Trane Gas Unit Heaters Wartungshandbuch

GLND-SVX01B-EN

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All venting installations shall be in accordance with the 
latest edition of Part 7, venting of Equipment of the 
National Fuel Gas Code, ANSI Z223.1, or applicable 
provisions of local building codes for power vented units. 
Also see 

for additional Canadian installations.

Horizontal vent systems must be in compliance with UL 
1738 for installations in the United States, and ULS636 for 
installations in Canada.

Power vented units are designed to be used with single 
wall vent pipe utilizing horizontal or vertical venting 
arrangements. These arrangements must terminate 
external to the building using either a single wall or 
double wall vent. See 

 through 

 

for special installation requirements regarding these 

venting conditions.

If double wall venting (other than Type B; see preceding 
warning) is used, components which are UL Listed and 
approved for Category III positive pressure venting 
systems MUST be used.

A Briedart Type L, Field Starkap or an equivalent vent cap 
must be supplied by the customer for each power vented 
unit. The vent pipe diameter MUST be as specified in 

(“D” Dia. Flue Opening). A reducer must be 

field installed for 100 through 175 MBh Unit Sizes. All 300 
through 400 MBh Unit sizes are factory equipped with the 
required flue increaser. Refer to 

 through 

 

for additional requirements.

The venting system for these appliances shall terminate at 
least four feet (1.2 m) below, four feet (1.2 m) horizontal 
from, or one foot (0.3 m) above any door, window, or 
gravity air inlet into any building.

Through the wall vents for these appliances shall NOT 
terminate over public walkways, or over an area where 
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 be five feet (1.5 m) 
minimum and must not exceed 50 feet (15.2 m). 
Equivalent length is the total length of straight sections 
PLUS 15 feet (4.6 m) for each 90 degree elbow, eight feet 
(2.4 m) for each 45 degree elbow, and 10 feet (3.0 m) for 
the vent cap.

Maintain six inches (152 mm) between vent pipe and 
combustible materials. A minimum of 12  inches (305  mm) 
of straight pipe is required from the venter outlet before 
installing an elbow in the vent system. Never attach an 
elbow directly to the venter (see preceding warning).

Use single wall pipe constructed of 26 gauge galvanized 
steel or material of equivalent durability and corrosion 
resistance for the vent system. For installation in Canada, 
use pipe constructed from 0.025-inch thick aluminum or 
0.018-inch thick stainless steel.

Any run of single wall vent pipe passing through an 
unheated space must be insulated with an insulation 
suitable to 550°F.