User`s manual

PREoSTARToUP
Failure to obselwe the %llowing warnings could result in
serious injury:
I Follow recognized safhty practices and wear protective
goggles when checking or se_'icing reffigeiant system
2 Do not operate compressor or provide any electric power to
onit unless compressor tem_inal cover is in place and
secured.
3. Do not remove compressor terminal cover until all electli=
cal sources are disconnected.
4. Relieve and recover all refrigerant fi'om system before
touching or disturbing anything inside terminal box if
ret'rigerant leak is suspected around compressor terminals.
5. Never attempt to repair soldered connection while refrig=
erant system is under pressure.
6. Do not use torch to remove any component. System
contains oil and refrigerant under pressure. To remove a
component, wear protective goggles and proceed as fbl=
lows:
a. Shut off gas supply and then electrical power to unit.
b. Relieve and recover all refrigerant fi'om system using
both high= and low=pressure ports.
c. Cut component connecting tubing with robing cutter and
remove component fi'om unit.
d. Carefully unsweat remaining tubing stubs when neces=
sary. Oil can ignite when exposed to torch flame.
Proceed as %llows to inspect and prepare the unit %r initial
startup:
1. Remove access panel
2. Read and follow instluctions on all WARNING, (AUTION,
and IN'FORMATION labels attached to, or shipped with, unit
3. Make the following inspections:
a Inspect for shipping and handling damages such as broken
lines, loose parts, disconnected wires, etc.
b. Inspect fbr oil at all refrigerant robing connections and on
unit base Detecting oil generally indicates a refrigerant
leak.
c Leak test all refrigerant robing connections using electronic
leak detector, halide torch, or liquid=soap solution If a
refrigerant leak is detected, see the Checkii_r Rc/i'ige_'c,t_t
Leal_s section.
d. Inspect all field= and fhctoo'=wiring connections. Be sure
that connections are completed and tight.
e. Ensure wires do not contact refrigerant robing or sharp
sheet metal edges.
f\ Inspect coil fins. If damaged during shipping and handling,
carefully straighten fins with a fin comb.
4. Veri/) the fbllowing conditions:
Do not purge gas supply into the con£bustion chamber Do not
use a match or other open flame to check for gas leaks
Failure to follow this warning could result in an explosion
causing serious injury or death.
a. Make sure gas line is fi'ee of air. Be%re lighting the unit %r
the first time, perfbrm the fbllowing with the gas valve in
the "OFF" position:
If the gas supply pipe was not purged before connecting
the unit, it will be full of air. It is recommended that the
15
ground joint union be loosened, and the supply line be
allowed to purge until the odor of gas is detected. Never
purge gas lines into a combustion chamber Immediately
upon detection of gas odor, retighten the union Allow 5
minutes to elapse_ then light unit.
b. Make sure that condenser-fan blade is correctly positioned
in fbn orifice. Leading edge of condenser=tim blade should
be 1/2 in. maximum from fan orifice venmri.
c. Ensure fan hub is 1/8 in. maximum fi'om motor housing
(See Fig. 12).
MOTOR _. .... , FAN GRILLE
1/8"MAX BETWEEN _J "'-
MOTORAND FANHUB MOTOR SHAFT
C99009
Fig. 12--Fan Blade Clearance
d. Make sure that air filter(s) is in place.
e. Make sure that condensate drain trap is filled with water to
ensure proper drainage.
£ Make sure that all tools and miscellaneous loose parts have
been removed.
MANIFOLD PIPE PLUG
C99019
Fig. 13--Burner Assembly
STAR%UP
Step I--CHECK FOR REFRIGERANT LEAKS
Proceed as follows to locate and repair a refrigerant leak and to
charge the unit:
1. Locate leak and make sure that refi'igerant system pressure has
been relieved and reclaimed Ii'om both high= and low-pressure
porls.
2. Repair leak fbllowing Refiigerant Service procedures.
NOTE[: Install a filter drier whenever the system has been opened
for repair.
3 Add a small charge of R-22 refi'igerant vapor to system and
leak-test unit.