3
Outdoor units may be connected to indoor section using
accessory tubing package or field--supplied refrigerant grade
tubing of correct size and condition. For tubing requirements
beyond 80 ft/24.38 m, substantial capacity and performance
losses can occur. Following the recommendations in the Long
Line Guideline for Split--System Air Conditioners and Heat
Pumps will reduce these losses. Refer to Table 1 for accessory
requirements. Refer to Table 2 for field tubing diameters.
If refrigerant tubes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system.
Table 1—Accessory Usage
ACCESSORY
REQUIRED FOR LOW---AMBIENT
COOLING APPLICATIONS
(Below 55F / 12.8C)
REQUIRED FOR
LONG LINE APPLICATIONS*
(Over 80 ft. / 24.38 m)
REQUIRED FOR
SEA COAST APPLICATIONS
(Within 2 miles / 3.22 km)
Accumulator Standard Standard Standard
Compressor Start Assist
Capacitor and Relay
Ye s Ye s No
Crankcase Heater Ye s
Ye s
No
Evaporator Freeze Thermostat
Ye s
(for non---Evolution systems only)
No No
Isolation Relay
Ye s
(for non---Evolution systems only)
No No
Liquid Line Solenoid Valve No
See Long--- Line Application
Guideline
No
Motor Master Control or
Low Ambient Switch
Ye s
(for non---Evolution systems only)
No No
Support Feet Recommended No Recommended
* For tubi ng line sets between 80 and 200 ft. (24.38 a nd 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Residential Split--- System Longline Application Guideline.
Table 2—Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)
UNIT SIZE
LIQUID
VA P O R
(up to 80 ft/24.38 m)
Connection Diameter Tube Diameter Connection Diameter Rated Tube Dia meter
018, 024 3/8 3/8 5/8 5/8
030, 036 3/8 3/8 3/4 3/4
042, 048 3/8 3/8 7/8 7/8
060 3/8 3/8 7/8 1--1/8
Notes:
1. Tube diameters are for total equivalent lengths up to 80 ft. (24.38 m)
2. Do not apply capillary tube or fixed o rifice indoor coils to these units.
* For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal o r 20 ft. (6.10 m) vertical differential (250 ft./ 76.2 m)Total Equivalent Length),
refer to the Longline Guideline--- Air Conditioners and Heat Pumps using Puronr Refrigerant.
the environmentally sound refrigerant
REGISTERED
ISO 9001:2000
This product has been designed and manufactured to
meet Energy Star criteria for energy effici ency when
matched with appropriate coil components. However,
proper refrigerant charge and proper air flow are critical
to achieve rated capacity and efficiency. Installation of
this product should follow all manufacturing refrigerant
charging and air flow instructions. Failure to confirm
proper charge and air flow may reduce energy
efficiency and shorten equipment life.
Ready for use in a Hybrid Heatr Duel Fuel system.
264A / 265A
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