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II. Operating Instructions
1. MAIN BURNER CHECK - Check main burners to
see that they were not dislodged during shipment. Rear
of burners should be in the slots in the rear of burner
tray and the front of the burners should be seated
completely on the orices.
2. INITIAL START -
A. FILL ENTIRE HEATING SYSTEM WITH
WATER and vent air from system. Use the
following procedure on a Series Loop System
equipped with zone valves. (See Figure 3).
1. Close isolation valve in boiler supply piping.
2. Isolate all circuits by closing zone valves or
balancing valves.
3. Attach a hose to hose bib located just below
isolation valve in boiler supply piping. (Note -
Terminate hose in ve gallon bucket at a suitable
oor drain or outdoor area).
4. Starting with one circuit, open zone valve.
5. Open hose bib.
6. Open ll valve (Make-up water line should be
located directly above isolation valve in boiler
supply piping).
7. Allow water to overow from bucket until
discharge from hose is bubble free for 30
seconds.
8. Open zone valve to the second zone to be purged,
then close the rst. Repeat this step until all
zones have been purged, but always have one
zone open. At completion, open all zone valves.
9. Close hose bib, continue lling the system until
the pressure gauge reads 12 psi. Close ll valve.
(Note - If make-up water line is equipped with
pressure reducing valve, system will
automatically ll to 12 psi. Leave globe valve
open).
10. Open isolation valve in boiler supply piping.
11. Remove hose from hose bib.
B. Turn ROOM THERMOSTAT to lowest setting.
C. Be sure that gas to pilot and main burners has been
off for at least ve minutes and vent damper (if
used) has been in the open position.
D. Turn "OFF" the electric switch serving boiler.
E. Open valve on main gas line at meter.
F. PURGE AIR FROM GAS PIPING. This
procedure will vary with equipment furnished but in
all cases adequate ventilation must be provided
and no smoking or open ame permitted. To
determine which of the procedures outlined in
succeeding paragraphs is applicable, match sufx of
Figure 17: Schematic Pilot and Gas Piping
Continuous Ignition (Standing Pilot)
Figure 18: Schematic Pilot and Gas Piping
Electronic Ignition (EI)
boiler model found on Rating Label with paragraph
heading:
1. Standing Pilot Models (Sufx C):
a. Keep electric switch "OFF".
b. Open Manual Shut-off Valve upstream of
Combination Gas Valve.
c. Disconnect Pilot Tubing at gas valve (Purge
must not be into combustion chamber).
d. Turn Main Gas Knob on Combination Gas
Valve to "Pilot" Position. Depress and hold
in this position until purging is complete.
Turn Main Gas Knob to "off" position.
Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler when the
boiler underwent tests specied in American National Standard for Gas-Fired Low-Pressure Steam and Hot Water Boilers, ANSI
Z21.13b-1994.