3
Table 1 – Accessory Usage
Accessory
REQUIRED FOR LOW---AMBIENT
COOLING APPLICATIONS
(Below 55
°
F / 12.8
°
C)
REQUIRED FOR
LONG LINE APPLICATIONS*
REQUIRED FOR
SEA COAST APPLICATIONS
(Within 2 miles / 3.22 km)
Accumulator
Standard
Standard
Standard
Ball Bearing Fan Motor
Yes
{
No
No
Compressor Start Assist Capacitor and
Relay
Yes
Yes
No
Crankcase Heater
Yes
Yes
No
Evaporator Freeze Thermostat
Yes
No
No
Hard Shutoff TXV
Yes
Yes
Yes
Isolation Relay
Yes
No
No
Liquid Line Solenoid Valve
No
See Long---Line Application
Guideline
No
Motor Master
®
Control or
Low Ambient Switch
Yes
No
No
Support Feet
Recommended
No
Recommended
* For tubing line sets between 80 and 200 ft. (24.38 and 60.96 m) and/or 20 ft. (6.09 m) vertical differential, refer to Residential Piping and Longline Guideline.
{
Additional requirement for Low---Ambient Controller (full modulation feature) MotorMaster
r
Control.
Outdoor Unit Connected To Factory Approved Indoor
Unit
Outdoor unit contains correct system refrigerant charge for
operation with approved ARI rated indoor unit when connected by
15 ft (4.57 m) of field--supplied or factory--accessory tubing, and
factory supplied filter drier. Check refrigerant charge for maximum
efficiency.
Refrigerant Tubing and Sweat Connections
Connect vapor tube to fitting on outdoor unit vapor service valves
(see Table 2). Connect liquid tubing to adapter tube on liquid
service valve. Use refrigerant grade tubing.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Service valves must be wrapped in a heat--sinking material
such as a wet cloth while brazing.
Remove plastic retainer holding outdoor piston in liquid service
valve, leaving the piston and piston retainer inside the valve.
Connect sweat/flare adapter provided, to valve. (See Fig. 4.)
Connect refrigerant tubing to fittings on outdoor unit vapor and
liquid service valves. Service valves are closed from factory and
ready for brazing. After wrapping service valve with a wet cloth,
tubing set can be brazed to service valve using either silver bearing
or non--silver bearing brazing material. Do not use soft solder
(materials which melt below 800
°
F/427
°
C). Consult local code
requirements. Refrigerant tubing and indoor coil are now ready for
leak testing. This check should include all field and factory joints.
A05226
Fig. 4 -- Liquid Service Valve
Table 2 – Refrigerant Connections and Recommended Liquid
and Vapor Tube Diameters (In.)
UNIT SIZE
LIQUID
RATED VAPOR*
Connection
Diameter
Tube
Diameter
Connection
Diameter
Tube
Diameter
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, 061
3/8
3/8
7/8
1--1/8
* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for performance
data when using different size and length linesets.
Notes
:
1. Do not apply capillary tube indoor coils to these units.
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or
20 ft. (6.1 m) vertical differential, refer to the Residential Piping and Longline
Guideline using Puron refrigerant.
Install Liquid Line Filter Drier Indoor
Refer to Fig. 5 and install filter drier as follows:
1. Braze 5 in. (127 mm) liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
3. Braze filter drier to 5 in. (127 mm) long liquid tube from
step 1.
4. Connect and braze liquid refrigerant tube to the filter drier.
A05227
Fig. 5 -- Liquid Line Filter Drier
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Installation of filter drier in liquid line is required.
25H
C
B
3
/25H
C
C
5
