Crown Boiler BWC151 Manual Do Utilizador

TABLE 9.6: PIPE AND CIRCULATOR SIZING FOR INDIRECT WATER HEATER LOOP

BOILER 

MODEL

(a)

(b)

(c)

(d)

(e)

(f)

PIPE 

SIZE

FLOW

MAX. I.W.H. 

PRESSURE 

DROP

CROWN INDI-

RECT WATER 

HEATERS

CIRCULATOR 

MODEL

I.W.H. LOOP MAX 

EQUIVALENT 

LENGTH

(in NPT)

(GPM)

(ft HEAD) 

(ft)

BWC070

1

6.0

1.7

MS-26 (*)
MS-40 (*)
MSH-40H (*)
MT040GBR (*) 

Taco 008

122

BWC090

1

8.0

3.0

MS-26
MS-40 (*)
MSH-40H 
MT040GBR  (*)

Taco 0014

78

BWC120

1

8.0

3.0

MS-26
MS-40
MSH-40H
MT040GBR 
MT050GBR
MT065GBR
MT080GBR

Taco 0014

108

BWC120

1

8.0

5.0

MSH-53H Taco 

0014 

70

BWC151

1

8.0

3.0

MS-26
MS-40
MSH-40H
MT040GBR 
MT050GBR
MT065GBR
MT080GBR

Taco 008

49

BWC151

1

8.0

5.0

MS-53
MS-53H
MSH-79(*)

Taco 0014

150

TABLE 9.6 NOTES:

1) Indirect water heaters with an asterisk (*) will not achieve their catalog rating due to inadequate boiler water flow 

and/or inadequate boiler output.

48

TABLE 9.7: FITTING EQUIVALENT LENGTHS

FITTING

PIPE SIZE

EQUIVALENT LENGTH (ft)

90 ELBOW 

1

2.75

TURN IN TEE

1

5.50

RUN OF TEE

1

1.75

SWING CHECK

1

7.00

GATE VALVE

1

0.60