Installation Guide

26
GAS SUPPLY PRESSURE MEASUREMENT
White-Rodgers Model 36J54 (Two-St age)
Figure 23A
Inlet
Pressure
Boss
Low Fire
Regulator
Adjust
M
a n
o m
e
t e r
M
a n o
m
e
t e r
H o
s e
High Fire Regulator
Adjust
Regulator
Vent
Outlet
Pressure Boss
Open to
Atmosphere
O
n
/
O f
f S w
i t c
h
H i g
h
F i r
e
C o
i
l
T e
r m i
n
a l
(
H I
)
C o
a x
i
a l
C o
i l
T e
r m i
n a
l (
M
)
Common
Terminal(C)
White-Rodgers Model 36J54 Connect ed to Manomet er
Figure 23B
Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.
INLET GAS SUPPLY PRESSURE
CAUTION
T O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE , THE
INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT
RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES
OPERATING .
The line pressure supplied to the gas valve must be within the
range specifi ed below. The supply pressure can be measured at
the gas valve inlet pressure tap or at a hose fi tting installed in
the gas piping drip leg. The supply pressure must be mea-
sured with the burners operating. To measure the gas supply
pressure, use the following procedure.
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Connect a calibrated water manometer (or appropriate gas
pressure gauge) at either the gas valve inlet pressure tap
or the gas piping drip leg. See White-Rodgers 36J54
gas valve (Figure 43B) fto locate the inlet pressure tap.
NOTE: If using the inlet pressure tap on the White-Rodgers
36J54 gas valve, then use the 36G/J Valve Pressure Check
Kit, Part No. 0151K00000S.
3. Turn ON the gas supply and operate the furnace and all
other gas consuming appliances on the same gas supply
line.
4. Measure furnace gas supply pressure with burners fi ring.
Supply pressure must be within the range specifi ed in the
Inlet Gas Supply Pressure table.
If supply pressure differs from table, make the necessary adjust-
ments to pressure regulator, gas piping size, etc., and/or consult
with local gas utility.
5. Turn OFF gas to furnace at the manual shutoff valve and
disconnect manometer. Reinstall plug before turning on
gas to furnace.
6. Turn OFF any unnecessary gas appliances stated in step
three.
GAS MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT
T O PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE , THE
GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING
PLATE . O NLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING
THE GAS VALVE PRESSURE REGULATOR .
CAUTION
Only small variations in gas pressure should be made by adjusting
the gas valve pressure regulator. The manifold pressure must be
measured with the burners operating. To measure and adjust the
manifold pressure, use the following procedure.
1. Turn OFF gas to furnace at the manual gas shutoff valve
external to the furnace.
2. Turn off all electrical power to the system.
3. Outlet pressure tap connections:
White-Rodgers 36J54 valve: Back outlet pressure
test screw (inlet/outlet pressure tap) out one turn
(counterclockwise, not more than one turn).
4. Attach a hose and manometer to outlet pressure tap .
5. Turn ON the gas supply.
NOTE: Follow this procedure to test the gas valve pressure
at 100% fi ring rate.
Run High Fire
NOTE: the Cool Cloud phone application be used to assist with
all functional tests. See the quick start guide section for details.
The furnace should be inspected by a qualifi ed installer, or
service agency at least once per year. This check should be
performed at the beginning of the heating season. This will
ensure that all furnace components are in proper working or-
der and that the heating system functions appropriately. Pay
particular attention to the following items. Repair or service
as necessary.