Electrical Wiring - International comfort products C9MVX Installation Instructions Manual

The burner orifice part nos. are as follows:
Orifice Part #
41 1096942
43 1011377
45 1011353
47 1011378
49 1113202
55 1011354
Changing Orifices for High Altitude
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to this warning could result in personal
injury, death, and/or property damage.
Turn OFF electric power at disconnect, lockout,
and gas supply at manual valve in gas line and tag
switch with a suitable warning label when
installing orifices. Installation of orifices requires a
qualified service technician.
NOTE: Main burner orifices can be changed for high altitudes.
1. Disconnect gas line from gas valve.
2. Remove manifold from furnace.
3. Remove the orifices from the manifold and replace them
with properly sized orifices.
4. Tighten orifices so it is seated and gas tight. (See
Figure 33)
Figure 33
Changing Orifices
1.11" (28.2mm)
1.21" (30.8mm)
5. Reinstall manifold. Ensure burners do NOT bind on new
orifices.

Electrical Wiring

WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in
personal injury or death.
Turn OFF electrical power at fuse box or service
panel, lockout, and tag switch with a suitable
warning label, before making any electrical
connections and ensure a proper ground
connection is made before connecting line
voltage.
440 01 2024 04
Orifice Part #
42 1011351
44 1011352
46 1011744
48 1113201
54 1011376
56 1011355
Measure from face of ori-
fice to the back side of the
manifold.
Specifications are subject to change without notice.
Final Gas Piping Check
1. The furnace and the equipment shut off valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
1
of / " PSIG. Close the manual shut−off valve before testing
2
at such pressures.
2. The furnace must be isolated from the gas supply system by
closing the equipment shut off valve during any pressure
testing of the gas supply system at test pressure equal to or
1
less than / " PSI.
2
3. When installation is complete, test all pipe connections for
leaks with the gas pressure less than
valve.
4. Apply a commercial soap solution to all joints to test for
leaks. Correct any leaks indicated by bubbles.
5. Correct even the smallest leak at once.
6. Check for leaks at gas valve and orifice connections to the
burner manifold along with the pilot tube connections to the
valve and pilot assembly while the furnace is operating.
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 could result
causing property damage, personal injury and/or
loss of life.
AVERTISSEMENT
!
RISQUE D'INDENDIE OU D'EXPLOSION
Le non−respect des avertissements de sécurité
pourrait d'entrainer 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
spécifiquement pur la détection des fuites de gaz.
Un incendie ou une explosion peut entrainer des
dommages matériels, des blessures ou la mort.
Power Supply Wiring
The furnace MUST be electrically wired and grounded in
accordance with local codes, or in the absence of local codes with
the latest edition of The National Electric Code, ANSI NFPA 70
and/or The Canadian Electric Code CSA C22.1.
Field wiring connections must be made inside the furnace
connection box. A suitable strain relief should be used at the point
the wires exit the furnace casing.
NOTE: Furnace will not have normal operation is line polarity is
reversed. Check ALL field and control connections prior to
operation.
Copper conductors shall be used. Line voltage wires should
conform to temperature limitation of 35° C rise and be sized for the
1
/ " PSIG to the gas
2
fabriquée
37