Allied 80G2UH-V, Installation Instructions Manual

507335-01

Page 30 of  44

Issue 1624

Start-Up

For Your Safety, Read Before Operating

Do not use this furnace if any part has been under 

water.  Immediately call a licensed professional service 

technician (or equivalent) to inspect the furnace and 

to replace any part of the control system and any gas 

control which has been under water.

  WARNING

Gas Valve Operation (Figures 33 and 34)

1.  STOP!  Read the safety information at the beginning of 

this section.

2.  Set the thermostat to the lowest setting.

3.  Turn OFF all electrical power to the unit.

4.  This furnace is equipped with an ignition device which 

automatically lights the burners.  Do 

not

 try to light the 

burners by hand.

5.  Remove the heating compartment access panel.

6.  Move gas valve switch to 

OFF

 position.  Do 

not

  force.  

See Figure 33 or 34.

7.  Wait five (5) minutes to clear out any gas.  If you then 

smell gas, 

STOP!

 Immediately call your gas supplier 

from  a  neighbor’s  phone.    Follow  the  gas  supplier’s 

instructions.  If you do not smell gas go to next step.

BEFORE LIGHTING 

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.

The gas valve on this unit is equipped with a gas control 

switch.  Use only your hand to move the switch.  Never use 

tools.  If the switch will not turn or if the control switch will 

not move by hand, do not try to repair it.

Placing the furnace into operation:

These units are equipped with an automatic ignition system.  

Do not attempt to manually light burners on these furnaces.  

Each  time  the  thermostat  calls  for  heat,  the  burners  will 

automatically light.  The ignitor does not get hot when there 

is no call for heat on units with an automatic  ignition system.

Before attempting to perform any service or maintenance, 

turn the electrical power to unit OFF at disconnect switch.

 CAUTION

If you do not follow these instructions exactly, a fire or 

explosion may result causing property damage, personal 

injury, or loss of life.

 WARNING

If overheating occurs or if gas supply fails to shut off, 

shut off the manual gas valve to the appliance before 

shutting off electrical supply.

  WARNING

During  blower  operation,  the  ECM  motor  emits 

energy that may interfere with pacemaker operation.  

Interference is reduced by both the sheet metal cabinet 

and distance.

  WARNING

8.  Move gas valve switch to

 ON 

position.  Do 

not

  force.  

See Figure 33 or 34.

9.  Replace the heating compartment access panel.

10. Turn 

ON

 all electrical power to the unit.

11.  Set the thermostat to desired setting.

NOTE:

  When unit is initially started, steps 1 through 11 may 

need to be repeated to purge air from gas line.

White Rodgers Gas Valve

Shown in 

ON

 position.

Figure 33

Figure 34

Shown in 

ON

 position.

Honeywell Gas Valve