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Pentair Water Commercial Pool and Spa
Page 10
2.8 Temperature Sensor Placement
and Installation
A temperature sensor with 15 feet (5m) of cable
and an immersion well assembly are supplied with the
boiler. These must be installed in the field. Refer to
Figures 10 through 11.
1. The immersion well body is provided with a 1/2"
NPT. Mount the immersion well on the
underside of the filter circulation piping, just
upstream of the boiler inlet tee as close to the
boiler as possible (see Figure 10). DO NOT
INSTALL in boiler loop piping or
downstream of the boiler inlet tee.
2. Thread the spring and retainer onto the sensor
cable and secure sensor into the immersion well.
3. Route cable to heater control panel in a location
where it will not be subject to damage. Secure
with nylon cable ties.
2.9 Automatic Chlorinators
A concentration of chlorine in the heater can be
very destructive, therefore the following rules about
the installation and operation of such devices must be
followed:
1. The chlorinator should be installed so it
introduces the gas or solution downstream from
the boiler.
2. The chlorinator should be wired so it cannot
operate unless the filter pump is running.
3. The chlorinator should be provided with an anti-
siphon device so that the draining of the piping
after the pump shuts off will not siphon chlorine
solution into the boiler.
4. When the operation of a chlorinator is such that
it must be installed in the pump suction, or some
other place where the chlorine solution flows
through the heater, corrosion of the heater can
occur. Excessive concentrations of chlorine
caused by improper adjustment or failure of the
chlorination equipment cause this corrosion. The
resulting damage to the heat exchanger is not
covered by heater warranty.
Figure 10. Heater Piping Arrangement.