Natural Gas to Propane Conversion Instructions

AG--KC019SNP--02 9
Specifications subject to change wi thout notice.
INSTALL LOW GAS PRESSURE
SWITCH
NOTE:Install the Low Gas Pressure Switch before installing the
manifold on the burner assembly.
There are two ways to mount the Low Gas Pressure Switch.
All 14 3/16 -in Casings or Vent Passed Between Inducer
Assembly and Burner Assembly
If the vent pipe passes between the inducer and burner
assembly, or the furnace is a 14 3/16-in. wide casing. The switch
maybeinstalledasshowninFigure 15:
Figure 15
LGPS for 14--3
/
16 Casing or when vent
passes between inducer and burner
assembly
Brass Street Tee
Brass Hex Nipple
Brass S treet 90
Low Gas Pressure Switch
Black Iron Street 90 Poi nting
Inlet Pressure Tap with Plug
A170141
(Optional inlet pressure
tap on some models)
1. Remove the 1/8-in. (3 mm) NPT pipe plug from the gas
valve inlet pressure tap.
NOTE:Use pipe dope approved for use with Propane Gas.
NOTE:Tighten all fittings and the Low Gas Pressure Switch with
a small wrench. Do not over-tighten, check for gas leaks after
gas supply has been turned on.
! WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury,
death, and/or property damage.
Never test for gas leaks with an open flame. Use a
commercially available soap solution made specifically for the
detection of leaks to check all connections. A fire or explosion
may result causing property damage, personal injury or loss of
life.
!
AVERTISSEMENT
RISQUE D’EXPLOSION ET D’INCENDIE
Le non-respect des avertissements de sécurité pourrait
d’entraîner des blessures graves, la mort ou des dommages
matériels.
Ne jamais utiliser une flamme nue por vérifier la présence des
fuites de gaz. Pour la vérification de tous les joints, utiliser
plutôt une solution savonneuse commerciale fabriquée
spécifiquement pur la détection des fuites de gaz. Un incendie
ou une explosion peut entraîner des dommages matériels,
des blessures ou la mort.
2. Apply pipe dope sparingly to the male threads of the
1/8-in. (3 mm) black iron street elbow. Install the street
elbow into the gas valve inlet pressure tap. One end of
the opening of the street elbow should be parallel with the
inlet boss on the gas valve. The other opening should be
pointing toward y ou.
3. Apply pipe dope sparingly to the male threads of the
1/8-in. (3 mm) brass street tee. Install the male end of the
street tee as shown in Figure 15. One opening on the
street tee should face you. The other opening should be
parallel with the inlet of the gas valve.
4. Apply pipe dope sparingly to the male threads of the
1/8-in. (3 mm) brass hex nipple. Install the hex nipple into
the open end of the brass street tee. (See Figure 15)The
hex nipple s hould be parallel with the boss on the gas
valve.
Figure 16
LGPS for casing wider than 14--3
/
16 and
vent does not pass between inducer and
burner assembly
Brass Street 90
Brass Ni pple
Low Gas Pressure Switch
Inlet Pressure Tap
Brass Street Tee
with plug
A170142
(Optional inlet
pressure
tap on some
models)
5. Install the open end of the brass street elbow on the end
of the hex nipple. Tighten the street elbow so the male
threads of the elbow point away from you.
6. Apply pipe dope sparingly to the male threads of the
1/8-in. (3 mm) brass street elbow. Install the Low Gas
Pressure Switch on the male threads of the 1/8-in. (3 mm)
street elbow. Tighten switch at hex fitting at base of
switch. Do not use switch body to tighten switch. Do not
over-tighten switch.
7. The remaining opening on the brass street tee is the new
gas valve inlet pressure tap (optional on some models).
Apply pipe dope to inlet pressure plug from gas valve and
install in open end of brass street tee.
8. Check all fittings for leaks after gas supply has been
turned on.
Casings Wider Than 14 3/16 -in/Vent Does Not Pass Between
Inducer and Burner Assembly
1. 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 may be installed as shown in
Figure 16):
2. Remove the 1/8-in. (3 mm) NPT pipe plug from the gas
valve inlet pressure tap.
NOTE:Use pipe dope approved for use with Propane Gas.
NOTE:Tighten all fittings and the Low Gas Pressure Switch with
a small wrench. Do not over-tighten, check for gas leaks after
gas supply has been turned on.
3. Apply pipe dope sparingly to the male threads of the
brass street elbow.
4. Install the brass street elbow in inlet pressure tap of the
gas valve
5. Tighten the brass street elbow with a small wrench so the
outlet faces to your left.
6. Apply pipe dope sparingly to the male threads of the 2--in.
brass nipple.
7. Install the brass nipple in the outlet of the brass street
elbow.
8. Locate the brass street tee in the kit. Orient the tee so the
male threads on the tee face away from you and the