Operation, To Start Heater, Flame Patterns

Dayton Operating Instructions and Parts Manual

Model 3VH22

Operation

Review and understand the

warnings in the General Safety Infor- mation 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.

3.Make sure unit is turned off by lightly depressing and turning control knob fully clockwise to OFF.

4.Open propane supply valve on propane tank(s) slowly.

NOTE: If not opened slowly, excess-flow check valve on propane tank may stop gas flow. If this happens, you may hear a click inside the regulator assembly. This is the check valve closing. To reset the excess flow check valve, close propane supply valve and open it again slowly.

5.Slightly depress and turn control knob counterclockwise to the low position (See Figure 5).

6.With the control knob pushed all the way in, press and release the piezo ignitor button. Keep pressing ignitor button until the burner lights. Hold control knob down for a maximum of 15 seconds while attempting ignition. If heater does not ignite, release control knob and wait 3 minutes before attempting reignition.

NOTE: Keep hands and face away from outlet (around top of shell) of heater while attempting to start heater.

7.After ignition, hold control knob down for approximately 30 seconds. This activates the automatic control system.

8.When burner remains lit, set heater at the desired heat level by slightly depressing the control knob and turning counterclockwise to the Medium or High settings (see Figure 5).

9.If burner goes out, turn off gas. Slightly depress and turn control knob fully clockwise to OFF. Check fuel supply. If adequate fuel is available, restart heater beginning at Step #1.

Off Low

Piezo Ignitor Position Position

Button

		O	FF	HI
LO		FF	O	HI
LO
M	ED	HI	LO	ED
	ED			M

OFF
LO	HI
MED

Control

Knob

Figure 5 - Control Knob, and Piezo Ignitor Button Locations

Correct Flame Pattern

Slight Yellow

Coloring on

Flame Ends

Burner

Tube

OFF
LO	HI
MED

FLAME PATTERNS

Figure 6 shows a correct flame pattern. The burner flame is mostly blue with a slight yellow coloring on the ends.

Figure 7 shows an incorrect flame pattern. The flame is mostly yellow. The incorrect flame pattern results from low gas pressure or from flashback.

Running heater below specified

input rating may cause flashback. During flashback, the burner flame is mostly yellow. The flame will burn inside the burner tube, causing a roaring noise. If flashback occurs, turn heater off. After burner tube cools, restart the heater.

Blue Flame

Desa 3VH22 instruction manual Operation, To Start Heater, Flame Patterns