Roberts Gorden UHD[X][S][R] 225, UHD[X][S][R] 300, UHD[X][S][R] 250, UHD[X][S][R] 400 High Altitude

UHD STANDARD DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

4.6 High Altitude

These heaters are CSA-approved (without modifications) for installations up to 2000' (610

m)in US and Canada. CSA approved 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 CSA- approved and must be approved by the local or provincial authority.

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