Roberts Gorden 350, 200, 150, 400, 250, 300, 225, 175 service manual High Altitude

SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES

5.6 High Altitude

These heaters are approved (without modifications) for installations up to 2000' (610 m) in US and Canada. Heaters installed above 2000' (610 m) must be de-rated. For installations above 2000' (610

m)in US, consult factory for information on burner de-rating. For installations from 2000' (610 m) to 4500' (1370m) in Canada, high altitude conversion kits are available. Heaters installed over 4500' (1370 m) in Canada are not approved and must be approved by the local or provincial authority.

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