3
Table1 – Accessory U sage
Accessory
REQUIREDFOR LOW---AMBIENT
COOLINGAPPLICATIONS
(Below55°F / 12.8°C)
REQUIREDFOR
LONGLI NE APPLICATIONS*
REQUIREDFOR
SEACOA ST APPLICATIONS
(Within 2 miles / 3.22 km)
Accumulator Standard Standard Standard
BallBearing FanMotor Yes{No No
CompressorStart Assist Capacitor and
Relay Yes Yes No
Crankcase Heater Ye s Yes No
EvaporatorFreezeThermostat Yes No No
HardShutoffTXV Yes Yes Yes
Isolation Relay Yes No No
LiquidLine Solenoid Valve No SeeLon g---LineApp lication
Guideline No
MotorMaste r®Controlor
LowAmbient Switch Yes No No
SupportFeet 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.
{Additionalr equirement for Low---Ambient Controller (f ull modulation feature) Motor MasterrControl.
Outdoor Unit ConnectedTo Factory Approved IndoorUnit
Outdoor unit contains correct system refrigerant charge for
operationwith approved ARI ratedindoor unit when connectedby
15 ft (4.57 m) of field--supplied or factory --accessorytubin g, 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
servicevalve. Userefrigerant grade tubing.
CAUTION
!
UNITDAMAGE HAZARD
Failure to follow this caution may result in equipment
damageor improper operation.
Service valvesmust be wrapped in a heat--sinking material
such as a wet cloth while brazing.
Remove plasticretainer holding outdoor piston in liquid service
valve, leaving the piston and piston retainerinside 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
readyfor brazing. After wrapping service valvewith 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.Refrigeranttubing and indoor coil arenow ready for
leaktesting. This checkshould include all fieldand factory joints.
A05226
Fig.4 --Liquid ServiceValve
Table2 – RefrigerantConnections and RecommendedLiquid
andVapor Tube Diameters(In.)
UNITSIZE
LIQUID RATEDVAPOR*
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 ratedwith 25 ft. (7.6 m) of lineset. See Product Data sheetfor performance
datawhen usingdifferent size and length linesets.
Notes:
1. Do not apply capi llary tubei ndoorco ilsto these units.
2. For Tubing Set lengthsbetween 80 and 200 ft. (24.38 and 60.96 m)horizontal or
20ft. (6.1 m) verti cal differential, ref er to the Residential Pipi ng and Longline
Guideline using Puron refrigerant .
InstallLiquid Line Filter Drier Indoor
Refer to Fig. 5 and install filter drier as follows:
1. Braze 5 in.(127 mm) liquid tube to the indoorcoil.
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 th e filter drier.
A05227
Fig. 5 --Liq uid Line Filter Drier
CAUTION
!
UNITDAMAGE HAZARD
Failure to follow this caution may result in equipment damage
orimproper operation.
Installation of filter drier in liquid line is requ ired.
25HCB3 / 25HCC5