Bosch GWH C 920 ES Instruction Manual page 13

Required other than direct vent terminal clearances (single pipe penetration)
Fig. 10
A Clearance above grade, veranda, porch, deck or balcony
B Clearance to window or door that may be opened
C Clearance to permanently closed window
D Vertical clearance to ventilated soffit located above the vent
terminator within a horizontal distance of 2 feet (61cm) from the
center line of the terminator
E Clearance to unventilated soffit
Clearance to outside corner
F
Clearance to inside corner
G
H Clearance to each side of center line extended above meter/
regulator assembly
I Clearance to service regulator vent outlet
J Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other application
Clearance to mechanical air supply inlet
K
L Clearance above paved sidewalk or paved driveway located on
public property
M Clearance under veranda, porch deck or balcony
Table 8
1) In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2) In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code
3) A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
4) Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
For clearances not specified in ANSI Z223.1 / NFPA 54 or CSA-B149.1, one of the following shall be indicated:
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a) A minimum clearance value determined by testing in accordance with section 2.20, or;
b) A reference to the following footnote:
"Clearance in accordance with local installation codes and the requirements of the gas supplier."
6 720 608 836
1)
Canadian installations
12 in.
36 in.
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*
*
*
*
36 in. within a height 15 feet above
meter/ regulator assembly
36 in.
36 in.
72 in.
3)
84 in.
4)
12 in.
Installation instructions
6720608836-23.1Av
2)
U.S. installations
12 in.
4 feet below or to side of opening;
1 foot above opening
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*
*
*
*
*
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4 feet below or to side of opening;
1 foot above opening
36 in. above if within 10 feet
horizontally
84 in.
*
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