Trane Gas Unit Heaters 维护手册

30

 GTND-SVX01B-EN

Vent pipe diameter

Unit sizes 30–120: See 

12” min.

(305 mm min.)

To prevent 

building material 

degradation from 

flue gases.

Pitch flue pipe down toward 

outlet 1/4” per foot 

(21 mm/m) of run to allow 

for condensate drainage

Unit sizes 30–120: 3 feet (0.91 m) 

plus maximum snow depth for 

area above grade

Unit sizes 150–400: 12 inches 

(305 mm) plus maximum snow 

depth for area above grade

3’-0” min.

(0.9 m min.)

6’-0” min.

(1.8 m min.)

Adjacent 

building

Building 

overhang

Approved 

vent cap 

(see instructions)

Flashing

Fiberglass 

insulation 

min. 2” thick 

(51 mm min.)

Flue 

dia.

2” min.

(51 mm min.)

all around

2” clearance 

(51 mm) 

thimble

Wall

Unit sizes 30–120: 2 feet (0.609 m) 

plus maximum snow depth for area

Unit sizes 150–400: 6 inches (152 mm) 

plus maximum snow depth for area

All unit sizes: Vertical pipe extension 

over 12” (305 mm) must be insulated

6’-0” min.

(1.8 m min.)

Adjacent building

Roof pitched 

from 0° to 45°

Approved 

vent cap 

(see instructions)

Roof

Flashing

Fiberglass 

insulation 

min. 2” thick 

(51 mm min.)

Flue 

dia.

2” min.

(51 mm min.)

all around

2” clearance 

(51 mm) 

thimble

Vent pipe diameter

Unit sizes 30–120: See 

Unit sizes 150–400: See