Owner's Manual

Version B - For Reduction G016.J
®
5
Model 3VH21
Dayton Operating Instructions and Parts Manual
ON
OFF
TO STOP HEATER
1. Tightly close natural gas supply valve.
2. Using a gloved hand, shut off main
burner valve. Do this by turning main
burner valve handle towards the OFF
position until it stops.
Note: Arrows on main burner valve
handle show direction for ON and OFF.
TO RESTART HEATER
1. Wait five minutes after stopping heater.
2. Restart heater by following steps under
To Start Heater.
Figure 4 - Main Burner Valve Handle, Automatic Control Valve Button, and Piezo Ignitor
Button Locations with Regulator Installed
Piezo Ignitor
Button
Main Burner
Valve Handle
Automatic
Control
Valve Button
Operation
Review and
understand the
warnings in the Safety Information
Section. They are needed to safely
operate this heater. Follow all local
codes when using this heater.
TO START HEATER
1. Follow all installation, ventilation, and
safety information.
2. Locate heater on stable and level
surface. Make sure strong drafts do
not blow on heater.
Fully close main
burner valve
before lighting pilot. If not, severe
burns can occur. Do this by turning
valve handle towards the OFF position
until it stops.
3. Open natural gas supply valve slowly.
4. Push in and hold automatic control
valve button (see Figure 4). Push piezo
ignitor button (see Figure 4). You may
need to push the piezo ignitor button
3-8 times until the pilot lights.
Note: Hose may be filled with air. If so,
keep automatic control valve button
pressed and wait 20 seconds for gas to
clear before pressing ignitor button
again. When pilot lights, keep auto-
matic control valve button pushed in.
Release button after 30 seconds.
5. If pilot light goes out, repeat step 4.
6. When pilot remains lit, fully open main
burner valve. Do this by turning main
burner valve handle towards the ON
position until it stops.
Note: Arrows on main burner valve
handle show directions for ON and OFF.