AERCO Esteem O&M Manual - Manual (Page 54)

48
Operation
TO TURN OFF GAS TO APPLIANCE
Operation
STOP!
• Read all the safety information on the preceding page. This appliance is equipped with an
ignition device which automatically lights the burner. DO NOT try to light the burner by hand.
1. Set room thermostat(s) to lowest setting.
2. Turn the external manual gas valve handle clockwise “CLOSE” (valve handle shall be per-
pendicular to gas piping).
3. Turn the service switch on the Esteem 399 Low NOx control panel OFF.
4. Remove the front jacket panel on the unit.
5. Turn the external manual gas valve handle counter-clockwise to “OPEN” gas supply
(valve handle shall be parallel to gas piping).
6. Wait five (5) minutes to clear out any gas.
• If after 5 minutes, you smell gas in the jacket enclosure or around the unit, STOP! Do not
touch any electrical equipment. Leave the building and call your gas supplier.
• If you don’t smell gas, go to the next step.
7. Turn the service switch on the Esteem 399 Low NOx control panel “ON”.
8. Set room thermostat(s) to desired setting(s).
9. Replace the front jacket panel.
10. Make sure the panel is seated firmly in place and all mounting screws are tightened.
WARNING
I
F THE UNIT WILL NOT OPERATE WITH A CALL FOR HEAT AND THE SYSTEM PIPING IS NOT HOT
,
FOLLOW THE INSTRUCTIONS
“T
O
T
URN
O
FF
G
AS TO
A
PPLIANCE
”,
BELOW AND CALL YOUR SERV
-
ICE TECHNICIAN OR GAS SUPPLIER
.
N
OTICE
The Esteem 399 Low NOx control panel display will show a sequence of numbers
(0,1,2,3,4,etc.) as the left digit. Sequence digit 3 or 4 indicates the boiler is fi ring.
Sequence digit 0 means there is no call for heat (all external thermostats are satis-
fi ed).
1. Set the room thermostat to lowest setting.
2. Turn the service switch on the Esteem 399 Low NOx control panel to “OFF”
3. Turn the external manual gas valve handle clockwise
to “CLOSE”
GF-125