30 table 10: multiburner design requirements – Roberts Gorden VANTAGE NP CTHN-125 User Manual
Page 36
CTHN-S
ERIES
I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
30
Table 10: Multiburner Design Requirements
* U-tube = 2 elbows
9.3 Burners Per Pump
1. The maximum number of burners per pump is
shown in Table 11.
2. When combining different burner inputs in a
system, the number of burners per pump (0' -
2,000' altitude) is given by the sum of their
inputs:
a. EP-100 up to 500,000 Btu/h max, but not
more than 4 burners.
b. EP-200 up to 750,000 Btu/h max, but not
more than 6 burners.
c. EP-300 up to 1,600,000 Btu/h max, number
of burners is limited to the maximum
number of burners listed in Table 11 for the
largest input model used.
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 Tube 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)
Minimum Manifold Tube Length per Burner
3' (1 m)
3' (1 m)
3' (1 m)
6' (2 m)
6' (2 m)
10' (3 m)
10' (3 m)
10' (3 m)
Maximum Manifold Tube Length per
Burner
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)
Minimum Distance from Burner to Elbow
or U-tube
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)
Elbows Allowed per Burner*
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