Patterson-Kelley MACH C-1500H Installation & Owner's Manual page 126

Hydronics/Water Flow (C-1500H & C-2000H)
The chart below represents the pressure drop (Ft of Head) versus the water flow rate (GPM) for the
MACH C-1500H & C-2000H. This information is useful to help size an appropriate circulation pump.
Keep in mind this pressure drop represents the boiler only, additional consideration is needed for any
connected piping, valves, strainers, couplings, flanges, etc.
The table below summarizes the minimum and maximum flow restrictions for the C-1500H:
Flow Condition
Maximum Flow
Minimum Flow
Minimum Flow
Minimum Flow
The table below summarizes the minimum and maximum flow restrictions for the C-2000H:
Flow Condition
Maximum Flow
Minimum Flow
Minimum Flow
Minimum Flow
Revised: January 3, 2020
Released: January 3, 2020
Boiler Operation
High Fire
High Fire
Ignition
Low Fire
Boiler Operation
High Fire
High Fire
Ignition
Low Fire
 Patterson-Kelley 2020
All Rights Reserved.
P-K MACH
Technical Service 1.877.728.5351
Approximate ΔT
Flow Rate
141 GPM
71 GPM
36 GPM
28 GPM
Approximate ΔT
Flow Rate
188 GPM
94 GPM
47 GPM
38 GPM
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
®
Gas Fired Boiler
20°F
40°F
40°F
20°F
20°F
40°F
40°F
20°F
Page 121