Trane Gas Unit Heaters Wartungshandbuch

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.

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.