
1
N
N
N
CYL.
'STAT
PUMP
N
DHW DHW HTG HTG
ON COM ON COM
BOILER
SPRING RETURN
VALVE IN DHW
FP975 - Heatplan (2x2-port valves) system
CYL.
'STAT
PUMP
3 PORT MID-
POS'N VALVE
ROOM
'STAT
BOILER
DHW DHW HTG
ON OFF ON
EARTHS NOT SHOWN.
ENSURE EARTH
CONTINUITY
THROUGHOUT
N
FP975 - Heatshare (Mid-pos. valve) system
E N L OUTPUT INPUT
EARTHS NOT
SHOWN.
ENSURE EARTH
CONTINUITY
THROUGHOUT
ROOM
'STAT
ON COM
TS975 - typical combination boiler wiring
BOILER TERMINALS
ENL 22
MAINS DHW HTG
922 OR 972 OFF COM ON OFF COM ON
SET5 ON COM OFF ON COM OFF
ENL123456
LINKS
MAINS DHW HTG
922 OR 972 OFF COM ON OFF COM ON
SET5 ON COM OFF ON COM OFF
ENL123456
LINKS
ENL123456
SET1 OR SET4
ON COM OFF
MAINS SPARE OUTPUT
911 OR 971 OFF COM ON
TS975 & FP975 will
plug on to the
wallplates of both
Danfoss Randall Mk.9
and SET time controls.
When used on an
existing correctly wired
MK.9 wallplate, no
wiring changes need to
be made but the small
switch on the back of
the new unit should be
re-positioned as shown
overleaf.
For SET replacement,
no such adjustment is
necessary.
Systems
N
N
N
N
SPRING RETURN
VALVE IN HTG.
ROOM
'STAT
Data Sheet Electronic Time Controls
FP975 7-day Programmer
TS975 7-day Timeswitch
The Danfoss Randall FP975 7-day full programmer
and TS975 7-day time switch offer all the control
flexibility and user features of their counterparts in the
regular Mk18 range (FP75 and TS75), but with two
important differences.
1) These units are intended specifically to replace, or
upgrade systems with, Danfoss Randall Mk.9 time
controls. They have British Gas Standard wallplates
used by many other models, including the Danfoss
Randall SET range, the Horstmann 425 Diadem and
Tiara, and their 525 and 527 models.
2) Both models have voltage-free output contacts,
making them applicable to systems with low voltage
control circuits, e.g. combination boilers or warm air.
Units are supplied with SET wallplates but, simply by
re-positioning a small switch in the back, inter-
changeability is achieved with Mk.9 controls.
Replace models With
922 & 972 FP975
911 & 971 TS975
Both the FP975 and the TS975 are supplied as full 7-
day controls, but the installer can easily and quickly
convert them to weekday/weekend units if preferred.
Application
●●
●●
● British Gas Standard wallplate provides inter-
changeability with other popular time controls
●●
●●
● Total Control Flexibility
●●
●●
● Extra Simple Programming
●●
●●
● Stylish and Compact Design
●●
●●
● Simple Change to Weekday/Weekend Control
●●
●●
● Simple GMT/BST Time Change
●●
●●
● Day Programme Copy Facility
●●
●●
● AM/PM or 24 Hour Clock Display
●●
●●
● Up to 3 Ons/Offs each Day
●●
●●
● Built-in, Ready-to-Use Programmes
●●
●●
● Battery Back-up
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