Carrier 40QNC - Manuals

7 point A or B as shown in Fig. 12 or Fig. 13. Drill the hole at aslope so that the outside end is 1/2 inch (13 mm) lower than inside end to ensure optimal drainage. Refer to Fig. 14. Side Or Bottom Piping Remove the knockout in the unit and drill a 2--1/2 inch (63.5 mm)hole where the pipe penetrate...

8 Mounting Unit on Wall The units can also be mounted on the wall using the accessory mounting kit. Complete Outdoor Refrigerant Piping Connec- tions Follow the following general guidelines: 1. Use refrigerant grade field – supplied tubing. Refer to Table 4 for the correct line sizes. 2. Do not use ...

9 38QRF Units 1. Assemble the connector tubes to the factory supplied filter drier by brazing the factory supplied flare connectors to theinlet and outlet for the filter drier (see Fig. 19) A09507 Fig. 19 -- 38QRF018--036 Connector Tube Assembly 2. Perform step 2 and 3 from the 38HDF section.3. Remo...

10 Control Wiring The control circuit is 24 volts AC (minimum 40VA) supplied fromthe indoor unit. 1. Make sure you have enough control wires to cover the dis- tance between the indoor and outdoor unit. 2. Route one end of the control wiring through the opening provided in the unit side panel and con...

16 Run Power Wiring for Indoor Unit Be sure field wiring complies with local building codes and NEC,and unit voltage is within limits shown in Table 11.Contact local power company for correction of improper line voltage. ! WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result i...

17 A W a ll H a nging B ra cket H ook H ole R eta iner C lip R eta iner C lip B UNIT SIZE DIMENSION A B 40QNC01824 13.4 10.6 40QNC030 12.2 12.2 40QNC036 12.2 12.2 40QNQ018 13.4 10.6 40QNQ024 13.4 10.6 40QNQ030 12.2 12.2 40QNQ036 12.2 12.2 A08365 Fig. 29 -- Wall Mounting Details 8. If the refrigerant...

19 Zone Manager If a Zone Manager is required, the following steps should beperformed at the same time the indoor control and power wiring are being connected: 1. Plug the communication board to the J8 as shown in Fig. 332. Connect one end of the wire harness supplied with the Zone Manager to the co...

20 START--UP Preliminary Checks 1. Check condensate drainage system; on the opposite side of the drain connection, insert a water bottle up into the fancoil unit and fill the drain pan. Water must flow steadily; if not, check the pipe slope or inspect for any pipe restrictions. 2. Make sure all wiri...

21 Triple Evacuation Method The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercuryvacuum and system does not contain any liquid water. Refer to Fig. 37 and proceed as follows: 1. Pump system down to 28 in. of mercury and allow pump to c...

22 SERVICE ! WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.Before installing, modifying, or servicing system, main electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch w...

23 TROUBLESHOOTING See Table 12 and Table 13 for troubleshooting information. 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 seconds. The fault code is deduced from the number of times the green LED flashes, blocking u...