Technical data

246810

13579

S1LN

ES4S5S6

D5D2D1

14 16 18 20 22 24 26 28 30 32 34 36 38

23 25 27 29 31 33 35 37

11 13 15 17 19 21

RS232

Fig 5.7g

5.7.8 domestic hot water temperature sensor (TF)

(if required)

For domestic hot water priority, a KTY 81-210 sensor or a volt free contact thermostat can be used.

Connections are provided at connector No 5 – see fig 5.7b.

5.7.9 LPG operation

For use with LPG, an external gas solenoid valve (if required) may be installed in the gas supply line

outside the building. This interrupts the gas distribution if there is no heat demand or a fault. Connections

for an external solenoid (if required) are provided at plug No 2 – see fig 5.7b.

5.7.10 connecting the DHW primary pump

(if required)

A domestic hot water primary pump can be connected directly to the boiler. The connection should

be made via a 3 core cable to plug No 6 – see fig 5.7b. Max load 2A. Where the pump motor exceeds

2Amps a proprietry relay must be used.

5.7.7 cascade controller KKM2 (contd)

HWS Primary Pump 230V ac

Heating Pump 230V ac

230Vac Supply

Flow Sensor

Return Sensor

HWS Sensor

Outside Air Sensor

RE 2132 Room Unit

External On/Off Controls

Boiler Control Connections

For midimat control

Connect to Plug 4 R2 & R3

KKM2 sequence controller wiring details

Further information can be found in the operating manual of the KKM cascade manager.