Manual
2100-468E
Page
22 of 27
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 in
Table 10 be checked and blade adjusted in or out on the
motor shaft accordingly.
SERVICE
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 airflow through the
system which shortens equipment service life as well as
increasing operating costs.
2. Switching to heating cycle at 75°F or higher outside
temperature may cause a nuisance trip of the high
pressure switch.
3. The heat pump wall thermostats perform multiple
functions. Be sure that all function switches are
correctly set for the desired operating mode before
trying to diagnose any reported service problems.
4. Check all power fuses or circuit breakers to be sure that
they are the correct rating.
5. 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 in Tables 11 & 12
in this manual covering all models on both cooling and
heating cycles. It is imperative to match the correct
pressure table to the unit by model number.
REFRIGERANT CHARGE
The correct system R-410A charge is shown on the unit
rating plate.
You can reference Tables 11 & 12 to validate proper
system operation. However, it is recommended that if
incorrect charge is suspected, the system refrigerant be
reclaimed, evacuated and charged to the nameplate
refrigerant charge quantity and type.
The nameplate charge quantity is optimized for thermal
performance and efficiency of this self-contained package
system.
TABLE 10
FAN BLADE SETTING
DIMENSIONS
l
e
d
o
M
n
o
i
s
n
e
m
i
D
"
A
"
4
2
3
1
H
P
0
3
3
1
H
P
6
3
3
1
H
P
2
4
3
1
H
P
8
4
3
1
H
P
0
6
3
1
H
P
"
5
2
.
3
"B"
FIGURE 10
FAN BLADE SETTING
“A”
MD-1417BC
