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.
I.
Remove regulator
cover screw on top of gas valve, and insert an appropriate
screwdriver
into adjustment
screw.
II.
Turn adjustment
screw clockwise
to increase input rate, or counter clockwise
to
decrease
input rate.
III.
Replace cover screw, or cover hole temporarily
with your finger to check new
manifold
pressure
setting.
Do not set manifold pressure
lower than 2.0 inches w.c.
or higher than 3.0 inches w.c. when adjusting
input rate.
IV.
Measure
new input rate (cover screw must be installed).
Repeat steps I.-IV. until
the input rate is within +/-2% of the nameplate
input rating.
V.
If the actual input rate can not be set to within 2 % of the correct input rating by
adjusting
manifold
pressure,
a change in gas orifice size is required.
Consult the
boiler manufacturer
for information
on correct orifice sizing. The specific gravity
(G) and the higher heating value (HHV) of the local natural gas must be obtained
from the local gas utility in order to determine
the proper orifice size.
f.
After adjusting
input rate, turn boiler off, remove manometer
or pressure
gauge, reinstall
1/8" plug on gas valve.
Turn boiler on.
Restore all gas appliances
that may have been shut off (while measuring
boiler input rate) to
normal operating
conditions.
J. SET THERMOSTAT
TO DESIRED
ROOM TEMPERATURE
Observe
several operating
cycles to verify proper operation.
I_ REVIEW
ALL INSTRUCTIONS
Review all instructions
shipped with this boiler with owner or maintenance
person.
Instructions
must be affixed on or adjacent to the boiler.
L. COMPLETE
AND SIGN THE INSTALLATION
AND CHECK-OUT
CERTIFICATE
ON THE
FOLLOWING
PAGE.
41
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