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SERVICE HINTS
1. Caution homeowner to maintain clean air filters at
all times. Also, not to needlessly close off supply
and return air registers. This reduces air flow
through the system which shortens equipment
service life as well as increasing operating costs.
2. Check all power fuses or circuit breakers to be sure
that they are the correct rating.
3. Periodic cleaning of the outdoor coil to permit full
and unrestricted airflow circulation is essential.
PRESSURE SERVICE PORTS
High and low pressure service ports are installed on all
units so that the system operating pressures can be
observed. Pressure tables can be found later in this
manual covering all models on cooling cycle. It is
imperative to match the correct pressure table to the
unit by model number.
REFRIGERANT CHARGE
The correct system R-22 charge is shown on the unit
rating plate. Optimum unit performance will occur
with a refrigerant charge resulting in a suction line
temperature (6" from compressor) as shown in
Table 11.
TABLE 11
SUCTION LINE TEMPERATURES
R
a
e t
d
M
o
d
l e
A
f r i
o l
w
T
P
1
1
2
4
A
3
8
0
0
P
1
2
2
4
A
2
8
0
0
P
1
1
3
0
A
2
1
1
2
5
P
1
2
3
0
A
1
1
0
0
0
P
1
1
3
6
A
2
1
2
5
0
P
1
2
3
6
A
1
1
1
0
0
P
1
1
4
2
A
3
1
4
0
0
P
1
2
4
2
A
1
1
4
0
0
P
1
1
4
8
A
2
1
5
5
0
P
1
2
4
8
A
2
1
5
5
0
P
1
0
6
0
A
1
1
7
0
0
The above suction line temperatures are based upon
80°F dry bulb/67°F wet bulb (50% RH) temperature and
rated airflow across the evaporator during cooling cycle.
SERVICE AND TROUBLESHOOTING
9
° 5
O
D
8
° 2
O
D
e
m
p
e
a r
u t
e r
T
e
m
p
e
a r
u t
e r
5
4
-
5
6
6
0
-
6
2
5
5
-
5
8
6
1
-
6
3
5
6
-
5
8
6
3
-
6
5
5
6
-
5
8
6
3
-
6
5
5
7
-
5
9
5
8
-
6
0
5
7
-
5
9
5
8
-
6
0
5
7
-
5
9
5
8
-
6
0
5
7
-
5
9
5
8
-
6
0
5
4
-
5
7
5
8
-
6
0
5
3
-
5
5
5
6
-
5
8
4
7
-
4
9
5
4
-
5
6
FAN BLADE SETTINGS
Shown in Figure 10 are the correct fan blade setting
dimensions for proper air delivery across the outdoor
coil.
Any service work requiring removal or adjustment in
the fan and/or motor area will require that the
dimensions below be checked and blade adjusted in or
out on the motor shaft accordingly.
FIGURE 10
FAN BLADE SETTING
TABLE 12
FAN BLADE SETTING DIMENSIONS
M
o
d
l e
P
1
1
2
4
A
3
P
1
2
2
4
A
2
P
1
1
3
0
A
2
P
1
2
3
0
A
1
P
1
1
3
6
A
2
P
1
2
3
6
A
1
P
1
1
4
2
A
3
P
1
2
4
2
A
1
P
1
1
4
8
A
2
P
1
2
4
8
A
2
P
1
0
6
0
A
1
i D
m
e
n
s
o i
n
"
A
"
1
0 .
" 0
1
0 .
" 0
7 .
" 5
1
0 .
" 0
1
0 .
" 0
1
0 .
" 0
1
7 .
" 5
1
7 .
" 5
1
7 .
" 5
1
7 .
" 5
1
7 .
" 5
Manual 2100-353
Page
19
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