Technical data

6:3 ELECTRICAL CONNECTIONS

All wiring should be carried out to and comply with the current IEE

Wiring Regulations.

All electrical work must comply with any relevant regulations that

apply at the time of the installation.

All electrical installation and maintenance of SOLARcomfort must be

carried out by a competent qualified installer.

DO NOT drill casing for cable entry.

1. All cable sheath clamps must be correctly fitted.

2. The conductor sheaths must be continuous into joint enclosures.

3. Conductors must be correctly fastened to terminals.

4. Conductor insulation to be within 2mm of terminals.

5. All cable conductors external to joint enclosures must be insulated

and sheathed.

MAINS SUPPLY

The mains supply must be from a fused double pole isolating switch fitted

with 5 amp fuse or a BS1383/A kite marked domestic plug fitted with 5

amp fuse.

IMPORTANT

The mains supply cable must be separated from the sensor cables by

a minimum of 15mm.

ELECTROMECHANICAL RELAYS

The SOLARcomfort controller incorporates two standard electromechanical

relays which have a breaking capacity of 2(1)A 250V~.

AUXILIARY HEAT SOURCE PUMP

When the AST 100 is installed with an auxiliary heat source (and set as

Arr 2), the pump for this is wired to the controller (R2) - see wiring diagram

6.5B.

The auxiliary pump must not be set at maximum speed.

ARISTON PRIMO TWIN CYLINDERS

When using an Ariston Primo twin cylinder the following must be done:-

1. The lower cylinder temperature thermostat must be completely

removed.

2. The manual reset overheat thermostat must be wired as shown on

wiring diagram Fig. 6.4A.

3. The AST 100 sensor S1 must be inserted into the cylinder’s lower

temperature sensor pocket together with the overheat temperature

sensor.

For other makes and models of cylinder, please refer to the

manufacturer’s instructions.

Note: All makes of cylinders with a

manual reset overheat thermostat

have to be connected in the same

way.