Newmac NS220E - Reduced Clearance Installation; Wall Protection for Reduced Clearances

4
REDUCED CLEARANCES
Approved double-wall chimney connector and/or approved non-combustible protection over combustible surfaces may
permit the heater to be installed closer to combustible surfaces than the standard clearances to combustibles.
Clearances may only be reduced by means approved by the regulatory authority. To reduce clearances to combustible
materials, specified forms of wall protection must be installed. For acceptable methods and parts to be used, refer to
NFPA 211 (USA) or CAN/CSA B365 (Canada). Since municipal bylaws vary it is recommended that you (the installer)
check with your local authorities as to approved methods of wall protection for reduced clearances.
Heater
20 in min
500mm
Ceiling
Wall
Floor
3 in min
75mm
1 to 3 ins
25 to 75 mm
7/8in min
21mm
Heater
Wall
7/8in min
21mm
Non-combustible
vertical air movement
Non-combustible
at least 8" (200mm)
from center line
Non-combustible
support spacers
wall protection
Non-combustible
air space for free
vertical air movement
Wall protection
screw
Vertical steel
channel standoff
Combustible wall
air space for free
Side view Top view
Reduced clearance
wall protection
Typical non-combustible
spacer detail
support spacers
TYPICAL SIDE-WALL PROTECTION FOR CLEARANCE REDUCTION OF 50%