GBT A2-035, Installation & Operating Instructions Manual

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Follow these instructions exactly. A fire or explosion may result, potentially causing
personal injury, loss of life and property damage.
Do not use this appliance if any part has been flooded or heavily sprayed with water.
Immediately call a qualified service technician to inspect the controls and replace any
part that has been damaged by water.
PRE-START CHECKLIST
Before starting the boiler, review the following:
•
Is the unit properly sized for the application?
•
Is the gas supply properly sized and installed?
•
Is the vent system properly installed?
•
Is the combustion and ventilation air adequate?
•
Is the water system properly installed and filled with water?
•
Is the proper operation understood and all instructions followed?
This appliance is equipped with an ignition device, which automatically lights the
burner. DO NOT TRY TO LIGHT THE BURNER BY HAND.
FILL THE SYSTEM WITH WATER.
Fill the system with water and purge all air. Trapped air can prevent proper water circulation. Check the water
piping system for leaks and if found, repair immediately.
PURGE AIR FROM GAS LINES
For a new installation, or if the gas lines feeding the heater/boiler were opened to the atmosphere during
installation or service, air in the gas lines must be purged before operating the unit.
Before purging gas lines, ensure electrical power is turned off to the heater/boiler AND ALL OTHER
APPLIANCES IN THE VICINITY OR ROOM. TURN OFF GAS TO ALL APPLIANCES IN THE VICINITY OR
ROOM.
Provide ventilation from the area around the heater/boiler to the outdoors, preferably using
a fan or blower.
Loosen the pipe union or fitting upstream and adjacent to the heater/boiler. Slowly, partially open the manual
gas valve installed upstream of the loosened union or connection. Allow the trapped air to exit the gas piping
until the smell of gas is noticed. Close the manual gas valve and reconnect the pipe union or fitting. Wait at
least 15 minutes before turning electrical power back and/or gas back on to the other appliances, and only after
you are sure purged gases have dissipated.
PREPARATION
1. Ensure the manual gas valve upstream of the heater/boiler is CLOSED .
2. For A2-035 and A2-050 models, ensure the main regulating gas valve is closed.
Before turning on the power to this appliance smell all around the appliance for gas. Be sure to smell
next to the floor because some gas is heavier than air and will collect near the floor.
START-UP & OPERATION