Munchkin VWH High Efficiency Hot Water Supply Boiler - Manual (Page 20)

PIPING
20
0
2
4
6
8
10
12
14
16
18
20
22
24
5 10 15 20 25 30 35 37.5 40
Flow in Gallons per Minute
Friction in Feet of Head
MUNCHKIN 399VWH MUNCHKIN 199 VWH
Circulator Sizing Chart
BOILER TACO P/N GRUNDFOS P/N Bell & Gosset t
199M 0011 26-96 PL-36
399M 1400-60 UPS 32-160 PL-55
C. CIRCULATOR SIZING
The Munchkin VWH Heat Exchanger has a pressure drop which must be considered in your system
design. Refer to the graph below for pressure drop through the Munchkin VWH Heat Exchanger.
*The recommended circulators are based on 1 gpm per 10,000 BTU/hr w/20