37
INSTALLATION – SOLAR CONTROL UNIT
The solar control unit is designed to be mounted on the side of the solar storage tank, with its location above
and offset from the solar cold water outlet. The solar control unit and components to enable the connection of
the collector circuit pipe work to the tank are supplied in a kit (PN 299293) separate to the tank. The solar
control unit PN 052295 (introduced in the solar controller kit PN 299293 in August 2018) contains a non-return
valve at the inlet to the circulator.
The solar control unit, supplied with a 1.8 metre power cord, requires a 220 V - 240 V a.c. 50 Hz general
purpose outlet (GPO) located within 1.2 metres of its installation. The GPO must have a continuous power
supply originating from a circuit other than the water heater circuit. The GPO is required to be weatherproof if
installed outdoors (refer to
on page 49).
The solar control unit incorporates a circulator to circulate the water between the solar storage tank and the
solar collectors. The solar control unit controls the operation of the circulator, and governs 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.
Note:
There is no provision for nor is adjustment to the solar control unit required.
Part No
Kit Components and Description - Controller Kit
299293
126619
Installation instructions solar controller kit
1
052295
Control unit solar pumped assembly
1
080031
Screws No 8 x 13 mm
4
220654
Valve service 3-way solar assembly, consisting of:
1 x service valve 3-way solar
2 x nut compression ½”
2 x olive compression copper ½”
1
331658
union body R 3/4 M x DN15 olive
1
331655
nut compression DN15 Rye 10090
1
331656
olive compression copper DN15
1
070896
Pipe cold 270 325 410 loline preformed tube ½” x 350 mm long
1
180073
Insulation pipe 13 mm ID x 280 mm long
1
090281
Insulation pipe 35 mm ID x 80 mm long
2
080228
Cable tie black 250
– 300 mm x 4.8 mm
6
088065
Fitting union male ½” C x ½” C Rye 4930, consisting of:
1 x
hex nipple brass ½” x ½”
2 x nut compression ½”
2 x olive compression copper ½”
1
Notes
•
Care must be taken when mounting the solar control unit to the side of the solar storage tank. Use the
self-tapping screws provided. If the cylinder is damaged as a result of mounting the solar control unit to
the jacket, any resultant faults will not be covered by the Solahart warranty (refer to
on page 34).
•
All pipe work must be purged and cleared of foreign matter before connection and before attempting to
operate the water heater.
•
It is important to connect the solar hot and solar cold pipes to the correct connections at the solar storage
tank and solar control unit.
•
Connect the solar hot and solar cold pipes to the solar storage tank and solar control unit using only the
fittings supplied.
•
All olive compression fittings must use brass or copper olives.
•
Use an approved thread sealant such as Teflon tape on all threaded joints. Conetite or O-ring fittings do
not require a thread sealant.
