Note: If pilot goes out, repeat steps 3
through 7. This heater has a safety inter-
lock system. Wait one (1) minute before
lighting pilot again.
8. Turn control knob counterclockwise
to desired heating level. The main burner
should light. Set control knob to any heat
level between 1 and 5.
OFF
Control Knob
THERMOSTAT CONTROL OPERATION
The thermostatic control used on this model
differs from standard thermostats. You set
standard thermostats to a specific tempera-
ture such as 72 degrees. The thermostat
used on this heater senses the room tem-
perature. At times the room may exceed the
set temperature. If so, the burner will shut
TO TURN OFF GAS TO APPLIANCE
Shutting Off Heater
Turn control knob clockwise
OFF position.
MANUAL LIGHTING PROCEDURE
1. Remove lower front panel.
2. Follow steps 1 through 5 under Lighting
Instructions, page 19.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 30 sec-
onds after lighting pilot. After 30 seconds,
release control knob. Follow step 8 under
Lighting Instructions, page 19.
5. Replace lower front panel.
20
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OPERATION
just heating levels by using the
equipment shutoff valve.
NG, make sure NG pilot burner ig-
nites. If input gas type is LP, make
sure LP pilot burner ignites.
MNSD3TPA
MNSD2TPA
MNSD3TPA-BB
Burners on HIGH
Burners OFF
Figure 21 - Burner Patterns
off. The burner will cycle back on when room
temperature drops below the set temperature.
The control knob can be set to any comfort
level between HIGH (5) and LOW (1).
Note: The thermostat sensing bulb reacts
to the temperature depending on housing
construction.
to the
Turn control knob clockwise
PILOT position.
Natural Gas
Burner
www.usaprocom.com
CAUTION: Do not try to ad-
WARNING: If input gas type is
MNSD5TPA
MNSD5TPA-BB
Shutting Off Burner Only (pilot
stays lit )
Ignitor
Electrode
Pilot Air
Inlet Hole
Pilot Air Inlet Hole
Figure 22 - Pilot Assembly
to the
Thermocouple
Propane/LP
Gas Burner
200218-01A