Page 2 - CONTENTS
Manual 2100-420HPage 2 of 34 CONTENTS Getting Other Information and Publications For more information, contact these publishers: .......... 3 QT EC General Information QT EC Model Nomenclature .......................................... 4 Shipping Damage .................................................
Page 3 - GETTING OTHER INFORMATION AND PUBLICATIONS; Manual N
Manual 2100-420H Page 3 of 34 GETTING OTHER INFORMATION AND PUBLICATIONS These publications can help you install the airconditioner or heat pump. You can usually find these atyour local library or purchase them directly from thepublisher. Be sure to consult current edition of eachstandard. National ...
Page 4 - Series General Information; QT; MODEL NOMENCLATURE
Manual 2100-420HPage 4 of 34 TABLE 1 FACTORY BUILT-IN ELECTRIC HEAT TABLE s l e d o M A - 3 4 2 H Q A - 2 0 3 H Q B - 3 4 2 H Q B - 2 0 3 H Q C - 3 4 2 H Q C - 2 0 3 H Q A - 2 6 3 H Q A - 2 2 4 H Q A - 2 8 4 H Q A - 2 0 6 H Q B - 2 6 3 H Q B - 2 2 4 H Q B - 2 8 4 H Q B - 2 0 6 H Q C - 2 6 3 H Q C - ...
Page 5 - ELECTRICAL SPECIFICATIONS CONTINUED ON PAGE 6 TABLE 2A
Manual 2100-420H Page 5 of 34 ELECTRICAL SPECIFICATIONS CONTINUED ON PAGE 6 TABLE 2A 1 Maximum size of the time delay fuse or HACR type circuit breaker for protection of field wiring conductors. 2 Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes....
Page 7 - FIGURE 1
Manual 2100-420H Page 7 of 34 FIGURE 1 UNIT DIMENSIONS
Page 8 - FIGURE 3; WARNING; FIGURE 2; UNIT
Manual 2100-420HPage 8 of 34 SHIPPING DAMAGE Upon receipt of equipment, the carton should bechecked for external signs of shipping damage. Theskid must remain attached to the unit until the unit isready for installation. If damage is found, the receivingparty must contact the last carrier immediatel...
Page 9 - must be locked; GENERAL; FIGURE 4
Manual 2100-420H Page 9 of 34 HANDLING UNIT AFTER REMOVALFROM SKID The unit will have to be turned sideways and removedfrom the skid to fit through a 36" doorway. If the doorheight allows, the unit can be slid sideways through thedoor. If the unit can not be slid through the door, then the unitw...
Page 11 - DUCT WORK; The QT; series heat pump has provision to attach a; series heat pumps are designed for use with; FILTERS; FIGURE 7; FIGURE 8
Manual 2100-420H Page 11 of 34 DUCT WORK Any heat pump is more critical of proper operatingcharge and an adequate duct system than a straight airconditioning unit. All duct work must be properly sizedfor the design airflow requirement of the equipment.Air Conditioning Contractors of America (ACCA) i...
Page 12 - The
Manual 2100-420HPage 12 of 34 FRESH AIR INTAKE This unit is equipped with a fresh air damper assembly.The damper blade is locked in the closed position whenthe unit is shipped from the Factory. To allow thedamper to operate remove the two plastic locking pins,one on each end of the blade. This will ...
Page 13 - SERVICE LIGHT
Manual 2100-420H Page 13 of 34 SERVICE LIGHT The unit is equipped with a service light whichsignals the user that service is required. The lightis located in the upper control panel and is visibleonly when the hinged service/filter access door isopen. The Service Unit light indicates that the unit h...
Page 14 - INSTALLATION INSTRUCTIONS; MOUNTING THE UNIT; NOTE: If the exterior wall thickness is between 5; REMOVING LOCKING SCREWS FROM WHEELS
Manual 2100-420HPage 14 of 34 INSTALLATION INSTRUCTIONS MOUNTING THE UNIT When installing a QT EC unit near an interior wall on the left side, a minimum of 8 inches is required; 12 inches ispreferred. When installing a QT EC unit near an interior wall on the right side, a minimum of 18 inches is req...
Page 15 - The standard Climate Control; WIRING – MAIN POWER; MUST BE; WIRING – LOW VOLTAGE WIRING
Manual 2100-420H Page 15 of 34 The standard Climate Control Option X is a remote thermostat connection terminal block. See Figure 16 forwiring diagram. Compatible thermostats are listed inTable 4. The Climate Control Option A is an electronic, non- programmable manual or auto changeover thermostat.T...
Page 16 - LOW VOLTAGE CONNECTIONS; Both must be energized; output; il; It is important that the; CAUTION
Manual 2100-420HPage 16 of 34 LOW VOLTAGE CONNECTIONS These units use a grounded 24 volt AC low voltagecircuit. The “R” terminal is the hot terminal and the “C” terminal is grounded. “G” terminal or pins 6 and 1 of P2 are the fan inputs . Both must be energized for proper fan operation. This is done...
Page 17 - TABLE 4
Manual 2100-420H Page 17 of 34 MIS-1285 FIGURE 15 TABLE 4 WALL THERMOSTATS t a t s o m r e h T s e r u t a e F t n a n i m o d e r P 0 6 0 - 3 0 4 8 ) 5 4 4 - 0 2 1 1 ( t a e H e g a t s 3 ; l o o C e g a t s 3 c i n o r t c e l E e l b a m m a r g o r P - n o N / e l b a m m a r g o r P l a n o i t...
Page 19 - UNIT MOUNTED THERMOSTAT WIRING DIAGRAM
Manual 2100-420H Page 19 of 34 FIGURE 17 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM “A” THERMOSTAT OPTION NOTE: On option X or A the CS2000A1 (or other field provided means to control ventilation) must be usedif any of the motorized ventilation options areinstalled.
Page 21 - START UP; Solid State Electronic Heat Pump Control; IMPORTANT INSTALLER NOTE; verification of proper rotation must be made.
Manual 2100-420H Page 21 of 34 START UP DESCRIPTION OF STANDARDEQUIPMENT Solid State Electronic Heat Pump Control Provides efficient 30-minute defrost cycle. A thermistorsensor and speed up terminal for service along with a10- minute defrost override are standard on theelectronic heat pump control. ...
Page 23 - R ENERGY RECOVERY VENTILATOR; VENT OPTIONS
Manual 2100-420H Page 23 of 34 QT EC R ENERGY RECOVERY VENTILATOR (Option) Before starting, make sure that the power has beenturned off. The return air grille panel must be removed.The energy recovery ventilator (QERV) can be seenafter the panel has been removed. To gain access to themist eliminator...
Page 24 - FRESH AIR DAMPER REMOVAL
Manual 2100-420HPage 24 of 34 FIGURE 19 FRESH AIR DAMPER REMOVAL MOUNTINGSCREW
Page 25 - QERV REMOVAL
Manual 2100-420H Page 25 of 34 FIGURE 20 QERV REMOVAL MOUNTINGSCREWS FRONT FILL LOWER BLOWER ASSEMBLY POWER CONNECTOR POWER CONNECTORS
Page 26 - SEQUENCE OF OPERATION; Cooling; PRESSURE SERVICE PORTS
Manual 2100-420HPage 26 of 34 SEQUENCE OF OPERATION Cooling – Circuit R-Y makes the thermostat pull in the compressor contactor starting the compressor andoutdoor motor. The G (indoor motor) circuit isautomatically completed on any call for coolingoperation, or can be energized by manual fan switch ...
Page 27 - DEFROST CYCLE; may take up to 10 seconds with the
Manual 2100-420H Page 27 of 34 DEFROST CYCLE The defrost cycle is controlled by temperature and timeon the solid state heat pump control. When the outdoor temperature is in the lower 40°Ftemperature range or colder, the outdoor coiltemperature is 32°F or below. This coil temperature issensed by the ...
Page 28 - TROUBLESHOOTING; TABLE 5
Manual 2100-420HPage 28 of 34 TROUBLESHOOTING TABLE 5 TROUBLESHOOTING m o t p m y S s e s u a C e l b i s s o P r i a p e R / k c e h C o t w o H & t a h W ll i w r o s s e r p m o C g n it a e h ( t r a t s t o n ) g n il o o c r o C o t R m o r f V 4 2 r o f k c e h C l o r t n o c p m u p t a...
Page 29 - CHECKING TEMPERATURE SENSOR; A thorough understanding of the defrost
Manual 2100-420H Page 29 of 34 CHECKING TEMPERATURE SENSOR 1. Disconnect temperature sensor from board and from outdoor coil. 2. Use an ohmmeter and measure the resistance of the sensor. Also use ohmmeter to check for short oropen. 3. Check resistance reading to chart of resistance use sensor ambien...
Page 31 - TROUBLESHOOTING GE ECMTM MOTORS CONT’D.; Replacing ECM Control Module
Manual 2100-420H Page 31 of 34 TROUBLESHOOTING GE ECM™ MOTORS CONT’D. Replacing ECM Control Module To replace the control module for the GE variable-speed indoor blowermotor you need to take the following steps: 1. You MUST have the correct replacement module. The controls are factory programmed for...
Page 33 - COOLING PRESSURE
Manual 2100-420H Page 33 of 34 Low side pressure ± 2 psig High side pressure ± 5 psig Tables are based upon rated CFM (airflow) across the evaporator coil. If there is any doubt as to correctoperating charge being in the system, the charge should be removed, system evacuated and recharged toserial p...
Page 34 - HEATING PRESSURE
Manual 2100-420HPage 34 of 34 Refer to notes following Table 10 TABLE 11 HEATING PRESSURE (ALL TEMPERATURES IN DEGREES F) L E D O M N R U T E R R I A . P M E T E R U S S E R P L I O C R O O D T U O G N I R E T N E E R U T A R E P M E T R I A 0 5 0 1 5 1 0 2 5 2 0 3 5 3 0 4 5 4 0 5 5 5 0 6 3 4 2 H Q ...
