Bryant 619FNF User Manual

installation, start-up and  
service instructions  
619FNF  
619FNQ  
Sizes 018-03036  
IN-CEILING CASSETTE  
FAN COIL UNITS  
Cancels: New  
II 619F-18-1  
4/1/06  
CONTENTS  
GENERAL  
Page  
CAUTION: This system uses Puron® refrigerant  
(R-410A), which has higher pressures than R-22 and  
other refrigerants. No other refrigerant may be used in  
this system. All equipment must be designed to handle  
R-410A refrigerant. If unsure about equipment, consult  
the equipment manufacturer.  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1  
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-19  
I. Step 1 — Complete Pre-Installation Checks . . . . . . 2  
II. Step 2 — Locating and Mounting the Unit. . . . . . . . 6  
III. Step 3 — Locating and Mounting the Room  
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
CAUTION: Do not operate the unit without a filter  
or with the grille removed. Damage to the unit or per-  
sonal injury may result.  
IV. Step 4 — Complete Refrigerant Piping  
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
V. Step 5 — Make Electrical Connections . . . . . . . . . 11  
INSTALLATION OPTIONS . . . . . . . . . . . . . . . . . . . . . . . .19-22  
I. Fresh Air Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
II. Conditioned Air Supply to Adjacent Room . . . . . . 19  
III. Room Controller Configuration Setup. . . . . . . . . . 21  
IV. Louver Mode Selection . . . . . . . . . . . . . . . . . . . . . . 21  
V. Main Board Configuration. . . . . . . . . . . . . . . . . . . . 21  
These instructions cover the installation, start-up and service  
of in-ceiling cassette fan coil units. See Fig. 1.  
The following accessories can be used with 619FNF, FNQ  
units. See the price pages for part numbers and additional  
information for the following accessories:  
• photocatalytic and electrostatic filter with mount  
• air supply outlet obstruction kit  
• wired room controller  
• room controller wiring kit for multiple units  
• zone manager kit for multiple units  
• zone manager  
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22,23  
SERVICE AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . 23  
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .23,24  
SAFETY CONSIDERATIONS  
• infrared remote kit  
Installing and servicing air-conditioning equipment can be  
hazardous due to system pressure and electrical components.  
Only trained and qualified service personnel should install or  
service air-conditioning equipment.  
Untrained personnel can perform basic maintenance, such as  
cleaning and replacing filters. All other operations should be  
performed by trained service personnel. When working on air  
conditioning equipment, observe safety precautions in litera-  
ture, tags, and labels attached to unit.  
Follow all safety codes. Wear safety glasses and work gloves.  
Use quenching cloth for brazing operations. Have fire extin-  
guisher available. Read these instructions thoroughly. Con-  
sult local building codes and the National Electrical Code  
(NEC) for special installation requirements.  
WARNING: Before installing or servicing system,  
always turn off main power to system. There may be  
more than one disconnect switch. Turn off accessory  
heater power if applicable. Electrical shock can cause  
serious personal injury.  
Fig. 1 — 619FNF, FNQ Unit  
1?10-5/8?(?575)  
1' -10-5/8"(575)  
3/8"(9)  
2"(52)  
Ø 2-3/14" (70)  
0
5
1
(
1 -5/16"(49)  
2-13/64"(56)  
"
2
3
/
9
2
-
5
Ø
)
2'-4-11/32"(720)  
1'-9-21/32"(550)  
Supply air  
Supply air  
Return air  
619FNF018  
Ø1"(25)  
2
"
(50)  
1-7/8"(47)  
2'-8-1/2"(825)  
2'-8-1/2"(825)  
1 -31/32"  
(50)  
)
0
11-57/64"  
(302)  
5
1
(
"
2
3
/
9
2
-
5
Ø
Supply air  
Supply air  
Return air  
1'-11-7/16"(595)  
619FNF024, 03036 / 619FNQ01824, 03036  
)
0
5
1
(
"
2
/
9
2
-
5
Ø3-15/16"  
(100)  
2
-
5
/
8
"
(
6
6
7
)
/
8
"
(
4
8
)
)
9
4
(
"
6
1
/
5
1
-
1
NOTE: Dimensions in ( ) are in mm.  
Fig. 2 — Unit Dimensions  
—3—  
Table 4A — 619FNF Physical Data  
018  
SYSTEM SIZE  
NOMINAL CAPACITY (Btuh)  
OPERATING WEIGHT (lb)  
SEER  
024  
030  
29,000  
95  
036  
36,400  
95  
17,000  
49  
23,600  
91  
13  
REFRIGERANT*  
Control (Cooling)  
R-410A  
AccuRator Control  
INDOOR FAN  
Direct Drive Centrifugal  
Rpm/Cfm High  
1000/470  
890/420  
730/340  
120  
440/690  
660/910  
550/760  
470/670  
210  
660/910  
550/760  
470/670  
210  
Rpm/Cfm Medium  
Rpm/Cfm Low  
360/560  
300/470  
110  
Motor Watts  
Blowers Quantity...Size (in.)  
1...11.1  
INDOOR COIL  
Face Area (sq ft)  
No. of Rows  
Fins/in.  
Copper Tube, Aluminum Fin  
3.2  
2
22  
5
4.8  
2
4.6  
3
4.6  
3
18  
10  
18  
6
18  
10  
Circuits  
FILTERS  
Quantity...Size (in.)  
Cleanable  
1...17 x 16  
AIRSWEEP  
Horizontal  
OPERATING LIMITS  
Cooling (Min/Max)  
Auto/Preset  
55 F/125 F  
CONTROLS  
Integrated Microprocessor  
Remote Controller Options  
Diagnostics  
Wireless, CRC  
Yes  
Defrost Method  
Timer Mode  
Warm Start Feature  
Test Mode  
Freeze Protection  
Dehumidification Mode  
Fan Mode  
Auto Changeover  
Auto Restart  
Control Voltage  
System Voltage  
Demand Defrost  
Yes  
Yes  
Yes  
Yes  
Yes  
High/Medium/Low/Auto  
Yes  
Yes  
24  
208/230  
REFRIGERANT LINES  
Connection Type  
Flare  
Flare  
Flare  
Flare  
3
3
3
3
Mixed-Phase Line (in.) OD  
Vapor Line (in.) OD  
/
/
/
/
8
8
8
8
5
5
3
3
/
/
/
/
8
8
4
4
Max Length (ft)  
Max Lift (Fan Coil Above) (ft)  
Max Lift (Fan Coil Below) (ft)  
200  
60  
200  
60  
200  
60  
200  
60  
60  
60  
60  
60  
CONDENSATE DRAIN SIZE (in.)  
1
1
1
1
LEGEND  
CRC — Carrier Room Controller  
SEER — Seasonal Energy Efficiency Ratio  
*See Table 3 for factory charge and additional field charge requirements.  
—4—  
Table 4B — 619FNQ Physical Data  
018  
SYSTEM SIZE  
024  
030  
036  
NOMINAL CAPACITY (Btuh)  
Heat Pump  
Cooling  
17,900  
16,800  
17,000  
22,600  
20,800  
22,600  
29,200  
27,400  
29,000  
33,400  
32,400  
36,000  
Heating  
Cooling with Electric Heat  
SEER  
13  
HSPF  
7.7  
OPERATING WEIGHT (lb)  
91  
91  
95  
95  
REFRIGERANT*  
Control (Cooling)  
Control (Heating)  
R-410A  
AccuRator Control  
AccuRator Control  
INDOOR FAN  
Direct Drive Centrifugal  
Rpm/Cfm High  
440/690  
360/560  
300/470  
110  
440/690  
660/910  
550/760  
470/670  
210  
660/910  
550/760  
470/670  
210  
Rpm/Cfm Medium  
Rpm/Cfm Low  
360/560  
300/470  
110  
Motor Watts  
Blowers Quantity...Size (in.)  
1...18  
INDOOR COIL  
Face Area (sq ft)  
No. of Rows  
Fins/in.  
Copper Tube, Aluminum Fin  
4.8  
2
18  
6
4.8  
2
4.6  
3
4.6  
3
18  
10  
18  
6
18  
10  
Circuits  
FILTERS  
Quantity...Size (in.)  
Cleanable  
1...24 x 235/16  
AIRSWEEP  
Horizontal  
Auto/Preset  
OPERATING LIMITS  
Heating (Min/Max)  
Cooling (Min/Max)  
15 F/75 F  
55 F/125 F  
CONTROLS  
Integrated Microprocessor  
Remote Controller Options  
Diagnostics  
Wireless CRC  
Yes  
Defrost Method  
Timer Mode  
Warm Start Feature  
Test Mode  
Freeze Protection  
Dehumidification Mode  
Fan Mode  
Auto Changeover  
Auto Restart  
Control Voltage  
System Voltage  
Demand Defrost  
Yes  
Yes  
Yes  
Yes  
Yes  
High/Medium/Low/Auto  
Yes  
Yes  
24  
208/230  
REFRIGERANT LINES  
Connection Type  
Flare  
Flare  
Flare  
Flare  
3
3
3
3
Mixed-Phase Line (in.) OD  
Vapor Line (in.) OD  
/
/
/
/
8
8
8
8
5
5
3
3
/
/
/
/
8
8
4
4
Max Length (ft)  
Max Lift (Fan Coil Above) (ft)  
Max Lift (Fan Coil Below) (ft)  
200  
60  
200  
60  
200  
60  
200  
60  
60  
60  
60  
60  
CONDENSATE DRAIN SIZE (in.)  
1
1
1
1
LEGEND  
CRC — Carrier Room Controller  
HSPF — Heating Seasonal Performance Factor  
SEER — Seasonal Energy Efficiency Ratio  
*See Table 3 for factory charge and additional field charge requirements.  
—5—  
II. STEP 2 — LOCATING AND MOUNTING THE UNIT  
A. Locating the Unit  
cable (see Fig. 2 for dimensions). The cardboard template  
(supplied with the unit) may be used as a guide. Depending  
on the type of ceiling, the hangers can be fixed as shown in  
Fig. 5.  
Install the unit as centrally as possible in the room. The air-  
flow direction can be controlled by the remote control (where  
used) or automatically, according to the unit operating mode  
(cooling or heating). Controlling the airflow automatically  
will ensure optimum distribution of the air in the room.  
Once the threaded hangers have been positioned, do not  
tighten the nuts. Insert the washers as shown in Fig. 5. First  
position the refrigerant lines, which will be connected in the  
Complete Refrigerant Piping Connections section. Remove  
the “T” bar in the ceiling to facilitate installation. See Fig. 6.  
In Cooling mode, the louvers should be positioned so that the  
air is directed towards the ceiling. Refer to Fig. 3. In Heating  
mode, the louvers should be positioned so that the air is  
directed toward the floor to prevent layers of hot air forming  
close to the ceiling. Refer to Fig. 3. The louvers will be auto-  
matically positioned when the louvers are set to Automatic  
mode. Alternatively, the louvers can be placed in intermedi-  
ate positions (with infrared remote accessory kit only) or  
allowed to move continuously (Swing mode).  
Carefully lift the unit (without the frame) using the four sus-  
pension brackets (or the four corners), and insert it into the  
false ceiling. If the “T” bar cannot be removed from the ceil-  
ing the unit may need to be tilted. See Fig. 7.  
NOTE: Tilting the unit may only be carried out with false  
ceilings with a minimum height of 11 ft-13/16 inches.  
Align and level the unit by adjusting the nuts and locknuts  
on the threaded hangers, maintaining a distance of 1 in. to  
13/16 in. between the sheet metal body and the underside of  
the false ceiling. See Fig. 8. Reposition the “T” bar and align  
the unit in relation to the bar by tightening the nuts and  
locknuts. After connection of the condensate drain line and  
the refrigerant lines, carry out a final check to make sure  
that the unit is level.  
In order to allow easy and rapid installation and mainte-  
nance, ensure that the unit is mounted in a location that is  
easily accessible.  
Restricting Air Outlets  
A maximum of two air outlets can be restricted at one time.  
See Fig. 3. The air supply outlet obstruction accessory kit  
can be used to obstruct air outlets. Contact your local dealer  
for more information.  
Drilling the Hole for Connection Pipes in the External Wall  
After positioning the units and determining the connection  
position, drill a 23/4 in. hole in the wall. The same hole can be  
used as a condensate drain pipe conduit. The hole should  
B. Mounting the Unit  
Use a stacker to lift the unit to the installation location.  
Refer to Fig. 4. If the mounting location is in a plaster board  
ceiling, the maximum dimensions of the unit housing cutout  
must not exceed 2 ft, 2 in. square for 619FNF018 units and  
2 ft, 11 in. square for 619FNF024, 03036 and 619FNQ01824,  
03036 units.  
3
3
have a /16 in. to /8 in. slope toward the outside. Refer to  
Fig. 9. Insert the plastic conduit. Pass the power connection  
cables through the conduit. The power connection cables will  
be connected in the Make Electrical Connections section.  
Running the Condensate Drain Piping  
NOTE: In rooms with high humidity, brackets should be  
insulated using self-adhesive insulation.  
To ensure correct condensate water flow, the drain pipe  
should have a gradient of 2% without obstructions. Addition-  
ally, a trap of at least 2 in. depth should be made to prevent  
unpleasant odors from reaching the room.  
Mark the position of the hangers, refrigerant lines and con-  
densate drain pipe, power supply cables and remote control  
Max. 2 louvers closed  
Heat pump: louver position for correct airflow.  
Cooling: louver position for correct airflow.  
Fig. 3 — Louver Positioning  
—6—  
Spirit  
Level  
False  
Ceiling  
1to 1-3/16”  
Fig. 4 — Positioning Unit  
Fig. 8 — Align and Level the Unit  
Outdoor  
3/16"÷3/8"  
(5÷10 mm)  
Indoor  
Nut  
Washer  
Threaded hangers  
Washers  
Fig. 9 — Drilling for Connections  
Threaded hangers  
Wooden frame  
Nut  
Washer  
Nut  
The condensate may be discharged at a maximum height of  
77/8 in. above the unit, as long as the ascending tube is verti-  
cal and aligned with the drainage flange.  
Nut  
Fig. 5 — Attaching Hangers to Ceiling  
If it is necessary to discharge the condensate from a level  
above 77/8 in., install an auxiliary water discharge pump and  
float valve. A float valve is recommended to stop the com-  
pressor if there is a fault at the auxiliary pump.  
The condensate pipe must be insulated with condensation  
proof material such as polyurethane, propylene or neoprene  
of 3/16 in. to 3/8 in. thickness. See Fig. 10.  
Threaded hangers  
CAUTION: The drain tube extension must be  
securely fastened to the condensate drain. Failure to  
do so could result in condensate water dripping on to  
the floor, which could cause personal injury.  
"T" bar  
(to be removed)  
Fig. 6 — Threaded Hangers and T Bar  
NOTE: If more than one unit is installed in the room, the  
drain system can be designed as shown in Fig. 10.  
Installing the Grille and Frame Assembly  
Carefully unpack the assembly and check for damage sus-  
tained in transport. Attach the assembly to the unit by using  
the two hooks. See Fig. 11. Tighten the four screws, link the  
electrical connectors and insert the wires in the cable clamp.  
Use the screws supplied to fix the frame in to position. See  
Fig. 12.  
Threaded Hangers  
Threaded Hangers  
T-Bar  
Ensure that the frame is not distorted by excessive tighten-  
ing, that it is aligned with the false ceiling and that there is  
a seal between the air inlet and outlet. See Fig. 13. Gasket  
“A” prevents return air from mixing with the supply air and  
gasket “B” prevents the supply air from leaking into the ceil-  
ing void. Once the unit is mounted in the ceiling, the gap  
between the unit frame and the false ceiling must not be  
more than 3/16 in. wide.  
T-Bar  
T-Bar  
Supension Brackets  
Supension Brackets  
Fig. 7 — Positioning Unit in Ceiling  
—7—  
2%  
2” (50 mm)  
A. Gasket "A"  
B. Gasket "B"  
max.  
7-7/8”(200 mm)  
A
AIR  
B
Fig. 10 — Condensate Drain Pipe  
Fig. 13 — Gasket Location  
Frame support brackets  
III. STEP 3 — LOCATING AND MOUNTING THE ROOM  
CONTROLLER  
WARNING: Electrical shock can cause personal  
injury and death. Shut off all power to this equipment  
during installation. There may be more than one dis-  
connect switch. Tag all disconnect locations to alert  
others not to restore power until work is completed.  
A. Locating the Room Controller  
See Fig. 14 for room controller dimensions. If the air sensor  
in the room controller is going to be used, the room controller  
should be located by considering the following:  
Fig. 11 — Attach Frame Assembly  
• Position controller with a minimum clearance of 5 ft from  
the floor.  
• Locate the unit in the same area as the fan coil unit; pref-  
erably on an inside partitioning wall.  
• Locate on a section of the wall without pipes or ductwork.  
Do not locate close to a window, on an outside wall, or  
next to a door leading to the outside.  
Do not locate where the controller is exposed to direct  
light and heat from a lamp, sun, fireplace, or other tem-  
perature-radiating object that may cause a false reading.  
Do not locate close to, or in direct airflow of, a heating or  
cooling supply.  
Do not locate in areas with poor circulation, such as  
behind a door or in an alcove.  
Safety cord  
Cable clamp  
Power connection  
cables from unit  
Power connection  
cables from frame  
Frame support  
screws  
NOTE: Do not exceed 500 ft of network wiring when mount-  
Fig. 12 — Fix Frame in Position  
ing the room controller.  
—8—  
3/4"(20mm)  
4-1/4" (108mm)  
Fig. 14 — Room Controller Dimensions  
B. Mounting the Room Controller (Fig. 15-17)  
Unscrew the side fixing screw. Open the room controller rear  
mounting base to expose the mounting holes. The base can  
be removed to simplify mounting (snap apart carefully at  
hinge to separate mounting base from the rest of the room  
controller). Route the room controller wires through the  
large hole in the mounting base. Level the mounting base  
against the wall (for aesthetic value only, as the room con-  
troller does not need to be level for proper operation) and  
P
G
C
mark the wall through the two mounting holes. Drill two  
Connection Cable  
Fig. 16 — Locating the Connection Cable  
3
/
16 in. mounting holes in the wall where marked. Secure the  
mounting base correctly (UP) to the wall with the two screws  
and two anchors provided, (additional anchoring holes are  
available for more secure mounting if necessary) making  
sure all wires extend through the hole in the mounting base.  
Adjust the length and routing of each wire to reach the  
proper terminal in the connector block on the mounting base,  
with 1/4 in. of extra wire (strip only 1/4 in. of insulation from  
each wire to prevent adjacent wires from shorting together  
when connected).  
Match and connect equipment wires to proper terminals in  
the connector block. Both power and communication wires  
must be connected correctly for proper room controller  
operation.  
Push any excess wire into the wall and against mounting  
base. If the air sensor is being used on the room controller,  
seal the hole in the wall to prevent air leaks. Leaks can  
affect sensor operation.  
P
G
C
Push the room controller snap hinge to the base and tighten  
the side fixing screw.  
Connection Cable  
Fig. 17 — Connecting the Room Controller  
Mounting screws  
P
G
C
Fig. 15 — Mounting the Room Controller  
—9—  
IV. STEP  
CONNECTIONS  
4
COMPLETE REFRIGERANT PIPING  
If either refrigerant tubing or indoor coil is exposed to the  
atmosphere, the system must be evacuated following good  
refrigeration practices.  
IMPORTANT: During unit installation make the refrigerant  
connections first and then the electrical connections. If the  
unit is uninstalled, disconnect the electrical cables first and  
then the refrigerant connections. Refer to the outdoor unit  
installation instructions for tube sizing and limitations.  
Use field-supplied refrigerant grade piping designed for use  
with R-410A refrigerant.  
A. Flaring the Ends of Pipes  
Remove the protective caps from the copper pipe ends. Hold-  
ing the tube downward, cut the extreme end off, removing  
any copper shavings with a deburring blade. Remove the  
flare nuts from the “FLARE” connection body of the indoor  
unit and insert them into the pipes. Make the flare to the  
pipe end with the proper flaring tool. The flare end must not  
have any burrs or imperfections. The length of the flared  
walls must be uniform. See Fig. 18 and 19.  
Fig. 18 — Removing Burrs  
Lubricate the end of pipe and the thread of the flare connec-  
tion with anti-freeze oil. Tighten by hand and then use two  
wrenches to tighten all connections fully, applying the tight-  
ening torque shown in Table 5. Refer to Fig. 20.  
L
Table 5 — Tightening Torque  
L
TUBE DIAMETER  
(in.)  
TORQUE  
(ft-lb)  
3/8 in.  
5/8 in.  
3/4 in.  
31  
48  
74  
B. Piping Connection to the Unit  
Use two wrenches to tighten all connections.  
CAUTION: Insufficient tightening torque could  
cause a refrigerant leak from the connection. Excessive  
tightening torque will damage the pipe flare.  
Fig. 19 — Flared Walls are Equal  
Once all connections have been completed, check for leaks  
using soapy water. If no leaks were found, wrap connections  
with anti-condensate insulation and tighten with tape, with-  
out exerting excessive pressure on the insulation. Repair and  
cover any possible cracks in the insulation.  
1
CAUTION: DO NOT BURY MORE THAN 36 IN.  
OF REFRIGERANT PIPE IN THE GROUND. If any  
section of pipe is buried, there must be a 6-in. vertical  
rise to the valve connections on the outdoor unit. If  
more than the recommended length is buried, refriger-  
ant may migrate to cooler, buried section during  
extended periods of system shutdown. This causes  
refrigerant slugging and could possibly damage the  
compressor at start-up.  
3
Adjustable wrench or torque wrench  
Outdoor end  
2
Indoor end  
Fig. 20 — Tightening Connections  
—10—  
V. STEP 5 — MAKE ELECTRICAL CONNECTIONS  
unit, readily accessible, but out of reach of children. Provi-  
sion for locking the switch open (off) is advisable to prevent  
power from being turned on while unit is being serviced. Dis-  
connect switch, fuses, and field wiring must comply with the  
NEC and local code requirements. Use copper wire only  
between the disconnect switch and unit. Use minimum 60 C  
wire for the field power connection.  
WARNING: Unit cabinet must have an uninter-  
rupted, unbroken electrical ground to minimize the  
possibility of personal injury if an electrical fault  
should occur. This ground may consist of electrical  
wire connected to unit ground lug in control compart-  
ment, or conduit approved for electrical ground when  
installed in accordance with NEC, and local electrical  
codes. Failure to follow this warning could result in the  
installer being liable for the personal injury of others.  
Remove the external box cover. Route the low voltage wires  
from the outdoor unit to the indoor unit:  
7
1. Place wiring through /8 in. knockouts on the left or  
right hand side of external control box (low voltage  
side).  
CAUTION: Unit failure as a result of operation on  
improper line voltage or excessive phase imbalance  
constitutes abuse and may cause damage to electrical  
components. Such operation would invalidate any  
applicable Bryant warranty.  
2. Connect the R and Y wires to the 2 pin terminal block  
for cooling only units (619FNF) and heat pump units  
(619FNQ) that are matched to 538ENF outdoor units.  
3. Connect the R, Y, O, G, DT, A, and B wires to the  
(PGB-1) 1 terminal for 619FNQ indoor units matched  
with 538QNF outdoor units.  
WARNING: Electrical shock can cause personal  
injury and death. Shut off all power to this equipment  
during installation. There may be more than one dis-  
connect switch. Tag all disconnect locations to alert  
others not to restore power until work is completed.  
Route the line power leads from the indoor disconnect to the  
fan coil unit.  
7
1. Place wiring through /8 in. or 11/8 in. knockouts on  
the left and on the right hand side of external control  
box (high voltage side).  
2. Connect L1 to the black wire and L2 to the red wire  
using wire nuts and fix the ground wire between the  
2 washers.  
See Tables 6A and 6B for electrical information.  
A. Units With Electric Heater  
The unit is equipped with two thermostats: one with auto-  
matic reset and one with manual (electric) reset that can be  
reactivated by switching the power supply off and then  
back on.  
See Fig. 27 for a view of the internal control panel. The inter-  
nal control panel can be accessed by opening the grille and  
removing the metal cover attached by four screws.  
NOTE: The internal control panel does not need to be  
accessed during the installation process unless there is a  
need for service.  
B. Power Wiring (Fig. 21-26)  
The unit is factory wired for voltage shown on nameplate.  
Provide adequate, fused disconnect switch within sight from  
Table 6A — 619FNF Fan Coil Electrical Data  
VOLTAGE  
RANGE*  
FAN  
POWER  
MIN WIRE  
SIZE  
AWG  
SYSTEM  
SIZE  
CONDENSATE  
PUMP FLA  
LOUVER  
MOTOR FLA  
V-PH-Hz  
Motor Power  
(Watts)  
Min  
Max  
FLA  
MCA  
MOCP  
018  
024  
030  
036  
208/230-1-60  
208/230-1-60  
208/230-1-60  
208/230-1-60  
187  
187  
187  
187  
253  
253  
253  
253  
0.55  
0.50  
0.95  
0.95  
120  
110  
210  
210  
0.06  
0.06  
0.06  
0.06  
0.01  
0.01  
0.01  
0.01  
0.8  
0.7  
1.3  
1.3  
15  
15  
15  
15  
14  
14  
14  
14  
LEGEND  
AWG — American Wire Gage  
FLA — Full Load Amps  
MCA — Minimum Circuit Amps per NEC Section 430-24  
MOCP — Maximum Overcurrent Protection  
NEC — National Electrical Code  
*Permissible limits of the voltage range at which unit will operate  
satisfactorily.  
NOTE: In compliance with NEC requirements for multimotor and combina-  
tion load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-  
tective device for the unit shall be fuse or equipped with a breaker.  
Table 6B — 619FNQ Fan Coil Electrical Data  
VOLTAGE  
RANGE*  
ELECTRIC  
HEATERS  
MIN  
WIRE  
SIZE  
AWG  
FAN  
POWER  
SYSTEM  
SIZE  
CONDENSATE  
PUMP FLA  
LOUVER  
MOTOR FLA  
V-PH-Hz  
Motor Power  
(Watts)  
Min  
Max  
FLA  
kW  
FLA  
MCA MOCP  
018  
024  
030  
036  
208/230-1-60  
208/230-1-60  
208/230-1-60  
208/230-1-60  
187  
187  
187  
187  
253  
253  
253  
253  
0.50  
0.50  
0.95  
0.95  
110.0  
110.0  
210.0  
210.0  
0.06  
0.06  
0.06  
0.06  
0.01  
0.01  
0.01  
0.01  
3
3
3
3
12.5  
12.5  
12.5  
12.5  
16.3  
16.3  
16.9  
16.9  
20  
20  
20  
20  
12  
12  
12  
12  
LEGEND  
AWG — American Wire Gage  
FLA — Full Load Amps  
MCA — Minimum Circuit Amps per NEC Section 430-24  
MOCP — Maximum Overcurrent Protection  
NEC — National Electrical Code  
*Permissible limits of the voltage range at which unit will operate  
satisfactorily.  
NOTE: In compliance with NEC requirements for multimotor and combina-  
tion load equipment (refer to NEC Articles 430 and 440), the overcurrent pro-  
tective device for the unit shall be fuse or equipped with a breaker.  
—11—  
Room Controller  
Connections  
Low  
Voltage  
Outdoor Unit  
Connections  
Power  
Connections  
Ground  
Connection  
High  
Voltage  
Fig. 21 — 619FNF Unit Matched to 538ENF Outdoor Unit — Wiring Connection  
(Cooling Only System)  
—12—  
Room Controller  
Connections  
Low  
Voltage  
Outdoor Unit  
Connections  
Power  
Connections  
Ground  
Connection  
High  
Voltage  
Fig. 22 — 619FNQ Unit Matched to 538ENF Outdoor Unit — Wiring Connection  
(Cooling with Electric Heat System)  
—13—  
Room Controller  
Connections  
Low  
Voltage  
Outdoor Unit  
Connections  
Power  
Connections  
Ground  
Connection  
High  
Voltage  
Fig. 23 — 619FNQ Unit Matched to 538QNF Outdoor Unit — Wiring Connection  
(Heat Pump System)  
—14—  
DISPLAY  
TM-COIL  
TM-AIR  
MODULAR "D"  
CONTROL 1PCB  
BARE COPPER  
TO UNIT DISCONNECT  
(USE CABLE PROVIDED)  
EQUIP. GND  
619FNF GLOBAL CASSETTE  
538ENF OUTDOOR CONDENSER  
NOTE 7  
EQUIP GND  
208/230V  
1PH  
(SEE NOTE 9)  
TO OUTDOOR  
UNIT DISCONNECT  
TO CASSETTE  
TO CASSETTE  
NOTE 8  
NOTES:  
LEGEND  
1. If any of the original wire furnished must be replaced, it must be  
replaced with Type 90° C wire or its equivalent.  
2. Wire in accordance with National Electrical Code (NEC) and local  
codes.  
1PCB  
Main Control Printed  
OFM  
OL  
S
Outdoor Fan Motor  
Overload  
Emergency  
Terminal Block  
Sensor  
Circuit Board  
2PCB  
C
CAP  
CH  
Display Board  
Contactor  
3. Compressor and fan motors are protected by internal thermal  
overloads.  
TB  
TM  
Capacitor  
Crankcase Heater  
Crankcase Heater Switch  
Compressor  
4. Indoor unit transformer has internal 2A thermal fuse on the primary  
side.  
5. Infrared (IR) connection to be inserted on “J5” (replace the actual  
factory-installed “CRC” connector) for IR option.  
6. Terminal strip for Carrier Room Controller (CRC) connection.  
7. Compressor crankcase heater installed on 538QNF035 and  
538QNF030 only.  
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move  
the black wire to the 208-v tap.  
9. Use minimum 60° C wire for the field power wiring.  
TRAN — Transformer  
CHS  
COMP  
CRC  
DP  
Terminal (Marked)  
Carrier Room Controller  
Drain Pump  
Equipment Ground  
Terminal (Unmarked)  
Splice  
EQUIP.  
GND  
FC  
Terminal Block  
Fan Capacitor  
Float Switch  
Ground  
High Pressure Switch  
Indoor Fan Motor  
Infrared  
Indoor Test Point  
Liquid Low Pressure  
Switch  
Louver Motor  
Louver Micro Switch  
FS  
Factory Wiring  
GND  
HPS  
IFM  
Field Control Wiring  
Field Power Wiring  
Accessory or Optional Wiring  
Plug Connector  
THERMISTOR EQUIVALENCE  
IR  
TEMPERATURE  
RESISTANCE  
ITP  
°F  
95  
72  
32  
°C  
35  
22  
0
LLPS  
6,500  
11,400  
32,500  
LM  
LMS  
NOTE: All thermistors are identical.  
Fig. 24 — 619FNF/538ENF Cooling Only System Wiring Diagram  
—15—  
DISPLAY  
TM-COIL  
TM-AIR  
MODULAR "D"  
CONTROL 1PCB  
BARE COPPER  
TO UNIT DISCONNECT  
(USE CABLE PROVIDED)  
EQUIP. GND  
619FNQ GLOBAL CASSETTE  
538ENF OUTDOOR CONDENSER  
EQUIP GND  
208/230V  
1PH  
NOTE 7  
(SEE NOTE 9)  
TO OUTDOOR  
UNIT DISCONNECT  
TO CASSETTE  
TO CASSETTE  
NOTE 8  
NOTES:  
LEGEND  
1. If any of the original wire furnished must be replaced, it must be  
replaced with Type 90° C wire or its equivalent.  
2. Wire in accordance with National Electrical Code (NEC) and local  
codes.  
1PCB  
Main Control Printed  
Circuit Board  
LMS  
OFM  
OL  
S
Louver Micro Switch  
Outdoor Fan Motor  
Overload  
2PCB  
3PCB  
Display Board  
Printed Circuit Board for  
Electric Heat  
Contactor  
Capacitor  
3. Compressor and fan motors are protected by internal thermal  
overloads.  
Emergency  
ST  
Safety Thermostat  
Terminal Block  
Sensor  
C
CAP  
CH  
CHS  
COMP  
CRC  
DP  
4. Indoor unit transformer has internal 2A thermal fuse on the primary  
side.  
5. Infrared (IR) connection to be inserted on “J5” (replace the actual  
factory-installed “CRC” connector) for IR control.  
6. Terminal strip for Carrier Room Controller (CRC) connection.  
7. Compressor crankcase heater installed on 538QNF035 and  
538QNF030 only.  
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move  
the black wire to the 208-v tap.  
9. Use minimum 60° C wire for the field power wiring.  
TB  
TM  
Crankcase Heater  
Crankcase Heater Switch  
Compressor  
TRAN — Transformer  
Terminal (Marked)  
Carrier Room Controller  
Drain Pump  
Terminal (Unmarked)  
Splice  
E-HTR  
EQUIP.  
GND  
FC  
Electric Heater  
Equipment Ground  
Terminal Block  
Fan Capacitor  
Float Switch  
Ground  
High Pressure Switch  
Indoor Fan Motor  
Infrared  
Factory Wiring  
THERMISTOR EQUIVALENCE  
FS  
GND.  
HPS  
IFM  
TEMPERATURE  
RESISTANCE  
Field Control Wiring  
Field Power Wiring  
Accessory or Optional Wiring  
Plug Connector  
°F  
95  
72  
32  
°C  
35  
22  
0
6,500  
11,400  
32,500  
IR  
ITP  
Indoor Test Point  
Liquid Low Pressure  
Switch  
LLPS  
NOTE: All thermistors are identical.  
LM  
Louver Motor  
Fig. 25 — 619FNQ/538ENF Heat/Cool System Wiring Diagram with Electric Heaters  
—16—  
DISPLAY  
TM-COIL  
TM-AIR  
OUTDR DEFROST  
MODULAR "D"  
CONTROL 1PCB  
BARE COPPER  
TO UNIT DISCONNECT  
(USE CABLE PROVIDED)  
EQUIP. GND  
619FNQ GLOBAL CASSETTE  
538QNF OUTDOOR CONDENSER  
208/230V  
1PH  
EQUIP GND  
NOTE 7  
(SEE NOTE 9)  
TO OUTDOOR  
UNIT DISCONNECT  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
TO CASSETTE  
NOTE 8  
LEGEND  
NOTES:  
1. If any of the original wire furnished must be replaced, it must be  
replaced with Type 90° C wire or its equivalent.  
2. Wire in accordance with National Electrical Code (NEC) and local  
codes.  
1PCB  
Main Control Printed  
Circuit Board  
OAS  
Outdoor Air Sensor  
Outdoor Fan Motor  
Outdoor Fan Relay  
Overload  
OFM  
OFR  
OL  
2PCB  
3PCB  
Display Board  
Printed Circuit Board for  
Electric Heat  
3. Compressor and fan motors are protected by internal thermal  
overloads.  
RVS  
S
Reversing Valve Solenoid  
Emergency  
C
CAP  
CH  
Contactor  
4. Indoor unit transformer has internal 2A thermal fuse on the primary  
side.  
5. Infrared (IR) connection to be inserted on “J5” (replace the actual  
factory-installed “CRC” connector) for IR option.  
6. Terminal strip for Carrier Room Controller (CRC) connection.  
7. Compressor crankcase heater installed on 538QNF035 and  
538QNF030 only.  
8. Outdoor unit transformer is factory wired for 230 v. For 208 v move the  
black wire to the 208-v tap.  
9. Use minimum 60° C wire for the field power wiring.  
Capacitor  
ST  
Safety Thermostat  
Terminal Block  
Sensor  
Crankcase Heater  
TB  
CHS  
COMP  
CRC  
DFT  
DP  
Crankcase Heater Switch  
Compressor  
TM  
TRAN — Transformer  
Carrier Room Controller  
Defrost Thermostat  
Drain Pump  
Terminal (Marked)  
Terminal (Unmarked)  
Splice  
E-HTR  
Electric Heater  
EQUIP. — Equipment Ground  
GND  
Terminal Block  
FC  
Fan Capacitor  
THERMISTOR EQUIVALENCE  
FS  
Float Switch  
TEMPERATURE  
RESISTANCE  
Factory Wiring  
GND  
HPS  
IFM  
IR  
Ground  
°F  
95  
72  
32  
°C  
35  
22  
0
High Pressure Switch  
Indoor Fan Motor  
Infrared  
Field Control Wiring  
Field Power Wiring  
Accessory or Optional Wiring  
Plug Connector  
6,500  
11,400  
32,500  
ITP  
Indoor Test Point  
Liquid Low Pressure Switch  
Louver Motor  
LLPS  
LM  
NOTE: All thermistors are identical.  
LMS  
Louver Micro Switch  
Fig. 26 — 619FNQ/538QNF Heat Pump System Wiring Diagram with Electric Heaters  
—17—  
CA  
CLR  
CG  
CP  
CV  
C
G
CV  
CP  
CLR  
CA  
INTERNAL CONTROL PANEL  
619FNF018  
INTERNAL CONTROL PANEL  
619FNF024, 03036  
619FNQ01824, 03036  
Capacitor  
GMC board  
Electric heater board  
(only on models with electric heater)  
Transformer  
Holes for fixing panel in position  
Emergency push-button  
CV  
Fan connector  
LED/RECEIVER connector  
Float connector  
Pump connector  
Louver connector  
CLR  
CG  
CP  
CA  
Fig. 27 — Internal Control Panel  
—18—  
C. Wiring the Room Controller  
INSTALLATION OPTIONS  
The room controller is capable of controlling from 1 to 6 fan  
coil units. The total run length of the wire connecting the  
room controller to the fan coil units should be kept to under  
500 feet. Wire the room controller to the unit using daisy  
chain wiring. See Fig. 28. The room controller connects to  
the receiver board connection on the electronic board inside  
the unit.  
The 619FNF, FNQ units can be used to cool an adjacent  
room or for fresh-air ventilation. Plan the installation care-  
fully. Measure carefully and follow acceptable building prac-  
tices and the National Electric Code (NEC).  
I. FRESH AIR INTAKE  
1. Using Fig. 30, locate and remove the factory-installed  
insulation from the side of the unit where the  
pre-punched knockouts are located.  
Wiring the Power Connection to the Room Controller  
The thermostat will be powered by unregulated nominal  
12.5 volts DC (10V min to 20V max) which is provided by the  
electronic board inside the unit. The power consumption will  
be 50 mA 12.5 volts DC. For applications where more than  
one fan coil unit is to be controlled, the fan coil unit closest to  
the room controller will be the only one that supplies power  
to the room controller. The control should be protected from  
damage in case of accidental wiring of power, ground and  
signal wiring occurs.  
2. Remove the pre-punched knockouts for fresh air  
intake. Refer to Fig. 30. Be careful not to damage  
internal parts such as the heat exchanger coil.  
3. If installing a 619FNF018 unit, install baffle. Refer to  
Fig. 30.  
4. Install ductwork using field-supplied, insulated flex  
duct, or insulated sheet metal suitable for working  
temperatures up to 140 F. Conduits can be of flexible  
polyester (with spiral core) or corrugated aluminum,  
externally covered with anti-condensate material  
(fiberglass from 1/4 in. to 1 in. thickness).  
Wiring the Room Controller to the Indoor Unit  
Loosen the screws of terminals P (DC Power), G (GROUND)  
and C (SIGNAL) on the indoor unit and room controller  
terminal blocks. Refer to Fig. 29 and connect the indoor unit  
terminal block to the room controller terminal block.  
5. Use Fig. 31 to determine the allowable static pres-  
sure loss for the ductwork airflow. The ductwork  
design must not exceed this value or the job airflow  
requirements will not be met.  
6. Use a field-supplied fan if airflow does not meet job  
requirements. The field-supplied fan motor for out-  
side air intake must be controlled by a bipolar ON/  
OFF switch with safety fuses.  
REMOTE  
FCU 1  
FCU 2  
FCU 3  
FCU 6  
IMPORTANT: Ventilated air must not exceed 10% of the total  
airflow or problems with operation will result. If the venti-  
lated air surpasses 10% of the total airflow, a field-supplied  
primary air treatment system with separate deflectors is  
recommended.  
7. Install an air inlet grille with filter inspection port to  
prevent dust and dirt from entering and fouling the  
indoor unit heat exchanger. Filter installation also  
makes the installation of a duct closing damper dur-  
ing shutdown periods unnecessary.  
8. All non-insulated ducts must be covered with anti-  
condensate insulation (such as expanded neoprene,  
1/4 in. thickness).  
Fig. 28 — Room Controller Daisy Chain Wiring  
(Multidrop)  
II. CONDITIONED AIR SUPPLY TO ADJACENT ROOM  
Diagram 1  
Air supply to an adjacent room requires that the outlet corre-  
sponding with the duct is closed, using the air supply outlet  
obstruction accessory kit.  
NOTE: The accessory kit cannot be used in units equipped  
with an electric heater.  
Red  
Black  
White  
P
P
G
C
G
C
An air inlet grille must be fitted (if possible near the floor)  
between the air conditioned room (where the unit is situ-  
ated) and the adjacent room or, alternatively, the door must  
be undercut, as shown in Fig. 30. The duct lengths can be  
calculated in accordance with Fig. 30, also taking into  
account the pressure drop through air diffusers and fresh air  
filters.  
A
B
Remote connector  
(J5) 5 pins  
Main electronic card  
4 pins terminal block placed on external  
control box  
A
B
Indoor unit  
Wires supplied by the installer  
Terminal block in the Room Controller  
Room Controller  
IMPORTANT: DO NOT use active carbon or electrostatic  
filter kits for ducts towards adjacent rooms.  
Fig. 29 — Wiring the Room Controller to  
the Indoor Unit  
—19—  
B
Ø A  
Ø C  
Ø A  
Duct connection flange  
Clip  
1/4" (6 mm) neoprene gasket  
Insulated flexible duct  
Fresh air intake  
Conditioned air supply to an  
adjacent room  
Polystyrene partition  
Baffle (619FNF018 only)  
Frame  
619FNF024, 03036  
Unit  
Ø A  
B
619FNF018  
5-29/32"(150 mm)  
4-3/4"(120 mm)  
2-3/4"(70 mm)  
619FNQ01824, 03036  
5-29/32"(150 mm)  
4-3/4"(120 mm)  
Ø C  
3-15/16"(100 mm)  
NOTE: Dimensions in ( ) are in mm.  
Air intake grille  
Wall  
Undercut door  
Wall-fitted grille  
Door-fitted grille  
Fig. 30 — Installation Options  
Supply air duct to adjacent room  
0.18  
0.16  
0.14  
0.12  
619FNF, FNQ03036  
0.1  
0.08  
0.06  
619FNF018, 024  
619FNQ01824  
0.04  
0.02  
0
150  
200  
250  
0
50  
100  
Airflow (cfm)  
NOTE: When two louvers are closed, the fresh airflow towards the adjacent room is 50% higher than when  
one louver is closed (with equal static external pressure).  
Fig. 31 — Pressure Drop for Conditioned Air Supply to an Adjacent Room: One Louver Closed  
—20—  
III. ROOM CONTROLLER CONFIGURATION SETUP  
C — The Room Controller will allow and display the  
following modes:  
To configure the room controller, press the Mode button for  
5 seconds. After 5 seconds, “10” will appear. This indicates  
that the user is setting the first software configuration item.  
To display the value of configuration item 10, press the Mode  
button again. The value of the Heat/Cool vs Cooling only  
remote configuration will be displayed along with the “Set  
Temp” icon to indicate that the number displayed is the con-  
figuration data. Refer to Table 7 for configuration values. To  
change the Heat/Cool vs Cooling only remote Configuration,  
press the Up and Down buttons. To move to the next setting,  
press the Mode button again and the “10” will be displayed.  
Press the up button and the display will change to “11.”  
Refer to Fig. 32. The Mode button will toggle the display  
between the items and the configuration value. The Up and  
Down buttons will change either the index or the value,  
whichever is displayed at the time. Press the Fan button to  
exit the Configuration Setup Mode. This mode will exit auto-  
matically after 10 seconds of inactivity. Once a configuration  
value is changed, the last value displayed will be the new  
configuration value for the room controller.  
•Off  
•Fan  
•Cool  
•Dry  
2. Configuration Item 11: Room Thermistor Override  
On — Room Thermistor Override is active. Units will  
be controlled to the air temperature displayed via the  
Room Controller.  
Of (Off) — Room Thermistor Override is not active.  
All units will be controlled to the room air ther-  
mistors located on the units.  
3. Configuration Item 12: Celsius vs Fahrenheit  
C — Temperatures will be displayed in degrees  
Celsius.  
F — Temperatures will be displayed in degrees  
Fahrenheit.  
IV. LOUVER MODE SELECTION  
NOTE: The only way to abort a configuration change is to  
change the value back to its original value.  
To enter louver mode selection, ensure the room controller is  
on and then press the Fan button for 5 seconds. After 5 sec-  
onds, the selected louver setting will be displayed. Press the  
up and down arrows to modify the louver setting between  
swing and auto. Refer to Fig. 33. The two settings will be dis-  
played as follows:  
Table 7 — Room Controller Configuration Values  
ITEM  
10  
VALUE  
DESCRIPTION  
Heat/Cool Remote  
Cooling Only Remote  
H*  
C
S with Swing Louver Icon  
A with Auto Louver Icon  
Represents the swing louver  
Represents the auto louver  
Room Thermistor Override  
Active.  
On  
Control and display room air  
temperature at the room con-  
troller. Room Thermistor Over-  
ride Inactive. Do not display  
room air temperature at the  
room controller and control to  
unit room air thermistor(s).  
The fan icon will also be displayed in the louver mode. Press  
Fan button to exit the Louver Mode selection. This mode will  
exit automatically after 10 seconds of inactivity. The only  
way to abort a louver change is to change the value back to  
its original value.  
11  
Of*  
Temperatures displayed in  
degrees Celsius.  
Temperatures displayed in  
degrees Fahrenheit.  
NOTE: If units are grouped to one room controller, all units  
will have the same louver value. Louver Mode selection is  
not available during OFF mode.  
C*  
F
12  
V. MAIN BOARD CONFIGURATION  
* Factory default.  
To configure the main electronic board, push the Up and  
Down arrows for 5 seconds while the room controller is off.  
1. Configuration Item 10: Heat Pump vs Cooling Mode  
H — The Room Controller will allow and display the  
following modes:  
After 5 seconds, a “20” will appear. This indicates that the  
user is setting the first software configuration item. To check  
the value of configuration item “20,” press the Mode button.  
The value for the Heat Pump/AC Only configuration will be  
displayed. To change the value, use the Up and Down  
buttons. Once the desired value is selected, press the Fan  
button to send that configuration data to the unit. Refer to  
Table 8.  
•Off  
•Fan  
•Auto  
•Cool  
•Dry  
•Heat  
up  
Keep it pressed for  
at least 5 seconds  
Check the  
value  
Change the  
value  
Next  
item  
down  
A
To check/change  
the values of items  
11 and 12 go back  
to point A  
up  
down  
Fig. 32 — Room Controller Configuration Steps  
—21—  
up  
Room Controller  
ON  
Keep it pressed  
for 5 seconds  
To change  
the value  
Automatic  
(AUTO)  
down  
Or  
Continuous  
movement  
(swing)  
Fig. 33 — Selecting the Louver Mode  
Down button to send a message of Off mode to the unit. Ser-  
vice Test mode automatically times out after 30 minutes and  
the remote will operate normally.  
Table 8 — Modular Platform D Unit Configuration Values  
ITEM  
20  
VALUE  
1: Heat Pump  
0: AC only (indoor unit with  
or without electric heaters)  
COMMENT  
When test mode is selected, the unit will operate as  
described below:  
Unit Configuration  
defaults to heat pump  
• The Unit Status (Green) and Timer (Yellow) LEDs blink  
every 2 seconds.  
• The indoor fan will operate according to user-selected  
speed. If user-selected speed is Auto, the fan will run in  
High speed.  
• If the unit is configured as an A/C Only unit, it will oper-  
ate in cool mode with demand.  
• If the unit is configured as a Heat Pump unit, the louver  
will operate according to user-selected position. If user  
selected louver is Auto, louver operates according to auto  
heat or cool louver based on operating mode.  
• The unit will run in cool mode for 3 minutes, then it will  
run in heat mode for 2 minutes, or until the indoor coil is  
greater than 104 F. The unit will run in cool mode until  
test mode is exited.  
CCN Address of the unit.  
Defaults to 1.  
21  
1-199 in increments of 1  
0-199 in increments of 1  
To display the hundreds,  
push  
.
Zone number -  
Communications zone  
the system is located in  
Defaults to 0  
22  
24  
To display the hundreds,  
push  
.
0: Start in Off mode  
1: Start in last active mode  
Auto Restart  
Defaults to “On”  
Only the current value being displayed is transmitted. Once  
the Fan button is pressed, the room controller will switch to  
displaying the configuration item number. To move to the  
next setting, press the Mode button again and the “20” will  
be displayed. Press the Up button and the display will  
change to “21.” The Mode button will toggle the display  
between the software configuration item number (i.e., “20,”  
“21,” etc.) and the configuration value. The Up and Down  
buttons will change either the item number or the value,  
whichever is displayed at the time.  
Any of the following will cancel the Service Test mode:  
• When the unit is turned off by the controller.  
• If the power is cycled during the Test Mode, the unit will  
return to its normal operating mode.  
• After 30 minutes of receiving the last valid test request  
message.  
• Fail Mode.  
This mode will exit automatically after 30 seconds of  
inactivity.  
START-UP  
The following checks should be made before system start-up.  
Refer to outdoor unit Installation, Start-Up, and Service  
manual for system start-up instructions and refrigerant  
charging methods. Be sure to use the refrigerant charge  
shown in Table 3.  
NOTE: If units are grouped to one room controller, all units  
will have the same configuration value.  
VI. SERVICE TEST MODE  
Prior to start-up, conduct the Service Test mode to ensure  
the unit is ready for start-up.  
1. Check condensate drainage system.  
a. Remove grille and frame from the unit.  
b. On the opposite side of the drain connection,  
insert a water bottle up into the fan coil unit and  
fill drain pan. Refer to Fig. 34. Water must flow  
regularly with condensate pump energized. If  
water does not, check the pipe slope or see if  
there are any pipe restrictions.  
There is a hidden Service Test mode that is initiated through  
a combination of button presses when the remote is off. The  
following buttons need to be pressed, in sequence, within  
6 seconds:  
1. Down arrow  
2. Fan button  
3. Up arrow  
NOTE: The unit is equipped with a safety float  
switch to deenergize the compressor if the drain  
water level gets too high.  
4. Fan button  
5. Mode button  
2. Make sure that all wiring connections are correct and  
that they are tight.  
Once in Service Test mode, the Service Test mode message  
will be sent, and Sr will be displayed in the temperature  
icons until the Down button is pressed. During Service Test  
mode all the icons are off, and the only button that is active  
is the Down button. To cancel Service Test mode, press the  
3. Make sure that all barriers, covers, and panels are in  
place.  
—22—  
2. Remove the air intake and distribution assembly.  
Remove the condensate water in the drain pan by  
pulling out the rubber drain plug and letting water  
drain into a 3-gallon bucket.  
CAUTION: Do not use a screw driver to pry drain  
pan out of assembly. It could damage the pan.  
3. Remove screws holding the drain pan. Carefully hold  
the drain pan to remove it from the assembly.  
4. Reinstall the drain pan using the appropriate num-  
ber of screws. Center and align the metal fan inlet  
orifice with the fan. Ensure the fan spins freely.  
Fig. 34 — Inserting Water into Drain Pan  
TROUBLESHOOTING  
See Table 9 and Fig. 35 for troubleshooting information.  
4. Ensure that the filters and return air grilles have  
been installed and that the discharge louvers are  
correctly positioned.  
I. FAULT CODE  
Once a failure occurs with the indoor unit in operation, the  
green LED on the indoor unit flashes at intervals of 0.5 sec-  
onds. The fault code is deduced from the number of times the  
green LED flashes, blocking unit operation. Between one  
flash cycle and the next one, a pause of 5 seconds elapses.  
See Fig. 35.  
CAUTION: Never operate unit without a filter or  
with grille removed. Damage to the unit or personal  
injury may result.  
SERVICE AND MAINTENANCE  
Table 9 — Fault Codes  
Remove unit grille, filter, and condensate pan for cleaning,  
lubricating, or replacing parts.  
CODE  
2
DESCRIPTION  
Condensate discharge pump  
Room air sensor fault  
Indoor unit coil sensor fault  
Filter dirty  
CAUTION: To avoid personal injury or damage to  
unit, do not service until all power sources are shut  
down, locked out, and tagged out. Failure to do so could  
result in personal injury or unit damage.  
3
4
6*  
7
Outdoor unit failure  
I. MINIMUM MAINTENANCE  
10  
11  
12  
13  
14  
EEPROM corrupt  
Card serial number damaged  
Address or zone incomplete  
Gas flow distributor corrupt  
Outdoor air thermistor fault  
1. Check, clean, or replace air filter each month or as  
required.  
2. Check cooling coil, drain pan, condensate trap, and  
condensate drain pan each cooling season for cleanli-  
ness. Clean as necessary.  
*When code is enabled.  
3. Check fan motor and wheel for cleanliness each heat-  
ing and cooling season.  
A. Using the Emergency Button  
The Emergency button is for use by a qualified service tech-  
nician only. The Emergency button is for use when the room  
controller is inoperative. Use a screwdriver to press the  
emergency button through the metal protection grille. See  
Fig. 35.  
4. Check electrical connections for tightness and con-  
trols for proper operation each heating and cooling  
season. Service as necessary.  
II. SERVICE  
A. To Clean or Replace Air Filters  
Emergency Operation  
1. Place a plastic sheet on the floor to catch any water  
that may spill from drain pan.  
When the unit is in the OFF mode and the Emergency but-  
ton is pressed for 5 seconds, the unit will operate as follows:  
2. Slide filter out.  
• Automatic mode  
• temperature preset to 72 F  
• automatic fan speed  
• louvers set automatically according to the operating mode  
• Timer function is cancelled  
• buzzer beeps  
3. Vacuum clean or wash filter with soapy water. Rinse  
and let air dry. If filter needs replacing, filters are  
available from the local dealer.  
CAUTION: If air filter is not replaced in the unit,  
dust and dirt gather in air conditioner and operation  
becomes impaired.  
When the unit is ON and the Emergency button is pressed  
for 5 seconds, the unit will operate as follows:  
• the unit is turned off  
• buzzer beeps  
B. To Clean or Replace Drain Pan  
1. Place a plastic sheet on the floor to catch any water  
that may spill from drain pan.  
When a signal is received by the remote control, the unit  
operates accordingly.  
—23—  
Remote control  
signal receiver  
Red  
LED  
Emergency  
Button  
Green  
LED  
Yellow  
LED  
Fig. 35 — Warning Lamps and Emergency Button  
Copyright 2006 Bryant Heating & Cooling Systems  
Printed in U.S.A.  
CATALOG NO. 02-619F0001-II  

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