42
STRATA1
L1
PE
N
R4
R5
R6
L1
PE
PE
A1
A2
R1
R2
R3
1
2
L2
L1
N
N
2
10
6
51
1
1
43
2
5
1
43
2
5
1
2
OS
PE
L
N
LP
E
N
PE
L
L1
N
PE
L2
N
1
3
4
5
6
X
3
X16
Radiator
Zone Pump
2A Max
Pump #2
Pump #1
Underfloor
Zone VT
Pump 2 A Max
Underfloor
Zone VT
Mixing Valve
Outside Air
Sensor
GND
PWM
+24V
GND
PWM
+24V
RE2132 Modulating
Room Unit For
Radiator Zone
QAW 44
Optional
Remote
Sensor
RE2132 Modulating Room
Unit For Underfloor Zone
Only possible if the boiler is
being controlled via RE2132
Underfloor Zone
VT Flow sensor
Time Switch
Cylinder
Stat
HWS sensor
HWS Primary
Pump 2A Max
MRO3
Weiland plug Nr2-notshown. Used only
on LPG installations where an additional
remote gas safety shut off valve is req'd.
2
Install only one method of HWS
temperature control. The use of an HWS
Sensor will allow no time control over
hotwater production. If timed hotwater
control is req'd then do not install an HWS
sensor, but install only a timeswitch & cylinder
T/stat.
= Weiland Plugs/Sockets
= Controls Sockets on Control panel. MRO3 has factory made on plugs and leads for these connections
X3,X16
1
3
4
5
6
NOTE: All connections
into MRO3 are made Via
labelled factory fitted cables with
the exception of the underfloor
Zone RE2132 which is cabled by
the installer
Boiler Dip Switch Settings
Supply
230 V
Low Pressure
Switch break
on Pressure Fall
Moulded Plug Assembly
typical electrical connection schematic
to suit system type 7
