Danfoss MK18 Installation guide
Timeswitches
Manufacturer Model Replacement Wallplate connections and function
Compatible with existing wallplates. Re-use existing wallplate, no re-wiring necessary.
Danfoss Randall TS15 and TS715 TS715 Si
Danfoss Randall TS975 TS715 Si 5 6 4
Horstmann C11 and C17 TS715 Si 2 3 4
Sunvic (Pegler Sunvic) Select 107 TS715 Si 1 2 4 3
Compatible with existing wallplates. Simple wiring changes required.
Mark up wires and reconnect according to table below
Invensys (ACL-Drayton) LP111, LP711, LS111, LS711 and Tempus 1 and 2 (new models) TS715 Si
Invensys (Switchmaster) 300 TS715 Si 4 1
Siemens (Landis & Staefa) RWB100, RWB152, RWB170, RWB3, RWB30, RWB50 & RWB7 TS715 Si 2 3 4
New wallplate needed.
Mark existing wires with current wallplate numbers and reconnect according to the table below.
Danfoss Randall TS975, SET1, SET1E and SET4 TS715 Si
Danfoss Randall 103, 103E, 103E5 and 103E7 TS715 Si 5 6 3 2 1
Danfoss Randall 911 and 971 TS715 Si N L 5 4 6
Grasslin (Towerchron) QE1 TS715 Si N L 2 3 4
Grasslin (Towerchron) T2001 and T2001Q TS715 Si N L 7
Honeywell ST6100A and ST6100C TS715 Si N L 1 2 4
Horstmann Centaur SC1 and SC7 TS715 Si N L 1 2 3
Horstmann Coronet, 517, H11 and H17 TS715 Si N L 5 6 4
Horstmann Coronet 425 TS715 Si N L 5 6 4
Invensys (ACL-Drayton) Tempus 1 and Tempus 2 (old models) TS715 Si N L 1 3 4 2
Potterton (Potterton Myson) EP4001, EP4002 and EP5002 TS715 Si N L 5 2 4
Sunvic (Pegler Sunvic) SP20 and SP35 TS715 Si N L 3 4 5
Earth
Neutral
Live
Common
O
O
O
Spare
Spare
Spare
E N L 1 2 3 4
Use same wallplate, no wiring changes required.
E N L
Wallplate connections and function
Earth
Neutral
E N L 1 2 3 4
Connections on current wallplate, mark wires and
reconnect as above, no links required.
N L
Wallplate connections and function (new wallplate)
Earth
Neutral
E N L 1 2 3 4
Connections on current wallplate, mark wires and
reconnect as above, if mains voltage application
N L 5 6 4
E
1 2 3 4
Live
Common
1 2 4 3
Live
Common
link terminal L to 1.
MK18
On
Compatibility Guide
On
On
Danfoss Ltd
Ampthill Road
Bedford MK42 9ER
Tel: 01234 364621
Fax: 01234 219705
Email: ukheating@danfoss.com
Website: www.heating.danfoss.co.uk
VWGVA412
Part No. 196v14 04/15
www.heating.danfoss.co.uk
Programmers
N/O
Manufacturer Model Replacement Wallplate connections and function
Earth
Neutral
Live
HW O
CH O
HW On
HW On
HW On
HW O
CH On
CH On
CH O
CH On
CH
Com
CH Com
Compatible wi th existing wallplates. Re-use existing wallplate, no re-wiring necessary
Danfoss Randall CP15, CP75, MP15 and MP75 CP715 Si
Danfoss Randall FP15 and FP75 FP715 Si
Glowworm Mastermind CP715 Si
Grasslin (Towerchron) DP72 and QE2 FP715 Si
Horstmann C21 and C27 CP715 Si
Invensys (ACL-Drayton)
Siemens (Landis & Staefa)
New wallplate needed.
Mark existing wires with current wallplate numbers and reconnect according to table below.
Danfoss Randall 702 FP715 Si
Danfoss Randall 102, 102E, 102E5 and 102E7 (link 6-3) CP715 Si 5 6 1 2
Danfoss Randall 3020P, 3060 and 4033 CP715 Si 7 6 4 2
Danfoss Randall 4033 (link 6-1) CP715 Si N L 5 3 4 2
Grasslin (Towerchron) QE2 FP715 Si N L 1 2 3 4
Honeywell ST6200A and ST6300A CP715 Si N L 1 2 3 4
Honeywell ST6400C and ST6450 FP715 Si N L 1 2 3 4
Honeywell ST699B CP715 Si N L 7 4 6 3
Honeywell ST799A1003 FP715 Si N L 7 4 6 3
Invensys (ACL-Drayton) Tempus 3, 4 and 6 CP715 Si N L 1 2 3 4
Invensys (ACL-Drayton) Tempus 7 (old models) FP715 Si N L 1 2 3 4
Invensys (ACL-Drayton) Switchmaster 400 and 600 (no terminal 4 on 600) CP715 Si N L 4 3 1
Invensys (ACL-Drayton) Switchmaster 805, 900, 905 and 9001 CP715 Si N L 4 2 3 1
Potterton (Potterton Myson) EP2000, 2001, 2002, 3001, 3002 and 6000 CP715 Si N L 1 2 3 4
Potterton (Potterton Myson) 6002 FP715 Si N L 1 2 3 4
Sunvic (Pegler Sunvic) SP100, SP25, SP30 and SP50 FP715 Si N L 1 4 2 5
Grasslin (Towerchron) MP CP715 Si 2 1 6 10
Grasslin (Towerchron) FP CP715 Si 2 1 8 11 6 10
FP975 service replacement programmer ts directly to MK9 wallplates.
No need to replace wallplate or rewire.
Important - set FP975 in MK9 mode
Danfoss Randall 922 and 972 (MK9 model) link L to 5&2 FP975 E N L 1 2 3 4 5 6
FP975 service replacement programmer ts directly to SET (British Gas) wallplates.
No need to replace wallplate or rewire.
Important - set FP975 in SET mode.
Danfoss Randall SET4, SET5, SET3E and SET3M (SET mode) FP975
Horstmann Diadem 425, 525 and 527 FP975
LP112, LP241, LP522, LP722, LS241, LS522, LS722,
Tempus 6 and 7 (new models)
RWB102, RWB2, RWB2.9, RWB20, RWB200, RWB252, RWB270,
RWB40 and RWB9
FP715 Si
CP715 Si
E N L 1 2 3 4
Use same wallplate, no wiring changes required.
E N L 1 2 3 4
Wallplate connections and function (new wallplate)
Earth
Neutral
Live
HW O
CH O
E N L 1 2 3 4
Connections on current wallplate, mark wires and reconnect as
N L 4 2 3 1
E
Existing MK9 wallplate. Set programmer to MK9 mode
Earth
E N L 1 2 3 4 5 6
Existing SET/British Gas wallplate. Set programmer to SET mode
Earth
E N L 1 2 3 4 5 6
E N L 1 2 3 4 5 6Danfoss Randall SET2 and SET2E (SET mode) FP975
above, link as instructed.
Neutral
Live
HW O
HW
Com
Link terminal L to terminals 2 and 5.
Neutral
Live
HW On
HW Com
Link terminal L to terminals 2 and 5
CH On
CH O
Wiring Diagrams and Wallplate Information
FP975
SET
Wallplate
}
FP975
TIMER
N/O
5
E
L123
N
ON
Note: For SET2E link terminals 1 and 5
FP975 on a SET wallplate
CP715 Si and FP715 Si
COM
DHW
N/C
OFF
N/O
45
ON
COM
HTG
TS715 Si
N/C
6
OFF
MK9
Wallplate
MK18
Wallplate
}
ELECTRONICS
TS715 Si
L1234
N
COM
N/C
OFF
ON
CP715 Si, FP715 Si
ELECTRONICS
N/C
N
L1234
MAINS OFF
DHW
N/O
N/C
N/O
ON
OFF
ON
DHW
HTG
HTG
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