Hearth and Home Technologies GBST4336I Vent Information and Diagrams, A. Vent Guidelines

7 Vent Information and Diagrams

A. Vent Guidelines

WARNING! Fire Risk/Asphyxiation! This appliance requires the specified pipe for operation. Incorrect pipe may cause spill- age, condensation and overheating.

These models require the following size B-Vent double wall.

Models	Pipe Size
GBST4336I	5 inches
GBFL4136I	5 inches

•Follow pipe manufacturer’s installation guidelines when installing the appliance.

WARNING! Fire Risk/Explosion/Asphyxiation! DO NOT connect this gas appliance to a chimney flue serving a separate solid-fuel or gas burning appliance.

•Vent this appliance directly outside.

•Use separate vent system for this appliance.

May impair safe operation of this appliance or other appli- ances connected to the flue.

B. Vent System Configuration

CAUTION! Risk of Fire! ALL vent configuration specifi- cations MUST be followed. This product is tested and listed to these specifications. Appliance performance will suffer if specifications are not followed.

Rise to Run Ratio = 2:1

Maximum Total Horizontal Run = 15 ft.

Minimum Total Vertical Rise for 0-2 Elbows = 12 ft. Maximum Total Vertical Rise = 50 ft.

Maximum Number of Elbows: Four 90º or six 45º

Minimum Total Vertical Rise for Four 90º or six 45º Elbows=16 ft.

See Figures 7.1, 7.2, 7.3.

WARNING! Risk of Fire or Explosion! Insulation and oth- er combustibles must not infringe on clearances.

MINIMUM CLEARANCES

ARE PER VENT

MANUFACTURER’S

SPECIFICATIONS

METAL

PLUMBER’S

STRAP

12 FEET

MINIMUM

50 FEET

MAXIMUM

VENT SUPPORTS ARE PER

VENT MANUFACTURER’S

SPECIFICATIONS

Figure 7.1 Minimum Total Vertical Rise

VENT SUPPORTS
ARE PER VENT	METAL
MANUFACTURER'S
SPECIFICATIONS.	PLUMBERS' STRAP
MAXIMUM HORIZONTAL RUN IS 50%
OF VERTICAL. HORIZONTAL RUN
CANNOT BE MORE THAN 15 FT.
Figure 7.2 Rise to Run Ratio
	MAXIMUM
	HORIZONTAL
	15 FEET

MINIMUM VERTICAL 9 FEET

•ALWAYS maintain specified clearances around venting and firestop systems.

•Install firestops as specified.

Failure to keep insulation or other material away from vent pipe may cause fire.

45DEGREES ELBOW

90DEGREES ELBOW

OFFSETS EXCEEDING 45 DEGREES ADAPT HORIZONTAL LIMITATIONS

Note: Maximum horizontal distance is 50% vertical vent height.

Figure 7.3 Proper Use of Elbows

Heatilator • GBST4336I, GBFL4136I • 2135-900 Rev. D • 11/08 23