14
101697
Air Output, Air Intake,
and Lint Filters
1. Remove upper shell (see
Upper Shell Removal,
page 13).
2. Remove filter end cover
screws using 5/16" nut-
driver.
3. Remove filter end cover.
4. Replace air output and lint
filters.
5. Wash or replace air intake
filter (see Preventative
Maintenance Schedule,
page 10).
6. Replace filter end cover.
7. Replace fan guard and
upper shell.
IMPORTANT:
Do not oil filters.
Figure 14 - Air Output, Air Intake, and Lint Filters, 70,000 BTU/Hr Model
Air Intake
Filter
Filter End
Cover
Fan
Guard
Lint Filter
Air Output
Filter
Figure 15 - Air Output, Air Intake, and Lint Filters, 110,000 and 150,000 BTU/Hr Models
Air Output
Filter
Lint Filter
Air Intake
Filter
Filter End
Cover
Fan Guard
Pump Pressure
Adjustment
1. Remove pressure gauge
plug from filter end cover.
2. Install accessory pressure
gauge (part number
HA1180).
3. Start heater (see Operation,
page 7). Allow motor to
reach full speed.
4. Adjust pressure. Turn relief
valve to right to increase
pressure. Turn relief valve
to left to decrease pressure.
See specifications at right
for correct pressure for
each model.
5. Remove pressure gauge.
Replace pressure gauge
plug in filter end cover.
Pump Regulator
Valve
Pressure
Gauge
Plug
Figure 16 - Pressure Gauge Plug Removal
Pump
Model
Pressure
70,000 BTU/Hr
4.0 PSI
110,000 BTU/Hr
4.5 PSI
150,000 BTU/Hr
5.2 PSI
(70,000 BTU/Hr Model Shown)
Figure 17 - Adjusting Pump Pressure
Pressure
Gauge
