This document is an installation manual for Carrier R22/R410A Floor and Ceiling air conditioners, specifically for models 42KUE036N, 42KUE048N, and 42KUE060N. It provides comprehensive instructions for the proper installation, wiring, and testing of these units, emphasizing safety precautions and technical specifications.
Function Description
The Carrier R22/R410A Floor and Ceiling air conditioners are designed to provide cooling and, for heating/cooling types, heating for various indoor spaces. These units are versatile, capable of being installed either on the floor or suspended from the ceiling, making them suitable for a range of commercial and residential applications. The manual details the steps for installing the indoor and outdoor units, connecting refrigerant pipes, drain pipes, and electrical wiring, and performing a test operation to ensure proper functionality. The system utilizes either R22 or R410A refrigerant, with a specific instruction to change the throttle piston if matching with an R22 CDU.
Important Technical Specifications
The manual provides a table of unit dimensions (Table 5-1) for different models:
- 18-24 (MODEL): A: 1068 mm, B: 675 mm, C: 235 mm, D: 983 mm, E: 220 mm
- 30-48 (MODEL): A: 1285 mm, B: 675 mm, C: 235 mm, D: 1200 mm, E: 220 mm
- 36-48 (MODEL): A: 1650 mm, B: 675 mm, C: 235 mm, D: 1565 mm, E: 220 mm
- 60 (MODEL): A: 1650 mm, B: 675 mm, C: 235 mm, D: 1565 mm, E: 220 mm
Power Specifications (Table 9-1):
All models (18, 24, 30-36, 42-48, 60) operate on a 1-Phase, 208-240V, 20/16 A circuit breaker/fuse.
Piping Specifications (Table 6-1):
- Pipe gauge Ø6.4: Tightening torque 15-16 N.m (153-163 kgf.cm), Flare dimension A min 8.3 mm, max 8.7 mm.
- Pipe gauge Ø9.5: Tightening torque 25-26 N.m (255-265 kgf.cm), Flare dimension A min 12.0 mm, max 12.4 mm.
- Pipe gauge Ø12.7: Tightening torque 35-36 N.m (357-367 kgf.cm), Flare dimension A min 15.4 mm, max 15.8 mm.
- Pipe gauge Ø15.9: Tightening torque 45-47 N.m (459-480 kgf.cm), Flare dimension A min 18.6 mm, max 19.0 mm.
- Pipe gauge Ø19.1: Tightening torque 65-67 N.m (663-684 kgf.cm), Flare dimension A min 22.9 mm, max 23.3 mm.
Stop Valve Tightening Torque (Table 6-2):
- Stop Valve size Ø6.4: 5-7 N.m (Hexagonal wrench 4 mm), Cap 13.5-16.5 N.m, Maintenance nut 11.5-13.9 N.m.
- Stop Valve size Ø9.5: 7-9 N.m (Hexagonal wrench 4 mm), Cap 18-22 N.m, Maintenance nut 11.5-13.9 N.m.
- Stop Valve size Ø12.7: 7-9 N.m (Hexagonal wrench 4 mm), Cap 18-22 N.m, Maintenance nut 11.5-13.9 N.m.
- Stop Valve size Ø15.9: 9-11 N.m (Hexagonal wrench 6 mm), Cap 23-27 N.m, Maintenance nut 11.5-13.9 N.m.
- Stop Valve size Ø19.1: 11-13 N.m (Hexagonal wrench 6 mm), Cap 35-40 N.m, Maintenance nut 11.5-13.9 N.m.
Usage Features
The air conditioner is designed for ease of installation and operation, with features including:
- Flexible Installation: Can be installed in various locations, provided there is enough room for maintenance, a level ceiling, and no obstructions to airflow.
- Remote Control: Comes with a remote controller and holder for convenient operation. The manual includes instructions for installing the remote controller frame in a location where its signal can reach the indoor unit smoothly.
- Refrigerant Compatibility: Supports both R22 and R410A refrigerants, with a specific instruction to replace the default R410A throttle piston with an R22 type if the unit is to be matched with an R22 CDU.
- Drainage System: Requires proper installation of drain piping with a downward declivity of at least 1/100 to ensure effective drainage and prevent condensation. The total length of the drain pipe when pulled out traversely should not exceed 20m, with prop stands for longer pipes.
- Safety Features: Emphasizes grounding the unit, using an earth leakage breaker, and ensuring proper electrical connections to prevent electric shocks, short circuits, and fires. A protection feature prevents the air conditioner from starting for approximately 3 minutes after shut-off.
- Anti-Interference Function: Wiring diagrams illustrate how to ground the air conditioner properly to affect its anti-interference function, minimizing image interference or noise with televisions and radios.
Maintenance Features
The manual highlights several aspects related to maintenance and proper handling:
- Qualified Personnel: Emphasizes that only trained and qualified service personnel should attempt to install, repair, or service the equipment to prevent electric shocks, short circuits, leaks, fire, or other damage.
- Installation Checks: After installation, a thorough check is required to ensure the unit operates properly, including checking for refrigerant leaks, unimpeded drainage, proper insulation, and correct wiring.
- Vacuum Pumping: Detailed instructions are provided for using a vacuum pump to evacuate the refrigeration system to 500 microns, ensuring no air or moisture remains, which is crucial for system efficiency and longevity.
- Refrigerant Charging: Guidelines for additional refrigerant charging, stressing the importance of using appropriate refrigerant, protective gear, and avoiding overcharging to prevent liquid hammer and explosions.
- Documentation: Users are advised to keep the installation manual and owner's manual for future reference and to instruct customers on how to operate and maintain the unit.
- Component Replacement: The manual lists attached fittings, including a remote controller, batteries, owner's manual, installation manual, remote controller manual, and an R22 Piston for refrigerant compatibility.
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