Carrier 40QA Installation, Start-Up And Service Instructions Manual Download Page 19 | Manualshive

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*Heat pump fan coil units only.

Fig. 25 — Typical System Wiring; Cooling-Only Systems or Condensing Unit with

Heat Pump Fan Coil Unit Systems

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Summary of Contents for 40QA

Page 1: ...ns should be performed by trained service personnel When working on air conditioning equipment observe precautions in lit erature and on tags and labels attached to unit Follow all safety codes Wear s...

Page 2: ...ure is below 55 F the accessory low ambient or win ter start kit will be required Systems using 38HDS units can operate down to 40 F outdoor air temperature as shipped from the factory If operation at...

Page 3: ...r ft 150 30 CONDENSATE DRAIN CONNECTION Pipe Thread MPT CONDENSATE DRAIN SIZE in 3 4 LEGEND TXV Thermostatic Expansion Valve Field reconfigured to 18 000 Btuh 11 2 tons See Before Installa tion sectio...

Page 4: ...ove ft 65 Maximum Lift Fan Coil Below ft 150 CONDENSATE DRAIN CONNECTION Pipe Thread MPT CONDENSATE DRAIN SIZE in 3 4 Field reconfigured to 18 000 Btuh 11 2 tons See Before Installation section on pag...

Page 5: ...369 on bottom When facing unit discharge UNIT 40QA WEIGHT lb A B E F G QAB QAE ft in mm ft in mm ft in mm ft in mm ft in mm 024 108 110 4 215 16 1294 3 10 1169 4 15 8 1260 1 95 8 549 036 117 119 4 10...

Page 6: ...t of the unit Wooden Structure Install hanging bolts on a square wooden piece placed over beams Newly Built Concrete Slab Install hanging bolts with in serts embedded bolts etc Metal Structure Install...

Page 7: ...cooler buried section during extended periods of unit shutdown causing refrigerant slugging and possible com pressor damage at start up To connect piping 1 Install insulation Insulate supply and retu...

Page 8: ...nstall factory supplied piston enclosed in a bag taped inside the out door unit into the AccuRater metering device located in the service valve on the outdoor unit Fig 14 IMPORTANT The factory supplie...

Page 9: ...ls Check outdoor unit name plate for required charge NOTES 1 All pistons are Chattleff 9B9 type 2 All cooling units have a full factory charge for the smallest possible system combination 3 Service va...

Page 10: ...ndensate pump may be ordered as a field installed accessory Table 6 Required Piston Size for AccuRaterT Metering Device Cooling Only Condensing Units With Heat Pump Fan Coil Units INDOOR UNIT 40QAE OU...

Page 11: ...nect to the fan coil unit Place wire through hole on the control box Fig 18 Connect wire to high voltage ter minal board TB1 and ground screw When routing the wire in the unit use care to keep the wir...

Page 12: ...rminal block Connect the wires Y1 to Y and C to C See Fig 20 HEAT PUMP SYSTEMS The following connections must be made to the 38QRC unit for it to operate as a system with the indoor unit Route 6 wires...

Page 13: ...ave been installed and that the discharge louvers are positioned correctly After Extended Shutdown If the system has been turned off for more than 12 hours turn on the indoor and outdoor unit disconne...

Page 14: ...r COOLING MODE OPERATION When the room ther mostat senses a demand for cooling the fan coil relay board is energized The indoor fan s will start in the selected speed if it is not already operating Th...

Page 15: ...o prevent possible reverse rotation of the compressor Should any of these devices trip after the compressor is energized the Cycle LOC protection device will lock out the outdoor unit turn it off to p...

Page 16: ...ins to flush out debris To Clean Condensate Drains Clean all drains and drain pans at the start of each cooling season Check the flow by pouring water into the drain TO CLEAN OR REPLACE DRAIN PAN 1 Pl...

Page 17: ...hermostat Outdoor unit outdoor coil restricted Remove obstruction Fan speed is set too low Adjust fan speed to high or auto using the Fan button on the thermostat System does not heat properly Air fil...

Page 18: ...S Pump Shutoff Switch RVS Reversing Valve Solenoid SC Start Capacitor SR Start Relay SSDR Safety Switch Delay Relay TB Terminal Block TDR Time Delay Relay TRAN Transformer Terminal Marked Terminal Unm...

Page 19: ...Heat pump fan coil units only Fig 25 Typical System Wiring Cooling Only Systems or Condensing Unit with Heat Pump Fan Coil Unit Systems 19...

Page 20: ...Fig 26 Typical System Wiring Heat Pump Systems 20...

Page 21: ......

Page 22: ...l programs include a video cassette and or slides and a companion booklet Use these for self teaching or to conduct full training sessions For a free Service Training Material Catalog STM call 1 800 9...

Page 23: ...GLE PHASE POWER HAS GROUND WIRE BEEN CONNECTED HAS THE CORRECT SIZE FUSE OR HACR BREAKER BEEN PROVIDED ARE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY IS THE DISCONNECT SWITCH INSTALLED IN SI...

Page 24: ...BEEN ON FOR 24 HOURS MEASURE AND RECORD THE AIR ENTERING OUTDOOR UNIT F AIR ENTERING INDOOR UNIT F DISCHARGE LINE TEMPERATURE F VAPOR LINE TEMPERATURE F MEASURE AND RECORD THE VAPOR LINE PRESSURE PSIG...

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