INSTALLATION INSTRUCTIONS
R
−
22 Split System Air Conditioner
421 01 5203 02
3
Specifications subject to change without notice.
NOTE:
When unit is to be installed on a bonded
guaranteed roof, a release must be obtained from the
building owner to free the installer from all liabilities.
C. FASTENING UNIT DOWN
If conditions or local codes require the unit be attached in
place, remove the knockouts in the base pan and install
tie down bolts through the holes (refer to Figure 2).
Contact local distributor for hurricane hold
−
down details
and the P.E. (Professional Engineer) certification, when
required.
!
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in
property damage.
Inadequate unit support may cause excessive
vibration, noise, and/or stress on the refrigerant
lines, leading to refrigerant line failure.
Figure 2
Tie Down Knockouts
Base
Pan
Depth
C
B
A
Base Pan Width
a
”
(10mm)
dia. Tie Down Knockouts
In Base Pan (2 places)
View From Top
Inches (mm)
Base Pan
Width x Depth
Tie Down
Knockouts
Minimum
Mounting Pad
Dimensions
A
B
C
23 x 23
(584 x 584)
7
−
3/4
(197)
4
−
7/16
(113)
18
(457)
23 x 23
(584 x 584)
25
−
11/16 x 25
−
11/16
(652 x 652)
9
−
1/16
(230)
4
−
7/16
(113)
21
−
1/4
(540)
26 x 26
(660 x 660)
31
−
1/8 x 31
−
1/8
(791 x 791)
9
−
1/16
(230)
6
−
1/2
(165)
24
−
5/8
(625)
31
−
1/2 x 31
−
1/2
(800 x 800)
REFRIGERATION SYSTEM
A. COMPONENT MATCHES
Check to see that the proper system components 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. 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.
The compressors for these units are supplied with Polyol
Ester (POE) Oil. If the existing line set and indoor coil has
residual mineral oil (MO) there is no concern with
percentage of oil mixtures as both are miscible with the
R
−
22. Mixtures of both oils at any percentage will
lubricate and return with the R
−
22.
!
WARNING
EXPLOSION AND FIRE HAZARD
Failure to follow this warning could result in
property damage, personal injury, or death.
This unit is designed to use ONLY R
−
22
refrigerant. Use ONLY R
−
22 refrigerant when
charging or servicing this unit.
DO NOT under any circumstances use any
refrigerant other than R
−
22 in this unit.
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
TXV
SENSING
BULB
EQUALIZER
TUBE
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
ÉÉ
8 O’CLOCK
4 O’CLOCK
STRAP
SENSING
BULB
(EITHER
SIDE)
SUCTION
TUBE
INDOOR
COIL
SUCTION
TUBE
LIQUID
TUBE
