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VII. System Start-Up
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Safe operation and other performance criteria were
met with gas manifold and control assembly provided
on boiler when boiler underwent tests specified in
America17 NatiolTal StalTdardfor Gas-Fired Lou,-
Pressure Steam alTdHot Water Boilers, ANSI Z21.13.
Verify that the venting, water piping, gas piping and
electrical system are installed properly. Refer to
installation instructions contained in this manual.
Confirm all electrical, water and gas supplies are turned
off at the source and that vent is clear of obstructions.
Confirm that all manual shut-off gas valves between the
boiler and gas source are closed.
Completely read, understand and follow all
instructions in this manual before attempting
start up.
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FILL ENTIRE HEATING SYSTEM WITH WATER
and vent air from system. Use the following procedure
on a Series Loop or multi-zoned system installed as per
Figure 7 or 8 to remove air from system when filling.
Repeat this step until all zones have been purged. At
completion, open all zone valves or shut-off valves.
9. Close bib, continue filling the system until the
pressure gauge reads 12 psi. Close fill valve.
(Note - If make-up water line is equipped with
pressure reducing valve, system will automatically
fill to 12 psi. Follow fill valve lnanu_acturer's
instructions).
10. Open isolation valve in boiler supply piping.
11. Remove hose from bib.
F.
Confirm that the boiler and system have no water
leaks.
G. Prepare to check operation.
1. Obtain gas heating value (in Btu per cubic foot)
from gas supplier.
2. Connect manometer to pressure tap on gas valve.
Use 1/8 NPT tapping provided.
See Figure 12.
The maximum operating pressure of this boiler
is 30 psig. Never exceed this pressure.
Do not
plug or change pressure relief valve.
7.
8.
1. Close full port ball valve in boiler supply piping.
2. Isolate all zones by closing zone valves or shut-off
valves in supply and return of each zone(s).
3. Attach a hose to the vertical bib located prior to
the full port ball valve in the system supply piping.
(Note - Terminate hose in five gallon bucket at a
suitable floor drain or outdoor area).
4. Starting with one circuit at a time, open zone valve
or shut-off valve in system supply and return piping.
5. Open bib.
6. Open fill valve (Make-up water line should be
located directly after full port ball valve in system
supply piping between air scoop and expansion
tank).
Allow water to overflow from bucket until discharge
from hose is bubble free for 30 seconds.
Close the opened zone valve or shut-off valve for the
zone being purged of air, then open the zone valve
or shut-off valve for the next zone to be purged.
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3.
4.
5.
Figure 12: Gas Valve Pressure Tap
Temporarily turn off all other gas-fired appliances.
Turn on gas supply to the boiler gas piping.
Confirm that the supply pressure to the gas valve is
14 in. w.c. or less. Refer to rating label on front of
boiler.
6.
7.
Open the field installed manual gas shut-off valve
located upstream of the gas valve on the boiler.
Using soap solution, or similar non-combustible
solution, electronic leak detector or other approved
method. Check that boiler gas piping valves, and
all other components are leak free. Eliminate any
leaks.
8. Purge gas line of air.
22
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