Laars MFTHW199 - Locations for Vent Pipe Terminator; Direct Venting Clearances

Mascot FT, Heating Only, Boiler
Page 21
4.6LocationsforVentPipeTerminator
Description
US Direct Vent Instal-
lations
Canadian Direct Vent
Installations
A
Clearance above grade, veranda, porch, deck, or balcony 12 in (30 cm) 12 in (30 cm)
B
Clearance to window or door that may be opening 12 in (30 cm) 36 in (91 cm)
C
Clearance to permanently closed window * *
D
Vertical clearance to ventilated soft located above the terminal
within
a horizontal distance of 2 feet from the center line of the terminal
* *
E
Clearance to unventilated soft * *
F
Clearance to outside corner * *
G
Clearance to inside corner * *
H
Clearance to each side of center line extended above meter/
regulator assembly
*
3 ft (91 cm) within a
height 15 ft (457 cm)
above the meter/
regulator assembly
I
Clearance to service regulator vent outlet * 3 ft (91 cm)
J
Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other appliance
12 in (30 cm) 36 in (91 cm)
K
Clearance to a mechanical air supply inlet
3 ft (91 cm) above if
within 10 ft (3 m) hori-
zontally
6 ft (1.83 m)
L
Clearance above paved sidewalk or paved driveway located on
public property
* 7 ft (2.13 m)
M
Clearance under veranda, porch, deck, or balcony * 12 in (30 cm)
* For clearances not specied in ANSI Z224.1 / NFPA 54 or CAN/CSA-B 149.1, please use clearances in
accordance with local installation codes and the requirement of the gas supplier.
4.6.1DirectVentingClearances
Table 4. Direct Vent Clearances