6
8) Remove the corresponding drain line
knockout from the coil access door to allow
access to the horizontal drain.
9) Replace the door.
NOTE:
Install drainpan extension (supplied) on
the following models:
C5BH-*60
C4BH-X36
C5BH-*49
C4BH-X48
C4BH-X60
Note: All condensate pans have primary and
secondary drain connections to meet FHA
requirements. If the application is located in
or above a living space where damage may
result from condensate overflow, a separate
3/4 inch drain must be provided from the
secondary drain connection and a secondary
drain pan must be installed under the entire
unit. Run secondary drain lines to a place
where they are noticeable if used.
4. VERIFY PRESSURIZATION
WARNING:
This coil is pressurized with Nitrogen.
Avoid direct face exposure or contact
with valve when gas is escaping.
Always ensure adequate ventilation
is present during the depressurization
process. Any uncertainties should be
addressed before proceeding.
VERIFY PRESSURIZATION:
-
Test by depressing Schrader valve and listen
for escaping gas
- If no pressure is found, test coil for leak
- If no leak is found, install coil
- If leak is found, clearly mark leak
location and return coil to your distributor
for processing
5. REFRIGERANT LINE
CONNECTIONS
WARNING:
This coil is pressurized with Nitrogen.
Avoid direct face exposure or contact
with valve when gas is escaping.
Always ensure adequate ventilation
is present during the depressurization
process. Any uncertainties should be
addressed before proceeding.
NOTE:
For coils with factory installed TXV valve
proceed to step #8.
NOTE:
Before proceeding with the connection of
the refrigerant lines, confirm that the orifice size
meets the requirements outlined in the outdoor
unit installation manual. Factory installed orifice
sizes are listed in the Specifications section. If
the restrictor orifice must be replaced, follow
the steps below:
1. Remove the valve cap from the end of the
liquid line. Relieve all pressure from the
coil by depressing the valve. Remove the
valve core. Properly dispose of all removed
parts.
2. Loosen the orifice/distributor body halves by
applying two wrenches and squeezing them
together, as shown in Figure 3 , to turn the
assembly nut counter-clockwise.
3. Continue to unscrew the assembly nut
to separate it from the distributor body
portion.
4. Insert a light-gauge wire hook between the
distributor body and the orifice to lift the
orifice out of the body. (See Figure 4) Remove
the orifice being careful not to scratch either
part.
5. Check the actual size of the new orifice (the
size is stamped on the side of the orifice).
Do not use pin gauges to measure the orifice
diameter.
NITROGEN
HEALTH
FLAMMABILITY
REACTIVITY
0 Minimal Hazard
1 Slight Hazard
1
0
0
NITROGEN
HEALTH
FLAMMABILITY
REACTIVITY
0 Minimal Hazard
1 Slight Hazard
1
0
0
