7
!
AVERTISSEMENT
RISQUE D’EXPLOSION ET D’INCENDIE
Le fait de ne pas suivre cet avertissement pourrait entraîner
des dommages corporels et / ou la mort.
Ne jamais examiner pour les fuites de gaz avec une flamme
vive. Utilisez plutôt un savon fait specifiquement pour la
détection des fuites de gaz pour verifier tous les connections.
Un incendie ou une explosion peut entrainer des dommages
matériels, des blessures ou la mort.
Casings Wider Than 14 3/16-in/Vent Does Not Pass Between
Inducer and Burner Assembly
If the vent pipe does not pass between the inducer and burner
assembly, or the furnace is wider than a 14 3/16-in. wide casing.
The switch maybe installed as shown in
.
1. Remove Low Gas Pressure Switch (LGPS), brass street
tee, brass nipple and brass street 90
_
elbow from the gas
valve inlet pressure tap. See
.
Use pipe dope approved for use with Propane gas. DO NOT use
Teflon tape.
2. Apply pipe dope sparingly to the 1/8
−
in. (3 mm) NPT pipe
plug (provided in kit) and install in the 1/8
−
in (3 mm)
tapped inlet
−
pressure tap opening in the gas valve. DO
NOT over
−
tighten. Check for gas leaks after gas supply
has been turned on.
Figure 10
LGPS for casing wider than 14
−
3/16 and
vent does not pass between inducer and
burner assembly.
Brass Street 90
Brass Nipple
Low Gas Pressure Switch
Inlet Pressure Tap
Brass Street Tee
with plug
A170142
(Optional inlet
pressure
tap on some
models)
INSTALL MANIFOLD
1. Align the orifices in the manifold assembly with the support
rings on the end of the burner.
2. Insert the orifices in the support rings of the burners.
Manifold mounting tabs should fit flush against the burner
box.
If manifold does not fit flush against the burner box, the burners
are not fully seated forward. Remove the manifold and check
burner positioning in the burner box assembly.
3. Attach the green/yellow wire and ground terminal to one of
the manifold mounting screws. See
4. Install the remaining manifold mounting screws.
5. Connect the wires to the flame sensor and hot surface
igniter.
6. Connect the connector harness to gas valve.
7. Rewire unit low pressure switch (LPS) as follows:
a. Trace one of the orange wires previously disconnected
from the LGPS back to the NO terminals of the LPS.
b. Trace the other orange wire previously disconnected
from the LGPS back to its splice connection with the
yellow wire of the furnace wire harness. Disconnect
and discard this orange wire and the splice connection.
c. Connect the yellow wire of the furnace wire harness
(see “b” above) to the NO terminal of the LPS.
d. Refer to the furnace wiring diagram to ensure proper
location of wires.
Use only Propane-resistant pipe dope. DO NOT use Teflon tape.
8. Insert the gas pipe through the grommet in the casing.
Apply a thin layer of pipe dope to the threads of the pipe
and thread the pipe by into the gas valve.
Use a back-up wrench on the gas valve to prevent the valve from
rotating on the manifold or damaging the mounting to the burner
box.
9. With a back-up wrench on the inlet boss of the gas valve,
finish tightening the gas pipe to the gas valve.
10. Turn gas on at electric switch on gas valve.
CHECK INLET GAS PRESSURE
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
DO NOT operate furnace more than one minute to check inlet
gas pressure, as conversion is not complete at this time.
This kit is to be used only when inlet gas pressure is between
4.5
−
in. w.c. and 13.6
−
in. w.c..
1. On some models, remove 1/8-in. (3 mm) pipe plug from
pressure tap on the inlet end of gas valve and insert
pressure tap. Or, on some models, loosen set screw on
inlet tower pressure tap no more than one full turn with the
3/32
−
in. hex wrench.
2. Verify manometer is connected to inlet pressure tap on gas
valve. (See
3. Turn on furnace power supply.
4. Turn gas supply manual shutoff valve to ON position.
!
WARNING
FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Gas supply MUST be shut off before disconnecting electrical
power and proceeding with conversion.
!
WARNING
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position and install a
lockout tag. There may be more than one disconnect switch.
Lock out and tag switch with a suitable warning label. Verify
proper operation after servicing.
5. Turn furnace gas valve switch to ON position.
6. Jumper R
−
W thermostat connections on control.
7. When main burners ignite, confirm inlet gas pressure is
between 4.5
−
in. w.c. and 13.6
−
in. w.c.
8. Remove jumper across R
−
W thermostat connections to
terminate call for heat.
9. Turn furnace gas valve switch to OFF position.