Warning, Caution – Bryant 355CAV User Manual

Page 28

FIRE AND EXPLOSION HAZARD
Failure to follow this warning could result in personal

injury, death, or property damage.
Solvent cements are combustible. Keep away from heat,

sparks, and open flame. Use only in well ventilated areas.

Avoid breathing in vapor or allowing contact with skin or

eyes.

WARNING

In Canada, construct all combustion--air and vent pipes for this unit

of CSA or ULC listed schedule--40 PVC, PVC--DWV or
ABSDWV pipe and pipe cement. SDR pipe is NOT approved in

Canada.

CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal

injury, death, or property damage.
All combustion--air and vent pipes must be airtight and

watertight. Pipes must also terminate exactly as shown in

Fig. 36 for direct vent (2--pipe) system or Fig. 37 for

ventilated combustion air option.

WARNING

An abandoned masonry chimney may be used as a raceway for

properly

insulated

and

supported

combustion--air (when

applicable) and vent pipes. Each furnace must have its own set of

combustion--air and vent pipes and be terminated individually, as
shown in Fig. 36 for Direct Vent (2--Pipe) system or Fig. 37 for

ventilated combustion air option.
A furnace shall not be connected to a chimney flue serving a

separate appliance designed to burn solid fuel.
Other gas appliances with their own venting system may also use
the abandoned chimney as a raceway providing it is permitted by

local code, the current edition of the National Fuel Gas Code and
the vent or liner manufacturer’s installation instructions. Care must

be taken to prevent the exhaust gases from one appliance from

contaminating the combustion air of other gas appliances. Do not
take combustion air from inside the chimney when using the

Ventilated Combustion Air option.

UNIT MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent unit

operation.
When vent pipe is exposed to temperatures below freezing,

such as when it passes through an unheated space or when a

chimney is used as a raceway, pipe must be insulated as

shown in Table 6 with Armaflex--type insulation.

CAUTION

Furnace combustion air and vent pipe connections are sized for 2--
in. pipe. Any pipe size change should be made outside furnace

casing in vertical pipe. The transition has to be made as close to the
furnace as reasonably possible. (See Fig. 38.)

355C