Harsco Industrial C1500H Installation & Owner's Manual page 32

200
180
160
140
M
P
G
120
‐
e
a t
100
R
80
w
o
F l
60
40
20
0
20% 30%
3.7.1.1 Piping with Refrigeration Machines
When installed in a two-pipe system that provides both chilled and hot water, the control system should be configured
so as to limit the time rate of change of temperature at the boiler. Consult your authorized Harsco Industrial,
Patterson-Kelley boiler representative for application guidance.
3.7.1.2 Piping with Air Handling Units
The boiler piping system of a hot water heating boiler connected to heating coils located in air handling units, where
they may be exposed to refrigerated air circulation, must be equipped with flow control valves or other automatic
means to prevent gravity circulation of the boiler water during the cooling cycle.
Variable Pumping
MACH C1500H, C2000H, C2500, C3000, C4000
40% 50%
Firing Rate ‐ %
C4000 C3000
60% 70% 80%
C2500 C2000H
32
®
MACH Gas Fired Boiler
C4000
C3000
C2500
C2000H
C1500H
90% 100%
C1500H