Harsco Industrial MACH C1500GG Installation & Owner's Manual page 26

100
90
80
70
60
50
40
30
20
10
0
20
30.00
25.00
20.00
15.00
10.00
5.00
0.00
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.
MACH Variable Pumping
40 60
Firing Rate (%)
Pressure Drop Chart
C1500
Flow (GPM)
80
C2000
Page 26
MACH® Gas-Fired Boiler
C2000
C1500
100