Addison UHA 150, Installation, Operation & Service Manual

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SECTION 5: N
ATIONAL
S
TANDARDS AND
A
PPLICABLE
C
ODES
9 of 49
5.6 Hi g h Altitude
These heaters are approved ( w itho u t modifications)
for installations u p to 2000' (610 m) in US and
Canada. Heaters installed a b ove 2000' (610 m)
m u st b e de-rated. For installations a b ove 2000' (610
m) in US, cons u lt factory for information on bu rner
de-rating. For installations from 2000' (610 m) to
4500' (1370m) in Canada, high altit
u de conversion
kits are availa b le. Heaters installed over 4500'
(1370 m) in Canada are not approved and m u st b e
approved b y the local or provincial a u thority.