Danfoss TP75 Data sheet
Data Sheet TP75 Heating Controller Programmable
Room Thermostats
Application & Features
The TP75 is a true seven-day programmable
thermostat incorporating many useful features.
An optional Optimum Start function will enable a
required comfort temperature to be achieved by
a programmed time, without wasting fuel
because the heating plant started earlier than
necessary. The chrono-proportional control logic
ensures optimum comfort with minimal fuel
consumption.
The basic model incorporates a temperature
sensor within the casing, but a remote sensor
version is also available. Both can be converted
to operate as an electronic thermostat, controlling
at a constant, user selected, temperature. The
Holiday Mode uses this temperature for a
selected number of days, before automatically
returning to programmable thermostat mode.
Versions are available for use with a third- party
telephone line switching device so that frost
mode or holiday mode can be cancelled whilst
away from home.
●●
● Battery powered, programme unaffected
●●
by mains power failures
●●
● Volt-free output contacts, rated 10 to
●●
250Vac, 50/60Hz, or dc 10mA to 2(1)Amp.
●●
● Integral or remote temperature sensing
●●
●●
● Up to 6 programmable temperature
●●
changes per day, including a
programmable "OFF" function
●●
● Selectable 7 day or 5/2 day programme
●●
●●
● Selectable time or temperature display
●●
●●
● Temperature range, 5°C to 30°C, in
●●
increments of 0.5°C.
●●
● Selectable Chrono-proportional control
●●
or On/Off control
●●
● Optional Optimum Start
●●
●●
● Frost protection function
●●
●●
● Thermostat function for constant
●●
temperature setting
●●
● Holiday function, up to 99 days at a
●●
constant, selectable temperature
●●
● Extend override, maintains existing set
●●
temperature for a further 1, 2 or 3 hours
●●
● Selectable All Day programme, 1st event
●●
temperature lasts until 6th event becomes
active
●●
● Remote reset of Frost or Holiday functions
●●
possible
Typical System
Connections
Direct Burner Control
3 amp
fuse
Live
Input
Wallplate teminals
ABC123456
N
LNE
Mains
Heating
On Off
Zone control with motor open/
motor close two port valve
Live
Heating
Input
LNE
Mains
On Off
N
E
1
Wallplate teminals
ABC123456
N
E
EARTHS NOT SHOWN.
ENSURE EARTH
CONTINUITY
THROUGHOUT
3 amp
fuse
N
N
Data Sheet TP75 Heating Controller
Specifications
Feature
3* or 6 cycles per hour,
chrono-proportional control
12* or 6 cycles per hour,
chrono-proportional control
Programmes
User overrides Extend duration of existing temperature setting by 1, 2 or 3 hours
Factory pre-set programme, 15°C at 08:30 2 20°C at 09:30
all may be changed 20°C at 11:30 3 20°C at 11:30
Note: An "OFF" event can 15°C at 13:30 4 20°C at 13:30
also be programmed 21°C at 16:30 5 21°C at 16:30
DIL switch options Control Disabled Control Enabled
at the time of installation
Voltage Rating 10-250Vac, 50/60Hz or 10-250Vdc
Contact Current Rating 10mA to 2 Amp (res), 1 Amp (ind)
Switching Action SPDT voltage free
Main Batteries
Memory Retention Sufficient to remove and replace batteries within one minute
Max. Ambient Temperature 45°C
Dimensions mm 135 wide x 88 high x 32 deep
Integral Remote Remote Remote temp
temperature temperature teleswitch sensor &
sensor sensor reset teleswitch reset
TP75 TP75A TP75B TP75AB
TP75C TP75AC TP75BC TP75ABC
Profiled - (up to 6 temperature changes per day)
All Day - ( 1st event temperature lasts until 6th event time)
Raise or lower temperature setting
Select Profiled or All Day programme
Monday to Friday Event Saturday & Sunday
20°C at 06:30 1 20°C at 07:30
15°C at 22:30 6 15°C at 22:30
DIL Switch No. Factory Pre-set Installer Alternative
1 7 day programme 5/2 day programme
2
3
4
2 x AA alkaline dry cells (Duracell preferred) to be renewed every
Model Designations
Optimum Start Optimum Start
On/Off control Chrono control
enabled enabled
3 or 12 control cycles 6 control cycles
per hour (see above *) per hour
24 months
Fixing clearances,
internal wiring & DIL
switch settings
Remote Control
Functions
External Connections
* NOTE: Remote start-up
connections vary with model.
2
30 mm
minimum
Wall or plaster
box mounting
holes
Terminals Outline of unit
A B C
looping
terminals
N & E
Internal wiring
ELECTRONICS
ABC123456
On Off
Clearance
for
screwdriver
access
ABC123456
Remote
Sensor
Danfoss Randall can accept no responsibility for possible errors in catalogues, brochures and other printed material, and reserves the right to
alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent
changes being necessary in specifications already agreed.
TP75A
TP75AC
Knockouts for
bottom cable
entry
Aperture for rear
cable entry
Remote
start-up
ABC123456
circuit
* TP75B
TP75BC
Live
Input
Heating
Factory pre-set DIL
switch settings
Remote
start-up
circuit
7 day
OSC OFF
ON/OFF
Chrono 3 or 12
* TP75AB
TP75ABC
5/2 day
OSC ON
CHRONO
Chrono 6
ABC123456
Remote
Sensor
Danfoss Randall Limited
Ampthill Road
Bedford, MK42 9ER
Tel: (01234) 364621 Fax: (01234) 219705
Email: danfossrandall@danfoss.com
Website: www.danfoss-randall.co.uk
Part No. 320 Iss.7. 03/99
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