Notes
1. DT92E is completely wireless and so is not shown connected on
these wiring diagrams.
2. The ST9420C is a Class II (double insulated) device. A parking
terminal is provided for earth wiring continuity, if required.
3. In the Sundial S-Plan, W-Plan, and Y-Plan wiring diagrams,
connections are shown to basic boilers only. For wiring connections
to Pump over-run boilers refer to Boiler manufacturers’ instructions
or to Honeywell Technical Help Desk for assistance.
4. It is recommended that gravity circulation hot water systems are
fitted with a suitable hot water control valve as shown in the Sundial
C-Plan system.
C-Plan W-Plan
Y-PlanS-Plan
L641
CYL. STAT
2 1
C
V4073
MID-POSITION VALVE
BLUE
G/YELLOW
WHITE
GREY
ORANGE
3 AMPS
MAX
L
N
230V~
50...60Hz
BOILER
PUMP
E N L
L
N
E
ST9420C
*NOTE 2
N
L 1 2 3 4
1 2 3 4 5 6 7 8 9 10
DT92E
Wireless
Room
Thermostat
DT92E
Wireless
Room
Thermostat
L641
CYL. STAT
2 1
C
V4043H
2 PORT ZONE VALVE
HEATING
BLUE
G/YELLOW
BROWN
ORANGE
GREY
V4043H
2 PORT ZONE VALVE
HOT WATER
BLUE
G/YELLOW
BROWN
ORANGE
GREY
3 AMPS
MAX
L
N
230V~
50...60Hz
BOILER
PUMP
E N L
L
N
E
ST9420C
*NOTE 2
1 2 3 4 5 6 7 8 9 10
N
L 1 2 3 4
Wiring shown as a hot water priority system
Clock
N L 1 2 3 4
3 AMPS MAX
HW OFF HW ON
CH OFF CH ON
N
L
OFF ON OFF ON
230V~
50...60Hz
1.6 Sundial Plan Wiring Diagrams
1.5 ST9420C Internal Wiring
DT92E
Wireless
Room
Thermostat
V4043H
2 PORT ZONE VALVE
BLUE
G/YELLOW
BROWN
WHITE
ORANGE
GREY
3 AMPS
MAX
L
N
230V~
50...60Hz
BOILER
PUMP
E N L
L
N
E
ST9420C
*NOTE 2
L641
CYL. STAT
2 1
C
N
L 1 2 3 4
1 2 3 4 5 6 7 8 9 10
DT92E
Wireless
Room
Thermostat
V4044
DIVERTING VALVE
G/YELLOW
BROWN
BLUE
L641
CYL. STAT
2 1
C
3 AMPS
MAX
L
N
230V~
50...60Hz
BOILER
PUMP
E N L
L
N
E
ST9420C
*NOTE 2
N
L 1 2 3 4
1 2 3 4 5 6 7 8 9 10
To Next Page
Loading...
