Technical data

5.8.2 mixer module MR 03

Mounting

● Remove the 4 screws on the front of the pump

control.

● Remove the cover.

● Mount the unit in the space provided inside the

boiler casing.

● Refer to the instructions supplied with the unit.

140

115

Technical Information

● Supply Voltage – 230V 50Hz (mains from Strata

3 appliance)

● Maximum contact load (pump 2) – 1.0A

● Maximum contact rating (pump 2) – 120W

● Maximum contact load (pump 3) – 1.0A

● Maximum contact rating (pump 3) – 120W

● Supply temperature sensor S7: Type KTY 81-

210 (PTC)

NOTE:

Ancillary relays required if pump duties are

greater than detailed above.

The mixer module MR 03 is used if a standard heating circuit (eg for normal temperatures for radiators)

and a mixed heating circuit (eg for under floor heating 55/45°C) with different flow temperatures are

connected to the Strata 3. The mixer module MR 03 is intended for mounting inside the boiler casing, and

contains a potentiometer for setting the heating compensation slope for the underfloor circuit.

Fig 5.8b

Fig 5.8c

Fig 5.8d

MRO3

Control

Module

MRO3

Control

Module

NOTE: The DIP switch of the Strata 3 must be

adjusted so that only one direct heating circuit is

controlled (DIP 1 = ON).

If the power consumption of pump 2 is more

than 120W, an auxiliary relay is to be installed.