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PRE-START-UP
Filling System-Heating Heaters
Fill system with water. Purge all air from the system
using purge valve sequence. After system is purged of
air, lower system pressure. Open valves for normal
system operation, fill system through feed pressure.
Manually open air vent on the compression tank until
water appears, then close vent.
Domestic Hotwater Heaters
Purge all air from system before lighting heater. This
can be normally be accomplished by opening a down-
stream valve.
Inspect Venting System:
1. Check all vent pipe connections and flue pipe
material.
2. Ensure vent terminations are installed per code
and are clear of all debris or blockage.
For Your Safety Read Before
Lighting
1. This appliance does have an intermittent pilot. It is
equipped with an ignition device which automati-
cally lights the pilot. DO NOT try to light the pilot or
burner by hand.
2. BEFORE OPERATING, smell all around the appli-
ance area for gas. Be sure to smell next to the
floor because some gas is heavier than air and will
settle on the floor.
3. 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.
4. 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.
5. 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.
6. Check around unit for debris and remove com-
bustible products, i.e. gasoline, etc.
Pre-Start-Up Check
1. Verify 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 up to heater.
INITIAL START-UP
Tools Needed
• One 12-0-12, 24” scale manometer
• Two 6-0-6, 12” scale manometers
• 7/16” open end wrench
• 1/2” open end wrench
• Screwdriver
• Volt meter
• 3/16” Allen wrench
Preparation for Start-Up
Check Power Supply
With volt meter at incoming power check voltage
between:
Hot - Common (~120 VAC)
Hot - Ground (~120 VAC)
Common - Ground (< 1 VAC)
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
WARNING: Do not turn on gas at this time.