Armstrong Air Conditioning A97DSMV, Installation Instructions Manual

Page: 48 / 68

507029-03 Page 48 of 68 Issue 1622
Unit Start Up
FOR YOUR SAFETY READ BEFORE OPERATING
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
Priming Condensate Trap
The condensate trap should be primed with water prior to
startup to ensure proper condensate drainage. Either pour
10 fl. oz. (300 ml) of water into the trap, or follow these steps
to prime the trap:
1. Follow the lighting instructions to place the unit into
operation.
2. Set the thermostat to initiate a heating demand.
3. Allow the burners to fire for approximately 3 minutes.
4. Adjust the thermostate to deactivate the heating
demand.
5. Wait for the combustion air inducer to stop. Set the
thermostat to initiate a heating demand and again allow
the burners to fire for approximately 3 minutes.
6. Ajust the thermostat to deactivate the heating demand
and again wait for the combustion air inducer to stop.
At this point, the trap should be primed with sufficient
water to ensure proper condensate drain operation.
BEFORE PLACING THE UNIT INTO OPERATION
Smell all around the furnace 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 these units are equipped with a gas control
switch. Use only your hand to move the control switch.
Never use tools. If the switch will not move by hand, do
not try to repair it. Force or attempted repair may result in
a fire or explosion.
Placing the Furnace into Operation:
These units are equipped with an automatic ignition system.
Do not attempt to manually light burners on this furnace.
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 this ignition system.
Gas Valve Operation (Figure 48)
1.
STOP!
Read the safety information at the beginning of
this sectioin.
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 access panel.
6. Move the gas valve switch to the
OFF
position. See
Figure 48.
7. Wait five minutes to clear out any gas. If you then smell
gas,
STOP!
Immediately call the gas supplier from a
neighbor’s phone. Follow the gas supplier’s instruc-
tions. If you do not smell gas go to the next step.
8. Move gas valve switch to the
ON
position. See Figure
48.
DO Not
force.
Figure 48
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
WARNING
Do not use this furnace if any part has been underwater.
A flood damaged furnace is extremely dangerous.
Attempts to use the furnace can result in fire or explosion.
Immediately call a qualified service technician to inspect
the furnace and to replace all gas controls, control
system parts, and electrical parts that have been wet
or to replace the furnace, if deemed necessary.
WARNING
Danger of explosion. Can cause injury or
product or property damage. Should the
gas supply fail to shut off or if overheating
occurs, shut off the gas valve to the
furnace before shutting off the electrical
supply.
WARNING
Before attempting to perform any service or maintenance,
turn the electrical power to unit OFF at disconnect
switch.
CAUTION