Premier Ductable
Heater
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Owner’s Manual •
Premier 350DF 2.0
24
FIG. 35
OUTLET PRESSURE TAP
INLET PRESSURE TYPE
INTERNAL PRESSURE REGULATOR
GAUGE AT VALVE INLET
GAUGE AT VALVE OUTLET
C. Reading Pressures
1. With the heater operating, the pressure gauges should read
the pressures specified on the dataplate.
2. Do the readings at the inlet and outlet pressure gauges
agree with that specified on the dataplate? If so, then no
further checking or adjustment is required. Proceed to
section D.
3. If the inlet pressures do not agree with that specified on the
dataplate, then the regulator controlling gas pressure to the
heater requires adjustment.
4. If the inlet pressure is correct but the burner manifold pres-
sure does not agree with that specified on the dataplate,
then the gas control valve’s internal pressure regulator
needs adjustment:
-- Remove the regulator cap on the control valve.
-- Using a standard screwdriver turn the adjusting screw
clockwise (to increase pressure) or counter-clockwise
(to decrease pressure) until the burner manifold pressure
is set.
-- Install regulator cap.
-- Proceed to COMPLETION.
D. Completion
1. Once the proper inlet and burner manifold pres-
sures have been confirmed and/or properly set,
close the fuel supply valve to the heater and allow
the heater to burn off any gas remaining in the gas
supply line.
2. Disconnect the heater from its electrical supply and
close fuel supply valve.
3. Remove the gauges.
4. Install pressure tap plugs.
5. Open fuel supply valve and reconnect electrical
supply to heater. Start the heater and check for
gas leaks.
6. Set thermostat to desired temperature.
1. Locate the gas control pressure tap, see Fig. 35.
Remove the pressure tap plugs using a 3/16 in. Allen
key.
2. Securely connect pressure gauges at these points.
3. Open the fuel supply valves to the heater and reconnect
the heater electrical supply.
4. Start the heater.
B. Gauge Installation
