INSTALLATION INSTRUCTIONS | |
|
|
REFRIGERATION SYSTEM
A. COMPONENT MATCHES
Check to see that the proper system components are in place, especially the indoor coil.
This outdoor unit is designed for use only with indoor coils that utilize a TXV refrigerant metering device. If any other type of metering device is installed on the indoor coil, consult the indoor coil manufacturer to determine if a TXV conversion kit is available.
When installing a TXV on an indoor coil, follow the instructions provided with the new TXV.
A typical TXV installation is shown in Figure 3.
!CAUTION
PRODUCT DAMAGE HAZARD
Failure to follow this caution may result in product damage.
Indoor coil and outdoor unit must be listed as a certified combination (match) in the ARI Unitary Directory of Certified Products.
Indoor coil must have
Figure 3 | Typical TXV Installation |
|
|
INDOOR
COIL
EQUALIZER
TUBE
SENSING | SUCTION | |
TUBE | ||
BULB | ||
| ||
| LIQUID | |
| TUBE | |
TXV |
| |
SENSING BULB | STRAP | |
(EITHER SIDE) | ||
| ||
| SUCTION | |
| TUBE | |
8 O'CLOCK | 4 O'CLOCK |
B. REFRIGERANT LINE SETS
The refrigerant line set must be properly sized to assure maximum efficiency and proper oil circulation.
Refer to Product Specifications and Long Line Applications Guideline for line set sizing.
NOTE: If the line set actual length is to exceed 80 feet, or if there is more than 20 feet vertical separation between outdoor and indoor units, refer to the Long Line Application Guideline document for additional instructions.
NOTE: Line set actual length must not exceed 200 feet.
NOTE: A crankcase heater must be used when the refrigerant line length exceeds 80 feet.
If it is necessary to add refrigerant line in the field, use dehydrated or dry, sealed, deoxidized, copper refrigeration tubing. Do not use copper water pipe.
Do not remove rubber plugs or caps from copper tubing until connections are ready to be made.
Be extra careful when bending refrigeration tubing. Tubing can “kink” easily, and if this occurs, the entire length of tubing must be replaced.
!WARNING
PERSONAL INJURY HAZARD
Failure to follow this warning could result in per‐ sonal injury and/or death.
Relieve pressure and recover all refrigerant before servicing existing equipment, and before final unit disposal. Use all service ports and open all flow- control devices, including solenoid valves.
!CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution may result in improp‐ er product operation.
Do not leave system open to atmosphere any lon‐ ger than absolutely required for installation. Inter‐ nal system components - especially refrigerant oils - are extremely susceptible to moisture con‐ tamination. Keep ends of tubing sealed during installation until the last possible moment.
C. ROUTING AND SUSPENDING REFRIGERANT LINES
Run refrigerant lines as straight and direct as possible, avoiding unnecessary bends and turns. Always insulate the entire suction line. Both lines should be insulated when routed through an attic or when routed through an underground raceway.
When routing refrigerant lines through a foundation or wall, do not allow refrigerant lines to come in direct contact with the building structure. Make openings large enough so that lines can be wrapped with extra insulation. Fill all gaps with RTV caulk. This will prevent noise
506 01 5102 00 | 5 |