33
mrcool.com
Selecting a Vent Type
Description
Canadian Direct Vent US Direct Vent
B
C
A
Clearance above grade, veranda, porch, deck,
or balcony.
12 in (30 cm)
36 in (91 cm)
*
*
*
*
*
*
*
*
*
*
*
*
*
*
12 in (30 cm)
12 in (30 cm)
Clearance to window or door that may be opened.
Clearance to permanently closed window.
Vertical clearance to ventilated soffit located
above the terminal within a horizontal distance
of 2 ft (61 cm) from the center line of the terminal.
Clearance to unventilated soffit.
Clearance to outside corner.
Clearance to inside corner.
Clearance to each side of center line extended
above meter/regulator assembly.
3 ft (91 cm) within a
height of 15 ft (4.6 m)
above the
meter/regulator
assembly
36 in (91 cm)
36 in (91 cm)
6 ft (1.8 m)
7 ft (2.13 m)†
12 in (30 cm)‡
36 in (91 cm)
above if
within 10 ft
12 in (30 cm)
Clearance to service regulator vent outlet.
Clearance to non-mechanical air supply inlet to
building or the combustion air inlet to any other
appliance.
Clearance to a mechanical air supply inlet.
Clearance above paved sidewalk or paved
driveway located on public property.
Clearance under veranda, porch, deck,
or balcony.
D
E
F
G
H
I
J
K
L
M
1. In accordance with the current with the current CSA B149.1 Natural Gas & Propane Installation Code.
2. In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two
single-family dwellings and serves both of those dwellings.
‡ Permitted only if veranda, porch deck, or balcony is fully open on a minimum of two sides beneath the floor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier.
Содержание MHWH199NC U Series
Страница 8: ...mrcool com 3 Product Overview Accessories 7 Fig 3 1 1 5 3 6 4 2 7 8 10 9...
Страница 24: ...23 Measuring The Inlet Gas Pressure Fig 9 1 Fig 9 2 Fig 9 4 mrcool com Fig 9 5 Fig 9 3...
Страница 65: ...Electrician and or HVAC Technician License Installation Date Installation location Serial number...