Keston Spa Installation Manual download pdf (Page 10)

Cut out

lmmersion

HeaterWring

Connect Live

to

thermostat

Heat resisting

cable

from Double Pole

isolating

switch

Connect

Earth

Connect

Neutral

-

Hand

guarantee

card to

user.

8.

Electrical

Specification

& Wiring

(lmmersion

Heater)

-

Element

terminals are marked

N(Neutral)

and L(Live)

-

Ensure

earth connection

of 3 wire

supply

is connected

to

earth.

-

Recommended

supply for

3kW element is

2.5mm

cable

to

85614l

-

A 16 Amp

timer is recommended

for

3kW

elements

-The

unit is not fitted with

a fuse.

-

All heating

elements

operate

on a 230 VAC

50Hz

mains

supply. Do

not fit immersion

heate(s)

without

thermal

cutout(s).

FUSE

RATING:

The fuse

rating

for two

3kW

immersion

heaters

wired

separately

from

the main fuseboard

should

be l5

Amps.

Electrical

Wiring

Drawing

Cylinder

Thermostat

From Timeclock

Motorised

Valve

DHW Output

N

E

L

To Boiler

Electrical

Specification

and Wiring

(Thermostat

Control)

-

The

cylinder control

thermostat

is mounted

at

the

top of the unit

in a housing with

cable

entry

point.

-

The

unit houses

two thermostats,

a control

thermostat

and

an overheat

thermostat.

Operation of

either thermostat

must

cease

the supply

of heat

to the cylinder.

-

Remove

the thermostat

housing

cover. Wire

the

two thermostats

inside in

series

to the

hot

water

control valve as

shown

below. Electrical

5pecification

and Wiring

(Thermostat

Control)

for additional

heat source refer

to the suppliers

manual.

However,

the manual reset

limit ther

mostat

should be

used to isolate

any further

supply

of

heat to the

Spa.

9. Secondary

Circulation

-

A

pump

is required

together with

a non-return

valve.

-

The

pump

should be fitted with isolating

valves

on either

side and

sited

to minimise

air

accumulation

away from the high

point

of

the circuit.

An

air bleed valve may

be

located

at

1O

the

high

point.

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