Heat Exchanger Flow and Restriction Properties
i
nSTallaTion
| 3.11
T
herm
e
lecT
h
ydronic
GPM
Velocity (Feet/Sec)
Restriction 150
o
F Water
(Feet of Head)
Restriction 80
o
F
50% Propylene Glycol
(Feet of Head)
5
0.6
0.1
0.2
10
1.2
0.3
0.6
15
1.8
0.7
1.3
20
2.4
1.2
2.1
24.5
3
1.7
3.1
25
3.1
1.7
3.2
30
3.7
2.4
4.5
Heat Exchanger Specifications
Capacity 3.4 Gallons
Maximum Flow 30 GPM
Tubing Material Cooper
Maximum Outlet
Water Set Temperature 180
o
F
CAUTION
FREEZE PROTECTION: Risk of property damage. Hydronic heating
system freeze-ups WILL cause extensive damage to the entire heating
system and/or property. It is the responsibility of the installer to
provide protection against freezing.
PIPING SUPPORT: Risk of equipment damage or personal injury.
DO NOT use the exchanger as support for piping. Support brackets
should be in place to ensure proper operation of the system and to
keep pressure off the inlet and outlet piping.
MULTIPLE UNITS SYSTEM PLUMBING WITH MASTER LOOP FIGURE 13
2" MINIMUM
HEATING
VALVE
CHECK
UP15-42F
LOOP
PRIMARY
PUMP
ZONES
TO
2" MINIMUM
BALANCING
VALVE
FROM
HEATING
ZONES
9180
9180
9150
9150
NOTES:
• Check valves on the return side are
recommended to prevent back flow into the
furnace.
• Balancing valves are recommended to
provide an even flow of water between all
units.
•
Flow must continue for a minimum of 30
seconds after call for heat ends.
