1.0 KEY TO SYMBOLS AND SAFETY INSTRUCTIONS
1.1 Key to Symbols
Warnings in this document are identified by a warning triangle (⚠️). Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken.
This symbol (?) indicates important information where there is no risk to people or property.
The following keywords are defined and can be used in this document:
- DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
- WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
- CAUTION indicates a hazardous situation which, if not avoided, could result in minor to moderate injury.
- NOTICE is used to address practices not related to personal injury.
1.2 Safety
Please read before proceeding.
CAUTION:
This document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
These instructions do not cover all variations in systems or provide for every possible contingency to be met in connection with the installation.
Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes, the matter should be referred to your installing dealer or local distributor.
CAUTION:
This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage.
WARNING: HAZARDOUS VOLTAGE
Failure to follow this warning could result in property damage, severe personal injury or death. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized.
WARNING: REFRIGERANT OIL
Any attempt to repair a central air conditioning product may result in property damage, severe personal injury, or death. These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant cylinders are painted a "Rose" color to indicate the type of refrigerant and may contain a "dip" tube to allow for charging of liquid refrigerant into the system. All R-410A systems with variable speed compressors use a PVE oil (FV50S or equivalent) that readily absorbs moisture from the atmosphere to limit this "hygroscopic" action. The system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement.
CAUTION: HOT SURFACE
May cause minor to severe burning. Failure to follow this Caution could result in property damage or personal injury.
CAUTION: CONTAINS REFRIGERANT
Failure to follow proper procedures can result in personal illness or injury or severe equipment damage. System contains oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening system.
This document contains a wiring diagram and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
CAUTION:
A manufactured (mobile) home installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or when this Standard is not applicable, the Standard for Manufactured Home Installations (Manufactured Home Sites, Communities and Set-Ups), ANSI/NCS A225.1, and/or MH Series Mobile Homes, CAN/CSA Z240.
CAUTION: GROUNDING REQUIRED
Failure to inspect or use proper service tools may result in equipment damage or personal injury. Reconnect all grounding devices. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
2.0 INSTALLATION
All phases of this installation must comply with NATIONAL, STATE, AND LOCAL CODES. The figure shown in this manual is for reference only and may be slightly different from the actual product.
2.1 Inspection
As soon as unit is received, it should be inspected and noted for possible shipping damage during transportation. It is shipper's responsibility to cover the cost of shipping damage. Manufacturer or distributor will not accept the claims from dealer for any transportation damage.
2.2 Limitations
Refer to Figures 2-6, 2-7, 2-8, 2-9 for unit physical data and to Tables 6-1 & 13-1 for electrical data. If components are to be added to a unit they must meet local codes; they are to be installed at the dealer's and/or the customer's expense. Size of unit for proposed installation should be based on heat loss / heat gain calculations made in accordance with industry recognized procedures identified by the Air Conditioning Contractors of America.
Model | Net Weight | Gross Weight |
---|---|---|
CCRT60-1INV | 561 lbs(255kg) | 596 lbs(271kg) |
CCRT36-1INV | 412 lbs(187kg) | 432 lbs(196kg) |
2.3 Pre-Installation
Before installation, carefully check the following:
- Unit should be installed in accordance with national and local safety codes, including but not limited to ANSI/NFPS No. 70 or Canadian Electrical Code Part 1, C22.1, local plumbing and wastewater codes and any other applicable codes.
- For rooftop installation, ensure the structure has enough strength to support the weight of the unit. Unit should be installed on a roof curb and leveled.
- For ground level installation, a level slab should be used.
- Condenser airflow should not be restricted.
- On applications where a roof curb is used, the unit must be positioned on the curb so the front of the unit is tight against the curb.
2.4 Rigging and Handling
Exercise care when moving the unit. Do not remove any packaging until the unit is near the place of installation. Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails. Spreader bars, whose length exceeds the largest dimension across the unit, MUST be used across the top of the unit.
CAUTION:
Before lifting, make sure the unit weight is distributed equally on the rigging cables so it will lift evenly.
CAUTION:
All panels must be secured in place when the unit is lifted. The condenser coils should be protected from rigging cable damage with plywood or other suitable material.
2.5 Location Restrictions
Ensure the top discharge area is unrestricted for at least 60 inches above the unit.
Do not locate the outdoor unit near bedrooms since normal operational sounds may be objectionable.
Position unit to allow adequate space for unobstructed airflow, wiring, refrigerant lines, and serviceability.
Allow a minimum of 12 inches clearance on one side of the access panel to a wall and a minimum of 24 inches on the adjacent side of the access panel.
Maintain a distance of 24 inches between units.
Position unit where water, snow, or ice from roof or overhang cannot fall directly on unit.
See Figures 2-3 and 2-4 for clearance details.
Cold climate considerations (heat pump only):
Precautions must be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur.
Units should be elevated 3-12 inches above the pad or rooftop, depending on local weather. This additional height will allow drainage of snow and ice melted during the defrost cycle prior to its refreezing. Ensure that drain holes in the unit base pan are not obstructed, preventing drainage of defrost water (See Figure 2-4).
If possible, avoid locations that are likely to accumulate snow drifts. If not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit.
Note: Make sure that the condensate drain side is not higher than the other side (See Figure 2-2).
2.6 Roof Curb
On applications where a roof curb is used, the unit must be positioned on the curb so the front of the unit is tight against the curb (See Figure 2-10 ROOF CURB DIMENSION).
For units applied with a roof curb, the minimum clearance may be reduced from 1 inch to 1/2 inch between combustible roof curb material and the supply air duct.
Insulation layer and supply/return air duct supports are typical for bottom duct applications. For location of horizontal duct applications (on the back of the unit), refer to unit dimension details.
Curb Type | B | C | D | E | F |
---|---|---|---|---|---|
LARGE CURB | 14-1/4 [362] | 15-1/4 [387] | 46-1/16 [1170] | 16 [406] | 42-3/16 [1070] |
SMALL CURB | 14 [356] | 14 [356] | 46-1/16 [1170] | 16 [406] | 30-5/8 [778] |
3.0 DUCTWORK
Ductwork should be sized and installed by the installing contractor in accordance with the Manual D from the Air Conditioning Contractors of America, and all national, state and local codes.
On ductwork exposed to outside air space, use at least 2 inches of insulation and a vapor barrier. Flexible joints may be used to reduce noise.
A closed return duct system shall be used. This shall not preclude the use of economizers or ventilation air intake. Flexible joints may be used in the supply and return ductwork to minimize the transmission of noise.
CAUTION:
When fastening ductwork to the side duct flanges on the unit, insert the screws through the duct flanges only. DO NOT insert the screws through the casing. Outdoor ductwork must be insulated and waterproofed.
NOTE: Be sure to note supply and return openings. Refer to Figure 2-7 for information concerning supply and return air duct openings.
After the unit is installed, there should be no open passages through the supporting structure that would permit flame or hot gases from a fire originating in the space below the supporting structure to travel to the space above that structure.
NOTE:
A unit with electric heaters with an inlet or outlet duct that penetrates the building structure supporting the unit shall be provided with a mounting base of noncombustible material so designed that, after the unit is installed, there will be no open passages through the supporting structure that would permit flame or hot gases from a fire originating in the space below the supporting structure to travel to the space above that structure. If the unit is intended to be installed on a supporting structure of combustible material, the base shall be so designed that the required clearance will be maintained between the supporting unit mounting base, and shall extend not less than 76 mm (3 in.) below the upper surface of the supporting structure, except that, in a unit designed for use only in a mobile home, the distance shall be not less than 19 mm (3/4 in.).
4.0 CONDENSATE DRAIN CONNECTION
Consult local codes for special requirements. To provide extra protection from water damage, install an additional drain pan, provided by the installer, under the entire unit with a separate drain line. Manufacturer will not be responsible for any damages due to the failure to follow these requirements.
4.1 Install Drain Pipe
- Use the provided female NPT threaded fitting for outside connection and make sure that drain holes are not blocked.
- Insulation may be needed for the drain line to prevent sweating.
- Use a sealing compound on male pipe threads. Install the condensate drain line (NPT) to spill into an open drain.
- Ensure a trap is included in the condensate drain line.
- Make sure that the outlet of the trap is at least 1 in. (25mm) lower than the drain pan condensate connection to prevent the pan from overflowing (see Figure 4-1).
- Unit must be slightly inclined toward the drain connection (See Figure 2-2).
5.0 FILTERS
Units are shipped without a filter or filter racks. It is the responsibility of the installer to secure a filter in the return air ductwork or install a filter/frame kit.
The filter must always be used and must be kept clean. Dirty filters may cause insufficient air delivery, decreasing unit efficiency and increasing operation costs and wear-and-tear on the unit and controls.
Filters should be checked monthly; this is especially important since this unit is used for both heating and cooling. Refer to Table 5-1 for recommended filter sizes.
Model | Number of Filters | Recommended Size (in.) |
---|---|---|
CCRT36-1INV | 1 | 16x14x1 |
CCRT60-1INV | 1 | 16x14x1 |
6.0 ELECTRICAL WIRING
Field wiring must comply with the National Electric Code (NEC) or Canadian Electrical Code (CEC) and any applicable local ordinance.
WARNING:
Disconnect all power to unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment. Hazardous voltage can cause severe personal injury or death.
6.1 Power Wiring
- Proper electrical power should be available at the unit. Voltage tolerance should not be over 10% from the rated voltage.
- If any wire must be replaced, the replacement wire must be the same type as shown on the nameplate, wiring diagram, and electrical data sheet.
- Install a branch circuit disconnect of adequate size to handle starting current, located within sight of, and readily accessible to the unit.
- ELECTRIC HEATER - If the Electric Heater is installed, the unit may be equipped with 30~60A circuit breakers or fuses. These breaker(s) protect the internal wiring in the event of a short circuit and serve as a disconnect. Circuit breakers installed within the unit do not provide over-current protection of the supply wiring and therefore may be sized larger than the branch circuit protection.
- Supply circuit power wiring must be 221°F minimum copper conductors only. See Electrical Data in this section for ampacity, wire size, and circuit protector requirements. Supply circuit protective devices may be either fuses or "HACR" type circuit breakers. 1-3/8" knockouts inside the cabinet are provided for connection of power wiring to the electric heater.
- Connection of power wiring is separated from the machine power wiring.
6.2 Grounding
WARNING:
The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.
- The unit must be electrically grounded in accordance with local codes or the national electric code.
- Grounding may be accomplished by attaching ground wire(s) to ground lug(s) provided in the unit wiring compartment.
6.3 Control Wiring
IMPORTANT: Class 2 low voltage control wiring SHOULD NOT be run in conduit with main power wiring and must be separated from power wiring, unless Class 1 wire of proper voltage rating is used.
- Low voltage control wiring should be 18 AWG color-coded. For lengths longer than 50 ft, 16 AWG wire should be used.
- 7/8" holes can be used for control wires going into the unit.
- Make sure, after installation, separation of control wiring and power wiring has been maintained. Thermostat should be mounted on an inside wall about 58" from the floor and will not be affected by unconditioned air, sun and/or heat exposure. Follow the instructions carefully because there are many wiring requirements. See Figures 6-1, 6-2, and Table 6-1.
Model | Size (Tons) | Volt | Compressors (each) | OD Fan Motors (each) | Supply Blower Motor | Unit Circuit | Heater Circuit (208/230V) | Heater Circuit (208/230V) | Heater Circuit (208/230V) | Heater Circuit (208/230V) | Heater Circuit (208/230V) | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RLA | LRA | FLA | FLA | MCA (Amps) | Max Fuse/Breaker Size(Amps) | kW | Stages | Amps | MCA (Amps) | Max Fuse/Breaker Size(Amps) | ||||||
CCRT60-1INV | 5.0 | 208/230-1-60 | 27A | 52A | 2.1A | 6.0A | 41.9 | 60 | ||||||||
CCRT36-1INV | 3.0 | 208/230-1-60 | 19A | 52A | 1.4A | 3.5A | 28.7 | 45 | ||||||||
EHK-05J | 3.8/5 | 1 | 18.1/20.8 | 23/26 | 25/30 | |||||||||||
EHK-08J | 5.6/7.5 | 1 | 27.1/31.3 | 34/40 | 35/40 | |||||||||||
EHK-10J | 7.5/10 | 1 | 36.1/41.7 | 46/53 | 50/60 | |||||||||||
EHK-15J | 11.3/15 | 2 | 54.2/62.5 | 68/79 | 70/80 | |||||||||||
EHK-20J | 15/20 | 2 | 72.2/83.3 | 91/105 | 100/110 |
1. Minimum Circuit Ampacity.
2. Maximum Over Current Protection per Standard UL 1995.
3. Fuse or HACR circuit breaker size installed at factory or field installed.
CAUTION:
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.
7.0 SYSTEM START UP
- Ensure Sections 1, 2, 3, 4, 5, and 6 have been completed.
- Set System Thermostat to OFF.
- Turn on disconnect to apply power to the indoor and outdoor units.
- Wait one (1) hour before starting the unit if the compressor crankcase heater is used and the outdoor ambient temperature is below 70°F.
- Set system thermostat to ON.
8.0 SYSTEM CHARGE ADJUSTMENT
8.1 Charging: Weigh-in Method
The weigh-in method is recommended for initial installation, or anytime a system charge is being replaced. The weigh-in method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the subcooling charging method.
Model | Refrigerant Charge (lb-oz) |
---|---|
60 (5 Ton) | 12-9 |
36 (3 Ton) | 7-8 |
8.2 Subcooling Charging and Refrigerant Adjustment in Cooling (Above 55°F Outdoor Temp.)
- Check the outdoor ambient temperatures.
- Stabilize the system. After starting the system in cooling mode, short press the "FORCE" button; a "FORCE" symbol should appear. The system may take 10 minutes to ramp up. Operate the system for a minimum of twenty (20) minutes.
- After the twenty (20) minute stabilization period operating at 60 Hertz, maintain continuous operation while adjusting refrigerant charge. After adjusting, operate the system for a minimum of five (5) minutes for the system to stabilize, otherwise repeat step 3.
- Check subcooling value on the liquid line (According to Table 9-2).
- Adjust refrigerant level to attain proper subcooling.
- Stabilize the system. Wait 5 minutes for the system condition to stabilize between adjustments.
When the subcooling matches the chart, the system is properly charged. Remove gauges. Replace service port caps to prevent leaks. Tighten finger tight plus an additional 1/6 turn.
Add refrigerant if the subcooling reading is lower than the designed value (Table 8-2). Recover refrigerant if the subcooling reading is higher than the designed value.
Record System Information for reference (Table 8-3). Record system pressures and temperatures after charging is complete.
Model | Design Subcooling |
---|---|
60/36 | 12°F ± 4°F |
9.0 SYSTEM OPERATION AND TROUBLESHOOTING
9.1 Control Logic Description
The variable speed system adopts the same 24VAC control as any conventional heat pump. The compressor's speed is controlled based on coil pressures monitored by a pressure transducer. To ensure stable and adequate capacity, the compressor speed will modulate relative to evaporator pressure during cooling operation and relative to condensing pressure during heating operation. The target pressure can automatically adjust based on compressor operation so optimal capacity can be achieved. Target pressure can manually be adjusted (SW4) to achieve improved dehumidification and capacity demands.
9.2 Sensors (Thermistors/Pressure Transducer)
- T3 = Outdoor Coil Temperature: High/Low temperature protection, Outdoor fan control (cooling mode), Defrost control (heating mode).
- T4 = Ambient Temperature: Operating condition permission, Defrosting condition permission, Outdoor fan control (heating mode).
- T5 = Compressor Discharge Temperature: High/Low temperature protection, Electronic Expansion Valve (EEV) (ODU/heating mode only).
- Th = Compressor Suction Temperature: Outside Electronic Expansion Valve control.
- T2 = Indoor Coil Temperature: Indoor Fan control.
- T3L = Outdoor Line Liquid Temperature: Calculate subcooling value on liquid line.
- Tf = IPM Radiator Temperature: Inverter High Temperature Protection.
- Pressure transducer: Operating speed control, Electronic Expansion Valve (EEV) control, High pressure protection (heating mode), Low pressure protection (cooling mode).
9.3 Defrost Description
The Demand Defrost Control (DDC) monitors the ODU coil temperature using thermistor (T3). A second thermistor (T4) monitors outdoor ambient temperature. Based on these parameters, as well as accumulative run time and high pressure, the DDC calculates proper initiation of defrost.
Any one of the three conditions is required to enter defrost:
- The calculated temperature difference between the outdoor temperature (T4) and the coil temperature (T3) is called Delta T. After Delta T is achieved and continues for 3 minutes:
- T4 ≥ 39°F, Delta T = 18°F
- T4 ≥ 30°F, Delta T = 16°F
- T4 ≥ 19°F, Delta T = 14°F
- When T4 < 19°F, T3 < 9°F, accumulative compressor run time ≥ 80 minutes.
- After "Minimum Run Time" (MRT) is achieved. MRT is based on outdoor ambient temperature (T4), for example:
- MRT is 4 hours when: T4 < 23°F
- MRT is 2 hours when: 23°F ≤ T4 < 42°F
- After the high pressure saturation temperature drops below 82°F for 20 minutes.
Defrost will terminate once outdoor coil temperature (T3) reaches 64°F for a period of 1 minute or defrost time has exceeded 8 minutes.
Defrost Termination Settings (SW5) offers different defrost termination options for enhanced defrost for different geographical and outdoor conditions. See Table 9-1.
Manual Defrost:
- System must have a call for heat and have been operating for a minimum of 8 minutes.
- Press "Force" button on inverter board for 6 seconds to begin forced defrost.
- Wait approximately 40 seconds for defrost to initiate.
- Once defrost initiates, the display will indicate "dF".
- Defrost will terminate automatically, after which the display will indicate running speed.
- If a second defrost is required, repeat steps 2-5 after 5 minutes.
9.4 Compressor Crankcase Heater Description
Refrigerant migration during the OFF cycle can result in noisy start-ups; therefore, a CrankCase Heater (CCH) is used to minimize refrigerant migration, thereby minimizing start-up noise and/or bearing "wash out". All CCHs must be installed on the lower half of the compressor shell. Its purpose is to warm the compressor during the OFF cycle, driving refrigerant from the compressor. At initial start-up or after extended shutdown periods, allow CCH to be energized for at least 12 hours prior to compressor operation by applying line voltage to the heat pump with the thermostat OFF.
- CCH operation energizes:
- First time line voltage is applied and compressor discharge temperature T5 < 54°F.
- In process of defrosting.
- Compressor stops running for 3 hours and outdoor ambient temperature T4 < 41°F or T5 < 54°F.
- CCH operation de-energizes:
- Compressor discharge temperature T5 ≥ 61°F.
9.5 Reversing Valve Operation
Reversing valve energizes during heat mode and de-energizes in cool mode.
During a heat call on first-time operation, the unit will run for 1 minute in cooling to build up pressure for the reversing valve to change.
9.6 Protection Functions
- Outdoor coil temperature protection (T3):
- If T3 > 142°F, compressor is de-energized.
- If T3 < 129°F, compressor is energized.
- Ambient temperature protection (T4):
- If 23°F ≤ T4 < 125°F, unit can operate in cooling.
- If -4°F ≤ T4 < 86°F, unit can operate in heating.
- If T4 < 6.8°F, heat pump will provide 24V control to the indoor unit, energizing electric heat (if installed).
- Discharge Temperature (DT) protection (T5):
- If DT > 230°F during cooling mode, the compressor will stop.
- If DT < 185°F during cooling mode, the compressor will restart.
- If DT > 230°F during heating mode, the compressor will stop.
- If DT < 185°F during heating mode, the compressor will restart.
- High Pressure (HP) protection (mechanical open/close pressure switch):
- High pressure switch opens at P > 580 PSIG, the compressor and outdoor fan will stop.
- High pressure switch closes at P < 435 PSIG, the compressor and outdoor fan will restart.
- Low Pressure (LP) protection:
- If Low Pressure < 43.5 PSI for 5 minutes during cooling mode, the compressor and outdoor fan will stop. The system will attempt to run again after 3 minutes.
- Module (inverter) protection (TF):
- If TF > 154°F, the compressor and outdoor fan will stop.
- If TF < 142°F, the compressor and outdoor fan will restart.
9.7 Parameter Point Check Table
To display system parameters, press the "Check" button to index through the series of parameters available. The first time you press the "Check" button, it will display the sequence, and after 1 second it will display the value of the parameter. If you press the "Check" button again, it will display the next sequence. After 20 seconds on the same parameter, the display will revert back to normal status.
Normal Status: Last two digits will display under the following conditions:
- Unit not operating (Standby Mode): "outdoor ambient temperature".
- Unit operating: displays "compressor operating frequency".
No. | Point check content | Example | Remark |
---|---|---|---|
0 | Outdoor unit capacity | RH5=Heat pump 5 ton | |
1 | Outdoor unit mode | 2 (cooling) | 0 standby, 1 unused, 2 cooling, 3 heating |
2 | Outdoor unit set compressor speed(Hz) | 66 Hz | |
3 | T3(outdoor coil temp.)°F | 108 °F | |
4 | T4 (outdoor ambient temp.) (°F ) | 95 °F | |
5 | T5 (compressor discharge temp.) (°F ) | 140 °F | |
6 | Th (compressor suction temp.) (°F ) | 55 °F | |
7 | T3L(liquid line temp.) °F | 99 °F | |
8 | Tf (module temp.) (°F ) | 120 °F | |
9 | Pe (evaporating pressure) (PSI) | 140 psi | |
10 | Pc (condensing pressure) (PSI) | 380 psi | |
11 | Tes target of the evaporating temp. (only use for cooling mode) (°F ) | 43 °F | |
12 | Te (evaporating temp.) (°F ) | 43 °F | |
13 | Tcs target of the condensing temp. (only use for heatling mode) (°F ) | 106 °F | |
14 | Tc (condensing temp.) (°F ) | 106 °F | |
15 | Target of the compressor discharge superheat (only use for heating mode) (°F ) | 36 °F | |
16 | Compressor discharge superheat (°F ) | 36 °F | |
17 | Opening of EEV | 200 p(0~480) | |
18 | Fan speed | 9 speed | |
19 | Compressor current (A) | 10 A | |
20 | Alternating voltage | 230 V | |
21 | Compressor input dc voltage | 380 V | |
22 | Continuous running time of the compressor | 35 min | |
23 | Last Fault Code | 00 | see table 9-4 |
24 | Software version | V1.0 | |
25 | Remark | -- | -- |
9.8 Control Board Overviews
Detailed diagrams of control boards and component connections are provided for 60k and 36k models, illustrating connections for outdoor and indoor fan motors, IPM modules, sensors (T3, T4, T5, Th, T3L, Tf), pressure transducer (PT), reversing valve (RV), crankcase heater (CCH), compressor (COMP), transformer (XFMR), and connections to the indoor main board and thermostat. DIP switch settings (SW4, SW5, SW6) for various functions like defrost, fan control, and operating modes are also detailed.
9.9 Error Code Troubleshooting
The manual provides a comprehensive list of error codes and their corresponding troubleshooting steps. Key error codes and their descriptions include:
- P1: High pressure switch (HPS) protection.
- P5: Condenser coil temperature (T3) protection in cooling.
- P3: Compressor over current protection.
- P0: High module radiator temperature (TF) protection.
- P2/H5: Low pressure (PT) Protection / System lockup.
- P4: High compressor discharge temperature (T5) protection.
- PH: Low discharge superheat protection.
- E4: Temperature sensor fault (T3, T4, T5, Tf, Th, T3L).
- F1: High pressure switch (HPS) fault.
- C3: Condenser coil sensor (T3) seated fault in cooling.
- E7: Compressor discharge sensor (T5) seated fault.
- E6: DC fan motor fault.
- E9: EEPROM fault.
- H0: Communication fault in main control chip.
- E5: High/low voltage protection.
- P6/L0-L9: IPM module protection.
- AtL: Ambient Temperature Limited.
Each error code section includes a diagnosis and handling procedure, often involving checking sensor connections, resistance values, component functionality (fan, compressor), refrigerant charge, and replacing faulty parts or control boards as necessary.
10.0 CARE AND MAINTENANCE
10.1 Cleaning Precautions
CAUTION:
Any maintenance and cleaning of the outdoor unit must be performed by qualified service personnel only. Any unit repairs must be performed by qualified service personnel only.
DANGER: BEFORE CLEANING AND MAINTENANCE
Always turn off your heat pump and disconnect its power supply before cleaning or maintenance.
CAUTION:
- Do not use chemicals or chemically treated cloths to clean the unit.
- Do not use benzene, paint thinner, polishing powder, or other solvents to clean the unit.
10.2 Changing Your Air Filter
CAUTION:
Before changing the filter or cleaning, turn off the unit and disconnect its power supply.
When removing the filter, do not touch metal parts in the unit. The sharp metal edges can cut you.
A clogged air conditioner can reduce the cooling efficiency of your unit and can also be bad for your health. Make sure to change the filter every 3 months.
10.3 Maintenance - Long Periods of Non-Use
If you plan not to use your air conditioner for an extended period of time, do the following:
- Change all filters.
- Turn on FAN function until the unit dries out completely.
10.4 Maintenance - Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:
- Check for damaged wires.
- Check for leaks.
- Verify all filters have been replaced and are new.
- Make sure nothing is blocking all air inlets and outlets.
11.0 PRODUCT FEATURES
11.1 Standard Features
- R-410A Chlorine-Free Refrigerant
- Load 25%-110%
- Intelligent Oil Return Technology
- Inverter Driven Rotary Compressor
- Crankcase Heater Standard
- Compressor Sound Blanket
- Multiple System Protection:
- High pressure switch and low pressure transducer
- Compressor liquid return protection
- Compressor high or low compression ratio protection
- Compressor high temperature protection
- High / low voltage protection and over current protection
- IPM and electronic control board high temperature protection
- AHRI certified; ETL listed
11.2 Cabinet Features
- Unique fan-blade design
- Baked-on powder paint finish
- Wind Load compliant per Florida Building Code - 2010
- Wire fan discharge grille
- Steel louver coil guard
- Can be connected with two-stage indoor unit
12.0 PRODUCT SPECIFICATIONS
Detailed specifications for the CCRT36-1INV (3 Ton) and CCRT60-1INV (5 Ton) models are provided, covering ARI Cooling and Heating Performance, dimensions, weight, compressor type, condenser and evaporator coil data, condenser fan data, and ECM-Airflow performance. Electrical data includes voltage, phase, Hz, minimum circuit ampacity, maximum overcurrent protection, and operating voltage ranges for cooling and heating.
Component | Model 36 (3 Ton) | Model 60 (5 Ton) |
---|---|---|
Nominal Tonnage | 3 | 5 |
ARI COOLING PERFORMANCE | ||
ARI net capacity (Btu) | 34800 | 57000 |
EER/EER2 | 12/10.6 | 12.5/11.2 |
SEER/SEER2 | 18.5/18 | 19/18 |
Nominal CFM | 1250 | 1800 |
System power (kW) | 2.9 | 4.5 |
Refrigerant type | R410a | R410a |
Refrigerant charge (lb-oz) | 7-8 | 12-9 |
ARI HEATING PERFORMANCE | ||
47°F Capacity rating (Btu) | 36000 | 57000 |
System power (kW) | 2.88 | 4.4 |
17°F Capacity rating (Btu) | 23000 | 44000 |
System power (kW) | 3.0 | 6.0 |
HSPF/HSPF2 (BTU/Watts-hr.) | 9.0/8.1 | 10.0/9 |
DIMENSIONS (Inches) Length | 50-11/16 | 51-9/16 |
DIMENSIONS (Inches) Width | 35-1/16 | 44-13/16 |
DIMENSIONS (Inches) Height | 46-13/16 | 51-7/16 |
OPERATING WT. (lbs) | 420 | 562 |
COMPRESSORS Type | Rotary | Rotary |
COMPRESSORS Quantity | 1 | 1 |
CONDENSER COIL DATA Face area (Sq. Ft) | 14.11 | 20.17 |
CONDENSER COIL DATA Rows | 3+2 | 3+3 |
CONDENSER COIL DATA Fins per inch | 17 | 17 |
CONDENSER COIL DATA Tube diameter(inch) | 9/32 interlaced | 9/32 interlaced |
CONDENSER COIL DATA Circuitry type | ||
EVAPORATOR COIL DATA Face area (Sq. Ft) | 3.96 | 6.1 |
EVAPORATOR COIL DATA Rows | 4 | 4 |
EVAPORATOR COIL DATA Fins per inch | 17 | 17 |
EVAPORATOR COIL DATA Tube diameter(inch) | 9/32 interlaced | 9/32 interlaced |
EVAPORATOR COIL DATA Refrigerant control | EEV | EEV |
CONDENSER FAN DATA Fan diameter (inch) | 23-5/8 | 26-3/8 |
CONDENSER FAN DATA Type | Prop | Prop |
CONDENSER FAN DATA Drive type | Direct | Direct |
CONDENSER FAN DATA No. speeds | 1 | 1 |
CONDENSER FAN DATA Number of motors | 1 | 1 |
CONDENSER FAN DATA Motor HP each | 1/4 | 1/4 |
CONDENSER FAN DATA RPM | 200~950 | 200~880 |
CONDENSER FAN DATA Nominal total CFM | 3000 | 4100 |
DIRECT DRIVE EVAP FAN DATA Quantity | 1 | 1 |
DIRECT DRIVE EVAP FAN DATA Fan Size (Inch) | 10x10 | 11x10-5/8 |
DIRECT DRIVE EVAP FAN DATA Type | Centrifugal | Centrifugal |
DIRECT DRIVE EVAP FAN DATA No. speeds | 5 | 5 |
DIRECT DRIVE EVAP FAN DATA Motor HP each | 1/2 | 1/2 |
Electrical Data Voltage-Phase-Hz | 208/230-1-60 | 208/230-1-60 |
Electrical Data Minimum Circuit Ampacity | 28.7 | 41.9 |
Electrical Data Max. Overcurrent Protection | 45 | 60 |
Electrical Data Min / Max Volts Operating Range | 173 / 269 | 173 / 269 |
Electrical Data Cooling | 23°F-125°F | 23°F-125°F |
Electrical Data Heating | -4°F-86°F | -4°F-86°F |
1. Tested and rated in accordance with AHRI Standard 210/240.
2. Wire size should be determined in accordance with National Electrical Codes; extensive wire runs will require larger wire sizes.
Always check the rating plate for electrical data on the unit being installed.
13.0 AHRI 210/240 PERFORMANCE DATA
The document includes detailed AHRI performance data tables for both cooling and heating modes for CCRT36-1INV and CCRT60-1INV models, specifying Total Capacity (TC), Sensible Heat Ratio (S/T), and Input Power (kW) across various indoor and outdoor temperature and airflow conditions.