Mod Con 300 - Page 22

SYSTEM TEMPERATURE RISE CHART
20°Δt 25°Δt 30°Δt 35°Δt 40°Δt 45°Δt
Model
Friction
Feet
Flow
G P M
Friction
Feet
Flow
G P M
Friction
Feet
Flow
G P M
Friction
Feet
Flow
G P M
Friction
Feet
Flow
G P M
Friction
Feet
Flow
G P M
Mod Con 300 19’ 30 12’ 24 9’ 20 7’ 17 6’ 15 5’ 14
Mod Con 500 19’ 50 11’ 40 8’ 33 6’ 28 5’ 25 4’ 23
Mod Con 850 35’ 85 26’ 65 18’ 54 12’ 45 10’ 40 8’ 36
The chart below represents the various system design temperature rise through the Mod Con along
with their respective flows and friction loss which will aid in circulator selection.
PART 5: BOILER PIPING (CONTINUED)
Figure 5-1
LP-205-E Rev. 12/5/07
FRICTION IN FEET OF HEAD
0
10
20
30
40
50
60
70
80
90
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36
FRICTION IN FEET OF HEAD
FLOW OF GPM
MODCON 300 MODCON 500
MODCON 850
MOD CON HEAT EXCHANGER PRESSURE DROP
GAS-FIRED BOILER Boiler Manual
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