CTHN-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
34 of 91
Table 10: Multiburner Design Re
q
uirements
* U-tube = 2 elbows
9.3 Burners Per Pump
1. The maxim
u
m n
u
mber of b
u
rners per p
u
mp is
sho
w
.
2.
When combining different burner inputs
in a
system, the n
u
mber of b
u
rners per p
u
mp (0' -
2,000' altit
u
de) is given by the s
u
m of their
inp
u
ts:
a. EP-100
u
p to 500,000 Bt
u
/h max, b
u
t not
more than 4 b
u
rners.
b. EP-200
u
p to 750,000 Bt
u
/h max, b
u
t not
more than 6 b
u
rners.
c. EP-300
u
p to 1,600,000 Bt
u
/h max, n
u
mber
of b
u
rners is limited to the maxim
u
m
n
u
mber of b
u
rners listed
for the
largest inp
u
t model
u
sed.
Table 11: Number of Burners Allowed Per Pump
Burner Model:
CTHN-40 CTHN-60 CTHN-80 CTHN-100 CTHN-125 CTHN-150 CTHN-175 CTHN-200
Radiant T
u
be Length
20' (6 m)
30' (9 m)
30' (9 m)
40' (12 m)
50' (15 m)
50' (15 m)
60' (18 m)
60' (18 m)
Minim
u
m Manifold T
u
be Length per B
u
rner
3' (1 m)
3' (1 m)
3' (1 m)
6' (2 m)
6' (2 m)
10' (3 m)
10' (3 m)
10' (3 m)
Maxim
u
m Manifold T
u
be Length per
B
u
rner
30' (9 m)
35' (10.5 m) 40' (12 m) 45' (13.5 m)
50' (15 m)
55' (16.5 m)
60' (18 m)
60' (18 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)
Elbo
w
s Allo
w
ed per B
u
rner*
2
2
2
2
2
2
2
2
Pump Model
Altitude
CTHN-40
CTHN-60 CTHN-80 CTHN-100 CTHN-125 CTHN-150 CTHN-175 CTHN-200
EP-100
0' - 2,000'
4
4
4
4
4
3
2
2
2,001' - 3,000'
4
4
4
4
3
3
2
2
3,001' - 4,000'
4
4
4
4
3
2
2
2
4,001' - 5,000'
4
4
4
4
3
2
2
2
5,001' - 6,000'
4
4
4
4
3
2
2
2
6,001' - 7,000'
4
4
4
3
3
2
2
2
7,001' - 8,000'
4
4
4
3
3
2
2
1
8,001' - 9,000'
4
4
4
3
2
2
2
1
EP-200 Series
0' - 2,000'
6
6
6
6
6
5
4
4
2,001' - 3,000'
6
6
6
6
6
5
4
3
3,001' - 4,000'
6
6
6
6
5
4
4
3
4,001' - 5,000'
6
6
6
6
5
4
4
3
5,001' - 6,000'
6
6
6
6
5
4
3
3
6,001' - 7,000'
6
6
6
6
5
4
3
3
7,001' - 8,000'
6
6
6
6
5
4
3
3
8,001' - 9,000'
6
6
6
6
5
4
3
3
EP-300 Series
0' - 2,000'
16
16
14
12
12
10
8
8
2,001' - 3,000'
16
16
14
12
12
9
8
7
3,001' - 4,000'
16
16
14
12
11
9
8
7
4,001' - 5,000'
16
16
14
12
10
9
7
6
5,001' - 6,000'
16
16
14
12
10
8
7
6
6,001' - 7,000'
16
16
14
12
10
8
7
6
7,001' - 8,000'
16
16
14
12
10
8
6
6
8,001' - 9,000'
16
16
14
12
10
8
6
6
