Heat Controller Inc Air Conditioner EKTC User Manual

HEAT CONTROLLER, INC.  
Installation Operation  
and Maintenance  
Packaged Terminal  
AC/Heat Pumps  
EKTC/EKTH  
M Series  
HEAT CONTROLLER, INC.  
1900 Wellworth Ave., Jackson, Michigan 49203 • Ph. 517-787-2100 • Fax 517-787-9341 • www.heatcontroller.com  
THE QUALITY LEADER IN CONDITIONING AIR  
Contents  
Unit Features ........................................................................................... 3  
General Information ................................................................................ 5  
Installation Instructions.......................................................................... 6  
Wiring ....................................................................................................... 8  
Operating Instructions............................................................................ 9  
Obtaining Service.................................................................................. 16  
Normal Operating Sounds and Conditions ........................................ 17  
Configuration Settings ......................................................................... 17  
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.  
IMPORTANT NOTE TO THE OWNER  
This equipment is to be serviced by professionally trained personnel only. If this equipment is improperly installed, adjusted or altered  
by an unqualified person, a safety hazard may result.  
IMPORTANT NOTE TO THE SERVICER  
Read this manual and familiarize yourself with the specific items which must be adhered to before attempting to service this unit. The  
precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is a direct conflict  
between existing practices and the content of this manual, the precautions listed here take precedence.  
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.  
Before using this manual, check the serial plate for proper model identification.  
THE INSTALLATION AND SERVICING OF THIS EQUIPMENT MUST BE PERFORMED BY QUALIFIED,  
EXPERIENCED TECHNICIANS ONLY.  
Due to policy of continual product improvement, the right is reserved to change  
specifications and design without notice.  
2
Unit Features  
This unit has many features which are different than those found on conventional PTAC units. The servicer must be familiar with  
these features in order to properly service the unit.  
LCDI or AFCI Power Cords - Underwrites Laboratories and the  
National Electric Code (NEC) now require power cords that  
sense current leakage and can open the electrical circuit to the  
unit on units rated at 250 volts or less. In the event that unit  
does not operate, check the reset button located on or near the  
head of the power cord as part of the normal troubleshooting  
procedure.  
Indication LEDs - The touch pad has LEDs that corre-  
spond to fan operation and to indicate unit status. The  
LEDs next to the selections OFF, COOL, and HEAT in-  
dicate which operational mode is active. The LED lo-  
cated in the lower left corner is a status LED. This LED  
indicates the status of the unit. See Diagnostic Mainte-  
nance & Status Report section for further details.  
LCDI power Cord  
Automatic 3-minute compressor lockout - After the compres-  
sor cycles off, it will not restart for three minutes.  
Automatic 2nd stage electric heat - If the room temperature  
falls to 4°F below the set point temperature, the reverse cycle  
heat is shut off and the electric strip heat is turned on.  
Status LED  
Automatic freeze protection - Whenever power is supplied to  
the unit and the master switch is in the ON position, automatic  
freeze protection is active. If the unit senses temperature below  
40°F, the fan motor and electric strip heat are turned on. Freeze  
protection can be turned off, if required.  
Touch Pad  
Load shedding - An LS terminal has been added for  
load shedding operations. If at any time a switch is  
closed between the LS and IN terminals, the compres-  
sor and electric heater will lockout until the switch is  
opened.  
Random restart delay - To help eliminate power surges after a  
power outage, the unit is equipped with a two to four minute  
random restart delay feature. Whenever the unit is plugged in  
with the master switch turned on and the mode switch set in the  
cool or heat mode, a random restart will occur. A random restart  
condition can be avoided by setting the mode switch in the fan  
only or off position before applying power to the unit.  
Transfer fan - Terminals TF(-) and TF(+) on the low  
voltage terminal board allow for an external (transfer)  
fan connection. A user-supplied relay is required and,  
depending upon the type used, an approved external  
transformer kit may be required for installation.  
Fuse holder - On all 265 volt units, fuse holders are factory in-  
stalled. Check for blown fuse if unit does not operate. Fuse  
holder is located behind the front. Replacement fuses may be  
purchased from the Parts Department or contact your sales rep-  
resentative for part numbers.  
NOTE: The PTAC Wire Harness Kit (PWHK01C) is required  
when using either the transfer fan or load shedding option.  
Front mounting hole - A mounting hole is provided to  
give the owner the option of securing the front to the  
chassis. The mounting hole is located behind the air  
intake grille. The owner must supply one 1/2 inch long  
#8 sheet metal screw per unit. The screw must be re-  
moved before the front can be removed.  
Front Mounting  
Hole  
FUSE  
HOLDERS  
Control Panel  
Chassis Front  
3
Unit Features  
Energy Management System Features  
Temperature Setback - This option can save energy dollars  
for unrented or unoccupied rooms by automatically setting  
back the operational temperatures. This mode of operation  
is selected through the configuration routine (see Configu-  
ration Settings section). If none of the keys on the control  
pad have been pressed for an 18-hour period. The unit will  
automatically go into a 3-stage setback routine; after 30  
minutes, a 1 degrees setback; after 3 hours, 3 degrees, and  
at 8 hours, a 7-degree setback. NOTE: Temperature set-  
back does not work with a wired remote thermostat .  
Door Switch and Motion Sensor Low Voltage Terminals  
(DS1, DS2, MS1, MS2) - The door switch and motion sen-  
sor operate as a unit, the door switch terminals allows for  
wired connection of a door sensor to the control board. The  
motion sensor interprets any door movement as a signal of  
occupancy. If the switch between DS1 and DS2 is closed,  
the door control will interpret the room door as closed. If  
the switch between MS1 and MS2 terminals is opened (or  
closed if unit is configured for normally open) the control will  
interpret the action as a signal of occupancy. If thirty min-  
utes pass without any door activity, Energy Management  
Temperature setback activates.  
Serial Port Interfaces - Two serial ports located on the con-  
trol board provide easy access for two-way communications  
to the control board from handheld PDA devices. An op-  
tional RF antennae can be attached for wireless communi-  
cations.  
4
TRANSPORTATION DAMAGE  
All units are securely packed in shipping containers tested according to International Safe Transit Association specifications. The  
carton must be checked upon arrival for external damage. If damage is found, a written request for inspection by the carrier’s agent  
must be made immediately.  
In the event of damage, the consignee must:  
1. Make notation on delivery receipt of any visible damage to shipment or container.  
2. Notify carrier promptly and request an inspection.  
3. In case of concealed damage, carrier should be notified as soon as possible—preferably within 5 days.  
4. File the claim with the following supporting documents within the 6 month statute of limitations.  
a. Original Bill of Lading, certified copy, or indemnity bond.  
b. Original paid freight bill or indemnity in lieu thereof.  
c. Original invoice or certified copy thereof, showing trade and other discounts or reductions.  
d. Copy of the inspection report issued by carrier’s 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.  
UNIT ACCESSORIES  
This unit is designed for through-the-wall installation in new or existing buildings. To complete the installation of this PTAC, an  
insulated wall sleeve and an outdoor grille (either the stamped aluminum grille or the architectural grille) are required.  
The chassis and the cabinet front are shipped in one carton.  
5
Installation Instructions  
To ensure that the unit operates safely and efficiently, it must be installed, operated and maintained according to these installation  
and operating instructions and all local codes and ordinances or, in their absence, with the latest edition of the National Electric  
Code. The proper installation of this unit is described in the following sections. Following the steps in the order presented should  
ensure proper installation.  
WARNING  
Rear Closure  
Panel  
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO  
ELECTRICAL SHOCK, YOU MUST:  
ONLY  
IN THE  
MAKE SURE THE ELECTRICAL ACCESSORIES ARE INSTALLED  
PRE-DRILLED MOUNTING HOLES.  
Flaps  
MAKE SURE THE ELECTRICAL WIRING IS NOT INSTALLED AND DOES NOT  
BELOW  
HANG  
THE PRE-DRILLED MOUNTING HOLES OR LIE IN THE UNIT  
BASE PAN.  
Stiffener Removal  
SLEEVE STIFFENER AND REAR CLOSURE PANEL  
REMOVAL  
Before the chassis can be installed in the wall sleeve, the sleeve  
stiffener and the rear closure panel must be removed.  
1. Remove the zigzag folded cardboard sleeve stiffener.  
2. Remove the rear closure panel by folding the four flaps.  
3. Grasping the top and bottom flanges of the rear closure panel  
pull the entire panel out diagonally from one side.  
Rear Enclosure Panel Removal  
DRAIN KIT INSTALLATION (Optional Accessory)  
During normal reverse cycle heating operation, condensate water  
will drain out of the rear of the wall sleeve. If this water is  
objectionable, a drain kit should be installed. The drain kit has  
provisions for draining the water from either the right or left side  
of the sleeve externally or from the bottom of the sleeve inter-  
nally. The drain kit must be installed before the outdoor grille is  
installed. Refer to the Installation Instructions supplied with the  
drain kit for a complete description of the installation procedure.  
Sleeve  
Stiffener  
Wall Sleeve with Stiffener  
6
Installation Instructions  
2. Pull the bottom of the cabinet front away from the chassis until  
SLEEVE INSTALLATION  
the retaining clips disengage. NOTE: If front is secured with  
screws, remove front mounting screw, then follow front re-  
moval procedure.  
In order for condensate water to drain properly inside the unit, the  
sleeve must be installed properly:  
• Level from right to left.  
• A slight downward pitch from the indoor side to the outdoor  
side as shown below.  
Refer to the Installation Instructions supplied with the PTAC wall  
sleeve for a complete description of the installation procedure.  
Level  
Inside  
Outside  
1/4 Bubble  
Tilt To  
Outside  
Wall  
Sleeve  
Cabinet Front Removal View 2  
Front Mounting  
Hole  
Outside  
Wall  
Proper Sleeve Tilt  
OUTDOOR GRILLE  
An outside grille must be installed to direct air flow for proper unit  
operation and also protect the outdoor coil. The grille must be  
installed before installing the chassis. Refer to the Installation  
Instructions supplied with the outdoor grille kit for a complete  
description of the installation procedure.  
Front Mounting Screw  
This model requires either a Stamped Grille Kit (Model SGK--B),  
a Polymer Grille Kit (Model PGK) or an Architectural Grille Kit  
(Model AGK--B). When replacing an old chassis with an existing  
grille or using a specialized grille in a new installation, please  
check with your sales representative to determine if the new  
chassis should be used with the non-standard specialized grille.  
An improper outdoor grille can decrease cooling or heating  
capacity, increase energy usage and shorten compressor life and  
possibly void the warranty.  
3. Lift the cabinet front off the chassis. Reverse this procedure to  
reinstall the cabinet front.  
CHASSIS INSTALLATION  
1. Remove the cabinet front from the chassis as described in  
Front Removal.  
2. Insert the chassis into the wall sleeve.  
Wall Sleeve  
Chassis  
FRONT REMOVAL  
1. Grasp the cabinet front.  
Outside  
Slide Chassis In  
Wall  
Chassis Installation View 1  
3. Slide the chassis into the wall sleeve until the chassis flanges  
contact the front edge of the wall sleeve.  
Cabinet Front Removal View 1  
7
Installation Instructions  
4. Secure the chassis to the wall sleeve using three screws on  
Screws  
(3 on each  
side of unit)  
Wall Sleeve  
each side of the chassis to ensure a proper seal between the  
chassis and the wall sleeve. The screws are supplied in a  
plastic bag attached to the power cord.  
IMPORTANT NOTES:  
1. The unit is equipped with a rubber grommet mounted com-  
pressor. These grommets are factory set and require no ad-  
justment.  
2. If a standard subbase is used, be sure the right hand subbase  
cover is removed before the chassis is installed in the sleeve.  
3. On 230V,30A units installed with an existing subbase, use the  
subbase cover extension kit.  
Chassis  
Outside  
Wall  
4. Check the indoor and outdoor grilles for obstructions to air  
flow. The unit must be located where curtains, furniture, trees,  
or other objects do not block the air flow to and from the unit.  
If air is obstructed and/or deflected back into the unit, the air  
conditioner compressor may cycle on and off rapidly. This  
could damage the compressor or possibly void the warranty.  
Chassis Installation View 2  
Wiring  
WARNING  
WARNING  
TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO  
ELECTRICAL SHOCK, DO NOT SERVICE THIS UNIT WITHOUT FIRST SHUTTING OFF  
POWER TO THE UNIT FROM THE CIRCUIT BREAKER AND/OR REMOVING  
THE UNIT CORD SET PLUG FROM THE WALL OUTLET.  
THIS AIR CONDITIONER IS NOT MEANT TO PROVIDE UNATTENDED COOLING OR  
LIFE SUPPORT FOR PERSONS OR ANIMALS WHO ARE UNABLE TO REACT TO  
THE FAILURE OF THIS PRODUCT.  
THE FAILURE OF AN UNATTENDED AIR CONDITIONER MAY RESULT IN EXTREME  
HEAT IN THE CONDITIONED SPACE CAUSING OVERHEATING OR DEATH OF  
PERSONS OR ANIMALS.  
CAUTION  
PRECAUTIONS MUST BE TAKEN TO WARN OFF OR GUARD AGAINST SUCH AN  
OCCURRENCE.  
TO AVOID PROPERTY DAMAGE, PERSONAL INURY OR DEATH DUE TO  
ELECTRICAL SHOCK, DO NOT USE AN EXTENSION CORD WITH THIS UNIT.  
PTAC WIRE HARNESS KIT (PWHK01C)  
See PTAC Wire Harness Kit Installation Instructions for  
proper wire orientation and location for low voltage wiring.  
CAUTION  
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL INURY OR FIRE,  
USE ONLY COPPER CONDUCTORS.  
HEATERLESS UNITS  
If a heaterless unit is ordered, field provisions must be made for  
adding supplemental heat. Refer to the Installation Instructions  
supplied with the heater kit for a complete description of the  
installation procedures. All 208/230 volt heaterless units are  
shipped with a 15 Amp power cord and all heaterless 265 volt  
units are shipped with a 20 Amp power cord.  
CAUTION  
TO AVOID THE RISK OF PERSONAL INURY, WIRING TO THE UNIT MUST BE  
PROPERLY POLARIZED AND GROUNDED.  
Cord connection to a wall socket is not permitted for 265-volt  
units. All 265-volt units must be hard wired using the hard wire  
kit or make use of the plug-in receptacle in the standard subbase.  
When adding a heater kit to a heatless unit, the power cord  
supplied with the heater kit must be used in place of the power  
cord supplied with the unit. Table 1 specifies power cord rating  
requirements for the various heater kits.  
230/208V and 115V units are equipped with LCDI or AFCI power  
cords and can open the electrical circuit to the unit. In the event  
the unit does not operate, check the reset button located on or  
near the head of the power cord as part of the normal trouble-  
shooting procedure.  
8
Wiring  
VOLTAGE MEASUREMENTS  
Power Cord Requirements  
230/208 Volt Units 265 Volt Units  
Once the unit is properly wired, measure the unit supply voltage.  
Voltage must fall within the voltage utilization range given in  
Table 2.  
Heater Size  
(kW)  
1.5  
Power Cord  
Power Cord  
Rating (amp)  
Rating (amp)  
15  
20  
2.5  
15  
20  
Operating Voltage  
3.5  
3.7  
5.0  
20  
Not Applicable  
30  
Not Applicable  
Unit Voltage  
Rating  
230/208  
265  
Voltage Utilization Range  
20  
30  
Minimum  
197  
Maximum  
253  
238  
292  
Table 1 - Power Cord Requirements  
115  
103.5  
126.5  
NOTE: Heaterless units are shipped with an auxiliary data label  
on the front side of the mid-partition panel. If an electric heater  
kit is field installed, the installer must mark the appropriate box on  
the label to indicate the electric heater capacity. If no heater is  
installed, the box labeled “None” must be marked. Refer to the  
unit nameplate for over current protection data.  
Table 2 - Operating Voltage  
Operating Instructions  
Fan Operation HIGH or LOW with HEAT or COOL mode selected  
- The selected fan speed shall run in the selected speed.  
USERS CONTROLS  
A six button touch key pad located behind the control door  
controls both temperature and operation mode. The key pads can  
be used alone or in combination.  
Fan Operation AUTO with HEAT or COOL mode selected - The  
fan will run in low and high speed. The changes in fan speed are  
automatic.  
THERMOSTAT SETTING  
DIAGNOSTIC LIGHT  
Pressing the COOL thermostat control and the up or down arrows  
will provide a cooler room temperature, respectively. Pressing  
the HEAT thermostat control and the up or down arrow keys will  
provide a warmer room temperature.  
The green diagnostic light located in the lower left hand corner of  
the touchpad and indicates operation warnings. This light usually  
indicates that either the filter or coils need cleaning. Please refer  
to the Maintenance and Cleaning section for the proper cleaning  
procedure. If this light is still on after cleaning, please refer to the  
Diagnostic & Status Report section for assistance.  
LCDI OR AFCI POWER CORD  
230/208V and 115V units are equipped with LCDI or AFCI power  
cords and can open the electrical circuit to the unit. In the event  
the unit does not operate, check the reset button located on or  
near the head of the power cord as part of the normal trouble-  
shooting procedure.  
FAN SPEED  
The fan speed touch key will deliver high, low or auto fan speed  
to circulate room air. NOTE: The AUTO selection will not be  
available if a fan speed is selected without COOL or Heat  
selection.  
Status LED  
User Controls  
9
Operating Instructions  
SW2  
AUXILIARY  
REMOTE THERMOSTAT  
GL W2 Y/W1  
P10  
P11  
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+  
C
R
B
GH  
P13  
P12  
M1  
M2  
COM A  
COM B  
ON/ OFF  
MASTER SWITCH  
IAT  
BLACK  
Control Board User Inputs*  
*NOTE: The PTAC Wire Harness Kit (PWHK01C) is required for the auxiliary or remote thermostat options.  
installation of a front desk switch. The following figure shows a  
wiring schematic for connecting the front desk switch to the unit.  
ADDITIONAL CONTROL INPUTS  
The control inputs shown above provide additional unit control  
and features. To access these control inputs, the cabinet front  
must be removed (see Front Removal).  
If the unit is configured for wired unrented setback energy  
management (see Configuration Settings section c2), EH and IN  
terminals are used instead of FD1 and FD2. If EH and IN are  
shorted, the unit will go into setback temperatures for cooling and  
heating as configured in c3 and c4 (see Configuration Settings).  
Unit operation will be disabled. “Fd” (see Diagnostic Codes) will  
appear on the display. This allows the room to quickly recover to  
a comfortable temperature when the room is occupied.  
MASTER SWITCH  
The master switch disconnects power to all of the system  
components. When this switch is in the off position, the compres-  
sor, fan motor, reversing valve, and electric resistance heater will  
all be de-energized.  
Maximum Wire  
Length  
Wire Size Maximum Length  
WARNING  
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO  
ELECTRIC SHOCK, UNPLUG THE UNIT AT THE WALL OUTLET OR TURN OFF  
POWER AT THE FUSE BOX OR CIRCUIT BREAKER BEFORE SERVICING THE  
UNIT. LINE VOLTAGE WILL BE PRESENT AT THE CONTROL BOARD, TERMINALS  
1 AND 2, WHENEVER POWER IS APPLIED TO THE UNIT REGARDLESS OF  
(AWG)  
#24  
Allowed  
400 ft  
#22  
600 ft  
#20  
900 ft  
L
L
#18  
#16  
1500 ft  
2000 ft  
THE MASTER SWITCH POSITION.  
Table 3 - Maximum Wire Length for  
Front Desk Switch  
REMOTE CONTROL INPUTS  
The C, R, GL, W2, Y/W1, B/O, and GH terminals provide control  
inputs for a “manufacturer-approved” remote wall mounted  
thermostat. The “B” terminal can be configured to become “O” if  
needed see Configuration Settings For remote control thermostat  
operation, refer to the Remote Thermostat Operation section.  
AUXILIARY  
REMOTE THERMOSTAT  
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+  
C
R
GL W2 Y/W1  
B
GH  
M2  
IAT  
BLACK  
FRONT DESK CONTROL (FD1, FD2, EH, IN)  
The FD1, FD2, EH and IN terminals provide control inputs for a  
front desk switch. Shorting across the FD1 and FD2 terminals  
will disable unit operation. The only control function which will  
remain active when these terminals are shorted is freeze protec-  
tion. Any switch which will produce a short circuit across these  
two terminals can be used as a front desk switch. The contact  
resistance of the switch, when closed, must be less than 200  
ohms for the front desk feature to operate properly. Table 3  
shows the maximum wire length and corresponding gage size for  
FRONT  
DESK  
SWITCH  
Front Desk Switch Wiring Schematic  
10  
Operating Instructions  
Vent  
Vent  
Open  
Closed  
No holes are permitted  
in chassis basepan or  
wallsleeve when routing  
low voltage wire. Route the  
low voltage wires through  
the indention on the front  
of the basepan.  
Vent Door Lever Positions  
Hydronic Heat Installations  
To avoid the risk of freezing the steam or water coil during  
prolonged shut down periods, the vent door must be left closed  
when the outdoor temperature might fall below freezing.  
Low Voltage Wires Routing  
VENT CONTROL  
AIR DISCHARGE GRILLE  
The vent control allows outside air to be drawn into the condi-  
tioned area. This outside air can provide ventilation when the  
blower is operating, but it will increase the heating or cooling load  
and operating costs.  
The discharge grille can be adjusted to expel air at either a 15° or  
40° angle.  
To obtain access to the vent control:  
1. Remove the cabinet front (see Front Removal).  
2. Remove the shipping screw (if installed) from the vent door.  
15° Discharge  
Angle  
40° Discharge  
Angle  
3. Remove the label (if present) from over the vent control lever  
on the left side of the chassis. Remove the vent door ship-  
ping screw.  
Discharge Grille Orientation Options  
Label  
Use the following procedure to change the angle of the discharge  
air flow:  
Vent  
Control  
Lever  
1. Remove the front cabinet (see Front Removal).  
2. Position the front so that the backside is accessible (see fig-  
ure below).  
Vent Control  
Vent Door Shipping Screw  
Vent Control Lever  
4. Rotate the vent control lever to either open or close the  
damper.  
Discharge Air Flow  
11  
Operating Instructions  
3. Remove the four (4) nuts which secure the discharge air grille  
to the cabinet front.  
• Concealed pipes and chimneys  
• Unheated (uncooled) areas behind the thermostat, such as  
an outside walls  
Consult the instruction sheet packaged with the thermostat for  
further details on mounting and operation.  
REMOTE THERMOSTAT OPERATION  
Approved thermostats vary slightly in construction and, with few  
exceptions, are operated similarly. The following operational  
description pertains to approved nonprogrammable thermostats  
that energize G in Heat and Cool mode.  
Discharge Air Flow Grille Removal  
HEAT/OFF/COOL Switch  
4. Rotate the grille 180° clockwise.  
• OFF - cooling and heating functions are defeated.  
5. Reinstall the nuts securing the discharge air grille to the cabi-  
net front. Reinstall the cabinet front on the unit.  
• HEAT - the selected room temperature is maintained by cy-  
cling either in the heat pump mode or electric strip heat. A  
PTH unit is switched from the heat pump mode to electric  
strip heat when the coil temperature is 20°F or when the  
heat pump cannot keep up with the heating load and a two  
stage thermostat is used.  
REMOTE THERMOSTAT  
To operate this unit with a “manufacturer-approved” remote  
thermostat, configure the control to be operated by the remote  
thermostat. Enter configuration mode C1 and then select option  
Code L5 (see Configuration Settings in back of manual). When  
in the remote mode, the unit will only respond to the thermostat  
inputs (terminal strip positions GL (or GH), W2, Y/W1, and B*  
shown in “Control Board User Inputs” illustration). NOTE: Once  
configuration C1 with option code L5 has been selected, the  
control touchpad will no longer accept inputs other than configu-  
ration and diagnostics modes. The room occupant must operate  
the unit at the remote mounted thermostat.  
• COOL - the selected room temperature is maintained by  
cycling the air conditioner.  
Table 4 summarizes the thermostat input combinations and the  
respective unit functions. The following wiring schematic illustra-  
tions show wiring schematics for heat pump and straight cool  
units with electric resistance heat, respectively.  
Heat Pump  
Thermostat  
Input  
Electric Heat  
Thermostat  
Input  
Unit Function  
R Terminal to:  
R Terminal to:  
OFF  
NONE  
NONE  
Stage 1 GL*, Y/W1, B**, O GL* Y/W1, B**, or GL*, W2, O  
NOTE: In remote mode, the 3-minute compressor time delay, the  
random restart feature and the freeze protection feature are all active  
(see Unit Features section).  
HEAT  
COOL  
Stage 2  
GL*, W2  
n/a  
GL*, Y/W1, B**, O  
GL*, Y/W1  
THERMOSTAT LOCATION  
*or GH depending on speed required  
**If configured, B and O can be used interchangeably.  
This unit is designed to be operated with remote wall mounted  
thermostats. For further information on thermostats approved for  
use with this unit, contact your sales representative.  
Table 4 - Remote Control Inputs  
NOTE: The PTAC Wire Harness Kit (PWHK01C) is required for  
For best performance results, the thermostat should be located  
approximately five feet above the floor on a vibration free, inside  
wall in an area with good air circulation.  
remote thermostat options.  
ADDITIONAL NOTES:  
1. For heat pump operation, a room thermostat with a B** (heat-  
ing changeover) terminal is required. This will mean that some  
“auto changeover” thermostats cannot be used, as many of  
them either do not have a B** terminal, or else energize the  
B** terminal continuously when in the “auto” position.  
Do not install the thermostat where it may be affected by the  
following:  
• Dead spots behind doors, in corners or under cabinets  
• Hot or cold drafts from air ducts  
2. Additional wiring should be run for future changeover to Heat  
Pump or thermostat options.  
• Radiant heat from the sun, appliances, or fireplaces  
**If configured, B and O input terminals can be used interchangeably.  
12  
Operating Instructions  
3. Run 6 to 8 wires during initial installation. Tape or cap off any  
unused wires.  
AUXILIARY  
REMOTE THERMOSTAT  
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+  
C
R
GL W2 Y/W1  
B
GH  
Control Board  
Connections  
Thermostat  
Connections  
Wiring Schematic for Straight Cool Unit  
*NOTE: For high speed fan operation, connect “G” to “GH”.  
AUXILIARY  
REMOTE THERMOSTAT  
DS1 DS2 MS1 MS2 EH IN LS FD1 FD2 TF- TF+  
C
R
GL W2 Y/W1  
B
GH  
Control Board  
Connections  
Thermostat  
Connections  
Wiring Schematic for Remote Heat Pump  
*NOTE: For high speed fan operation, connect “G” to “GH”.  
Table 5 shows the maximum wire length and corresponding gage  
size for installation of a remote thermostat.  
Maximum Wire  
Length  
Wire Size Maximum Length  
(AWG)  
#24  
Allowed  
400 ft  
#22  
600 ft  
#20  
900 ft  
#18  
#16  
1500 ft  
2000 ft  
Table 5 - Maximum Wire Length for Remote  
Control Connection  
WARNING  
TO PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO  
ELECTRIC SHOCK, DISCONNECT THE ELECTRICAL POWER SUPPLY BEFORE  
CLEANING THIS UNIT.  
**If configured, B and O input terminals can be used interchangeably.  
13  
Maintenance and Cleaning  
WARNING  
TO AVOID THE RISK OF PROPERTY DAMAGE, ELECTRICAL SHOCK OR  
PERSONAL INJURY, CLEAN AIR FILTERS AND COILS REGULARLY. CLOGGED  
OR SEVERLY RESTRICTED FILTERS OR COILS REDUCE AIRFLOW WHICH CAN  
CAUSE DRASTIC EFFICIENCY LOSS AS WELL AS SEVERE COMPONENT DAMAGE  
TO COMPRESSORS, ELECTRIC HEATER OR FAN MOTOR. IN EXTREME CASES,  
CLOGGED FILTERS AND/OR COILS MAY CREATE A FIRE HAZARD AND WILL  
VOID THE WARRANTY.  
`
WARNING  
SOME LOCAL CONDITIONS AND ENVIRONMENTS CAN CAUSE FUNGI AND OTHER  
MATERIAL TO GROW INSIDE THE PTAC UNIT. THIS MATERIAL WHEN DRIED,  
AS WELL AS OTHER FOREIGN MATERIAL, SIMILAR TO DRYER LINT IN YOUR  
CLOTHES DRYER, ARE FIRE HAZARDS. BE SURE TO THOROUGHLY CHECK AND  
CLEAN THE UNIT'S COILS, BLOWER WHEEL AND BASEPAN PER THE  
INSTRUCTIONS CONTAINED IN THIS MANUAL.  
MONTHLY MAINTENANCE AND CLEANING  
Intake Filter Removal  
Intake Air Filter  
To properly maintain the operational performance of your PTAC  
Vent Screen  
unit, it is extremely important that the inlet air filter be cleaned  
once per month or more often if operated in dusty or dirty  
locations or conditions. The intake air filter is constructed of  
durable polypropylene. The “air intake” air filter can be easily  
inserted into the cabinet front using the cabinet filter guides. The  
intake air grille swings out for easy access to the filter. Before  
cleaning the intake filter, turn the unit off by setting the mode  
switch to the OFF position. Filter should be cleaned as required.  
Before cleaning the vent screen, disconnect power to the unit by  
unplugging the power cord at the wall outlet or subbase, or  
disconnect power at the fuse box or circuit breaker. If unit is  
operated with vent door closed, the vent screen does not need  
to be cleaned.  
1. Remove the cabinet front as described in Front Removal.  
2. Remove the six screws securing the chassis to the wall  
sleeve.  
The following procedure is used to remove the intake filter:  
1. Open the intake grille by grasping the top intake louver.  
2. Pull the intake grille open.  
3. Slide the chassis out of the wall sleeve far enough so that the  
vent screen is accessible.  
3. Slide filter upward and remove.  
4. Remove the three screws securing the vent mesh screen to  
the partition panel.  
4. Clean filter with vacuum or with running water.  
Reverse this procedure to reinstall the filter.  
5. Clean and replace the vent screen, slide the chassis back into  
the wall sleeve, secure it in place with six screws and reinstall  
the front cabinet.  
NOTE: Available accessory filter kits are FK10B (air intake filter -  
10 per pack) and CFK10B  
(charcoal filter - 10 per pack). The charcoal filters will greatly  
improve the quality of the air by absorbing odors from tobacco  
smoke, mold, mildew, etc. Both filters are permanent and  
cleanable. Contact your sales person for details.  
Vent - (Left Side Unit)  
14  
Maintenance and Cleaning  
Cabinet Front  
Basepan and Condenser Coil  
The cabinet front and discharge air grille can be cleaned with a  
water dampened cloth . Under no circumstances should hydro-  
carbon-based cleaners (e.g. acetone, benzene, naphtha gaso-  
line, etc.) be used to clean the front or air grilles. Use care when  
cleaning the control area.  
CAUTION  
DO NOT USE COMMERCIAL GRADE COIL CLEANERS. SOME OF THESE  
CLEANERS MAY CONTAIN ETHYLENE DIAMINE TETRACETIC ACID (EDTA)  
WHICH CAN SHORTEN THE LIFE OF THE CONDENSER COIL.  
Before cleaning the basepan and condenser coil, turn OFF unit  
mode switch and disconnect power to the unit. To disconnect  
power, either unplug the power cord at the wall outlet or subbase,  
or disconnect power at the fuse box or circuit breaker.  
YEARLY MAINTENANCE AND CLEANING  
NOTE: Use a mild biodegradable detergent such as Simple  
Greenwhen cleaning the unit. Special care must be taken to  
protect the unit’s control board and other electrical components  
from getting any water on them while cleaning. The use of harsh  
or caustic cleaning agents or materials such as bleach or coil  
cleaners that are not designed for PTAC products will cause  
damage or deterioration of the aluminum fin or coil material and  
is not recommended. Care must be taken not to bend the  
aluminum fin stock.  
1. Create a water-tight seal by tightly covering the entire control  
panel area and fan motor with plastic. Creating this seal pre-  
vents water from entering the control area or the fan motor  
and damaging the unit.  
2. Spray condenser coil and basepan down with water. Next  
spray a mild biodegradable detergent such as Simple  
Greenonto the condenser coil and basepan. Let set for  
five (5) minutes.  
3. Rinse condenser coil and basepan with water again. NOTE:  
Ensure water pressure is no higher than that of an ordinary  
garden hose and the water temperature no higher than 120°F.  
Routine Scheduled Maintenance  
To achieve continuing top performance and high efficiency,  
4. Tilt the non-compressor side of the unit up no higher than 45  
degrees and allow water to drain out the other side of the unit.  
establish a “once a year” cleaning/inspection schedule for the  
unit. Take the unit out of the sleeve and thoroughly clean and  
rinse. Be sure to include in the yearly cleaning the evaporator  
coils, and condenser coils, basepan, and drain passages.  
Scheduled maintenance can be accomplished by either local  
maintenance staff or by an authorized servicer. They must follow  
the instructions described in this manual.  
5. Remove excess water left in the basepan by wiping the  
basepan with a dry cloth.  
6. Remove the water-tight seal from the motor and control panel  
area.  
7. Reinstall unit back into wall sleeve.  
8. Allow unit to dry for 24 hours before reapplying power. When  
power is reapplied test unit for proper operation.  
9. Place a non-acidic algaecide in the basepan to inhibit bacteria  
growth. Ensure the algaecide is compatible with wet coil op-  
eration and is not corrosive to the coil.  
Adverse Operating Conditions Maintenance  
Units operating in dusty or corrosive locations; i.e. dusty con-  
struction site or sea coast, must be cleaned more often. A  
minimum of four (4) times a year will maintain proper operational  
conditions and protect unit components.  
CAUTION  
HIGH PRESSURE AND HIGH TEMPERATURE CLEANING IS NOT RECOMMENDED.  
DOING SO COULD DAMAGE THE ALUMINUM FIN STOCK AND ELECTRICAL  
COMPONENTS.  
Wall Sleeve  
Clean the wall sleeve while cleaning the unit. The caulking  
around the sleeve should be checked to make sure that any  
potential air and water openings around the sleeve are properly  
sealed. The wall sleeve’s level should also be rechecked.  
Proper leveling for most installations are a ¼ bubble tilt to the  
outside and level from right to left. Contact your sales person for  
detailed maintenance or cleaning instructions.  
Clearance Check  
Clearances around the unit should also be checked to make sure  
that the intake air and discharge air paths have not become  
blocked or restricted. A minimum of eight inches clearance is  
needed from unit to furniture , beds, or other objects for proper  
operation. Restricted discharge or intake air will reduce the unit’s  
operational performance. In severe airflow restrictions damage  
can occur to unit components such as the compressor, electric  
heater or fan motor.  
15  
Obtaining Service  
In the event this unit requires repair or servicing beyond what is covered in this manual, contact an authorized service organization.  
To obtain an authorized servicer, contact your sales representative or agency.  
Normal Operating Sounds and Conditions  
Water trickling sounds  
Water is picked up and distributed over the coil. This improves the efficiency and  
helps with water removal.  
Water dripping  
Water will collect in the base pan during high humidity days. This can cause  
overflow and drip from the outside of the unit.  
Air sounds  
The fan cycle switch sets the operational mode of the fan in the ON position. The  
fan will run continuously whenever power is applied in this mode. In the AUTO  
position, the fan will cycle on and off with the compressor or electric heater.  
Starting delay  
You may notice a few minutes delay in the starting if you try to restart the unit too soon  
after turning it off or if you adjust the thermostat right after the compressor has shut off.  
This is due to a built in delay to protect the compressor.  
16  
Configuration Settings  
The control can be configured to operate a wide range of options. The options listed below with the * are the factory default settings.  
If these are acceptable, then the unit does not require any additional configuration and is fully operable. To configure the unit, first  
select the configuration feature code setting and then an option code to change from the factory default setting.  
To enter configuration feature mode:  
1. Press and continue to hold the up and down  
arrow keys and quickly press the OFF  
key twice within a two (2) sec-  
ond time frame. The display will alternate between displaying the feature code C1 and the option code 0 (factory default set-  
ting). The lower right dot on the display will flash. To enter the other option codes for C1 (rE and L5) press either the up or down  
arrow key.  
To select a configuration feature code other than C1, press the HEAT  
scroll to a previously viewed configuration codes press the COOL  
key until the desired configuration comes up. To  
key.  
Once you have scrolled to the correct feature, then to select the option code for your desired configuration, press either the up or  
down key to scroll through the options of the selected feature code.  
To exit configuration mode:  
1. Press the OFF  
key. Configuration feature mode will also exit if no keys are pressed for a period of two (2) minutes.  
Below are the most common configuration settings. Additional codes are present and may be accessed within this menu. Contact the  
manufacturer for additional information.  
Feature  
Code  
Option  
Code  
Description  
Interface Usage  
Description  
C1  
0*  
rE  
Unit is onlycontrolled by the touchpad behind the door.  
Unit is both controlled by a wireless thermostat  
and/or the touchpad behind the door.  
Unit is controlled by a wired thermostat onlyvia  
on the low voltage terminals.  
L5  
C2  
Fan Operation  
Au*  
On  
The fan only runs with the call for heating or cooling.  
The fan runs continuously except in the OFF position.  
C4  
C5  
C6  
Room Indentification first two  
digits (00 to 99)  
Room Identification last two  
digits (00 to 99)  
00-99  
Set first two digits of room identification  
00-99  
Set last two digits of room identification  
"No Occupancy" detection devices  
Wired Door Switch and Motion Sensor present  
Enter "No Occupancy" routine 18 hours after last control  
selection  
Occupancy  
0*  
1
18  
C7  
Motion Sensor Type  
1
Normally Closed Device  
Normally Open Device  
0*  
C8  
C9  
C0  
Cooling Temperature Limiting  
Heating Temperature Limiting  
Select temperature between 60 and 72 for minimum  
cooling set point  
Select temperature between 74 and 90 for maximum  
heating set point  
60-72 (65*)  
74-90 (80*)  
Reverse Cycle "B" or "O"  
selection for thermostat  
8*  
0
Mating thermostat has a "B" terminal  
Mating thermostat has an "O" terminal  
Not used  
c1  
c2  
Wired Unrented Set Back  
0*  
A
Not Active  
Active  
c3  
c4  
Unrented Cooling Temperature  
Unrented Heating Temperature  
Twinned Unit  
60-90 (79*) Select temperature between 60 and 90 unrented cooling set point  
60-90 (63*) Select temperature between 60 and 90 unrented heating set point  
CA  
0*  
5
Not Twinned  
Twinned (Slave)  
Cb  
Dehumidification  
0*  
1
Not Active  
Active  
U
Active in No occupancy / Unrented State  
CC  
Cd  
Dehumidistat call for a drop in temperature  
English/Metric Temperature  
3-8  
F*  
C
3-8  
Fahrenheit Scale  
Celsius Scale  
CE  
Freeze Protection  
1*  
0
On  
Off  
* Indicates factory default.  
17  
Diagnostic Maintenance & Status Report  
The Diagnostic Maintenance & Status Report provides detailed information on PTAC control operation and operational status includ-  
ing present modes, failures, airflow restriction warnings, operating temperatures, and past failures. The lower right hand dot on the  
center display flashes in this mode. In some cases the green LED located in the lower left hand corner of the touchpad below the OFF  
key will also be lit. This Green LED “Status Light“ only illuminates if there is an status code that has been activated and should be  
reviewed. In most cases, this light indicates that the indoor room filter is dirty should be cleaned or replaced. NOTE: Dirty filters  
cause the unit to consume more energy than normally needed to condition a room. Once the filter has been cleaned or replaced, the  
LED should go out. If the LED is still illuminated after the filter has been cleaned, activate the Diagnostic and Status mode to view  
any active codes. The unit may need additional cleaning or maintenance of the evaporator or condenser coils. Please perform this  
step before calling a servicer. A servicer should be called only if cleaning the filter or coils does not clear the status code or  
the code indicates that servicer should be called.  
DIAGNOSTIC STATUS REPORT MODE.  
To enter Diagnostic Status Report mode, press and hold the up and down  
arrows and, while holding, quickly press the  
COOL key twice.  
ACTIVE FAILURES.  
If there are no active failures or lockouts, the display will show a double dash, “- -”. If there is a code listed, see the unit “Diag-  
nostic Codes” chart for a list of definitions.  
OPERATING TEMPERATURES.  
• If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed  
key.  
• If already in Diagnostic Status Report mode, press the Fan Speed  
key. The display will show the temperature of the de-  
sired set point, SP; the temperature at the wireless thermostat, rL; the indoor ambient temperature behind the filter, IA; the indoor  
coil temperature, IC; the indoor discharge air temperature, Id; the outdoor coil temperature, OC; the outdoor ambient tempera-  
ture, OA; and the spare probe temperature, IH. If any of the probes are not populated the display will show the corresponding  
failure code.  
PAST FAILURE LOG  
• If not in Diagnostic Status Report Mode, enter as instructed above and press the Fan Speed  
key twice.  
• If already in Diagnostic Status Report mode, press the Fan Speed  
key. While the display is showing operating tempera-  
tures, the last 10 failure codes active or past can be requested by pressing the Fan Speed  
played last entry first followed subsequently by each preceding code.  
key again. The codes are dis-  
Note that modes F1 and Fd are also displayed in the normal control operation (see “Diagnostic Codes” chart).  
To exit Diagnostic Status Report mode, press the OFF key.  
18  
Diagnostic Codes  
ERROR  
DISPLAY  
CODE  
STATUS  
SUGGESTED ACTION  
LIGHT  
Freeze Protection Engaged. The room temperature  
measured by the wireless remote thermostat or indoor  
ambient thermistor active sensor falls below 40°F.  
No Action required. This setting will disengage when  
the room temperature rises above 43°F.  
Y
N
FP  
M
O
D
E
S
Open front desk switch to allow occupant unit  
operation.  
Front Desk switch is closed. All outputs are switched off.  
Y
Y
N
N
Fd  
No action if a wired thermostat is being used.  
Otherwise, see Configuration Settings.  
Control is configured to respond to a wired thermostat  
On  
Indoor Ambient Thermistor reads outside the range -20°F to  
200°F & the wireless thermostat is not communicating to the  
unit control or  
Replace black Indoor Ambient Thermistor or  
Wireless Remote Thermostat.  
Y
Y
F1  
Indoor Ambient Thermistor (IAT) without a wireless remote  
thermostat reads outside the range -20°F to 200°F.  
F
A
I
L
U
R
E
S
Configuration Error  
N
Y
N
N
N
Y
Set C1 Configuration Code to 0 or L5.  
Replace black Indoor Ambient Thermistor.  
Replace Red Indoor Coil Thremistor .  
Set C1 Configuration Code to 0 or L5.  
F2  
F3  
F4  
Indoor Ambient Thermistor reads outside the range -20°F to  
200°F  
Indoor Coil Thermistor either above or below operating  
tolerances.  
Configuration Error  
N
N
N
N
Y
Y
Y
N
F5  
F6  
Fb  
br  
Indoor Discharge Thermistor either above or below operating  
tolerances.  
Replace Yellow Indoor  
Discharge Thermistor.  
Configuration Error  
Set C1 Configuration Code to 0 or L5.  
Brown Out Protection engaged. Power was lost or voltage is  
low.  
Check for incoming power at correct voltage.  
A
I
R
F
Discharge Air Too Hot.  
N
N
Y
Y
Clean Filter or Remove Air Blockage.  
Clean Filter or Evaporator Coil.  
L6  
L8  
Air Restriction in Heating.  
L
O
W
Air Restriction in Cooling.  
N
N
Y
Y
Clean Filter or Evaporator Coil.  
L9  
Clean Condensor Coils, Check Fan  
fault code. Code will reset after cleaning.  
Outdoor Coil Thermistor temperature high.  
LC  
W
A
R
N
I
N
G
S
Clean Indoor Coil / Filter.  
Clean Outdoor Coil.  
N
N
Y
Y
Check for Blocked Indoor Air.  
Check for Blocked Outdoor Air.  
C1  
C0  
19  
Design, specifications, performance data and materials subject to change without notice.  
1900 Wellworth Ave., Jackson, Michigan 49203 • Ph. 517-787-2100 • Fax 517-787-9341  
THE QUALITY LEADER IN CONDITIONING AIR  
12/06  

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