Electrical Shock Hazard - Carrier C4H5S Installation Instructions Manual

C4H5S, H4H5S, T4H5S: Installation Instructions
Fig. 5 – Liquid Line Filter Drier
Evacuate Refrigerant Tubing and Indoor Coil
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate triple
evacuation method may be used (see triple evacuation procedure in
service manual). Always break a vacuum with dry nitrogen.
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling a
vacuum of 500 microns and a vacuum gage capable of accurately
measuring this vacuum depth. The deep vacuum method is the most
positive way of assuring a system is free of air and liquid water. A tight
dry system will hold a vacuum of 1000 microns after approximately 7
minutes. (See Fig. 6.)
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
0 1 2
Fig. 6 – Deep Vacuum Graph
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
LEAK IN
SYSTEM
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
3 4 5 6 7
MINUTES
Mandatory Requirements
Pressure Proof Check
1. Preform a pressure check of the unit with a nitrogen charge of about
200psi.
2. the Nitrogen holding charge must NOT decrease in pressure for 1
hour, as indicated by the test gauge. The measuring test gauge
resolution not exceeding 5% of the holding charge.
Leak Check
This leak check requires a vacuum pump capable of pulling a vacuum of
at least 500 microns and a vacuum gage capable of accurately measuring
this vacuum depth.
A05227
FIRE HAZARD
Failure to following this warning could result in personal injury, death
and/or property damage.
DO NOT USE FLAMES OR IGNITION SOURCES TO LEAK
CHECK.
1. Vacuum unit to 500 microns.
2. When isolating the unit from the pump, the pressure shall not rise
above 1500 microns in 10 minutes.
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 attention to
feeder tubes, makings sure wire ties on feeder tubes are secure and tight.
Make Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.
Do not supply power to unit with compressor terminal box cover
removed.
Be sure field wiring complies with local and national fire, safety, and
electrical codes, and voltage to system is within limits shown on unit
rating plate. Contact local power company for correction of improper
voltage. See unit rating plate for 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 permissible limits.
NOTE: Use copper wire only between disconnect switch and unit.
NOTE: Install branch circuit disconnect of adequate size per NEC to
handle unit starting current. Locate disconnect within sight from and
A95424
readily accessible from unit, per Section 440-14 of NEC.
Route Ground and Power Wires
Remove access panel to gain access to unit wiring. Extend wires from
disconnect through power wiring hole provided and into unit control
box.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
The unit cabinet must have an uninterrupted or unbroken ground to
minimize personal injury if an electrical fault should occur. The ground
may consist of electrical wire or metal conduit when installed in
accordance with existing electrical codes.
5
WARNING
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WARNING
!
WARNING
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