Fulton Pulse HW (PHW) Fully Condensing Hydronic Boiler - Manual (Page 30)

© The Fulton Companies 2013
INSTALLATION
PHW-IOM-2013-0214
SECTION 2
2-24
FIGURE 18 - ROOF PITCH
Wall Thimble Installation
Adhere to the following for wall thimble installation:
1. Insert a 9” diameter thimble through the wall from the
outside. Secure the outside fl ange to the wall with nails
or screws, and seal with adhesive material.
2. Install the inside fl ange to the inside wall, secure with
nails or screws, and seal with adhesive material.
3. Pass the vent pipe through the thimble from the
outside and join to the rest of the vent system. Seal the
pipe to the thimble fl ange with adhesive material. See
Figure 20.
4. Install two pipe retaining clamps around the intake
as well as vent pipes on both ends of the wall thimble
(on the inside and outside of the wall) through which
Horizontal Installation Wall Penetrations
Adhere to the following for horizontal wall penetrations:
1. Select the point of penetration where a minimum of
1/4” per foot upward pitch can be maintained.
2. When penetrating a non-combustible wall, the hole
through the wall must be large enough to maintain
the pitch of the vent and provide sealing. Use adhesive
material to seal around the vent on both sides of the
wall. When penetrating a combustible wall, a wall
thimble must be used. See Figure 19 for installation
instructions. Minimum wall thickness through which
vent system may be installed is 3 1/4”. Maximum wall
thickness through which vent system may be installed
is 20 inches.