Filter
Top Products
Version B - For Reduction G016.J
®
3
Model 3VH18A - Propane
Model 3VH19A - Natural Gas
Dayton Operating Instructions and Parts Manual
HIGH
MEDIUM
Theory of Operation
Figure 2 - Product Identification
Product Identification
THE FUEL SYSTEM
Propane Model: The hose/regulator
assembly attaches to the propane gas
supply. This provides fuel to the heater.
Natural Gas Model: The gas supply
attaches to the heater by a minimum 3/4
inch i.d. hose or flexible connector. User
must supply hose or flexible connector.
The length should be no more than 10
feet long. The natural gas moves through
the regulator and out the nozzle.
THE IGNITION SYSTEM
The piezo ignitor lights the main burner.
THE AUTOMATIC CONTROL SYSTEM
This system causes the heater to shut
down if the flame goes out.
General Safety Information
(Continued)
• Never move, handle, or service a hot
or operating heater. Severe burns
may result. You must wait 20
minutes after turning heater off.
• To prevent injury, wear gloves when
handling heater.
• Never attach duct work to heater.
• Do not alter heater. Keep heater in
its original state.
• Do not use heater if altered.
• Turn off gas supply to heater when
not in use.
• Use only original replacement parts.
This heater must use design-specific
parts. Do not substitute or use
generic parts. Improper replacement
parts could cause serious or fatal
injuries.
Piezo Ignitor Button
Valve
Inlet
Shell
Base
Control
Knob
Hose/Regulator
Assembly for
Propane Gas
Ignitor
Electrode
Burner
Tube
Thermocouple
Top
Base
Shield
Upper Shield
Lower Shield
Emitter
Regulator for
Natural Gas