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 thirdparty 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

Wallplate teminals			Live		Heating
			Input		On	Off
A B C	1	2	3	4	5	6
		3 amp				N
						E
		fuse

NL N E Mains

Zone control with motor open/ motor close two port valve

	Live	Heating
Wallplate teminals	Input	On	Off
A B C 1 2 3 4 5 6
EARTHS NOT SHOWN.	3 amp		N
ENSURE EARTH
CONTINUITY	fuse		E
THROUGHOUT
	N
N	L	N E
	Mains

1

Data Sheet	TP75 Heating Controller
Specifications
					Model Designations
	Feature	Integral		Remote			Remote			Remote temp
		temperature		temperature			teleswitch			sensor &
		sensor		sensor			reset			teleswitch reset
	3* or 6 cycles per hour,	TP75		TP75A			TP75B			TP75AB
	chrono-proportional control
	12* or 6 cycles per hour,	TP75C		TP75AC			TP75BC			TP75ABC
	chrono-proportional control
	Programmes	Profiled - (up to 6 temperature changes per day)
		All Day - ( 1st event temperature lasts until 6th event time)
		Raise or lower temperature setting
	User overrides	Extend duration of existing temperature setting by 1, 2 or 3 hours
		Select Profiled or All Day programme
		Monday to Friday			Event				Saturday & Sunday
		20°C at 06:30			1					20°C at 07:30
	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
		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			Optimum Start					Optimum Start
	DIL switch options				Control Disabled				Control Enabled
	at the time of installation	3			On/Off control					Chrono control
					enabled					enabled
		4			3 or 12 control cycles				6 control cycles
					per hour (see above *)					per hour
	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	2 x AA alkaline dry cells (Duracell preferred) to be renewed every
					24 months
	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

Fixing clearances, internal wiring & DIL switch settings

Internal wiring

Factory pre-set DIL

30

mm

Terminals

Outline of unit

switch settings

minimum

A B C

Wall or plaster

ELECTRONICS

5/2 day

7 day

N &

E

box mounting

looping

OSC ON

OSC OFF

holes

terminals

CHRONO

ON/OFF

A

B

C

1

2

3

4

5

6

Chrono 6

Chrono 3 or 12

Clearance

Knockouts for

Aperture for rear

Live

On

Off

for

Input

Heating

bottom cable

cable entry

screwdriver

entry

access

Remote Control

A

B

C

1

2

3

4

5

6

A

B

C

1

2

3

4

5

6

A

B

C

1

2

3

4

5

6

Functions

External Connections

* NOTE: Remote start-up

Remote

* TP75B

Remote

* TP75AB

Remote

TP75A

start-up

Remote

start-up

connections vary with model.

Sensor

TP75AC

circuit

TP75BC

Sensor

circuit

TP75ABC

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.

Danfoss Randall Limited

Ampthill Road

Bedford, MK42 9ER

Tel: [phone] Fax: [phone]

Email: [e-mail]

Website: www.danfoss-randall.co.uk

2	Part No. 320 Iss.7. 03/99