Bryant 4-WAY MULTIPOISE TWO-STAGE CONDENSING GAS FURNACE 352AAV Instrucciones de operaciones descargar pdf (Pagina 32)

Table 7 – Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials (USA only*)

ASTM

SPECIFICATION

(MARKED ON

MATERIAL)

MATERIAL PIPE FITTINGS

SOLVENT CEMENT

AND PRIMERS

DESCRIPTION

D1527 ABS Pipe --- --- --- --- S c h e d u l e --- 4 0

D1785 PVC Pipe --- --- --- --- S c h e d u l e --- 4 0

D2235 For ABS --- --- --- --- Solvent C ement For ABS

D2241 PVC Pipe --- --- --- --- S D R --- 2 1 & S D R --- 2 6

D2466 PVC --- --- Fittings --- --- S c h e d u l e --- 4 0

D2468 ABS --- --- Fittings --- --- S c h e d u l e --- 4 0

D2564 For PVC --- --- --- --- Solvent Cement For PVC

D2661 ABS Pipe Fittings --- --- DWV at Schedule---40 IPS sizes

D2665 PVC Pipe Fittings --- --- DWV

F438 CPVC --- --- Fittings --- --- S c h e d u l e --- 4 0

F441 CPVC Pipe --- --- --- --- S c h e d u l e --- 4 0

F442 CPVC Pipe --- --- --- --- SDR

F493 For CPVC --- --- --- --- Solvent C ement For CPVC

F628 ABS Pipe --- --- --- ---

Cellular Core DWV at Schedule---40

IPS sizes

F656 For PVC --- --- --- --- Primer For PVC

F891 PVC Pipe --- --- --- --- Cellular Core Schedule---40 & DWV

*Refer to Page 1 for Canadian installations.

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could result in fire, property

damage, personal injury, or death. 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

ABS-DWV pipe and pipe cement. SDR pipe is NOT approved in

Canada.

In direct vent (2-pipe) systems, combustion air and vent pipes

must terminate together in same atmospheric pressure zone,

either through roof or sidewall (roof termination preferred), using

accessory termination kit. See Table 8 for required clearances.

In non-direct vent (1-pipe) system, vent pipe termination must be

installed with adequate clearances to building openings and

equipment to comply with national and local codes. See Table 9

for required clearances.

CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in property damage,

personal injury, or death.

All combustion-air and vent pipes must be airtight and

watertight. Pipes must also terminate exactly as shown in Fig.

44 for direct vent (2-pipe) system and Fig. 45 for non-direct

vent (1-pipe) system.

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

showninFig.44forDirectVent(2-Pipe)systemandFig.45for

Non-Direct Vent (1-Pipe) system.

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.

UNIT MAY NOT OPERATE

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 10 with Armaflex-type insulation.

CAUTION

Furnace combustion air and vent pipe connections are sized for

2-in. (51 mm) 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.

COMBUSTION AIR PIPE

General

Furnace combustion-air connection must be attached as shown in

Fig. 38. Combustion-air intake housing plug may need to be

relocated in some applications.

For Non-Direct Vent (1-Pipe) system, combustion-air must

terminate outside of furnace casing with 1 elbow. Orient elbow so

that its opening faces down for upflow or downflow applications.

Orient elbow so that its opening faces sideways (left or right) for

horizontal left or horizontal right applications. Maintain a 3-in

minimum clearance between the opening of the combustion-air

inlet pipe and any object.

352AAV

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Bryant 4-WAY MULTIPOISE TWO-STAGE CONDENSING GAS FURNACE 352AAV Instrucciones de operaciones Pagina 32

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