Rev. B 6-23-08
P/N S794
1 1
Cool Water
In From Spa
From Filter Outlet
to Heater
Inlet
Warm Water
Out to Pool or Spa
Sanitizer
Corrosion Resistant,
Positive Seal
Check Valve
To Filter
Inlet
Cool Water
In From Pool
To Spa
To Pool
TM
Modular Media
Filter
PLUMBING CONNECTIONS
The Max-E-Therm
®
heater has the unique capability of direct
schedule 40 PVC, [schedule 80 CPVC for ASME models]
plumbing connections. A set of bulkhead fittings is included
with the Max-E-Therm to insure conformity with Pentair’s
recommended PVC plumbing procedure. Other plumbing
connections can be used. See
Figure 3
for plumbing connections.
CAUTION
Before operating the heater on a new installation, turn
on the circulation pump and bleed all the air from the
filter using the air relief valve on top of the filter. Water
should flow freely through the heater. Do not operate
the heater unless water in the pool/spa is at the proper
level. If a manual by-pass is installed, temporarily close it
to insure that all air is purged from the heater.
VALVES
When any equipment is located below the surface of the pool or spa, valves should be placed in the circulation piping
system to isolate the equipment from the pool or spa. Check valves are recommended to prevent back-siphoning. Back-
siphoning is most likely to occur when the pump stops, creating a pressure-suction differential. Do
NOT
sanitize the pool
by putting chlorine tablets or sticks into the skimmer(s). When the pump is off, this will cause a high concentration of
chlorine to enter the heater, which could cause corrosion damage to the heat exchanger.
CAUTION
Exercise care when installing chemical feeders so as to not allow back siphoning of chemical into the heater, filters
or pump. When chemical feeders are installed in the circulation of the piping system, make sure the feeder outlet line
is down stream of the heater, and is equipped with a positive seal noncorrosive “Check Valve”, (P/N R172288),
between the feeder and heater.
MANUAL BY-PASS
Where the water flow rate exceeds the maximum 120 GPM, a manual bypass
should be installed and adjusted. After installing the valve, adjust the valve to
bring the flow rate within the acceptable range. Then remove the valve handle
or lock it in place to avoid tampering. See
Figure 4
.
Section 2.
Installation
Figure 3.
Typical Installation
Table 1.
1. Set Manual
Bypass Valve
2. Remove handle
Cool Water In
Inlet from
Filter
Outlet to
Pool
Warm Water Out
See page 45 for Pressure Relief Valve Installations.
Figure 4.
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Содержание Max-E-Therm
Страница 5: ...P N S794 Rev B 6 23 08 4 Max E Therm Pool and Spa Heater ...
Страница 55: ...P N S794 Rev B 6 23 08 54 NOTES ...
Страница 56: ...Rev B 6 23 08 P N S794 55 NOTES ...
