This document is a technical manual for TGM Air Conditioners, specifically for an R410A 208/230V 1Ph 60Hz 15 SEER Wall Mounted Air Handler Unit.
Function Description:
The TGM Air Conditioner is designed to provide cooling and heating (where applicable) for indoor spaces. It utilizes R410A refrigerant and operates on a 208/230V single-phase 60Hz power supply. The system includes an indoor air handler unit and an outdoor unit, working together to regulate indoor temperature and humidity. The wall-mounted air handler is designed for efficient air distribution within a room.
Important Technical Specifications:
The manual details specifications for both indoor and outdoor units across various models (18K, 24K, 30K, 36K BTU/hour).
- Model Names: CAH-F18CGR1-FQA-E3, CAH-F24CGR1-FQA-E3, CAH-F30CGR1-FQB-E3, CAH-F36CGR1-FQB-E3 (for 15 SEER Cooling Only). CTFRA15C018A, CTFRA15C024A, CTFRA15C030A, CTFRA15C036A (for 15 SEER Scroll Cooling Only).
- Dimensions (W×H×D):
- 18K/24K: 20-1/2×36-1/2×15 inches (520×927×381 mm)
- 30K/36K: 22×39-1/2×19 inches (559×1004×483 mm)
- Power Supply: 208/230V-1Ph-60Hz for all models.
- Cooling Capacity (BTU/h):
- 18K: 18000
- 24K: 23600
- 30K: 28000
- 36K: 34000
- SEER2: 11.7 for all models.
- EER2: 14.3 for all models.
- Power Input (W):
- 18K: 249
- 24K: 249
- 30K: 373
- 36K: 373
- Current (A): 2.4 for 18K/24K, 3.8 for 30K/36K.
- Static Pressure (Pa): 75 for all models.
- Indoor Air Flow (CFM):
- 18K: 620
- 24K: 710
- 30K: 1010
- 36K: 1080
- Indoor Noise Level (dB(A)):
- 18K: 48.5
- 24K: 49.5
- 30K: 52.5
- 36K: 53.5
- Electric Heater (Optional): 5/7.5kW for all models.
- Filter Size (mm):
- 18K/24K: 16×20 (406×508)
- 30K/36K: 20×20 (508×508)
- Electric Characteristics (Indoor Unit):
- 18K: 208/230V, 60Hz, 1/3 HP, 0.8 Circuit AMPS, 5 (A) Max circuit protector.
- 24K: 208/230V, 60Hz, 1/3 HP, 1.1 Circuit AMPS, 5 (A) Max circuit protector.
- 30K: 208/230V, 60Hz, 1/2 HP, 1.3 Circuit AMPS, 5 (A) Max circuit protector.
- 36K: 208/230V, 60Hz, 1/2 HP, 2.0 Circuit AMPS, 5 (A) Max circuit protector.
- Wire Gauge (Indoor Unit): Line quantity 3, Wire diameter (AWG) 16 for all models.
Outdoor Unit:
- Model Names: CTFRA15C018A, CTFRA15C024A, CTFRA15C030A, CTFRA15C036A.
- Outdoor Power Supply: 230V/1N/60Hz for all models.
- Cooling Capacity (BTU/h):
- 18K: 18000
- 24K: 23600
- 30K: 28000
- 36K: 34000
- SEER2: 11.7 for all models.
- EER2: 14.3 for all models.
- Input (DOE) W:
- 18K: 1580
- 24K: 1294
- 30K: 1521
- 36K: 1808
- Outdoor Fan Motor: DC type, DRN-310-200-10 model, 200W power output, 850rpm speed.
- Outdoor Air Flow (CFM):
- 18K: 1700
- 24K: 1900
- 30K: 1900
- 36K: 2800
- Outdoor Noise Level (dB(A)):
- 18K: 61
- 24K: 60
- 30K: 61.5
- 36K: 62
- Outdoor Dimensions (W×H×D):
- 18K/24K: 25×21-4/5×21-4/5 inches (554×633×554 mm)
- 30K/36K: 29-1/7×29-1/7×29-1/7 inches (740×633×740 mm)
- Refrigerant Pipe (Liquid side / Gas side): Φ3/8 / Φ3/4 for all models.
- Refrigerant Charge:
- 18K: 47/49 lbs
- 24K: 57/59 lbs
- 30K: 73/76 lbs
- 36K: 74/77 lbs
- Electric Characteristics (Outdoor Unit):
- 18K: 208/230V, 187V Min, 253V Max, 13 Amps, 20 Max Fuse.
- 24K: 208/230V, 187V Min, 253V Max, 13 Amps, 20 Max Fuse.
- 30K: 208/230V, 187V Min, 253V Max, 15 Amps, 25 Max Fuse.
- 36K: 208/230V, 187V Min, 253V Max, 15 Amps, 30 Max Fuse.
- Wire Gauge (Outdoor Unit): Line quantity 3, Wire diameter (AWG) 14 for 18K/24K, 12 for 30K/36K.
Usage Features:
- Operation Modes: Cooling mode (57-115°F), General heat pump mode (19-75°F), High vertical heat pump mode (32-75°F).
- User Interface: Dip switch settings on the indoor unit's PCB allow for configuration of fan speed (HIGH, MEDIUM, LOW) and heating delay.
- Installation: The manual provides detailed instructions for installation, including precautions, pipe connections, and clearances.
- Service Space: Requires at least 60 inches above the top of the unit, 24 inches from one side of the access panel to the wall, and 12 inches from shrubbery around other side panels.
- Pipe Connections: Specific suction and liquid line dimensions are provided for different models (e.g., 3/4" suction, 3/8" liquid for 18K/24K/30K/36K).
- Air Filter: Optional air filter for cleaning or renewal, designed to provide fresh and healthy air indoors. Filter sizes vary by model.
- Motor Control: ECM motors allow for multiple fan modes and flexible response to various environments. Powerful fan speed, combined with insulation material, ensures quiet operation.
- Refrigerant: Uses R410A environment-friendly refrigerant.
- Reliability: Features painted galvanized steel cabinet, well-known brand scroll compressor, reliable quality, condenser coils constructed with copper tubing and enhanced aluminum fins, 5-speed DC motors for optimized airflow, and intelligent defrost programs.
- Outdoor Unit Grille: Standard outdoor unit uses a plastic grille, but a louvered steel grille option is available for customization.
Maintenance Features:
- Troubleshooting: The manual includes comprehensive troubleshooting flowcharts for various fault conditions, including:
- T3 Condenser Temperature sensor error
- T4 Outdoor Ambient Temperature sensor error
- T5 Discharge Temperature sensor error
- Low Pressure alarm
- High Pressure alarm
- T3 high temperature protection
- T5 high temperature protection
- Fan motor feedback error
- Fault Indicators:
- Indoor Unit:
- Normal display: Green light flash 1 time every 3 seconds (Unit is standby), Green light ON (Unit is running normally).
- Indoor unit error: Green light flash 2 times for every 8s (T2 temp. sensor error), Green light flash 3 times for every 8s (Anti-cold air).
- Outdoor Unit:
- Normal display: Green light flash slow (Unit standby), Green light ON (Unit is running).
- Outdoor unit error: Yellow light flash 1 time for every 8s (T3 temp. sensor error), Yellow light flash 2 times for every 8s (T4 temp. sensor error), Yellow light flash 3 times for every 8s (T5 temp. sensor error), Yellow light flash 4 times for every 8s (Low pressure protection), Yellow light flash 5 times for every 8s (High pressure protection), Yellow light flash 6 times for every 8s (T3 high temperature protection), Yellow light flash 7 times for every 8s (T5 high temperature protection), Yellow light flash 8 times for every 8s (Fan motor feedback error).
- Outdoor unit error & locked: Yellow light flash 4 times for every 8s (Low pressure protection occurs 6 times within 60 mins), Yellow light flash 5 times for every 8s (Low pressure protection occurs 6 times within 60 mins), Yellow light flash 6 times for every 8s (T3 high temp. protection occurs 6 times within 60 mins), Yellow light flash 7 times for every 8s (T5 high temp. protection occurs 3 times within 20 mins).
- Refrigerant Leakage Inspection: Instructions for pressurizing the refrigerant line and evaporator coil to 150 PSIG using dry nitrogen and checking for leaks with soapy water or foam at soldering positions.
- Refrigerant Charging: Guidelines for calculating additional refrigerant charge based on the diameter and length of the liquid side pipe. The document specifies a charge factor of 0.6 oz/ft for refrigerant pipe length.
- Insulation Work: Detailed instructions for insulating connecting pipes, including material thickness (10mm for refrigerant pipe, 6mm for drainage pipe) and proper application to prevent condensation.
- Exploded Views and Part Lists: The manual provides exploded diagrams and corresponding part lists with BOM codes for both the wall-mounted AHU and the top discharge outdoor unit, facilitating identification and replacement of components.
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