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Flow GPM
Ft. of Head (m of Head)
(lpm)
207A
20 (75)
8.2 (2.5)
30 (113)
9.5 (2.9)
40 (151)
9.7 (2.95) 9.7 (2.95)
50 (189)
10 (3.0)
60 (227)
11 (3.3)
70 (265)
11.5 (3.5) 10.9 (3.3) 14.3 (4.35)
80 (303)
12.6 (3.8)
90 (340)
14 (4.3)
100 (378)
15 (4.6)
Table L.
Bronze Heat Exchanger Pressure Drop - ASME
Models (UG Closed)
NOTE: Table capacity is based on Schedule 40 black
iron pipe. For capacity using other material, consult
local codes.
Polymer Headers (Residential Models)
Before attaching the 2-inch unions to the inlet/outlet
header, make sure the O-rings are properly seated in
the grooves. Use Aqualube or equivalent non-petroleum-
based lubricant on the O-ring. Hand tighten the unions.
Glue PVC piping directly to the unions.
PROTEK
SHIELD
ASSY
Figure 17. Inlet/Outlet Header – Polymer
High temperature CPVC header flanges and header
flange nuts are provided. If there is any possibility of back-
siphoning when the pump stops, it is suggested that a
check valve (or valves) also be installed in the system.
Pressure Drop
267A
337A
407A
9.5 (2.9)
11 (3.3)
13.4 (4.1)
9.8 (2.98) 12.2 (3.7) 13.4 (4.1)
10.4 (3.2) 13.7 (4.2) 13.5 (4.1)
14 (4.3)
12 (3.7)
15.5 (4.7)
15 (4.6)
13 (4.0)
16.2 (4.9) 16.2 (4.9)
14.2 (4.32) 17.5 (5.3) 16.7 (5.1)
O-RING
HEADER FLANGE
(CPVC)
PLUMBING
HEADER FLANGE NUT
(CPVC)
Bronze Headers (ASME Models)
Heater must be located so that any water leaks will not
damage the structure of adjacent area. Before attaching
the ProTek Shield Adapter to the inlet connection and the
2-inch unions, make sure the O-rings are properly seated
in the grooves. Use Aqualube or equivalent non-petroleum-
based lubricant on the O-ring. Hand tighten the unions.
Glue PVC piping directly to the unions.
HEADER
Figure 18. Inlet/Outlet Header – Bronze
NOTE: Some jurisdictions require the addition of a flow
switch on ASME installations. Kit # 015889F for flange
connection or 015890F for NPT connection can be
ordered that will allow a standard ASME unit to comply
with the code requirements.
ProTek Shield Assembly
This heater is equipped with a ProTek Shield Assembly
(located under the inlet connection on polymer headers
and in the ProTek Shield Adapter assembly shipped loose
in the accessory carton for field installation on bronze
ASME headers).
NOTE: ProTek Shield not available on ASME models
until end of Q3 2020.
This component provides protection to the heat exchanger
against galvanic corrosion, when properly bonded to the
heat exchanger. It should be replaced when the weight of
the ProTek Shield is reduced to about 40% of the original
weight (1.46 #).
F10641
Figure 19. ProTek Shield Assy
O-RING
HEADER FLANGE
(CPVC)
HEADER FLANGE NUT
(CPVC)
PLUMBING
PROTEK SHIELD
ASSEMBLY
F10715
F10664
15
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