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Bosch Greentherm T9900 SE 160 Installation And Operating Instructions Manual page 24

Indoor residential tankless water heaters, 160 000/199 000 btu- natural gas 160 000/199 000 btu - liquefied petroleum lp gas
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Installation instructions
Required direct vent terminal clearances (twin pipe / concentric 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 terminal within
a horizontal distance of 2 ft (61cm) from the center line of the terminal.
E Clearance to unventilated soffit
F Clearance to outside corner
G Clearance to inside corner
H Clearance to each side of center line extended above meter/regulator
assembly
I Clearance to service regulator vent outlet
J Clearance to nonmechanical air supply inlet to building or the
combustion air inlet to any other appliance.
K Clearance to a mechanical air supply inlet
L Clearance above paved sidewalk or paved driveway located on public
property
M Clearance under veranda, porch deck or balcony
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.
24
1)
Canadian installations
with direct vent terminals
12 in. (30cm)
36 in. (91cm)
*
*
*
*
*
36 in. (91cm) within a
height 15 ft (4.6m) above
the meter/ regulator
assembly
36 in. (91cm)
36 in. (91cm)
6 feet (1.83m)
3)
7 ft (2.13m)
4)
12 in. (30cm)
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
2)
U.S. installations
with direct vent
12 in. (30cm)
12 in. (30cm) below or
to side of opening; 12
in. (30cm) above
*
*
*
*
*
*
*
12 in. (30cm)
36 in. (91cm) above if
within 10 ft (3m)
horizontally
*
*

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Greentherm t9900 se 199Greentherm t9900 se/i 199