SECTION 8: U
NITARY
L
INEAR
& U-T
UBE
H
EATER
I
NSTALLATION
17 of 91
8.2 Unitary Heater Re
q
uirements
CTHN
u
nitary heaters are typically shipped as a
b
u
rner package, fan assembly and a t
u
be and
accessory package. The t
u
be and accessory
packages contain eno
u
gh t
u
be, reflector and hanging
parts for one
u
nitary CTHN heater. Elbo
w
s,
u
-t
u
bes,
controls, and any other parts m
u
st be p
u
rchased
separately.
for a general overvie
w
of a
CTHN
u
nitary heater. CTHN
u
nitary heaters are
controlled by thermostat.
s
u
mmarizes the design req
u
irements for a
CTHN
u
nitary heater.
Table 5: Unitary Heater Design Re
q
uirements
Burner Model:
CTHN-40
CTHN-60
CTHN-80
CTHN-100 CTHN-125 CTHN-150 CTHN-175 CTHN-200
Maxim
u
m N
u
mber of B
u
rners Allo
w
ed
per Fan Assembly (P/N 05220000)
1
1
1
1
1
1
-
-
Maxim
u
m N
u
mber of B
u
rners Allo
w
ed
per Fan Assembly (P/N 05221000)
-
-
-
-
-
-
1
1
Minim
u
m Radiant T
u
be Length
10' (3 m)
20' (6 m)
20' (6 m)
30' (9 m)
40' (12 m)
40' (12 m)
50' (15 m)
50' (15 m)
Minim
u
m Distance from B
u
rner to Elbo
w
or
U-T
u
be
10' (3 m)
10' (3 m)
10' (3 m)
15' (4.5 m) 15' (4.5 m)
20' (6 m)
20' (6 m)
20' (6 m)
