SECTION 5: N
ATIONAL
S
TANDARDS
AND
A
PPLICABLE
C
ODES
9 of 51
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 above 2000' (610 m)
m
u
st be de-rated. For installations above 2000' (610
m) in US, cons
u
lt factory for information on b
u
rner
de-rating. For installations from 2000' (610 m) to
4500' (1370m) in Canada, high altit
u
de conversion
kits are available. Heaters installed over 4500'
(1370 m) in Canada are not approved and m
u
st be
approved by the local or provincial a
u
thority.
