Pre Start-Up; Typical Installation; Condensate Trap; Pvc Condensate Trap - Carrier 50ZH Series Installation, Start-Up And Service Instructions Manual

PRE-START-UP
Failure to observe the lollowing warnings could result in
serious inju U or death:
1. Follow recognized salk:ty practices and wear protective
goggles when checking or servicing reb'igerant system.
2. Do not operate compressor or provide any electric power to
unit unless compressor terndnal cover is in place and
secured.
3. Do not remove compressor terminal cover tmtil all electri-
cal sources arc disconnected and lockout tag is installed.
4. Relieve all pressure fl'om both high- and low-pressure sides
of the system belk_re touching or disturbing anything inside
temfiual box if refrigerant leak is suspected around con>
pressor terminals. Use accepted methods to recover refrig-
erant.
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 rel]'igerant under pressure. To remove a
component, wear protective goggles and proceed as lol-
lows:
a. Shut olT electrical power to unit and install lockout tag.
b. Relieve all refrigerant from system using both high- and
low-pressure ports. Use accepted methods to recover
refrigerant.
c. Cut component connecting tubing with tubing cutter and
remove component fi'om unit.
d. Carefully unsweat renmiuing tubing stubs when neces-
sary. Oil can ignite when exposed to torch flame.
Use the Start-Up Checklist supplied at the end of this book and
proceed as IkHlows to inspect and prepare the unit Ik_r initial
start-up:
1. Remove all access panels.
2. Read and I]Hlow instructions on all DANGER, WARNING,
CAUTION, and INFORMATION labels anached to, or
shipped with, unit.
Make the R_llowing inspections:
a. Inspect I_r shipping and handling damages such as broken
lines, loose parts, disconnected wires, etc.
b. Inspect lor oil at all refrigerant tubing connections and on
unit base. Detecting oil generally indicates a refrigerant
leak. Leak-test all refiigerant tubing connections using
electronic leak detector, or liquid-soap solution. If a refrig-
erant leak is detected, see I_Hlowing Check I_)r Refiigerant
Leaks section.
c. Inspect all field- and factory-wiring connections. Be sure
that connections are completed and tight. Ensure wires do
not contact rel_'igerant robing or sheet metal edges.
d. Inspect coil fins. If damaged during shipping and handling,
carelidly straighten fins with a fin comb.
3. Verify the lollowing conditions:
a. Make sure that outdoor-fan blade is correctly positioned in
fan orifice. Top edge of blade should be 3.125 in. down
l]'om outdoor coil outlet grille (size 030 048, See Fig. 23)
or hub should be 0.70g-in. away l_'om motor end bell (size
061L See Fig. 24). See Outdoor Fan Adjustment section.
b. Make sure that air filter is in place.
c. Make sure that condensate drain trap is filled with water to
ensure proper drainage.
I Power Wiring
-- Control Wiring
_ Condenser Airflow *Sepa ate disconnect per NEC
E_ (National Electrrca_ Code required
_ eec _c hea er when s ng e
Evaporato_Arrf_ow point c_nectionrs not used¸ C0000t_
C00008
Table 2--Minimum Airflow for Safe Electric Heater
Operation (CFM)
SIZE
030 036 042 048 060
750 900 1050 1200 1500
Fig. 8--Typical installation
1" (25ram) MIN.
TRAP
OUTLET _
2" (50mm) MIN
C99013
Fig. 9--Condensate Trap (Using Tubing)
1" min.
< TRAP
OUTLET
2" min.
C00009
Fig. lO-PVC Condensate Trap
d. Make sure that all tools and miscellaneous loose parts have
been renloved.
START-UP
Use the Start-Up Checklist supplied at the end of this book and
proceed as lk_llows:
Step 1--Check for Refrigerant Leaks
LOCATE AND REPAIR REFRIGERANT LEAKS AND
CHARGE THE UNIT AS FOLLOWS:
1. Using both high- and low-pressure ports, locale leaks and
reclaim renmining refrigerant to relieve system pressure.
2. Repair leak lk)llowing accepted practices.
NOTE: Install a liquid-line l]lter drier whenever the system has
been opened lk)r repair.