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Flow
GPM (lpm)
20 (75)
30 (113)
40 (151)
50 (189)
60 (227)
70 (265)
80 (303)
90 (340)
100 (378)
Table K.
Heat Exchanger Pressure Drop (UG Closed)
NOTE: Table capacity is based on schedule 40 black
iron pipe. For capacity using other material, consult
local codes.
Headers
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
PROTEK SHIELD
ASSEMBLY
Figure 16. Inlet/Outlet Header
16
Pressure Drop
Ft. of Head (m of Head)
268A
408A
9.5 (2.9)
9.7 (2.96)
13.4 (4.0)
9.8 (3.0)
13.4 (4.0)
10.4 (3.2)
13.5 (4.1)
10.9 (3.3)
14 (4.3)
12 (3.6)
15 (4.5)
13 (3.9)
16.2 (4.9)
14.2 (4.3)
16.7 (5.0)
O-RING
HEADER FLANGE
(CPVC)
HEADER FLANGE NUT
(CPVC)
PLUMBING
(FIELD SUPPLIED)
F10664-1
ProTek Shield Assembly
This heater is equipped with a ProTek Shield Assembly,
which is shipped loose in the accessory carton for field
installation.
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 lbs).
Figure 17. ProTek Shield Assembly
A
CAUTION: STOP the pool pump before attempting to
remove ProTek Shield Assy. Failure to do so may result
in damage to ProTek Shield Assy, loss of pool water, or
personal injury.
CAUTION: Do not use tools to remove (twist) the
ProTek Shield Assy or the wing nut on the stud of the
ProTek Shield Assy. Non-warrantable damage may
occur.
Follow the steps below to replace the ProTek Shield Assy:
1. Shut off the pool pump and bleed pressure from the
system.
2. Close isolation valves to minimize pool/spa water
loss.
3. Remove wing nut from bottom stud on ProTek Shield
Assy.
4. Remove bonding wire ring terminal from stud.
5. Rotate ProTek Shield Assy clockwise (by hand) to
unscrew it from the assembly.
6. Inspect/replace as necessary and reverse above
procedure to reinstall. Hand-tighten only! Do not use
tools.
NOTE: Make sure the O-ring is properly seated in the
O-ring groove before installation.
F10715
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