Optima Installation and Operation Manual
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7.4.1 Shield Construction Rules
1. Minimum space behind shield: 25 mm (1 in.). In Canada 21 mm (7/8 in).
2. Minimum clearance along the bottom of shield: 25 mm (1 in.).
3. Maximum clearance along the bottom of shield: 75 mm (3 in.).
4. Minimum clearance along the top of shield at ceiling: 75 mm (3 in.).
5. Shield extension beyond each side of appliance: 450 mm (18 in.).
6. Shield extension above appliance: 500 mm (20 in.).
7. Edge clearance for ceiling shields: 75 mm (3 in.).
8. Adhesives used in shield construction must not ignite or lose adhesive qualities at
temperatures likely to be encountered.
9. Mounting hardware must allow full vertical ventilation.
10. Mounting hardware must not be located closer than 200 mm (8 in.) from the vertical centre line
of the appliance.
11. Mounting hardware which extends from the shield surface into combustibles may be used only
at the edges of the shield.
