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GAS COMBITHERM — INSTALLATION MANUAL #MN-28676
PG. 17
®
COMBITHERM
GAS SUPPLY & INSTALLATION REQUIREMENTS
Remove any tape or
compound residue
on all external
thread connections
before proceeding.
Use an approved gas
pipe sealant at all
external threaded
connections, Gas
piping used on gas
connections must avoid sharp bends that may restrict
the flow of gas to the appliance. If the connected
pressure exceeds 14.0" W.C. (3.5 kPa), a step-down
regulator is required to be supplied by the
owner/operator.
Close the individual manual shut-off valve to
isolate the appliance from the gas supply piping
system during any pressure testing at test pressures
equal to or less than
1
/
2
psig. (3,4 kPa). The
appliance and individual shut-off valve must be
disconnected from the gas supply piping system
during any pressure testing at pressures in excess of
1
/
2
" psig. (3,4 kPa).
In the U.S.A., installation must conform to local
codes or, in the absence of local codes, with the
current edition of the National Fuel Gas Code,
NFPA-54 and ANSI Z83.11a CSA 1.8a 2004 (or
latest edition). In Canada, installation must be in
accordance with local codes, CAN/CGA-B149.1,
Installation for Natural Gas Burning Appliances
and Equipment (latest edition) or CAN/CGA-
B149.2 Installation for Propane Burning
Appliances and Equipment (latest edition).
The inlet supply line must be properly sized to
accommodate all individual appliances
simultaneously used on the same line but must
never be smaller than
3
/
4
" NPT.
INCORRECT CORRECT
A
B
C
D
E
F
G
H
GAS INTAKE
A-G Installation elbow
B Wall Valve
C-D Three-piece union fitting
(minimum 1 per installation)
E-F End connector for the flexible tube
H Marking line
CONNECTON
D A N G E R
Installation, air adjustment and/or
s
ervice work must be in accordance
with all local codes and must be
performed by a certified service
technician qualified to work on
gas appliances.
D A N G E R
DO NOT store or use gasoline or other
flammable vapors or liquids in the
vicinity of this or any other appliance.
D A N G E R
NE PAS entreposer ni utiliser
d'essence ou d'autres vapeurs ou
liquides inflammables à proximité de
cet appareil ou de tout autre appareil.