System Start-Up; Vii. System Start-Up - New Yorker CLASSIC CG-A SERIES Installation, Operating And Service Instructions

VII. System Start-up

Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler when
the boiler underwent tests specified in American National Standard for Gas-Fired Low-Pressure Steam and Hot Water
Boilers, ANSI Z21.13.
A
. Main Burner Check - Check main burners to see that
they were not dislodged during shipment. Rear of
burners should be in the vertical slots in the rear of
burner tray and the front of the burners should be
seated completely on the orifices.
B.
Initial start -
1. 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).
a. Close isolation valve in boiler supply piping.
b. Isolate all circuits by closing zone valves or
balancing valves.
c. Attach a hose to bib cock located just below
isolation valve in boiler supply piping. (Note -
Terminate hose in five gallon bucket, at a suitable
floor drain, or outdoor area).
d. Starting with one circuit, open zone valve.
e. Open bib cock.
f. Open fill valve (Make-up water line should be
located directly above isolation valve in boiler
supply piping).
g. Allow water to overflow from bucket until
discharge from hose is bubble free for 30
seconds.
h. Open zone valve to the second zone to be
purged, then close the first. Repeat this step
until all zones have been purged, but always
have one zone open. At completion, open all
zone valves.
i. Close bib cock, 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. Leave globe valve
open).
j. Open isolation valve in boiler supply piping.
k. Remove hose from bib cock.
2. Turn ROOM THERMOSTAT to lowest setting.
3. Be sure that gas to pilot and main burners has been
off for at least five minutes and vent damper has
been in the open position.
4. Turn "OFF" the electric switch serving boiler.
5. Open valve on main gas line at meter.
6. PURGE AIR FROM GAS PIPING. This procedure will
vary with ignition system furnished but in all cases
adequate ventilation must be provided and no
smoking or open flame permitted.
a. Standing Pilot Models, see Figure 6.
i. Keep electric switch "OFF".
ii. Open Manual Shut-off Valve upstream of
Combination Gas Valve.
iii. Disconnect Pilot Tubing at gas valve (Purge
must not be into combustion chamber).
iv. 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.
v. Reconnect pilot tubing and check pipe and
fittings from meter to combination Gas Valve
for leaks using soap solution or other
approved method.
b. Intermittent Ignition Models, see Figure 7.
i. Turn "ON" electric switch serving boiler.
ii. Open Manual Shut-off Valve upstream of
Combination Gas Valve.
iii. Loosen or remove Inlet Pressure Tap Plug in
Combination Gas Valve and when purging is
complete, tighten or replace plug. (See Figure
14).
iv. Check pipe and fittings from meter to
Combination Gas Valve using soap solution
or other approved methods.
C A U T O I N
v. Test gas piping and connections between
Combination Gas Valve and manifold,
orifices, and pilot piping for leaks after boiler
is operating. Use soap solution or other
approved method.
C.
Instructions to Put the Boiler in Operation. See Figure
15 for Electronic Intermittent Ignition System (EI). See
Figure 16 for Continuous Ignition System (standing
pilot).
Figure 14: Top View of Honeywell Gas Valves
15