Section 1. Safety Important CAUTION - This document contains a wiring diagram CON TAINS REFRIGERANT! and service information. This is customer property and is to remain with this unit. Please return to service informa- Failure to follow proper procedures tion pack upon completion of work. personal illness or injury or can result in severe equipment damage. CAUTION This information possessing is intended adequate for backgrounds System use of by oil and pressure.
Section 2 . Unit Location Considerations 2.1 Unit Dimensions Unit Dimensions Models H x W x L(Inches) 24/36 24-15/16 x 29-1/8 x 29-1/8 48/60 32-7/8 x 29-1/8 x 29-1/8 W H The unit ’ s w eight values is on the carton box. When mounting the outdoor unit on a roof , be sure the roof will suppor t the unit’ s w eight . Proper ly selected isolation is recommended to pr event sound or vibration transmission to the building structur e. L 2.2 Refrigerant Piping Limits Maxi m um line length = 100 feet.
2.4 Location Restrictions Ensure the top discharge area is unrestricted for at least 60 inches above the unit. Avoid Install Near Bedroom s Clearance must be provided in front of the control box (access panels) and any other side requiring service. Min. 60” Unrestricted Do not locate close to bedrooms, operational sounds may be objectionable. Min. 20” to Shrubbery Min.
Section 5. Refrigerant Line Consideratio ns Valve Connection Sizes 5.1 Refrig erant Line and Ser vice Table 5.1 Line Sizes Service Valve Connection Sizes Suction Line Liquid Line Suction Line Connection Liquid Line Connection 24/36 3/4 3/8 3/4 3/8 48/60 7/8 3/ 8 7/ 8 3/8 Model 5.2 Required Refrigerant Line Length Determine required line length. Line Lengt h 5.
5.4 Reuse Existing Refrigerant Lines ! CAUTION If using existing refrigerant lines make certain that all joints are brazed, not soldered. For retrofit applications, where the existing refrigerant lines will be used, the following precautions should be taken: Ensure that the refrigerant lines are the correct size. Refer to Section 2.2 listed and Table 5.1. Ensure that the refrigerant lines are free of leaks, acid, and oil.
Feet Maximum Wall Isolator 8 Feet Maximum Side View Line Set Secure Suction Line using isolators every 8 ft. Secure Liquid Line directly to Suction Line using tape, wire, or other appropriate method every 8 ft. Isolation In Wall Spaces Wall Sealant Ductwork Insulation Suction Line Isolator Line Set Isolation Through Wall DO NOT hang line sets from ductwork Section 7. Refrigerant Line Brazing 7.1 Braze The Refrigerant Lines STEP 1 - Remove caps or plugs.
STEP 2 - Remove the pressure tap cap from both service valves. STEP 3 - Purge the refrigerant lines and indoor coil with dry nitrogen. This pipe must have a thimble STEP 4 - Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge. Field supplied and installed Braze the refrigerant lines to the service valves.
STEP 5 - Replace the pressure tap caps after the service valves have cooled. Section 8. Refrigerant Line Leak Check 8.1 Check For Leaks STEP 1 - Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen. 150 PSIG STEP 2 - Check for leaks by using a soapy solution or bubbles at each brazed location.
REQUIRED PARTS LIST Section 9. Evacuation 9.1 Evacuate the Refrigerant Lines and Indoor Coil Important: Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete. 0350 Mi c r o n s STEP 1- Evacuate until the micron gauge reads no higher than 350 microns, then close the valve to the vacuum pump. ON STEP 2- Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute. OFF 1 MIN.
Section 11. Electrical - Low Voltage 11.1 Low Voltage Maximum Wire Length Table 11.1 defines the maximum total length of low voltage wiring from the outdoor unit, to the indoor unit, and to the thermostat. Table 11.1 24 VOLTS Field provided bushing or strain relief is required at the low voltage wire entry point. WIRE SIZE MAX.WIRE LENGTH 18 AWG 150 Ft. 16 AWG 225 Ft. 14 AWG 300 Ft. 11.
W2 B C w1 w2 C Y B PURPLE BLUE C YELLOW R WHITE BLACK G RED THERMOSTAT GREEN G BLACK Y BLACK/WHITE R W OUTDOOR UNIT INDOOR UNIT Control Wiring for H/P Systems. Notes: 1. Be sure power supply agrees with equipment nameplate. 2. Power wiring and grounding of equipment must comply with local codes. 3. Low voltage wiring to be No. 18 AWG minimum conductor. 4. “-----”The electric auxiliary heat connection.
Section 12. Electrical - High Voltage 12.1 High Voltage Power Supply ! WARNING LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and trouble shooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. The high voltage power supply must agree with the equipment nameplate.
Section 13. Start Up 13.1 System Start Up STEP 1 - Ensure Sections 6, 7, 8, 9, 10, 11, and 12 have been completed. STEP 2 - Set System Thermostat to OFF. OFF DONE CANCEL STEP 3 - Turn on disconnect to apply power to the indoor and outdoor units. ON OFF STEP 4 - Wait five (5) minutes before moving to Step 5 if no crankcase heater accessory is used, Wait one (1) hour before starting the unit if compressor crankcase heater accessory is used and the Outdoor Ambient Temperature is below 70 ºF. 60 MIN.
Section 14. System Charge Adjustment charging: weigh-In Method weigh-In Method can be used for the Initial installation, or anytime a system charge is being replaced. 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. A B Model All models Factory Charge (The data on nameplate) C charge multiplier for interconnecting refrigerant tube length 0.