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START-UP
Pre Start-up
Filling System (Heating Boilers)
Fill system with water. Purge all air from the system.
Lower system pressure. Open valves for normal sys-
tem operation, and fill system through feed pressure.
Manually open air vent on the compression tank until
water appears, then close vent.
Air Purge (Domestic Hot Water
Heaters)
Purge all air from system before lighting heater. This
can be normally accomplished by opening a down-
stream valve.
Venting System Inspection
1. Check all vent pipe connections and flue pipe ma-
terial.
2. Make sure vent terminations are installed per code
and are clear of all debris or blockage.
For Your Safety
This appliance has a direct spark igniter. It is equipped
with an ignition device which automatically lights the
burners. Do not try to light the burners by hand.
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
BEFORE OPERATING, smell all around the appliance
area for gas. Be sure to smell near 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 electrical switch; do not use any
telephone in your building.
• Immediately call your gas supplier from a neigh-
bor’s telephone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the fire
department.
• Use only your hand to push in or turn the gas con-
trol knob. Never use tools. If the knob will not turn
by hand, do not try to repair it, call a qualified serv-
ice technician. Forced or attempted repair may
result in a fire or explosion.
• 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 under water.
• Check around unit for debris and remove com-
bustible products, i.e. gasoline, etc.
Pre Start-up Check
1. Verify the heater is filled with water.
2. Check system piping for leaks. If found, repair
immediately.
3. Vent air from system. Air in system can interfere
with water circulation.
4. Purge air from gas line to boiler.
Initial Start-up
Required tools
• (1) 12-0-12 (24” scale) U-tube manometer
• (2) 6-0-6 (12” scale) U-tube manometer
• Screwdrivers (assorted sizes and shapes)
• (1) Crescent wrench (8” or 10”)
• (1) Multi-meter
(Metric Allen wrenches will be required for servicing
the gas valve, but not during start-up)
NOTE: Digital manometers are not recommended.
CAUTION: An air vent should be installed at the
highest point in the system for proper operation. If
water piping is located higher than the boiler, it
should be relocated to the highest point in the
installed system.
NOTE: The wiring diagrams in this manual show all
s
tandard options. Refer to the large wiring diagram
provided with your boiler for options installed on your
specific unit(s).