Bosch GWH 2700 ES LP User Manual page 15

Fig. 17 Vertical venting installation (twin pipe penetra-
tion)
10' MIN.
2' MIN.
3' MIN.
CHIMNEY
MAY BE INSULATED
IF NECESSARY
HORIZONTAL RUN
1/4" RISE/FT
HANGER STRAP
ELBOW
HOSE
CLAMP
CONDENSATE
DRAIN
APPLIANCE
Fig. 18 Vertical venting installation - Masonry Chim-
ney (combustion air piping not shown)
6 720 608 542
RAIN CAP
STORM COLLAR
FLASHING
SILICONE SEAL
MORTAR
ELBOW
6720608158-14.2AL
3.3.4 Vent connections
B Attach the flue gas exhaust accessory (8 705 504
162) to the top of the unit (position 1) using the 4
screws and gasket provided. Fully insert stainless
steel vent pipe 1.5" minimum into the accessory and
tighten the clamp (position 2).
NOTE: Vent pipe must be completely ver-
i
tical when inserting or gasket inside ex-
haust accessory can become displaced.
Exhaust accessory can be removed with
vent pipe attached to check gasket posi-
tion.
Fig. 19
B Attach the combustion air inlet accessory (8 705
504 116) to the top of the unit (position 3) using the
3 screws and gasket provided, and install air intake
pipe over the accessory. NOTE: The appliance has
the option to mount the combustion air inlet acces-
sory on the top right or on the top left side of the
heater. The combustion air inlet that is not used must
be kept sealed.
Fig. 20
B Ensure that exhaust vent pipe is fully inserted in collar
to enable proper connection.
Exhaust venting must be 3" or 4" sealed
i
single wall stainless steel (AL29-4C) vent
pipe.
Installation instructions
15