Gas Piping - Lennox ML180UHA Installation Instructions Manual

HORIZONTAL RIGHT POSITION
Side Vent Discharge
AIR
FLOW
FIGURE 20
VENT PIPE
(min. 6" length)
FLUE TRANSITION
COLLAR

Gas Piping

Refer to the current edition of the Australian Gas Instal­
lation Code (AS/NZS5601) for gas piping requirements
and gas pipe sizing tables.
Gas supply piping should not allow more than 125 Pa
(0.5"W.C.) drop in pressure between gas meter and unit.
Supply gas pipe must not be smaller than unit gas connec­
tion.
Pressure Switch
Flue Transition
Collector Box
VENT CONNECTION UPFLOW AND HORIZONTAL POSITION
"DISCONNECTED VENT"
WARNING
STICKER
Do not use an unlined masonry chimney as the flue
for this appliance.
"DISCONNECTED VENT"
WARNING
STICKER
VENT PIPE
(min. 6" length)
FIGURE 21
If a flexible gas connector is required or allowed by
the authority that has jurisdiction, black iron pipe
shall be installed at the gas valve and extend outside
the furnace cabinet. The flexible connector can then
be added between the black iron pipe and the gas
supply line.
Page 14
IMPORTANT
TRANSITION
COLLAR
CAUTION
FLUE