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REFRIGERATION SYSTEM
A. COMPONENT MATCHES
Check to see that the proper system componenis are in
place, especially the indoor coil.
R-22 outdoor units can only be used with R-22 specific
indoor coils. If there is a refrigerant mis-match, consult
the indoor coil manufacturer to determine if a refrigerant
conversion kit is available for the indoor coil.
This outdoor unit is designed for use only with indoor coils that
utilize a TXV refrigerant metering device or Piston metering
device. If any other type of metering device is installed on the
indoor coil, consult the indoor coil manufacturer to determine if
a TXV conversion kit is available.
CAUTION
UNIT OPERATION
HAZARD
This unit utilizes R-22 refrigerant. Use only R-22
refrigerant when servicing this unit.
DO
NOT
under any circumstances
use R-410A
refrigerant in this system.
A
Installing with TXV
When
installing
a TXV
on
an
indoor
coil, follow
the
instructions provided with the new TXV.
A typical TXV installation is shown in Figure 3.
Figure 3
Typical TXV Installation
INDOOR
COIL
EQUALIZER
|
TUBE
SENSING
|
SUCTION
BULB
TUBE
~~ LIQUID
TUBE
TXV
SENSING
BULB
(EITHER SIDE)
STRAP
SUCTION
8 O'CLOCK
4 O'CLOCK
Installing with Indoor Piston - cooling operation
Check
piston size shipped with indoor unit to see if it
matches required indoor piston size.
If it does not match,
replace indoor piston with correct
piston size.
B. REFRIGERANT LINE SETS
The refrigerant line set must be properly sized to assure
maximum efficiency and proper oil circulation.
Refer
to
Product
Specifications
and
Long
Line
Applications Guideline for line set sizing.
NOTE:
Total line set length must not exceed
200 feet
(61m).
A crankcase heater must be used when the refrigerant
line length exceeds 80 feet (24.4m).
If outdoor unit is more than 10 feet (8m) higher than the
indoor coil, refer to the Long Line Applications Guideline
manual for instructions.
When the outdoor unit is higher than the indoor coil, the
vertical separation must not exceed 100 feet (80m).
When the outdoor unit is lower than the indoor coil, the
vertical separation must not exceed 50 feet (15.2m).
If it is necessary to add refrigerant line in the field, use
dehydrated
or
dry,
sealed,
deoxidized,
copper
refrigeration tubing. Do not use copper water pipe.
Do not remove rubber plugs or caps from copper tubing
until connections are ready to be made.
Be
extra
careful
when
bending
refrigeration
tubing.
Tubing
can "kink" easily, and
if this occurs, the entire
length of tubing must be replaced.
7
aN
Le
PERSONAL INJURY HAZARD
Failure to relieve system pressure could result in
personal injury and/or death.
Relieve pressure and recover all refrigerant before
servicing existing equipment, and before final unit
disposal. Use all service ports and open all flow-
control devices, including solenoid valves.
A
CAUTION
UNIT OPERATION
HAZARD
Failure to follow this caution may result in improp-
er product operation.
Do not leave system open to atmosphere any lon-
ger than absolutely required for installation. Inter-
nal system
components
- especially
refrigerant
oils - are extremely susceptible to moisture con-
tamination.
Keep
ends
of tubing
sealed
during
installation until the last possible moment.
421 01 6400 00
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