Installations:  
• For proper flame pattern within the heat exchanger  
and proper condensate drainage, the unit must be  
mounted level.  
Rooftop Installations Only:  
• To avoid possible property damage or personal in-  
jury, the roof must have sufficient structural strength  
to carry the weight of the unit(s) and snow or water  
loads as required by local codes.  
• The unit should be as centralized as is practical with  
respect to the air distribution system. This unit is for  
outdoor installation ONLY!  
• If horizontal air delivery is used, the unit may be in-  
stalled directly on wood floors or on Class A, Class  
B, or Class C roof covering material, provided that  
the feet on the unit are not removed.  
• The flue outlet hood must be at least 12 inches from  
any opening through which flue gases could enter a  
building, and at least three feet above any forced air  
inlet located within ten feet. The economizer/manual  
outdoor air intake/motorized outdoor air intake and  
combustion air inlet mounted on the unit are not af-  
fected by this restriction.  
• To avoid possible personal injury, a safe, flat sur-  
face for service personnel should be provided.  
• If vertical air discharge is used and the unit is in-  
stalled on combustible flooring or class A, B, or C  
roofing material, then the Amana roof curb (PRC3A  
or PRC5A) listed on the unit nameplate is required.  
• To avoid possible corrosion of the heat exchanger,  
do not locate the unit in an area where the outdoor  
air (i.e., combustion air for the unit) will be frequently  
contaminated by compounds containing chlorine or  
fluorine. Common sources of such compounds in-  
clude swimming pools and chlorine bleaches, paint  
stripper, adhesives, paints, varnishes, sealers,  
waxes (which are not yet dried) and solvents used  
during construction and remodeling. Various com-  
mercial and industrial processes may also be  
sources of chlorine/fluorine compounds.  
III. General Information  
WARNING  
Improper installation, repair, operation or  
maintenance of this product may result  
in property damage, personal injury, or  
death from hazards such as fire, explo-  
sions, smoke, soot, condensation, elec-  
tric shock or carbon monoxide.  
• To avoid possible illness or death of the building oc-  
cupants, do NOT locate outside air intake device  
(economizer, manual outdoor air intake, motorized  
outdoor air intake) too close to an exhaust outlet,  
gas vent termination, or plumbing vent outlet. For  
specific distances required, consult local codes.  
This unit is approved only for an outdoor installation. To  
assure that your unit operates safely and efficiently, it  
must be installed, operated, and maintained in accor-  
dance with these installation and operating instructions,  
all local building codes and ordinances, or in their ab-  
sence, with the latest edition of the National Fuel Gas  
Code. (ANSI Z223.1).  
• Allow clearances from the enclosure as shown in  
Figure 1 for fire protection, proper operation, and  
service access. These clearances must be perma-  
nently maintained.  
• The combustion air inlet and flue outlet hoods on  
the front of the unit must never be obstructed. If used,  
do not allow the economizer/manual outdoor air  
damper/ motorized outdoor air damper to become  
blocked by snow or debris. In some climates or lo-  
cations, it may be necessary to elevate the unit to  
avoid these problems.  
The heating and cooling capacities of the unit should be  
greater than or equal to the design heating and cooling  
loads of the area to be conditioned. The loads should  
be calculated by an approved method or in accordance  
with ASHRAE Guide or Manual J - Load Calculations  
published by the Air Conditioning Contractors of America.  
• When the unit is heating, the temperature of the re-  
turn air entering the unit must be between 50° F and  
100° F.  
Obtain from:  
American National Standards Institute  
1430 Broadway  
New York, NY 10018  
7
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Figure 1  
Required Clearances For All Installations  
8
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Transportation Damage  
IV. Rigging and Handling  
All units are securely packed in shipping cartons ap-  
proved by the International Safe Transit Association. The  
carton should be checked upon arrival for external dam-  
age. If damage is found, a request for inspection by car-  
rier agent should be made in writing immediately.  
CAUTION  
To prevent possible property damage, the  
unit should remain in an upright position  
during all rigging and moving operations.  
To facilitate lifting and moving when a  
crane is used, place the unit in an ad-  
equate cable slide.  
The unit should be carefully inspected upon arrival for  
damage and bolts or screws which may have loosened  
in transit. In the event of damage, the consignee should:  
1. Make notation on delivery receipt of any visible dam-  
age to shipment or container.  
2. Notify carrier promptly and request an inspection.  
Important: If using bottom discharge with roof curb,  
ductwork should be attached to the curb prior to install-  
ing the unit. Ductwork dimensions are shown in Amana  
Roof Curb Installation Instructions.  
3. In case of concealed damage, carrier should be no-  
tified as soon as possible-preferably within 5 days.  
4. File the claim with the following supporting docu-  
ments within the 9-month statute of limitations.  
Refer to the Amana Roof Curb Installation Instructions  
for proper curb installation. Curbing must be installed in  
compliance with the National Roofing Contractors As-  
sociation Manual.  
a. Original Bill of Lading, certified copy, or indemnity  
bond.  
b. Original paid freight bill or indemnity in lieu thereof.  
Lower unit carefully onto roof mounting curb. While rig-  
ging unit, center of gravity will cause condenser end to  
be lower than supply air end.  
c. Original invoice or certified copy thereof, showing  
trade and other discounts or reductions.  
d. Copy of the inspection report issued by carrier  
representative at the time damage is reported to  
the carrier. The carrier is responsible for making  
prompt inspection of damage and for a thorough  
investigation of each claim. The distributor or  
manufacturer will not accept claims from dealers  
for transportation damage.  
If using a fork lift, see Figure 2 for location of fork prongs.  
Make certain prongs support unit weight.  
NOTE: When inspecting the unit for transportation dam-  
age, remove all packaging materials. Follow local codes  
when disposing or recycling the packaging material.  
Locating The Thermostat  
The thermostat should be mounted 5 feet above the floor,  
on a vibration free inside wall in a room or a hallway that  
has good air circulation.  
Movement of air should not be obstructed by furniture,  
door, draperies, etc. The thermostat should not be  
mounted where it will be affected by drafts, hot or cold  
water pipes or air ducts in walls, radiant heat from fire-  
place, lamps, the sun, television, etc. Consult the In-  
struction Sheet packaged with the thermostat for mount-  
ing instructions.  
All units have one stage of heating and one stage of  
mechanical cooling. Units which will have economizers  
may use thermostats with one or two stages of cooling.  
Figure 2  
Rigging  
9
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Gas Piping  
V. Gas Piping  
IMPORTANT NOTE: To avoid possible unsatisfactory  
operation or equipment damage due to under firing of  
equipment, do not undersize the natural gas/propane  
piping from the meter/tank to the furnace. When sizing  
a trunk line as shown in Table 4, include all appliances  
on that line that could be operated simultaneously.  
IMPORTANT NOTE: This furnace is factory set to oper-  
ate on natural gas at the altitudes shown on the rating  
plate. If operation at higher altitudes and/or propane gas  
operation is required, obtain and install the proper con-  
version kit(s) before operating this furnace. Failure to  
do so may result in unsatisfactory operation and/or equip-  
ment damage. (High altitude kits are for U.S. installa-  
tions only.)  
The rating plate is stamped with the model number, type  
of gas and gas input rating. Make sure the furnace is  
equipped to operate on the type of gas available.  
The rating plate is stamped with the model number, type  
of gas and gas input rating. Make sure the furnace is  
equipped to operate on the type of gas available.  
The gas line installation must comply with local codes,  
or in the absence of local codes, with the latest edition  
of the National Fuel Gas Code (ANSI Z223.1).  
INLET GAS PRESSURE  
Natural  
Min. 5.0" W.C., Max. 10.0" W.C.  
Connecting The Gas Piping - Natural Gas  
Propane  
Min. 11.0" W.C., Max. 14.0" W.C.  
Natural Gas Capacity of Pipe  
in Cubic Feet of Gas Per Hour (CFH)  
Inlet Gas Pressure Must Not Exceed the Maximum Value Shown  
in Table 3.  
Nominal Black Pipe Size (inches)  
Length of  
Pipe in Feet  
1/2  
132  
92  
73  
63  
56  
50  
46  
43  
40  
38  
3/4  
278  
190  
152  
130  
115  
105  
96  
1
1
1/4  
1050  
730  
590  
500  
440  
400  
370  
350  
320  
305  
1
1/2  
1600  
1100  
980  
760  
670  
610  
560  
530  
490  
460  
Table 3  
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
520  
350  
285  
245  
215  
195  
180  
170  
160  
150  
The minimum supply pressure should not vary from that  
shown in the table above because this could prevent  
the furnace from having dependable ignition. In addi-  
tion, gas input to the burners must not exceed the rated  
input shown on the rating plate. Overfiring of the fur-  
nace could result in premature heat exchanger failure.  
90  
84  
79  
Pressure = .50 PSIG or less and Pressure Drop of 0.3" W.C. (Based  
on 0.60 Specific Gravity Gas)  
High Altitude Derate (US. Installations Only -  
Canadian Installations to 4500 Feet Only)  
When this furnace is installed at altitudes above 2000  
feet, the furnace input must be derated 4% for each 1000  
feet above sea level because the density of the air is  
reduced.  
Btuh Furnace Input  
CFH=  
Calorific Value of Gas  
Table 4  
In some areas the gas supplier will derate the heating Refer to Figure 3 for the general layout at the furnace.  
value of the gas at a rate of 4% for each 1000 feet above The following rules apply:  
sea level. If this is not done, smaller orifices will be re-  
1. Use black iron or steel pipe and fittings for the build-  
quired at altitudes above 3500 feet (non-derated natu-  
ing piping.  
ral gas) or 4500 feet (non-derated propane gas).  
2. Use pipe joint compound on male threads only. Pipe  
A different pressure switch will be required at altitudes  
joint compound must be resistant to the action of  
more than 4000 feet above sea level. This is required  
the fuel used.  
regardless of the heat content of the fuel used.  
3. Use ground joint unions.  
High altitude kits can be purchased depending on the  
4. Install a drip leg to trap dirt and moisture before it  
can enter the gas valve. The drip leg must be a mini-  
mum of three inches long.  
altitude and usage of propane or natural gas. Refer to  
the high altitude instruction manual included with this  
furnace to determine which high altitude components to  
use.  
5. Use two pipe wrenches when making connection to  
the gas valve to keep it from turning.  
Adjustment of the manifold pressure to a lower pres-  
sure reading than what is specified on the furnace name-  
plate is not a proper derate procedure. With a lower den-  
sity of air and a lower manifold pressure at the burner  
orifice, the orifice will not aspirate the proper amount of  
air into the burner. This can cause incomplete combus-  
tion of the gas, flashback, and possible yellow tipping.  
6. Install a manual shut-off valve in a convenient loca-  
tion (within six feet of unit) between the meter and  
the unit.  
7. Tighten all joints securely.  
10  
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WARNING  
To avoid personal injury or property dam-  
age, be sure there is no open flame in the  
vicinity during air bleeding procedure.  
There will be air in the gas supply line after testing for  
leaks on a new installation. Therefore, the air must be  
bled from the line by cracking open the ground joint union  
until pure gas is expelled. Tighten union and wait for  
five minutes until all gas has been dissipated in the air.  
Be certain there is no open flame in the vicinity during  
air bleeding procedure. The unit is placed in operation  
by closing the main electrical disconnect switch for the  
furnace.  
Figure 3  
Proper Piping Practice  
Tanks And Piping for Propane Gas Units  
Checking The Gas Piping  
WARNING  
Personal Injury Hazard  
CAUTION  
Failure to detect a propane gas leak could  
result in an explosion or fire which could  
cause death, serious personal injury, or  
property damage.  
To avoid the possibility of personal in-  
jury, property damage or fire, the follow-  
ing instructions must be performed re-  
garding gas connections and pressure  
testing:  
Iron oxide (rust) can reduce the level of  
odorant in propane gas. A gas detecting  
device is the only reliable method to de-  
tect a propane gas leak. Contact the lo-  
cal propane supplier about installing a  
warning device to sound an alert if a gas  
leak should develop.  
• This unit and its gas connections must  
be leak tested before placing in opera-  
tion. Because of the danger of explosion  
or fire, never use a match or open flame  
to test for leaks. Never exceed speci-  
fied pressures for testing. Higher pres-  
sure may damage gas valve and cause  
overfiring which may result in heat fail-  
ure.  
All propane gas equipment must conform to the safety  
standards of the National Board of Fire Underwriters (See  
NBFU Manual 58).  
• This unit and shut-off valve must be dis-  
connected from the gas supply during  
any pressure testing of that system at  
test pressures in excess of 1/2 PSIG  
(3.48 kPa).  
For satisfactory operation, propane gas pressure must  
be 10 inch W.C. at the furnace manifold with all gas ap-  
pliances in operation. Maintaining proper gas pressure  
depends on three main factors:  
1. Vaporization rate, which depends on (a) tempera-  
ture of the liquid, and (b) wetted surface area of the  
container or containers.  
• This unit must be isolated from the gas  
supply system by closing the manual  
shut-off valve during any pressure test-  
ing of the gas supply piping system at  
test pressures equal to or less than 1/2  
PSIG (3.48 kPa).  
2. Proper pressure regulation. (Two-stage regulation  
is recommended from the standpoint of both cost  
and efficiency.)  
3. Pressure drop in lines between regulators, and be-  
tween second stage regulator and the appliance.  
Pipe size required will depend on length of pipe run  
and total load of all appliances.  
Complete information regarding tank sizing for vapor-  
ization, recommended regulator settings and pipe siz-  
ing is available from most regulator manufacturers and  
propane gas suppliers.  
11  
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Special pipe dope must be used when assembling pip-  
ing for this gas as it will quickly dissolve white lead or  
most standard commercial compounds. Shellac base  
compounds resistant to the actions of liquefied petro-  
leum gases such as Gasolac, Static, Clyde or John  
Crane are satisfactory.  
WARNING  
Failure to follow the instructions on Page  
6 of this manual when the presence of  
gas is suspected could result in death or  
serious personal injury. An undetected  
gas leak would create a danger of explo-  
sion or fire.  
Please refer to Figure 4 for typical propane gas instal-  
lations.  
If the propane gas furnace is installed in  
an excavated area or a confined space, it  
is strongly recommended contacting a  
propane gas supplier about installing a  
warning device to warn of a gas leak.  
Propane gas is heavier than air and any  
leaking gas can settle in low areas or  
confined areas.  
Figure 4  
Typical Propane Gas Piping  
Propane gas odorant may fade, making  
the gas undetectable except with a  
warning device.  
Vl. Electrical Wiring  
WARNING  
To avoid personal injury or death due to  
electrical shock, disconnect the electri-  
cal power before electrically connecting  
the unit.  
The units are designed for operation on 60 hertz current  
and at voltages as shown on the rating plate. All internal  
wiring in the unit is complete. It is necessary to bring in  
the power supply to the contactor as shown on the unit  
wiring diagram which is supplied with each unit. The 24V  
wiring must be connected between the unit control panel  
and the room thermostat. Refer to Figure 5 for location  
of low voltage terminal board and Figure 6 for proper  
thermostat wiring.  
Low Voltage  
Board  
Table 5  
Propane Pipe Sizing  
Figure 5  
Low Voltage Control Box  
12  
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Please refer to the unit wiring diagram for electrical con-  
nections. When installed, the unit must be electrically  
grounded in accordance with local codes or in the ab-  
sence of local codes with the latest edition of National  
Electrical Code, ANSI/NFPA No. 70.  
CAUTION  
To prevent improper and dangerous op-  
eration due to wiring errors, label all wires  
prior to disconnection when servicing  
controls. Verify proper operation after  
servicing.  
WARNING  
To avoid death or personal injury due to  
electrical shock, wiring to the unit must  
be properly grounded.  
Vll. Circulating Air and Filters  
Airflow Conversion  
Units can easily be converted from horizontal to vertical  
airflow delivery.  
CAUTION  
Units will ship from the factory ready for horizontal air-  
flow. If conversion to vertical airflow is necessary, pro-  
ceed as follows:  
To avoid personal injury or property dam-  
age due to fire, use only copper conduc-  
tors.  
IMPORTANT: Be sure to save the flue hood assembly  
(cardboard box) which is shipped in the return air com-  
partment of the unit.  
The best protection for the wiring is the smallest fuse or  
breaker which will hold the equipment on the line during  
normal operation without nuisance trips. Such a device  
will provide maximum circuit protection. DO NOT EX-  
CEED THE MAXIMUM OVERCURRENT DEVICE SIZE  
SHOWN ON UNIT DATA PLATE.  
• Remove panels from the bottom of the unit, saving  
the mounting screws.  
• Remove insulation from outside of supply duct cover.  
No insulation should face outside.  
Be sure line voltage connections are made through  
weatherproof fittings. All exterior power supply and  
ground wiring must be in approved weatherproof con-  
duit. Low voltage wiring from the unit control panel to  
the thermostat requires coded cable. For ground level  
and rooftop wiring refer to Figure 8.  
• Relocate the panels on to the side of the unit, se-  
curing with the screws removed earlier.  
• The unit will deliver the same amount of air whether  
the airflow is vertical or horizontal. For details, see  
the fan tables on Pages 2 - 5.  
Unit Voltage  
The unit transformer is factory connected for 230V op-  
eration. If the unit is to operate on 208V, reconnect the  
transformer primary lead and induced draft blower mo-  
tor leads as shown on the unit wiring diagram.  
Heat Anticipator Setting  
The heat anticipator in the room thermostat must be  
correctly adjusted to obtain the proper number of heat-  
ing cycles per hour and to prevent the room tempera-  
ture from overshooting the room thermostat setting. Heat  
anticipator must be set at 0.8 amps.  
Figure 7  
Airflow Conversion  
Ductwork  
CAUTION  
To avoid possible fire, the cardboard  
shipping support (located behind the  
supply panel) must be removed before  
operation.  
Figure 6  
Typical Thermostat and Unit 24 V Wiring  
Hookup  
IMPORTANT: Be sure to save the flue hood assembly  
which is shipped in a cardboard box in the return air  
compartment of the unit.  
13  
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Typical Wiring  
(Ground Level)  
Disconnect Switch  
High Voltage Source  
High Voltage  
Entrance  
Low Voltage  
Entrance  
Typical Wiring  
(Rooftop)  
Rooftop  
Curb  
Disconnect Switch  
Junction  
Box  
High Voltage Source  
High Voltage  
Entrance  
Low Voltage  
Entrance  
Figure 8  
Typical Electrical Wiring  
14  
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Duct systems and register sizes must be properly de- Important: If you will be using the Over/Under Transition  
signed for the C.F.M. and external static pressure rating Kit, (PDTROU3A or PDTROU5A) you cannot use the  
of the unit. Ductwork should be designed in accordance unit filter rack.  
with the recommended methods of Air Conditioning Con-  
If you are using the Over/Under transition kit or are sim-  
tractors of America Manual D (Residential) or Manual Q  
ply choosing not to use this filter rack, the filter(s) may  
(Commercial). All ductwork exposed to the outdoors must  
be located in the return air duct(s) or return air filter  
include a weatherproof barrier and adequate insulation.  
grille(s). Filters installed external to the unit should be  
A duct system should be installed in accordance with sized in accordance with their manufacturer recommen-  
Standards of the National Board of Fire Underwriters for dations. If you choose to use a throwaway filter it should  
the Installation of Air Conditioning, Warm Air Heating be sized for a maximum face velocity of 300 feet per  
and Ventilating Systems, pamphlets No. 90A and 90B. minute.  
The warm air supply duct from the unit through a wall Important: The PGC 42 and 48 package units contain  
fabricated of combustible material may be installed with- an evaporator drip pan installed on the return air side of  
out clearance. However, minimum clearances for the unit the indoor coil.  
must be observed as shown in Section III.  
If an economizer is to be installed on these units, the  
It is recommended that the outlet duct be provided with drip pan must be removed. The pan can be removed by  
an access panel. This access should be large enough cutting it away. It will not be needed when an econo-  
to inspect the air chamber downstream from the heat mizer is installed.  
exchanger for any smoke or combustion gas leaks. A  
cover should be tightly attached to prevent air leaks.  
from filter kit PFK5B1 or PFK5B6. The filters in these  
If filters are to be installed on these units, they must be  
For horizontal airflow, duct flange dimensions on the unit kits are sized to fit with the drip pan in place.  
are shown in Section III.  
Filter Installation  
For vertical airflow, the ductwork should be attached to  
the roof curb prior to installing the unit. Ductwork dimen-  
sions are shown in the Amana PRC roof curb installa-  
tion manual.  
Important: When installing a filter, always make certain  
the air flow arrows on the filter point toward the indoor  
blower.  
To install a filter in the filter rack, proceed as follows:  
1. Disconnect power to the unit.  
If desired, supply and return duct connections to the unit  
may be made with flexible connections to reduce pos-  
sible noise transmission.  
2. Locate the filter access door above the return air  
opening. See Figure 9.  
Filters  
Filter Access Door  
WARNING  
Never operate furnace without a filter in-  
stalled as dust and lint will build up on  
internal parts resulting in loss of effi-  
ciency, equipment damage, and possible  
fire.  
A return air filter is not supplied with this unit; however,  
there must be a means of filtering all of the return air.  
For your convenience, this unit contains a factory in-  
stalled filter rack. If you choose to install the return air  
filter in the unit filter rack, use the appropriate Amana  
filter kit or a permanent filter that is properly sized as  
follows:  
Figure 9  
Filter Access Door  
3. Remove the four 5/16" sheet metal screws and set  
the filter access door aside.  
4. Insert the filter into the filter rack channels and lower  
into place. Make sure the filter slides completely to  
the bottom so no part of the filter remains outside  
the back panel.  
Required Permanent  
Model  
Amana Kit #  
Filter Size  
5. Return the filter access door to its original position  
and secure it with the four sheet metal screws.  
PFK3A1 or  
PFK3A6  
PGC24, 30, or 36  
26" x 20" x 1"  
PGC42, 48, 60  
or PGB58  
PFK5B1 or  
PFK5B6  
6. a. If you are using an Amana filter kit, affix the FIL-  
TER ACCESS label to the filter access door.  
32-5/8" x 22-3/8" x 1"  
The Amana filter kit includes a permanent filter, door  
label, and installation instructions. PFK3A1 and PFK5B1  
contain filter, label, and instructions for one unit. PFK3A6  
and PFK5B6 contain filters, labels, and instructions for  
six units.  
b. If you are NOT using an Amana filter kit, clearly  
mark the filter access door “FILTER ACCESS”.  
7. Reconnect the power.  
NOTE: A clean permanent filter installed as described  
above will have a negligible effect on air flow.  
15  
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3. Insofar as is practical, close all building doors and  
windows and all doors between the space in which  
the appliances remaining connected to the common  
venting system are located and other spaces of the  
building. Turn on clothes dryers and any appliance  
not connected to the common venting system. Turn  
on any exhaust fans, such as the range hoods and  
bathroom exhausts, so they will operate at maximum  
speed. Do not operate a summer exhaust fan. Close  
fireplace dampers.  
VIII. Flue Vent  
Flue Hood And Air Inlet Hood Installation  
The flue hood and air inlet hood are packaged in a box  
which is located inside the return air compartment. They  
must be installed prior to operation of the unit. See Fig-  
ure 10.  
To install the flue hood cover:  
1. Remove the flue hood from inside the box.  
2. Slide the upper lip of the hood cover under the top  
edge of the unit.  
4. Follow the lighting instructions. Place the appliance  
being inspected in operation. Adjust the thermostat  
so appliance will operate continuously.  
3. Attach the flue hood with two sheet metal screws.  
To install the air inlet hood:  
5. Test for spillage at the draft hood relief opening af-  
ter five minutes of main burner operation. Use the  
flame of a match or candle.  
1. Remove hood from inside box.  
2. Attach hood by using three sheet metal screws.  
6. After it has been determined that each appliance  
remaining connected to the common venting sys-  
tem properly vents when tested as outlined above,  
return doors, windows, exhaust fans, fireplace damp-  
ers, and any other gas-burning appliance to their  
previous conditions of use.  
7. If improper venting is observed during any of the  
above tests, the common venting system must be  
corrected in accordance with the latest edition of the  
National Fuel Gas Code, (ANSI Z223.1).  
If resizing any portion of the common venting system,  
use the appropriate table in Appendix G, in the latest  
edition of the National Fuel Gas Code, (ANSI Z223.1).  
Figure 10  
Air Inlet Hood and Flue Hood  
IX. Condensate Drain  
Condensate Drain Connection  
The evaporator condensate drain connection is 3/4" FPT.  
Clean out the inside of the drain connection to assure  
good condensate water runoff before connecting drain  
line. The drain line should have a trap on it to prevent  
debris, insects and dirt from being drawn into the return  
air system. Refer to Figure 11 for location. A 1" mini-  
mum head is recommended to allow draining against  
the negative pressure inside the unit.  
Replacing a Indoor Furnace  
WARNING  
To prevent property damage, personal  
injury or death, do not vent this unit with  
any other appliance.  
When an existing indoor furnace is removed from a  
venting system servicing other appliances, the venting  
system may be too large to properly vent the remaining  
attached appliances (water heater, etc.).  
1" Minimum  
Condensate  
Drain Connection  
Trap  
The following steps must be followed with each appli-  
ance remaining connected to the common venting sys-  
tem placed in operation, while the other appliances  
remaining connected to the common venting system are  
not in operation.  
The Drain Connection Must  
Be The Same Size as On  
Unit or Larger  
Figure 11  
Typical Condensate Drain  
NOTE: To avoid double trapping and an overflowing  
drain pan, soft plastic drain lines are not recommended.  
1. Seal any unused openings in the common venting  
system.  
2. Visually inspect the venting system for proper size  
and horizontal pitch and determine there is no block-  
age or restriction, leakage, corrosion and other de-  
ficiencies which could cause an unsafe condition.  
16  
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ON  
OFF  
Air Circulation Blower  
Gas Valve  
OPEN  
CLOSED  
ON  
Ignitor  
OFF  
CLOSED  
OPEN  
Pressure Switch  
(N.O. Contacts)  
Combustion Blower  
ON  
OFF  
Thermostat  
ON  
OFF  
Seconds  
0 34 38  
110  
0
90  
Figure 12  
Timing Chart for Normal Robertshaw Operation (PGB & PGC)  
On  
Off  
Indoor Fan  
Outdoor Fan  
and  
Compressor  
On  
Off  
On  
Off  
Thermostat  
Seconds  
0
15  
0
45  
(approx.)  
(approx.)  
Figure 13A  
PGB Timing Chart for Normal Cooling Operation  
On  
Off  
Indoor Fan  
Outdoor Fan  
and  
Compressor  
On  
Off  
On  
Off  
Thermostat  
Seconds 0  
30  
0
30  
(approx.)  
(approx.)  
Figure 13B  
PGC Timing Chart for Normal Cooling Operation  
17  
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PGC Normal Sequence of Operations - Cooling  
See Figure 13B  
X. Heating Sequence of Operations  
PGB & PGC)  
1. Thermostat calls for cooling. The compressor, in-  
door fan, and outdoor fan are energized.  
Normal Sequence of Operation - Heating  
See Figure 12  
2. Approximately 30 seconds later, the indoor fan  
ramps up to full speed.  
1. Thermostat calls for heat. The combustion blower is  
immediately energized.  
3. The unit will deliver cooling to the conditioned space  
until the thermostat is satisfied.  
2. The pressure switch contacts transfer.  
3. The ignitor is energized and allowed to preheat for  
38 seconds.  
4. The compressor and outdoor fan will be de-ener-  
gized when the thermostat opens. It is normal for  
the scroll compressor to produce a short burping  
sound at this time as its internal pressures are equal-  
ized. (The PGC48 has a piston compressor. All other  
PGC and PGB have scroll compressors.)  
4. The gas valve is energized delivering gas to the  
burners and starting combustion.  
5. The control checks the signal from the flame sen-  
sor. Gas flow will continue only if a proper signal is  
present within seven seconds after the gas valve  
opens. As soon as flame is proven, the ignitor is de-  
energized.  
5. Refrigerant will continue to flow through the capil-  
lary tube (sizes 24 to 42) until the high and low side  
pressures are approximately equal. For the PGC48,  
60 and PGB58 refrigerant will continue to flow  
through the thermal expansion valve until the high  
and low side pressures are approximately 50 PSI  
apart.  
6. The unit will continue to fire while the helical fan  
control heats up. The fan control will start the main  
circulating air blower approximately 75 seconds af-  
ter the gas valve opens (this time may vary depend-  
ing on the control setting).  
6. The indoor fan continues to run for approximately  
30 seconds after the thermostat is satisfied. This  
allows additional cooling from the indoor coil to be  
transferred to the conditioned space. Then, the in-  
door fan ramps down in 30 seconds to the OFF con-  
dition.  
7. The furnace will deliver heat to the conditioned space  
until the thermostat is satisfied.  
8. The gas valve and combustion blower will be de-  
energized when the thermostat opens.  
9. There is a 90 second delay (approximate) before  
the main air blower stops. This allows any additional  
heat in the heat exchanger to be transferred to the  
conditioned space.  
XIl. Startup and Adjustment  
Heating Startup  
General Information  
XI. Cooling Sequence of Operations  
This furnace is equipped with an electronic ignition de-  
vice which lights the burners. It also has a power vent  
blower to exhaust combustion products.  
PGB Normal Sequence of Operations - Cooling  
See Figure 13A  
On new installations, or if a major part such as the gas  
valve, pressure switch or fan/limit control has been re-  
placed, the operation of the furnace must be checked.  
1. Thermostat calls for cooling. The compressor and  
outdoor fan are energized.  
2. Approximately 15 seconds later, the fan time delay  
relay closes. The indoor fan now begins operation.  
Check furnace operation as outlined in the following in-  
structions. If any sparking, odors, or unusual noises are  
encountered, shut off electrical power and recheck for  
wiring errors, or obstructions in or near the blower mo-  
tors. Various shipping materials must be removed be-  
fore the indoor and outdoor fans can be operated.  
3. The unit will deliver cooling to the conditioned space  
until the thermostat is satisfied.  
4. The compressor and outdoor fan will be de-ener-  
gized when the thermostat opens. It is normal for  
the scroll compressor to produce a short burping  
sound at this time as its internal pressures are equal-  
ized.  
Heat Anticipator Setting  
The heat anticipator in the room thermostat must be  
correctly adjusted to obtain the proper number of heat-  
ing cycles per hour and to prevent the room tempera-  
ture from over-shooting the room thermostat setting.  
Heat anticipator must be set at 0.8 amps.  
5. Refrigerant will continue to flow through the capil-  
lary tube (sizes 24 to 42) until the high and low side  
pressures are approximately equal. Refrigerant will  
continue to flow through the thermal expansion valve  
until the high and low side pressures are approxi-  
mately 50 PSI apart.  
Roll-out Protection Control  
If the flames from the burners are not properly drawn  
into the heat exchanger, a protection device will open,  
causing the gas valve to close. The protection device is  
located on the manifold assembly (Figure 14).  
6. The indoor fan continues to run for approximately  
45 seconds after the thermostat is satisfied. This  
allows additional cooling from the indoor coil to be  
transferred to the conditioned space.  
18  
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Reset After Lock-out  
WARNING  
Should ignition not be achieved after three tries for any  
reason, it will be necessary to reset the electronic igni-  
tion module. To reset, it is only necessary to turn the  
thermostat below room temperature for thirty seconds,  
and then reset it to the desired temperature. The fur-  
nace may also be reset after lockout by disengaging the  
electric disconnect switch to the furnace for thirty sec-  
onds.  
To avoid the risk of fire or explosion, a  
qualified servicer must investigate the  
problem which caused the roll-out pro-  
tection device to open before manually  
resetting the device.  
Operating Instructions (Heating)  
NOTE: Figure 16 illustrates the proper gas valve mount-  
ing location.  
Flame Roll-Out  
Protector  
(Manual Reset)  
Flame Roll-Out  
Protector  
(Manual Reset)  
Figure 14  
Rollout Protection  
(Shown Without Heat Shield)  
Secondary Limit Control  
Figure 16  
Gas Valve  
On the PGC and PGB series, a second limit control is  
placed on the blower scroll that will open if the blower  
should fail, causing elevated temperatures at the con-  
trol. The reason for elevated temperatures at the control  
should be ascertained and repaired prior to resetting this  
manual reset control. The secondary limit control is lo-  
cated behind the front center panel on the blower scroll.  
(Figure 15).  
1. Close the manual gas valve external to the furnace.  
2. Turn off the electrical power supply to the furnace.  
3. Set the room thermostat to its lowest possible set-  
ting.  
4. Remove the right hand door on the front of the fur-  
nace by removing screws.  
Secondary Limit  
Control  
NOTE: Position of Limit Control  
Differs From Model to Model.  
5. This furnace is equipped with an ignition device  
which automatically lights the burner. Do NOT try to  
light burner by any other method.  
6. Turn the gas control valve knob to the OFF position.  
Do not force. (Figure 16).  
7. Wait five minutes to clear out any gas.  
8. Smell for gas, including near the ground. This is im-  
portant because some types of gas are heavier than  
air. If you have waited five minutes and you do smell  
gas, immediately follow the instructions on Page 6  
of this manual. If you have waited five minutes and  
you do NOT smell gas, turn the gas control valve  
knob to the ON position. (Figure 16).  
9. Replace the door on the front of the furnace.  
10. Open the manual gas valve external to the furnace.  
11. Turn on the electrical power supply to the furnace.  
12. Set the thermostat to desired setting.  
Figure 15  
Position of Limit Control  
NOTE: There is a one minute delay between thermo-  
stat energizing and burner firing.  
19  
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To adjust the pressure regulator, remove the adjustment  
screw or cover on the gas valve. Turn out (counterclock-  
wise) to decrease pressure, turn in (clockwise) to in-  
crease pressure. Only small variations in gas flow should  
be made by means of the pressure regulator adjustment.  
In no case should the final manifold pressure vary more  
than plus or minus 0.3 inches water column from the  
specified pressure. Any major changes in flow should  
be made by changing the size of the burner orifices.  
Gas Input And Pressures  
Gas supply pressure and manifold pressure with the  
burners operating must be as specified on the rating  
plate.  
Checking Gas Pressure  
Gas inlet pressure should be checked and adjusted in  
accordance to the type of fuel being consumed.  
With Power And Gas Off:  
1. Connect a water manometer or adequate gauge to  
Check The Gas Input (Natural Gas Only)  
NOTE: On outdoor equipment, the gas input will vary  
with the temperature of the gas. Rated input will be ob-  
the manifold gas pressure tap of the gas valve.  
As an alternative method, inlet gas pressure can also tained at approximately 10° F. With warmer ambient and  
be measured by removing the cap from the dripleg and gas temperatures, the input will decrease. Example: At  
installing a predrilled cap with a hose fitting. (See Figure 70° F the input will decrease 12%.  
17).  
To measure the gas input using the gas meter proceed  
as follows:  
With Power And Gas On:  
2. Put furnace into heating cycle and turn on all other  
1. Turn off gas supply to all other appliances except  
the furnace.  
gas consuming appliances.  
2. With the furnace operating, time the smallest dial on  
the meter for one complete revolution. If this is a 2  
cubic foot dial, divide the seconds by 2; if it is a 1  
cubic foot dial, use the seconds as is. This gives the  
seconds per cubic foot of gas being delivered to the  
furnace.  
INLET GAS PRESSURE  
Natural  
Propane  
Min. 5.0" W.C., Max. 10.0" W.C.  
Min. 11.0" W.C., Max. 14.0" W.C.  
Inlet Gas Pressure Must Not Exceed the Maximum Val-  
ues shown in Table Above.  
3. INPUT=GAS HTG VALUE x 3600 / SEC. PER CU-  
BIC FOOT  
If operating pressures differ from above, make neces-  
sary pressure regulator adjustments, check piping size,  
etc., and/or consult with local utility.  
Example: Natural gas with a heating value of 1000 BTU  
per cubic foot and 34 seconds per cubic foot as deter-  
mined by Step 2, then:  
Input = 1000 x 3600 / 0.34 = 106,000 BTU per Hour.  
NOTE: BTU content of the gas should be obtained  
from the gas supplier. This measured input must not  
be greater than shown on the unit rating plate.  
4. Relight all other appliances turned off in Step 1  
above. Be sure all pilot burners are operating.  
Check Main Burner Flame  
Flames should be stable, soft and blue, (dust may cause  
orange tips but they must not be yellow). They should  
extend directly outward from the burner without curling,  
floating or lifting off.  
Check Temperature Rise  
Figure 17  
Measuring Inlet Gas Pressure  
Alternate Method  
Check the temperature rise through the unit by placing  
thermometers in supply and return air registers as close  
to the furnace as possible. Thermometers must not be  
able to see the furnace heat exchangers, or false read-  
ings could be obtained.  
Check The Manifold Pressure  
1. All registers must be open; all duct dampers must  
be in their final (fully or partially open) position and  
the unit operated for 15 minutes before taking read-  
ings.  
A tapped opening is provided in the gas valve to facili-  
tate measurement of the manifold pressure. A U Tube  
manometer having a scale range from 0 to 12 inches of  
water should be used for this measurement. The mani-  
fold pressure must be measured with the burners oper-  
ating.  
2. The temperature rise must be within the range speci-  
fied on the rating plate.  
NOTE: Air temperature rise is the temperature differ-  
ence between supply and return air.  
20  
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With a properly designed system, the proper amount of  
temperature rise will normally be obtained when the unit  
is operated at rated input with the recommended blower  
speed.  
Changing Blower Speeds (PGB Units)  
WARNING  
To avoid personal injury or death due to  
electric shock, remove electrical power  
from the unit before changing speed taps  
on the blower motor.  
If the correct amount of temperature rise is not obtained,  
it may be necessary to change the blower speed. A  
higher blower speed will lower the temperature rise. A  
slower blower speed will increase the temperature rise.  
NOTE: Blower speed MUST be set to give the correct  
air temperature rise through the furnace as marked on  
the rating plate.  
A multi-speed motor is used in the furnace blower. It  
provides easy speed selection for both heating and cool-  
ing air flow. Section II shows the CFM and E.S.P. rela-  
tionship for proper selection of heating and cooling  
speeds. Cooling speed should be set for about 400 CFM  
per ton cooling capacity.  
Important Note: If an installation uses a different blower  
speed for cooling than is used for heating, do not set the  
thermostat fan switch to ON (constant fan operation)  
during the heating season without first confirming the  
cooling fan speed will give a temperature rise within the  
limits listed on the unit nameplate. Temperature rises  
outside the limits listed could result in premature heat  
exchanger failure.  
Refer to the Wiring Diagram on the furnace to connect  
the proper wires to the correct motor leads. All unused  
motor leads must be taped or securely covered with wire  
nuts.  
Check Limit And Fan Control  
Checking External Static Pressure  
The total external static pressure must be checked on  
this unit to determine if the airflow is correct.  
1. Check limit control (Figure 18) operation after 15  
minutes of operation by blocking the return air  
grille(s).  
a. After several minutes the main burners must go  
OFF. Blower will continue to run.  
Changing Blower Speeds (PGC Units)  
b. Remove air restrictions and main burners will re-  
light after a cool down period of a few minutes.  
WARNING  
To avoid personal injury or death due to  
electric shock, remove electrical power  
from the unit before changing speed taps  
on the blower motor.  
2. Adjust the thermostat setting below room tempera-  
ture.  
a. Main burners must go off.  
b. Circulating Air Blower should continue to run briefly  
until supply air temperature drops to approximately  
90-100° F.  
PGC-B models include a BPM (brushless permanent  
magnet) motor. Under identical conditions, it operates  
at a lower power consumption than most PSC motors.  
Within the allowable range of external static pressures,  
the BPM motor will automatically adjust its RPM to de-  
liver the CFM listed in the blower performance table. As  
static pressure increases, the RPM, current draw, and  
Fan and limit controls are preset at the factory. The con-  
trol is set for the fan to go off at 90-100° F:  
NOTE: If necessary, adjust fan ON/OFF settings to ob-  
tain satisfactory comfort level. The fan comes on at ap-  
operating sound level of the motor will also increase. proximately 125° F.  
External static pressures in excess of those listed on  
the nameplate may result in unsatisfactory operation,  
equipment damage, and/or loss of warranty coverage.  
WARNING  
To avoid personal injury, property dam-  
age, fire, or premature failure of the heat  
exchanger, do not adjust the limit con-  
trol, which is set at the factory.  
The PGC-B models also include a speed tap board lo-  
cated on the blower housing. The speed tap settings  
have been factory selected according to unit size and  
performance. Field select taps are provided on the speed  
tap board to assist the final installer. The ADJ. tap is  
factory set for normal (NORM) operation. Three LED’s  
are provided on the speed tap board. These lights indi-  
cate to the servicer which mode of operation the motor  
is experiencing, that is Heating (W1), Fan Only (G) or  
Cooling (Y and G).  
Refer to the wiring diagram on the unit to verify speed  
tap settings.  
21  
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WARNING  
To avoid personal injury or death, always  
disconnect electrical power before in-  
specting or servicing the unit. All com-  
pressor protection devices reset auto-  
matically, energizing the contactor and  
outdoor fan.  
Short Cycle Protector (Figure 19)  
The short cycle protector is located in the blower com-  
partment. Each time the compressor shuts off for any  
reason, the short cycle protector will open. It will take  
about 3 to 4 minutes before the short cycle protector will  
reset and allow compressor startup to occur.  
Figure 18  
Fan and Limit Control  
All wiring connected to the short cycle protector is 24V.  
If the compressor cycles on the short cycle protector  
without cycling on any of the other compressor protec-  
tion devices and before the call for cooling ends, com-  
mon causes include:  
CAUTION  
This unit should not be used as a “con-  
struction heater” during the finishing  
phases of construction on a new struc-  
ture. This type of use may result in pre-  
mature failure of the unit due to extremely  
low return air temperatures and exposure  
to very dirty atmospheres.  
• Interruption of the line voltage power.  
• Improper thermostat installation, defective thermo-  
stat wiring, or defective thermostat.  
• Rapid adjustments of the room thermostat.  
To Turn Off Unit  
1. Set the thermostat to lowest setting.  
Short Cycle  
Protector  
2. Turn off the electrical power supply to the furnace.  
3. Remove the right hand door on the front of the fur-  
nace by removing screws.  
4. Turn the gas control valve knob to the OFF position.  
Do not force. See Figure 16.  
5. Close manual gas shutoff valve external to the fur-  
nace.  
6. Replace the door on the unit.  
7. If cooling and/or air circulation will be desired, turn  
ON the electrical power.  
Figure 19  
Short Cycle Protector Location  
Cooling Startup  
High Pressure Cutout (Figure 20)  
An automatic reset high pressure control is located in  
the compressor discharge line. (See Figure 20) This  
control protects the unit from excessively high refriger-  
ant pressure.  
Compressor Protection Devices  
The PGC and PGB includes components which are de-  
signed to protect the compressor against abnormal op-  
erating conditions. These include the short cycle pro-  
tector, external compressor protector (PGC24-42, 60 and  
PGB58 only), and high pressure cutout.  
High pressures can result from:  
• Inoperative outdoor fan motor.  
• Outdoor coil restricted with debris.  
• Recirculation of hot condenser air.  
• Overcharge of refrigerant.  
These controls reset automatically. Excessive cycling  
of the controls should be investigated before continuing  
operation.  
(NOTE: The operation of the indoor blower will not be  
affected by any of the above compressor protection de-  
vices.)  
22  
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Important Note: Never close the compressor suction  
line to test its pumping efficiency. This will seriously dam-  
age the compressor and void its warranty.  
• The compressor may run backwards (noisy opera-  
tion) for 1 or 2 seconds at shutdown. This does not  
harm the compressor.  
• These scroll compressors have copper plated steel  
suction tubes. If removal and reconnection becomes  
necessary, use silfos with minimum 5% silver or sil-  
ver braze material with flux.  
• Operating pressures and current draws may differ  
from standard reciprocating compressors. See Sec-  
tion XV for typical cooling performance data.  
Reciprocating Compressor  
The PGC48 includes a reciprocating compressor with a  
crankcase heater. See the caution for the PGC48 be-  
fore starting cooling operation.  
CAUTION  
To avoid severe personal injury or fire,  
refrigerant must be removed from both  
the low and the high pressure sides of  
the system before heat is applied.  
Operating Instructions (cooling)  
Figure 20  
High Pressure Protection Devices  
CAUTION  
Scroll Compressors  
On PGC48 Only: To avoid damage to the  
compressor, engage the electrical dis-  
connect switch to the compressor unit  
four hours prior to operating air condi-  
tioner after the electrical disconnect is off  
for a prolonged period of time (during  
vacation, etc.). This time lapse allows the  
compressor crankcase to attain a proper  
operating temperature.  
PGC 24, 30, 36, 42, 60, and PGB58 units include scroll  
compressors. The installer and servicer should be aware  
of the following differences between scroll compressors  
and reciprocating compressors:  
• These scroll compressors include a thermostat (ex-  
ternal compressor protector) mounted to the top of  
the compressor. THIS PROTECTIVE DEVICE  
SHOULD NEVER BE BYPASSED FOR ANY PUR-  
POSE.  
• On a scroll compressor, due to its inherent ability to  
handle liquid refrigerant, a crankcase heater is not  
required.  
(NOTE: Mechanical cooling cannot be reliably provided  
at ambient temperatures below 50° F. If low ambient  
cooling will be required a downflow economizer is avail-  
able. See Section XIV.)  
CAUTION  
1. Turn on the electrical power supply to the unit.  
2. Place the room thermostat selector switch in the  
COOL position (or AUTO if available, and if auto-  
matic changeover from cooling to heating is desired).  
To avoid severe personal injury or fire,  
refrigerant must be removed from both  
the low and the high pressure sides of  
the system before heat is applied.  
3. Set the room thermostat to the desired temperature.  
• The scroll compressors use white oil which is com-  
patible with 3GS. If the addition of oil in the field is  
required, 3GS may be used .  
23  
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When installing a new filter or reinstalling an old one,  
always make certain the air flow arrows on the filter point  
in the proper direction. If using the unit filter rack, the  
airflow arrows must point toward the indoor blower.  
XIII. Maintenance  
WARNING  
To inspect the filter in the filter rack, proceed as follows:  
1. Disconnect power to the unit.  
To avoid personal injury or death due to  
electrical shock, disconnect electrical  
power before performing any mainte-  
nance.  
2. Locate the filter access door (Figure 9) and remove  
the four sheet metal screws.  
Important Note: Touching the ignitor body with bare fin-  
gers, rough handling, or vibration could result in early  
ignitor failure. Only a qualified servicer should ever  
handle the ignitor.  
3. Pull out the filter and inspect. Clean or change as  
necessary.  
4. Insert the filter into the filter rack channels and lower  
into place. Make sure the filter slides completely to  
the bottom so no part of the filter is left outside the  
back panel.  
Have the furnace checked at least once a year before  
the heating season begins, to be sure that the combus-  
tion air inlet and flue outlet hoods are not blocked by  
debris, which would prevent adequate combustion air  
and a properly operating vent system.  
5. Return the filter access door to its original position  
and secure it with the four sheet metal screws.  
6. Reconnect the power.  
Replacing Or Cleaning Filter  
Maintaining Cabinet Finish  
A return air filter is not supplied with this unit; however,  
there must be a means of filtering all of the return air.  
The filter(s) may be located in the return air duct(s), re-  
turn air filter grille(s) or in the filter rack in the unit. Con-  
sult with your installing dealer for the actual location of  
the return air filter(s) for your unit.  
Use a fine grade automotive wax on the cabinet finish to  
maintain the original high luster. This is especially im-  
portant in areas with high ultraviolet radiation.  
Clean Outside Coil (Qualified Servicer Only)  
The coil with the outside air flowing over it should be  
inspected annually and cleaned as frequently as neces-  
sary to keep the finned areas free of lint, hair and de-  
bris.  
Dirty filters are the most common cause of inadequate  
heating or cooling performance. Filter inspection should  
be made at least every two months; more often if nec-  
essary because of local conditions and usage.  
Dirty throwaway filters should be discarded and replaced  
with a new, clean filter. Dirty permanent filters should be  
washed with water, thoroughly dried and sprayed with a  
filter adhesive before being reinstalled. (Filter adhesives  
may be found at many hardware stores.) Permanent fil-  
ters should last several years. However, should one  
become torn or uncleanable, it should be replaced.  
Blower Motor  
The air circulating blower motor bearings are perma-  
nently lubricated.  
If the installation has the return air filter located in the  
unit filter rack and it must be replaced, use the appropri-  
ate Amana filter or a permanent filter that is properly  
sized as follows:  
Required Permanent  
Model  
Amana Part #  
C4855623  
Filter Size  
Figure 21  
PGC24, 30, or 36  
PGC42, 48, 60  
or PGB58  
26" X 20" X 1"  
Blower Motor and Housing  
(NOTE: Brushless Permanent Magnet (BPM) blower mo-  
tors are permanently lubricated and do not have oil ports.  
Oil cannot be added to these motors.  
C4855627  
32-5/8" X 22-3/8" X 1"  
Induced Draft Motor Lubrication  
The induced draft motor is permanently sealed and does  
not require additional oiling.  
24  
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Flame Sensor (Qualified Servicer Only)  
Ignitor (Qualified Servicer Only)  
Under some conditions, the fuel or combustion air sup-  
ply can create a nearly invisible coating on the flame  
sensor. This coating acts as an insulator causing a drop  
in the flame sensing signal. If this occurs, a qualified  
servicer should carefully clean the flame sensor with  
emery cloth or steel wool. After cleaning, the microamp  
signal should be in the range listed in Table 1A.  
If the ignitor and the surrounding air are at about 70° F  
and the ignitor wires are not connected to any other elec-  
trical components, the resistance of the ignitor should  
not exceed 200 ohms. If it does, the ignitor should be  
replaced.  
Compressor  
The compressor motor is permanently lubricated and  
hermetically sealed. It does NOT require oiling.  
Flue Passages  
At the start of each heating season, inspect, and if nec-  
essary clean the furnace flue passages.  
Cleaning Flue Passages (Qualified Servicer Only)  
1. Shut off electric power and gas supply to the fur-  
nace.  
Figure 22  
2. Remove burner assembly and disconnect the gas  
line and remove the manifold brackets from the par-  
tition panel.  
Induced Draft Motor  
3. Remove the induced draft blower and the collector  
box from the partition panel.  
Condenser Fan Motor Lubrication  
The condenser fan motor bearings are permanently lu-  
bricated and do not require additional lubrication.  
4. Remove tube inserts and turbulators from heat ex  
changer.  
5. The primary heat exchanger tubes can be cleaned  
using a round wire brush attached to a length of high  
grade stainless steel cable, such as drain cleanout  
cable. Attach a variable speed reversible drill to the  
other end of the spring cable. Slowly rotate the cable  
with the drill and insert it into one of the primary heat  
exchanger tubes. While reversing the drill, work the  
cable in and out several times to obtain sufficient  
cleaning. Repeat for each tube.  
6. When all heat exchanger tubes have been cleaned,  
replace the parts in the reverse order in which they  
were removed.  
7. To reduce the chances of repeated fouling of the  
heat exchanger, perform the steps listed in Startup  
and Adjustment, Section XII.  
Figure 23  
Removal of Fan Motor  
25  
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Burners  
Pressure Drop of Transition Kit  
CFM  
Model  
WARNING  
700  
900 1200 1400 1600 1800  
To avoid personal injury or death due  
to electrical shock, do not remove any  
internal compartment covers or attempt  
any adjustment. Contact a qualified ser-  
vicer at once if an abnormal flame ap-  
pearance should develop.  
0.07 0.11 0.19  
PDTROU3A  
PDTROU5A  
---  
---  
---  
---  
---  
---  
0.06 0.08 0.10  
Table 6  
Transition Kit Pressure Drop  
Replacement Parts  
At least once a year, prior to or during the heating sea-  
son, make a visual check of the burner flames.  
1. Refer to the description in Table 7 when ordering any  
of the listed functional parts. Be sure to provide the fur-  
nace model, manufacturing, and serial numbers with the  
order.  
NOTE: This will involve removing and reinstalling the  
right front door on the unit, which is held by several  
screws. If you are uncertain about your ability to do  
this, contact a qualified servicer.  
Gas Valve  
Heat Exchanger  
Gas Orifice, Natural  
Evaporator Coil  
Gas Orifice, Propane  
Transformer  
BPM Blower Motor (PGC)  
Blower Motor (PGB)  
Pressure Switch Hose  
Induced Draft Blower  
Time Delay Relay  
Blower Relay (PGB)  
Compressor  
If a strong wind is blowing, it may alter the airflow pat-  
tern within the furnace enough that an inspection of the  
burner flames is not possible.  
The inspection of the burner flames must be performed  
with the heat shield in place. Only a qualified servicer  
should ever remove the heat shield from the manifold  
assembly.  
Burner  
Ignitor  
Pressure Switch  
Combustion Relay  
Flame Sensor  
Blower Wheel  
Contactor  
For further information on the yearly inspection, con-  
sult the User Manual. It is recommended that a quali-  
fied servicer inspect and service the unit at least once  
each year.  
Flame Roll-Out Switch  
Condenser Fan Blade  
High Pressure Cutout  
Condenser Fan Motor  
Compressor Time Delay  
Condenser Coil  
Ignition Control  
Blower Housing  
Fan/Limit Switch  
Speed Tap Board (PGC)  
Turn the furnace on at the thermostat. Wait a few min-  
utes, since any dislodged dust will alter the normal flame  
appearance. Flames should be predominantly blue and  
directed into the tubes. They should not be yellow. They  
should extend directly outward from the burner ports  
without curling downward, floating or lifting off the ports.  
Table 7  
Functional Parts List  
2. Although only functional parts are shown in Table 7,  
all sheet metal parts, doors, etc. may be ordered by de-  
scription or by referring to the Parts Manual.  
XIV. Accessories and Functional  
Parts  
3. Parts are available from your Amana distributor.  
Accessories  
Additional Amana accessories can be purchased to fit  
specific application needs. Accessories can be ordered  
by description in Table 5. Each accessory includes its  
own separate instructions.  
Accessory  
Duct Transition Round  
Duct Transition Over/Under  
Rooftop Curb  
Downflow Economizer  
Fresh Air Intake  
Barometric Relief Hood  
50° F Compressor Lockout  
Ambient Thermostat Kit  
Emergency Heat Relay  
Circuit Breaker Kit  
Electric Heat Kit  
Table 5  
Accessory List  
26  
Transition Kit  
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XV. Typical Cooling Performance Data  
Outdoor  
Air Temp.  
at  
Indoor  
Air  
Temp.  
PGC24  
Pressure @ Unit  
Air Temp. Gauge Fittings  
PGC30  
Pressure @ Unit  
Air Temp. Gauge Fittings  
PGC36  
Pressure @ Unit  
Air Temp. Gauge Fittings  
Indoor  
Indoor  
Indoor  
Amps  
Amps  
Amps  
Condenser at Evap.  
Inlet Inlet  
(Dry Bulb) (Wet Bulb)  
Difference  
Difference  
Total to Betw een  
Difference  
Total to Betw een  
Betw een  
Coil Inlet  
and Outlet  
Low  
Side  
High  
Side  
Low  
Side  
High  
Side  
Low  
Side  
High  
Side  
Total to  
Unit  
Unit  
Coil Inlet  
and Outlet  
Unit  
Coil Inlet  
and Outlet  
A
B
° F.  
7
12  
17  
23  
7
12  
17  
23  
7
12  
18  
23  
8
C
PSIG  
92  
91  
91  
90  
91  
90  
80  
89  
90  
90  
89  
88  
89  
89  
89  
88  
D
PSIG  
325  
324  
324  
326  
308  
304  
304  
304  
288  
286  
286  
286  
269  
269  
271  
271  
E
Amps  
12.8  
12.7  
12.7  
12.8  
12.2  
12.1  
12.1  
12.1  
11.7  
11.6  
11.6  
11.6  
11.1  
11.1  
11.2  
11.2  
B
° F.  
7
12  
17  
23  
7
12  
17  
23  
7
12  
18  
23  
8
C
PSIG  
89  
89  
88  
87  
89  
88  
88  
87  
88  
88  
87  
86  
87  
87  
86  
85  
D
PSIG  
320  
322  
322  
322  
304  
303  
303  
302  
285  
285  
283  
282  
267  
267  
267  
267  
E
Amps  
15.8  
15.9  
15.8  
15.8  
15.2  
15.1  
15.1  
15.1  
14.5  
14.5  
14.5  
14.4  
13.9  
13.9  
13.9  
13.9  
B
° F.  
7
12  
17  
23  
7
12  
17  
23  
7
12  
18  
23  
8
C
PSIG  
88  
87  
87  
86  
87  
87  
86  
85  
86  
86  
85  
84  
86  
85  
85  
84  
D
PSIG  
351  
352  
352  
352  
332  
332  
331  
329  
311  
310  
312  
311  
293  
293  
292  
290  
E
Amps  
19.3  
19.4  
19.3  
19.3  
18.5  
18.5  
18.4  
18.4  
17.6  
17.6  
17.6  
17.6  
16.9  
16.9  
16.8  
16.7  
° F.  
° F.  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
115  
110  
105  
100  
12  
18  
23  
12  
18  
23  
12  
18  
23  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
8
89  
88  
88  
87  
88  
88  
87  
86  
87  
87  
86  
86  
87  
86  
86  
85  
86  
86  
85  
85  
255  
251  
252  
254  
237  
236  
234  
235  
222  
221  
221  
220  
203  
203  
205  
206  
189  
189  
191  
190  
10.7  
10.6  
10.7  
10.7  
10.2  
10.2  
10.2  
10.2  
9.8  
8
87  
86  
86  
85  
86  
86  
86  
84  
86  
85  
84  
83  
85  
84  
84  
83  
84  
84  
83  
82  
251  
249  
249  
249  
234  
232  
231  
231  
217  
217  
216  
216  
202  
203  
202  
202  
189  
189  
189  
187  
13.4  
13.3  
13.3  
13.3  
12.9  
12.8  
12.8  
12.8  
12.3  
12.4  
12.3  
12.3  
11.9  
12.0  
11.9  
11.9  
11.6  
11.6  
11.6  
11.6  
8
85  
85  
84  
83  
84  
84  
83  
83  
84  
83  
83  
82  
83  
83  
82  
81  
83  
82  
82  
81  
275  
274  
274  
274  
255  
255  
256  
254  
240  
238  
238  
239  
224  
223  
221  
221  
208  
207  
207  
206  
16.2  
16.1  
16.1  
16.1  
15.4  
15.4  
15.4  
15.4  
14.8  
14.8  
14.7  
14.8  
14.3  
14.2  
14.2  
14.2  
13.7  
13.7  
13.7  
13.6  
95  
90  
85  
80  
75  
13  
18  
23  
8
13  
18  
23  
8
13  
18  
23  
8
13  
18  
24  
8
13  
18  
24  
8
13  
18  
24  
8
13  
18  
24  
8
9.8  
13  
18  
24  
8
13  
18  
24  
8
9.8  
9.8  
9.3  
13  
18  
24  
8
9.3  
13  
18  
24  
8
13  
18  
24  
8
9.4  
9.4  
9.0  
13  
19  
24  
9.0  
13  
19  
24  
13  
19  
24  
9.0  
9.0  
A Columns - All data based on indoor dry bulb of 80° F and rated air flow. As indoor dry bulb temperature increases, a slight increase wil  
between inlet and outlet. Low and high side pressures and power will not change.  
l occur in indoor air temperature differential  
B Columns - A properly operating unit should be within ±3° F of the typical (dry bulb) value shown.  
C Columns - A properly operating unit should be within ±3 PSIG of the typical value shown.  
D Columns - A properly operating unit should be within ±7 PSIG of the typical value shown.  
E Columns - A properly operating unit should be within ±2 amps of the typical value shown.  
Table 8A  
27  
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Outdoor  
Air Temp.  
at  
Indoor  
Air  
Temp.  
at Evap.  
Inlet  
PGC42  
PGC48  
PGC60 and PGB58  
Pressure @ Unit  
Gauge Fittings  
Indoor  
Air Temp.  
Pressure @ Unit  
Gauge Fittings  
Indoor  
Air Temp.  
Pressure @ Unit  
Gauge Fittings  
Indoor  
Air Temp.  
Amps  
Amps  
Amps  
Condenser  
Inlet  
(Dry Bulb)  
Difference  
Between  
Coil Inlet  
and Outlet  
Difference  
Between  
Coil Inlet  
and Outlet  
Difference  
Between  
Coil Inlet  
and Outlet  
Low  
Side  
High  
Side  
Total to  
Unit  
Low  
Side  
High  
Side  
Total to  
Unit  
Low  
Side  
High  
Side  
Total to  
Unit  
(Wet Bulb)  
A
° F.  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
77  
72  
67  
62  
B
° F.  
7
C
PSIG  
86  
85  
85  
84  
85  
85  
84  
83  
84  
84  
83  
82  
84  
83  
83  
82  
83  
82  
82  
81  
82  
82  
81  
80  
82  
81  
81  
80  
81  
81  
80  
79  
80  
80  
79  
79  
D
PSIG  
332  
331  
332  
332  
313  
313  
312  
311  
294  
293  
294  
293  
277  
276  
275  
274  
259  
258  
257  
256  
241  
241  
240  
240  
226  
224  
225  
223  
211  
210  
211  
208  
196  
196  
194  
194  
E
B
° F.  
8
C
PSIG  
88  
88  
88  
87  
88  
87  
87  
86  
87  
86  
86  
85  
86  
86  
85  
84  
85  
85  
84  
84  
84  
84  
83  
83  
84  
83  
83  
82  
83  
82  
82  
81  
82  
82  
81  
80  
D
PSIG  
327  
327  
327  
326  
308  
308  
308  
307  
291  
290  
290  
290  
274  
273  
273  
272  
256  
257  
256  
255  
240  
240  
240  
239  
225  
225  
224  
224  
200  
210  
209  
209  
196  
196  
195  
195  
E
B
° F.  
9
C
PSIG  
83  
83  
82  
81  
82  
82  
81  
80  
82  
81  
80  
80  
81  
80  
80  
79  
80  
80  
79  
78  
79  
79  
78  
77  
79  
78  
78  
77  
78  
78  
77  
76  
78  
77  
76  
76  
D
PSIG  
343  
342  
342  
341  
323  
322  
322  
321  
303  
303  
303  
302  
285  
285  
285  
284  
268  
267  
267  
266  
251  
250  
250  
249  
234  
234  
233  
232  
218  
218  
218  
217  
204  
203  
203  
202  
E
° F.  
Amps  
23.1  
23.1  
23.1  
23.2  
22.2  
22.2  
22.1  
22.1  
21.3  
21.2  
21.3  
21.2  
20.4  
20.4  
20.4  
20.3  
19.6  
19.6  
19.5  
19.5  
18.8  
18.8  
18.8  
18.8  
18.1  
18.1  
18.1  
18.0  
17.5  
17.5  
17.5  
17.4  
16.9  
16.9  
16.8  
16.8  
Amps  
23.8  
23.8  
23.8  
23.7  
23.2  
23.2  
23.1  
23.1  
22.5  
22.5  
22.5  
22.4  
21.9  
21.9  
21.8  
21.8  
21.3  
21.2  
21.2  
21.1  
20.6  
20.6  
20.6  
20.5  
20.0  
20.0  
20.0  
19.9  
19.4  
19.4  
19.4  
19.3  
18.8  
18.8  
18.8  
18.8  
Amps  
34.9  
34.8  
34.7  
34.6  
33.3  
33.2  
33.2  
33.1  
31.8  
31.8  
31.8  
31.7  
30.5  
30.4  
30.5  
30.4  
29.2  
29.2  
29.2  
29.1  
28.1  
28.0  
28.0  
27.9  
27.0  
26.9  
26.9  
26.8  
25.9  
25.9  
25.9  
25.8  
25.0  
24.9  
24.9  
24.8  
115  
12  
18  
23  
8
13  
18  
24  
8
15  
21  
26  
10  
15  
21  
27  
10  
15  
21  
27  
10  
15  
21  
27  
10  
16  
22  
28  
10  
16  
22  
28  
11  
16  
22  
28  
11  
16  
22  
28  
11  
16  
22  
28  
110  
105  
100  
95  
13  
18  
23  
8
13  
18  
24  
8
13  
18  
23  
8
13  
18  
24  
8
13  
18  
24  
8
13  
19  
24  
8
13  
18  
24  
8
13  
19  
25  
8
90  
13  
19  
24  
8
14  
19  
25  
9
85  
13  
19  
24  
8
14  
19  
25  
9
80  
13  
19  
24  
9
14  
20  
25  
9
75  
14  
19  
25  
14  
20  
25  
A Columns - All data based on indoor dry bulb of 80° F and rated air flow. As indoor dry bulb temperature increases, a slight increase wil  
between inlet and outlet. Low and high side pressures and power will not change.  
l occur in indoor air temperature differential  
B Columns - A properly operating unit should be within ±3° F of the typical (dry bulb) value shown.  
C Columns - A properly operating unit should be within ±3 PSIG of the typical value shown.  
D Columns - A properly operating unit should be within ±7 PSIG of the typical value shown.  
E Columns - A properly operating unit should be within ±2 amps of the typical value shown.  
Table 8B  
28  
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XVI. Wiring Diagram  
PGC24 - 36  
29  
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PGC 42  
30  
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PGC 48  
31  
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PGC 60  
32  
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PGB 58  
H
1
H
3
33  
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