Heat Exchanger Care; Service Assistance - Rheem RTHP009 Installation Maintenance And Service Manual


Care should be taken of the heat exchanger by correct approach to the hydraulic layout of the
installation and chemical treatment.

It is fundamental that the nominated flow rate of the unit be maintained and pump selection
should be made with knowledge of the target figure. Reference should be made the individual
unit's specification with current requirements shown below. As specification data may vary with
product development and/or where units are custom-manufactured, flow rates should be
confirmed for validity with Rheem Thermal at the time of installation.

The heat pump includes an internal by-pass. The factory setting allows for the by-pass to be
partially open, allowing diversion of part of the total flow.

If the hydraulic layout and recirculating pump capacity is seen to provide a flow well above the
specified flow litres/sec or at excess pressure, then an external by-pass should be installed or
alternatively, the pump flow should be moderated.

For seasonal shut-downs, always allow water to pass through the heater, even if the heater is
not being used. If the heater is isolated with chlorinated water or in its water piping, chlorine
gases may corrode the heat exchanger. Rheem Thermal's warranty will be voided where
chemical corrosion is clearly diagnosed as the cause of failure.

For shutdowns in locations experiencing freezing conditions, the piping system and heater must
be drained. The heater should be flushed with clean fresh water for several minutes to wash
away all traces of chemicals, then drained. It is recommended that the entire system is purged
using pressurised air to force remaining water from the system.

If water enters the refrigeration system due to heat exchanger failure, contact supplier for advice.
Caution! Motorised diverter valves must never be installed so that they can move through a
closed inlet position while the pump is operating and allow the system to pressurise. This
situation will void the Rheem Thermal warranty and may significantly damage the pool
heater and other system equipment.

SERVICE ASSISTANCE


Service must only be undertaken by properly authorised personnel
You may contact Rheem Thermal directly on 02 9684 3684 or your local Rheem Thermal
distributor to arrange for your service or recommend a qualified service organisation.
It will be necessary for you state the model number and serial number of your heater. This
information will be found on the heater data plate.
Your Rheem Thermal pool heater is supported by a manufacturer's warranty. There are a
number of factors that will affect the length of service. These include but are not limited to
the water chemistry, flow rate, the water pressure, the service & maintenance program and
the usage pattern.

Heat Exchanger Care

How long will the Pool & Spa Heater Last
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