34SCA5: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
9
Final Checks
IMPORTANT:
Before leaving job, be sure to do the following:
1. Ensure that all wiring is routed away from tubing and sheet metal
edges to prevent rub-through or wire pinching.
2. Ensure that all wiring and tubing is secure in unit before adding
panels and covers. Securely fasten all panels and covers.
3. Tighten service valve stem caps to 1/12-turn past finger tight.
4. Leave Owner’s Manual with owner. Explain system operation and
periodic maintenance requirements outlined in manual.
5. Fill out Dealer Installation Checklist and place in customer file.
Repairing Refrigerant Circuit
When breaking into the refrigerant circuit to make repairs, or for any
other purpose, the following procedures shall be used.
1. Safely remove the refrigerant using a recovery pump certified for
flammable refrigerants.
2. Purge the refrigerant circuit with nitrogen gas.
3. Evacuate the refrigerant circuit to 1500 microns.
4. Break vacuum with a nitrogen purge of the refrigerant circuit
ensuring that the outlet of the vacuum pump is not near a potential
ignition source.
5. Open the circuit by cutting or brazing.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible equipment
failure, periodic maintenance must be performed on this equipment.
Frequency of maintenance may vary depending upon geographic areas,
such as coastal applications. See Owner’s Manual for information.
WARNING
!
PERSONAL INJURY AND/OR PROPERTY DAMAGE
HAZARD
Failure to follow this warning could result in personal injury and/or
property damage.
For continued performance, reliability, and safety, the only approved
accessories and replacement parts are those specified by the equipment
manufacturer. The use of non-manufacturer approved parts and
accessories could invalidate the equipment limited warranty and result
in fire risk, equipment malfunction, and failure.
Please review manufacturer's instructions and replacement part catalogs
available from your equipment supplier.
Table 5 – Accessory Usage
ACCESSORY
REQUIRED FOR LOW-AMBIENT COOLING
APPLICATIONS
(Below 55°F/13°C)
REQUIRED FOR LONG LINE
APPLICATIONS
*
*.For tubing line sets between 80 and 200 ft. (27 and 61 m) and/or 35 ft. (11 m) vertical differential, refer to Residential Piping and Long Line Guideline.
REQUIRED FOR
SEA COAST
APPLICATIONS
(Within 2 miles/3.2 km)
Ball Bearing Fan Motor
Yes
†
†.Additional requirement for Low-Ambient Controller (full modulation feature) MotorMaster® Control.
No
No
Compressor Start Assist Capacitor and
Relay
Yes
Yes
No
Crankcase Heater
Yes
Yes
No
Evaporator Freeze Thermostat
Yes
No
No
Hard Shut-Off TXV
Yes
Yes
No
Liquid Line Solenoid Valve
No
See Residential Piping and Long
Line Guideline
No
Motor Master or Low-ambient Pressure
Switch
Yes
‡
‡.In units equipped with ECM OD motor, motor and fan needs to be replaced per unit accessory guide to work properly. Unit will not meet AHRI rated efficiency once motor and fan are
replaced to use this accessory.
No
No
Winter Start Control
Yes
**
**.Required if Low Pressure Switch is factory or field installed.
No
No
