Model 301GAS burner — Instruction manual
Carlin part number MN301GAS Rev. 11/24/14
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Where appliance instructions differ from this manual, follow the appliance instructions.
1. Prepare site • prepare burner • mount burner
Vent system
Inspect, repair and/or replace vent system
Do not install this burner unless you have verified the entire
vent system and the appliance are in good condition and
comply with all applicable codes. And . . .
The vent and chimney must be sized and constructed in
accordance with all applicable codes. If intended for use
with an oil burner as well, the vent system must comply
with relevant codes for both gas and oil firing.
The vent system must not be pressurized unless the vent
piping and vent system are designed accordingly. The vent
must provide draft at all times (negative pressure in vent).
Do not install or use an existing manual damper in the vent
connector or vent.
Do not connect the appliance vent connector to a chimney
or vent serving a fireplace, incinerator or solid-fuel-burning
apparatus.
In a cold climate, do not vent into a masonry chimney
that has one or more sides exposed to the outside.
Install a listed stainless steel liner to vent the flue
products.
A defective vent system could result in severe personal
injury, death or substantial property damage.
Vent/chimney sizing
• Follow all local codes when sizing the vent and chimney
.
• Refer to the appliance manufacturer’s manual, when available, for venting
recommendations.
Prepare vent/chimney
• Secure all metal vent joints with screws, following the vent manufacturer’s
instructions. Seal all joints in the vent system and chimney. Repair ma-
sonry chimney lining and repair all mortar joints as needed.
• Per ANSI Z21-8, install a double-acting barometric draft regulator in the
vent piping. (The damper must be located in the same space as the ap-
pliance.) Install a manual reset spill switch on the draft regulator outlet
per instructions. Wire the switch into the appliance limit circuit to shut
off the appliance/burner if sustained downdraft should occur. Refer to
the appliance manufacturer’s instruction manual for recommendations
regarding the need for a barometric draft regulator.
• Provide support for the vent piping. Do not rest the weight of any of the
vent piping on the appliance flue outlet.
Figure 1
Vent and vent connector installations, typical
