Regency U37-NG NATURAL GAS - Manual (Page 7)

U37 Regency ULTIMATE Rear Vent Direct Vent Freestanding Gas Heater 7
INSTALLATION
EXTERIOR VENT TERMINAL LOCATIONS
A=
Clearance above grade, veranda, porch, deck, or balcony *(min. 12"/30cm)
B=
Clearance to window or door that may be opened *(12"/30cm) #(9"/23cm)
C=
Clearance to permanently closed window *(min. 12"/30cm)
D=
Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of (24"/60cm) from the centerline of the terminal (min. 22"/55cm) check with local code.
E=
Clearance to unventilated soffit (min. 12"/30cm)
F=
Clearance to outside corner (12"/30cm)
G=
Clearance to inside corner (12"/30cm)
H=
Not to be installed above a meter/regulator assembly within (3'/90cm) horizontally from the centerline of the regulator.
J=
Clearance to service regulator vent outlet *(min. 36"/90cm)
K=
Clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance *(12"/30cm) #(9"/23cm)
L=
Clearance to a mechanical air supply inlet *(min. 72"/1.8m) #3' (91cm) above if within 10' (3m) horizontally.
M=
**Clearance above paved sidewalk or a paved driveway located on public property *(min. 84"/2.1m)
N=
Clearance under veranda, porch, deck, or balcony *(min. 12"/30cm)***
Note: * As specified in CGA B149 Installation Code. Note: Local codes or regulations may require different clearances. **A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings. ***Only permitted if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. # In accordance with the current ANSI Z223.1/NFPA 54, National Gas Code