Bosch GWH C 800 ES - Page 20

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Installation instructions
Below are approved examples of vertical and hor-
izontal venting installations
Fig. 26 Vertical venting system (sealed combustion)
Fig. 27 Vertical parallel venting system (sealed
combustion)
Fig. 28 Vertical venting system (room air only)
Warning: Use leaf and debris
protection screens at the end of vent
and inlet pipes.
INTAKE
EXHAUST
COMBUSTION
AIR
MAINTAIN 12 IN. (18 IN. FOR CANADA)
MINIMUM CLEARANCE ABOVE
HIGHEST ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24 IN. ABOVE ROOF.
VENT
ROOF BOOT/
FLASHING (FIELD
SUPPLIED
DRAIN TEE
12” (300 mm) OVER
MAXIMUM SNOW
LEVEL OR 24”
(600 MM) WHICHEVER
IS GREATER
INTAKE
EXHAUST
12” (300 mm) OVER
MAXIMUM SNOW
LEVEL OR 24”
(600 MM)
WHICHEVER
IS GREATER
DRAIN TEE
INTAKE
EXHAUST
≥ 3 ft. Min.
12” (300 mm) OVER
MAXIMUM SNOW LEVEL
OR 24” (600 MM)
WHICHEVER IS GREATER
DRAIN TEE