Solahart Streamline 270MDV, Owner'S Manual

Page: 47 / 56

47
COMMISSIONING
TO FILL AND TURN ON THE WATER HEATER
The power supply to the solar storage tank and solar control unit must not be switched on until the
water heater is filled with water
and a satisfactory megger reading is obtained.

Open all of the hot water taps in the house (don‟t forget the shower).

Open the cold water isolation valve fully on the cold water line to the water heater.
Air will be forced out of the taps.

Close each tap as water flows freely from it. Check the pipe work for leaks.

Bleed the solar collectors
Refer to
“Bleeding the Solar Collectors”
on page 48.

Plug in the solar control unit at the power outlet and switch on the electrical supply.
The power outlet must be switched on for the solar control unit to operate and solar gain to be achieved.
Refer to
“Solar Controller Operation at Start-Up”
on page 48.
Note: The solar control unit automatically controls the flow rate through the collector circuit. This is
achieved via the hot and cold sensors and differential controller programming providing control over the
operation of the circulator. There is no provision for nor is adjustment to the solar control unit required.

Switch on the electrical supply at the isolating switch to the solar storage tank.

Set the timer if one is installed.
Refer to
“Booster Control”
on page 45.

Remove the packaging / covers from the solar collectors.
Explain to the householder or a responsible officer the functions and operation of the solar water heater and
the timer if one is installed. Upon completion of the installation and commissioning of the water heater, leave
this guide with the householder or a responsible officer.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation, such as on a building site or
where the premises is vacant, then:

Switch off the electrical supply at the isolating switch to the solar storage tank.

Switch off the electrical supply at the power outlet to the solar control unit (refer to note below).

Close the cold water isolation valve at the inlet to the water heater.
Notes:

The freeze protection system will be rendered inoperable if electrical power is not available at the solar
control unit. Damage caused by freezing due to no power at the solar control unit is not covered by the
Solahart warranty.

If there is a risk of freezing, then it is necessary to drain the solar collectors and solar flow and return
pipe work (refer to
“Draining the Solar Collectors”
on page 50).

Refer to
“Terms of the Solahart Warranty”
on page 53.