HAMWORTHY HEATING LTD
10
Merley Boiler Sequence Controller
500001210/D
2.4.1 Terminal Markings
-
Mains Voltage
Use
Slot
Connector type
L
Live AC
230
V basic unit
N
L
533511609
Protective earth
N
Neutral conductor
L1
Live AC
230
V burner
S3
Output burner fault
N
Neutral conductor
R
533901610
Protective earth
Q3
DHW charging pump / diverting valve
N
Neutral conductor
S
533901611
Protective earth
Q2
1st heating circuit pump
Y1
1st heating circuit mixing valve opening
T
533901612
N
Neutral conductor
Protective earth
Y2
1st heating circuit mixing valve closing
N
Neutral conductor
U
533901613
Protective earth
QX1
Multifunctional output 1
N
Neutral conductor
U
533901613
Protective earth
QX2
Multifunctional output 2
N
Neutral conductor
U
533901613
Protective earth
QX3
Multifunctional output 3
The Merley control is supplied with screw type Rast 5 connectors for all electrical
connections. The following connectors are provided