Desa DNV40NB Operating Furnace, For Your Safety Read Before Lighting, Operating Instructions

DYNAVENT®

DIRECT-VENT NATURAL GAS HEATER

OPERATING

FURNACE

WARNING: Furnace burner, combustion chamber, and ex- haust port are very hot during operation. Keep children and adults away from hot surfaces to avoid burns and clothing igni- tion. Carefully supervise young children when they are in the same room as furnace. Furnace will remain hot for a time after shutdown. Let surface cool be- fore touching.

WARNING: Do not operate furnace with front cover removed. Unsafe operation could result.

CAUTION: Do not block cir- culating air openings in the lou- ver of the front cover. This is necessary for furnace to operate properly.

NOTICE: If operating furnace for the first time, a slight odor will occur. This odor will go away after a few hours of operation.

FOR YOUR SAFETY

READ BEFORE

LIGHTING

WARNING: If you do not fol- low these instructions exactly, a fire or explosion may result caus- ing property damage, personal injury, or loss of life.

A.This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not try to light the burner by hand.

B.BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electric switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

•If you cannot reach your gas sup- plier, call the fire department.

C.Use only your hand to turn the handle on the equipment shutoff valve. Never use tools. If the handle will not turn by hand, don’t try to repair it. Call a qualified service tech- nician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been un- der water.

OPERATING

INSTRUCTIONS

WARNING: Always follow lighting instructions. Never at- tempt to light burner with a match or butane torch.

1.STOP! Read the safety information, column 1.

2.Set the thermostat to lowest setting.

3.Turn off all electric power to the furnace.

4.Turn equipment shutoff valve clock-

wise to OFF position (see Figure 18).

5.Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety in- formation, column 1. If you don’t smell gas, go to next step.

6.Turn equipment shutoff valve coun-

terclockwise to ON position (see Figure 18).

7.This furnace is equipped with an ig- nition device which automatically lights the burner. Do not try to light the burner by hand.

8.Plug in furnace.

9.Set thermostat to desired setting. If thermostat is set above room tem- perature, the blower will come on.

10.Allow approximately 45 seconds for ignition to occur. When ignition oc- curs, the glo-bar will stay on for a short period of time. The flame sens- ing probe will sense the burner flame and shut off glo-bar.

If ignition does not occur within 22 seconds, the ignition control will at- tempt to light burner three times. This will take about two minutes. If ignition does not occur, the ignition control will lock out the glo-bar and valve circuit. Air in the gas line or a short gas interruption will prevent furnace from igniting. If this hap- pens, turn thermostat off and wait 5 minutes. Turn the thermostat back on. The furnace will try to ignite again.

11.If the furnace still does not ignite, fol- low instructions To Turn Off Gas to Furnace, page 13. Call a qualified service person. Do not attempt to re- start furnace.

On Position

Off Position

Figure 18 - Equipment Shutoff Valve

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