Trane Gas Unit Heaters Manuel d'installation télécharger pdf (Page 20)

20 GBNE-SVX001A-EN

Horizontal venting arrangements are designed to be used

with single wall vent pipe. Horizontal venting arrangements

must terminate external to the building using UL 1738 Listed

single wall or double wall vent. For installations in Canada,

use corrosion resistant and gas-tight, listed vent pipe

conforming with local building codes, or in the absence of

local building codes, with current CSA-B149.1, Installation

Codes for Natural Gas Burning Appliances and Equipment or

CSA-B149.2, Installation Codes for Propane Gas Burning

Appliances and Equipment. See Figures 8, 9A and 10A for

special installation requirements regarding these venting

conditions.

If double wall venting is used, components which are UL

Listed and approved for Category III positive pressure venting

systems MUST be used.

A Breidert Type L, Fields Starkap, or equivalent vent cap must

be supplied by the customer for each power vented unit. The

vent pipe diameter MUST be as speciﬁed in Table 1. All unit

sizes are factory equipped with the required ﬂue size collar;

attach in place (if not mounted to outlet); refer to included

vent collar instruction sheet for additional requirements.

The vent terminal must be at least 12" (305mm) from the

exterior of the wall that it passes through to prevent

degradation of the building material by ﬂue gases.

Through the wall vent for these appliances shall NOT

terminate over public walkways, or over an area where the

condensate or vapor could create a nuisance or hazard or

could be detrimental to the operation of regulators, relief

valves, or other equipment.

The vent pipe equivalent length must not exceed 50' (15.2m).

Equivalent length is the total length of straight sections PLUS

10' (3.05m) for each 90° elbow and 4' (1.22m) for each 45° elbow.

Maintain clearance between the vent pipe and combustible

materials according to vent pipe manufacturers instructions

Seal all vent pipe joints and seams to prevent leakage. Use

General Electric RTV-108, Dow-Corning RTV-732 silicone

sealant or equivalent sealant with a temperature rating of 500°

F; or 3M #425 aluminum foil tape (or equivalent). The vent air

system must be installed to prevent collection of condensate.

Pitch horizontal pipes downward 1/4" per foot (21mm per

meter) toward the outlet for condensate drainage.

Horizontal portions of the venting systems shall be supported

at maximum intervals of 4' (1.2m) to prevent sagging (in

Canada, support at 3' (1m) maximum intervals).

Insulate single wall vent pipe exposed to cold air or running

through unheated areas.

Each unit must have an individual vent pipe and vent

terminal! Each unit MUST NOT be connected to other vent

systems or to a chimney.

Vent Systems Termination Clearance Requirements

Structure/Object

Minimum Clearance for Termination Locations

USA CANADA

Door, window, or gravity vent inlet;

combustion air inlet for other appliances

9 inch for 10,000 to 50,000 BTU/Hr input;

12 inch for input exceeding 50,000 BTU/Hr.

9 inch (230mm) for 10,000 to 50,000 BTU/Hr input;

12 inch (305mm) for input exceeding 50,000 BTU/Hr.

Forced air inlet within 10 feet

3 feet above 6 feet (1.8m)

Adjoining Building or parapet 6 feet 6 feet (1.8m)

Adjacent public walkways 7 feet above grade 7 feet (2.1m) above grade

Electric, gas meters

& regulators

4 feet horizontal

3 feet (0.9m) horizontally from meter/regulator asembly.

6 feet (1.8m), any direction, from a gas service regulator

vent outlet

Above grade level* 1 foot 1 foot (0.3m)

*Above maximum anticipated snow depth.

Table 7

Venting (continued)

Horizontally Vented Unit Heaters (Category III)

WARNING

Do not use Type B (double wall) vent internally within the build-

ing on horizontally vented power vented units! This can result

in death, serious injury or substantial property damage.

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Trane Gas Unit Heaters Manuel d'installation Page 20

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