UHA S
TANDARD
U
NIT
H
EATER
I
NSTALLATION
O
PERATION
AND
S
ERVICE
M
ANUAL
8 of 51
SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES
5.1 Gas Codes
The type of gas appearing on the name plate
m
u
st be the type of gas
u
sed. Installation m
u
st
comply
w
ith national and local codes and
req
u
irements of the local gas company.
United States: Refer to NFPA 54/ANSI Z223.1 -
latest revision, National F
u
el Gas Code.
Canada: Refer to CSA B149.1 Nat
u
ral Gas and
Propane Installation Code.
5.2 Aircraft Han
g
ars
Installation in aircraft hangars m
u
st be in
accordance
w
ith the follo
w
ing codes:
United States: Refer to Standard for Aircraft
Hangars, NFPA 409 - latest revision.
Canada: Refer to Standard CSA B149.1 Nat
u
ral
Gas and Propane Installation Code.
• In aircraft storage and servicing areas, heaters
shall be installed at least 10' (3 m) above the
u
pper s
u
rface of
w
ings or of engine enclos
u
res
of the highest aircraft
w
hich may be ho
u
sed in
the hangar. The meas
u
rement shall be made
from the
w
ing or engine enclos
u
re (
w
hichever is
higher from the floor) to the bottom of the heater.
• In shops, offices and other sections of aircraft
hangars comm
u
nicating
w
ith aircraft storage or
servicing areas, heaters shall be installed not
less than 8' (2.4 m) above the floor.
• S
u
spended or elevated heaters shall be so
located in all spaces of aircraft hangars that they
shall not be s
u
bject to inj
u
ry by aircraft, cranes,
movable scaffolding or other objects. Provisions
shall be made to ass
u
re accessibility to
s
u
spended heaters for rec
u
rrent maintenance
p
u
rposes.
5.3 Parkin
g
Structures and Repair Gara
g
es
Installation in garages m
u
st be in accordance
w
ith the follo
w
ing codes:
United States: Standard for Parking Str
u
ct
u
res
NFPA 88A - latest revision or the Code for Motor
F
u
el Dispensing Facilities and Repair Garages,
NFPA 30A - latest revision. Canada: Refer to
CSA B149.1 Nat
u
ral Gas and Propane
Installation Code.
• In accordance
w
ith the Standard for Parking
Str
u
ct
u
res NFPA 88A, heaters m
u
st be located
a minim
u
m of 18" (50 cm) belo
w
the floor-ceiling
assembly or 18" (50 cm) above the floor.
• In accordance
w
ith the Code for Motor F
u
el
Dispensing Facilities and Repair Garages,
NFPA 30A - latest revision, heaters m
u
st not be
installed less than 8' (2.4 m) above the floor.
5.4 Electrical
The heater m
u
st be electrically gro
u
nded in
accordance
w
ith the follo
w
ing codes:
United States: Refer to National Electrical
Code
®
, NFPA 70 - latest revision. Wiring m
u
st
conform to the most c
u
rrent National Electrical
Code
®
, local ordinances and any special
diagrams f
u
rnished.
Canada: Refer to Canadian Electrical Code,
CSA C22.1 Part 1 - latest revision.
5.5 Ventin
g
The venting m
u
st be installed in accordance
w
ith the req
u
irements
w
ithin this man
u
al and
the follo
w
ing codes:
United States: Refer to NFPA 54/ANSI Z223.1 -
latest revision, National F
u
el Gas Code.
Canada: Refer to CSA B149.1 Nat
u
ral Gas and
Propane Installation Code.
