Gas Connections - Modine HD Serie Manuel D'installation Et D'entretien

InsTAllATIon - venTIng / gAs ConneCTIons
figure 14.1
Common venting into double Wall B vent
FLASHING
USE LISTED
THIMBLE
TYPE B DOUBLE WALL
COMMON VENT
USE THIMBLE
THROUGH CELLING
TYPE B DOUBLE WALL
VENT CONNECTOR
UPWARD SLOPE VENT
1/4" PER FOOT TOWARDS DRIP LEG.
CATEGORY I APPLIANCE
figure 14.3
Common venting into manifold
USE THIMBLE
THROUGH CELLING
UPWARD
SLOPE VENT
1/4" PER FOOT
TOWARDS DRIP LEG.
HIDDEN VENT
UNIT HEATER
TEE WITH DRIP LEG AND
CLEANOUT CAP RECOMENDED
CATEGORY I CATEGORY I
APPLIANCE
APPLIANCE
14
LISTED TERMINAL
VENT HEIGHT
TEE WITH DRIP
LEG AND
CLEANOUT CAP
RECOMENDED
12" MIN.
REC.
3' MAX
Lm
figure 14.2
Common venting into masonry Chimney
TYPE B DOUBLE WALL
VENT CONNECTOR
UPWARD SLOPE VENT
1/4" PER FOOT TOWARDS CHIMNEY
CATEGORY I APPLIANCE

gAs ConneCTIons

WARNING
1. All field gas piping must be pressure/leak tested prior to
operation. Never use an open flame. Use a soap solution
or equilavent for testing.
2. Gas pressure to appliance controls must never exceed 14"
W.C. (1/2 psi).
3. To reduce the opportunity for condensation, the minimum sea
level input to the appliance, as indicated on the serial plate,
must not be less than 5% below the rated input, or 5% below the
minimum rated input of dual rated units.
1. Purging of air from gas lines should be performed as
described in ANSI Z223.1 - latest edition "National Fuel
Gas Code", or in Canada CSA-B149 codes.
2. When leak testing the gas supply piping system, the
appliance and its combination gas control must be isolated
during any pressure testing in excess of 14" W.C. (1/2 psi).
3. The unit should be isolated from the gas supply piping
system by closing its field installed manual shut-off
valve.This manual shut-off valve should be located within
6' of the heater.
4. Turn off all gas before installing appliance.
6-583.2
FLASHING
MASONRY CHIMNEY
(COMMON VENT)
3' MAX
cAUTION
CHIMNEY
HEIGHT