Installation guide

TaMe 2--Accessory Usage
REQUBRED FOR REqURRED FOR REQUIRED FOR
LOW-AMBiENT LONG-LINE SEA COAST
ACCESSORY
APPLICATBONS APPLICATIONS* APPLICATIONS
(BELOW 55°F) (OVER 50 FT) {WITHIN 2 MBLES}
Crankcase Heater Yes Yes No
Evaporator Freeze Thermostat Yes No No
Winter Start Control Yes? No No
Accumulator No No No
Compressor Start Assist Yes Yes No
Capacitor and Relay
MotorMaster@ Control,
or Yes No No
Low-Ambient Pressure Switch
Wind Baffle See Low-Ambient instructions No No
Coasta_ FiRer No No Yes
Support Feet Recommended No Recommended
Liquid_LineSolenoid Valve
or No See Long-Line Application Guideline No
Nard Shutoff TXV
Ball Bearing Fan Motor Yes$ No No
* For Tubing Sets between 50 and 175 fl horizontal or 20 fl vertical differential, refer to the Application Guideline and Service Manual--Air Conditioners and Heat Pumps
Using Puron® Refrigerant
? Only when low-pressure switch is used
$ Required for low-ambient controller (full modalation feature) and MotorMaster® Control only.
Triple Evacuation Method 5000
The triple evacuation method should only be used when vacuum 4500
pump is only capable of pumping down to 28 in of mercury 4000
vacuum and system does not contain any liquid water Refer to
3500
Fig. 8 and proceed is as fbllows: o_
_3 3000
1. Pump system down to 28 in. of mercm 7 and allow pump to ,y
25OO
continue operating _br an additional 15 minutes
2. (?lose service _ahes and shut off vacuum pump. _ 2000
1500
3. (onnect a nitrogen cylinder and regulator to system and open
until system pressure is 2 psig 1000
4. (lose senice vahe and allow system to stand h_r 1 hr During 500
this time, dry nitrogen wilt be able to di_h_se throughout the
system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 8. System will then
be fi'ee of any contaminants and water vapor.
LIQUID-LINE
FILTER-DRIER
CONNECTOR
TUBE
Fig. 6--Liquid-Line FHter Drier
A95509
FINAL TUBING CHECK
IMPORTANT: Check to be certain factory tubing on both indoor
and outdoor unit has not shifted during shipment, Ensure tubes are
not rubbing against each other or any sheet metal Pay close
LEAK IN
SYSTEM
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
0 1 2 3 4 5 6 7
MINUTES
A95424
Fig. 7--Deep Vacuum Graph
attention to t'_eder tubes, making sure wire ties on feeder tubes are
secure and tight.
Step 8--Make Electrical Connections
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
or* unit rating plate. Contact local power company fbr con'ection of
improper voltage See unit rating plate _br recommended circuit
protection device
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit rating plate Do not
install unit in system where voltage may fluctuate above or below
pmmissible limits.
NOTE: Use copper wire only between disconnect switch and
unit
NOTE: Install branch circuit disconnect of adequate size per
NE( to handle unit starting current Locate disconnect within sight
fl'om and readily accessible [_'om unit, per Section 440-14 of NEC.