Unit installation

INSTALLATION – SOLAR CONTROL UNIT

SOLAR STORAGE TANK WITH RAISED SOLAR HOT INLET

Numbers in parentheses refer to items on diagram on page 9.

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.

To connect the solar cold pipe and mount the solar control unit on a solar storage

tank with a raised solar hot inlet (and raised heating unit):

 Assemble a ½” x ½” hex nipple (1) into the branch outlet of the 4 way tee (2)

(ensure the compression end of the nipple is exposed) and the ½” x ¾” hex

nipple (3) in the end of the 4 way tee, so that when the assembly is fitted to

the cold water inlet of the solar storage tank, the compression nipple (1) is

orientated vertically upwards and the cold sensor housing is orientated to the

rear of the solar storage tank.

 Fit the assembly to the solar cold water outlet of the solar storage tank.

Ensure the compression nipple (1) is orientated vertically upwards and the

cold sensor housing is orientated to the rear of the solar storage tank.

 Fit the ½”plug (15) into the end of the 4 way tee.

 Connect the DN15 preformed pipe (4) to the branch tee connection, using the

compression nut (5) and olive (6) provided, ensuring the longer straight end

is orientated upwards.

 Insulate the preformed pipe (4) with the 400 mm long x 13 mm diam

insulation (12) provided, ensuring the insulation is pushed down the full length

of the pipe.

 Locate the solar control unit (8) by connecting the DN15 preformed pipe (4)

to the nipple on the inlet of the circulator (7) using the compression nut (5)

and olive (6) provided.

 Secure the solar control unit (8) to the solar storage tank using the four

screws (9) provided.

 Fit a ½” x ½” hex nipple (1) to the outlet of the circulator (7) mounted in the

solar control unit (8) (ensure the compression end of the nipple is exposed).

 Connect the solar cold pipe (to the collector) to the nipple (1) on the outlet

side of the circulator (7) using the compression nut (5) and olive (6) provided.

 Insert the cold sensor probe (10) into the cold sensor housing on the 4 way

tee (2), ensuring the ‘O’ ring is in position on the probe. Lock it into position

with the locking washer and clip provided.

 Connect the hot sensor lead (from the solar collector installation) to the hot

sensor cable connector at the underside of the solar control unit (8).