48
6.
START-UP
NOTE:
The following steps must be performed by a
factory-trained technician.
6.1.
Pre Start-up
6.1.1. Filling System (Heating Boilers)
Fill system with water. Purge all air from the system.
Lower system pressure. Open valves for normal system
operation, and fill system through feed pressure. Manually
open air vent on the compression tank until water appears,
then close vent.
6.1.2.
Air Purge
Purge all air from system before heater operation. This
can normally be accomplished by opening a down-stream
valve.
A
A
CAUTION:
An air vent valve should be field-installed at
the highest point in the system for proper operation.
6.1.3. Venting System Inspection
1. Check all vent pipe connections and flue pipe
material.
2. Make sure vent terminations are installed per code
and are clear of all debris or blockage.
3. Ensure vent material has been inputted into VERSA
control.
6.1.4. Lighting Instructions/Warnings
For Your Safety
This appliance has a hot surface igniter. It is equipped
with an ignition device which automatically lights the
burners. Do not try to light the burners by hand.
A
A
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 neighbor’s
telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
• Use only your hand to turn the gas control valve
handle. Never use tools. If the handle will not turn
by hand, do not try to repair it; call a qualified service
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 combustible
products, i.e. gasoline, etc.
6.2.
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 heater.
6.3. Initial Start-up
6.3.1. 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
•
(1) Flue gas analyzer
(Metric Allen wrenches will be required for servicing the
gas valve, but not during start-up)
6.4.
Preparation
6.4.1.
Check Power Supply
With multi-meter at incoming power, check voltage
between:
Hot - Common (≈120 VAC)
Hot - Ground (≈120 VAC)
Common - Ground (< 1 VAC)
6.4.2. Attach Manometers to Measure
Pressures
NOTE:
Digital manometers are not recommended.
1. Turn off main gas valve.
2.
Attach (1) 12" scale manometer to an upstream
bleedle valve on the gas supply pipe to the heater
(Measure point “A” in
Figure 55
).
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