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33-1197 Solahart Owner‟s Manual – Thermosiphon Systems - Revision H – Nov 2013

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Using Your Solahart Water Heater As A Pre-Heater
This water heater is designed to be installed as an electric boosted solar water heater with its booster heating unit connected
to a power supply; however it may be installed with an in-series continuous flow or storage booster.
If this water heater is installed with an in-series booster, then the electric booster heating unit will not be connected to a
power supply and the references to the electric booster heating unit, thermostat and boosting controls in these installation
instructions will not be applicable to the installation.
Your Solahart can be used as a pre-heater to an existing water heater provided that:
1)
The power supply to the Solahart is not connected.
2)
The existing water heater is thermostatically-controlled not flow-controlled, except when used in conjunction with
an electronic instantaneous water heater.
3)
The operating pressures of the two water heaters are compatible or reduced to the lower of the two heaters.
4)
The existing water heater has sufficient thermal capacity in its own right to supply normal water requirements and is
complete with its own controls and valves and these are not interfered with.
5)
If using the Solahart water heater as a pre-heater to an instantaneous water heater, a temperature controlled by-pass
valve is installed to the instantaneous heater if required (consult the instantaneous water heater‟s installation
manual).
6)
If using the Solahart water heater as a pre-heater to a storage water heater, the water supply from the Solahart heater
be tempered to the temperature setting of the storage heater OR a temperature controlled by-pass valve be installed
to the storage heater to divert water from the Solahart heater when at a temperature above this setting. These
configurations ensure that the storage heater‟s thermal cut-out does not operate unnecessarily, resulting in the
storage heater no longer operating.
Note: With flow-controlled water heaters the Solahart water heater can act as a supplementary heat source only not as a preheater. The Solahart heater can be connected in a parallel circuit only via a changeover valve(s).

Troubleshooting – Save A Service Call
Should your Solahart not provide hot water please check the following before requesting a service call:
1)
2)
3)
4)
5)
6)

Shading from trees is not excessive and is not covering the collectors for all or part of the day.
Hot water usage is not excessive.
Hot water is not leaking from within the plumbing system.
Booster switch and/or time switch is turned ON.
Booster circuit fuse or circuit breaker is sound.
Electric meter speeds up when the booster switch is turned ON after being OFF.

Contact your local Solahart Dealer if all of the above have been checked and there is still no hot water.

!

Collector Glass Breakage
WARNING: NO ATTEMPT SHOULD BE MADE TO REPAIR BROKEN COLLECTOR GLASS

The collector glass is not offered as a replacement part. Should the solar collector require replacement, contact your local
Solahart Dealer.
NOTE: The product warranty DOES NOT cover breakage of collector glass. It is recommended that the household
insurance policy cover the collector glass and/or damage to the water heater, especially in cyclonic areas and in locations
where severe hail is likely to occur.
Solahart solar collectors have passed the AS/NZS 2712 requirements for resistance to hailstone damage, so it is not
normally necessary to fit a guard to a collector. Stone Guards are available to provide a level of protection to the collectors
against vandalism or accidental damage. Refer to your Solahart Dealer for details.