Installation Guide

Columbia Installation and Operation Manual
33
7.4.1 Shield Construction Rules
See figure Clearances for shield construction to match each letter to a clearance.
-
Adhesives used in shield construction must not ignite or lose adhesive qualities at
temperatures likely to be encountered.
-
Mounting hardware which extends from the shield surface into combustibles may be
used only at the edges of the shield.
-
Mounting hardware must allow full vertical ventilation.
A
Minimum clearance between the appliance top and an unshielded combustible ceiling:
1473 mm (58 in.).
B
Shield extension above appliance: 500 mm (20 in.).
C
Minimum space behind shield: 25 mm (1 in.). In Canada 21 mm (7/8 in).
D
Clearance along the bottom of shield: minimum: 25 mm (1 in.) and maximum: 75 mm
(3 in.).
E
Minimum clearance along the top of shield at ceiling: 75 mm (3 in.).
F
Mounting hardware must not be located closer than 200 mm (8 in.) from the vertical
centre line of the appliance.
G
Edge clearance for ceiling shields to side and back walls: 75 mm (3 in.).
H
Shield extension beyond each side of appliance: 450 mm (18 in.).