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MODU-FIRE® FORCED DRAFT
Gas-Fired Boiler Operation
4.0 OPERATION
4.1
GENERAL
The front of the control panel shows Operating In-
structions and a series of illuminated indicator lights
and the temperature control. The boiler operating
controls are accessed by turning the pop-latches ¼
turn, and opening the front cover.
4.1.1 Normal Operation
Under normal operating circumstances, this boiler
functions as a fully automatic appliance. The auto-
matic control senses the water outlet temperature
and fires the boiler when heat is needed by the sys-
tem. Additionally this boiler may function as part of
an integrated building management system.
4.2
LIGHTING AND SHUT-DOWN PROCEDURES
WARNING!
Do not use this boiler if any part has been under wa-
ter. Immediately call factory-trained personnel to
inspect the boiler and replace any part of the control
system and any gas control which has been exposed
to water.
Interior Control Panel
(See 6.1.2 for details)
On/Off Switch
Instructions
Pop-Latch (2)
Indicator Lights
Temperature Control
Exhaust
Vent
Main Gas
Shutoff Valve
Electrical
Connection
Box
Air Inlet
Water
Inlet
Water
Outlet
Fuel/Air
Ratio
Valve
Boiler
Condensate
Drain
Boiler Rear
Components
22