Roberts Gorden VANTAGE NP CTHN-200 Service Manual download pdf (Page 36)

CTHN-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

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 Ta b l e 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 Ta b l e 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

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Roberts Gorden VANTAGE NP CTHN-200 Service Manual Page 36

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