Solahart Streamline 270MDV, Owner'S Manual

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DRAINING THE SOLAR COLLECTORS
To drain the solar collectors and the solar hot and solar cold pipe:

Cover the solar collectors with an opaque material.

Open a hot water tap and allow the water to run for five minutes immediately prior to draining the solar
collectors.
This will assist in the transfer of any high temperature water in the solar collectors to the solar storage
tank.

Close the hot water tap.

Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 47).
Warning: Exercise care, as water discharged from the solar collectors may be of a very high
temperature.

Using a flat bladed screw driver, open the bleed valve fitted adjacent to the solar hot water inlet of the
solar storage tank
(refer to diagram on page 48 ) .

Undo the compression fitting at the top of the circulator (located at the side of the solar control unit) and
disconnect the solar cold pipe.
Water will now drain from the solar collectors and the solar hot and solar cold pipes.

When water stops flowing from the solar hot and solar cold pipes, reconnect the solar cold pipe to the
circulator and tighten the compression fitting.

Close the bleed valve.
DRAINING THE WATER HEATER
To drain the water heater:

Cover the solar collectors with an opaque material.

Open a hot water tap and allow the water to run for five minutes immediately prior to draining the solar
storage tank.
This will assist in the transfer of any high temperature water in the solar collectors to the solar storage
tank.

Close the hot water tap.

Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 47).
Warning: Exercise care, as water discharged from the solar storage tank may be of a very high
temperature.

Operate the relief valve release lever - do not let the lever snap back or you will damage the valve seat.
Operating the lever will release the pressure in the water heater.

Undo the union at the cold water inlet and attach a hose.
Let the other end of the hose go to a drain.

Operate the relief valve again.
This will let air into the water heater and allow the water to drain through the hose.