Specifications

TM024 Premier Loline Solar Drain back Service Instructions REV: A
D.O.I: 12/12/2007
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Effective 10/08/07 – Solar Cold Connection
• The cold pipe which is foamed into the heater had the large brass fitting removed so
that just the pipe protrudes.
• Item 2 – Union ½”C x ½”M is replaced by 088065 compression union ½”C x ½”C
which is now item 2a.
• Item 10 - 087035 Rubber disc is replaced by 221754 Kelvindale plug which is now
item 10a.
Note: This means the solar cold connection is different although the installing plumber still
makes to two ½” copper connections.
Thermostat Changes – 591 Models Only
The Robertshaw ST thermostat was introduced to 591 models on 14/08/2007 and replaces
the Robertshaw EWT thermostat used previously.
It should be noted that although ST series thermostat is a direct replacement for the EWT
series thermostat the terminal connections and wiring arrangement is different, therefore;
Whenever an EWT series thermostat is replaced with a ST series
thermostat as a spare part, each appliance will require rewiring at the
thermostat. Refer to wiring diagrams on pages 6 & 7 for wiring
arrangements for EWT and ST series thermostats.
Preventative Maintenance
It is suggested for peak performance that the water heater be serviced annually.
Servicing is to be performed by qualified persons.
1. Check for discharge from the T&PR valve. Whilst the electric booster (if fitted) is off,
and during periods of low solar contribution there should be no discharge of water.
When the electric booster (if fitted) is operating or during periods of high solar
contribution, a small discharge of water may be evident. Operate the valve-easing lever
to ensure the valve opens and resets properly. Always open and close the valve gently.
The T&PR valve should be replaced at 5 yearly intervals.
2. Check for leaks at the collector connectors, hot and cold pipes and all tank fittings.
3. Check the collector glass is not cracked and the absorber plate finish is not
deteriorating.
4. Confirm all supports and anchors retaining the collector(s) to the roof are present, firmly
fixed and in good condition.
5. Clean the collector glass. Do not stand on the collectors while cleaning.
6. Check for signs of plant or tree growth that may be shading the collectors. Advise
customer to have pruned if possible.
7. Check for signs of excessive corrosion on the water heater jacket, collector panels and
roof stand if fitted.
8. Isolate power and check all electrical connections for signs of overheating due to poor
connection.
9. 591 Models Only
Conduct an electrical insulation test on the electric booster circuit only (refer to page
42). Note: Do not Megger test the electronic controller.
596 Models Only - Refer to TM023 Integrity 26 Litre Service Instructions for
preventative maintenance information on the Integrity 26 litre gas booster.