Horstmann Product Catalogue

Horstmann Product Catalogue

Product Catalogue

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Horstmann, advanced simplicity

Control, it's what we're good at and in domestic central heating and hot water installations that means more accurate control of time and temperature all around the system.

Sometimes the solution needs to be simple, like a room stat and timer installation or it can be more sophisticated requiring 3 or 4 channel electronic programmers which can independently handle hot water and separate heating zones.

Our latest electronic room thermostats are clever too. Their latest thermostat technology is proven to save up to 10% in energy costs* by increasing the efficiency of the boiler firing regime.

Wireless, mains or battery versions of our controls are available across the Horstmann range.

Well worth checking out.

Horstmann... Together, we're in control.

Contents

Programmable Room Thermostats

C-Stat 11-ZW / C-Stat 17-ZW

C-Stat 11-B / C-Stat 17-B

C-Stat 11-M / C-Stat 17-M

ThermoPlus AS2-RF

ThermoPlus AS1 / AS2 / PRT1

Time Controls

ChannelPlus

ChannelPlus H37XL

ChannelPlus H47XL

CentaurPlus

CentaurPlus ZW

ServicePlus

425

Thermostats

HRT4-ZW / HRT4-B

HRT4-A / HTT4 / HFT4

HCT2

Motorised Zone Valves

ZonePlus Z Series

Electric Water Heating

Electrisaver

Electronic 7

Economy 7 Quartz

BX2000

E7BX

15

17

19

21

23

11 - 24

11

13

7

9

3

5

Page

1- 10

1

25 - 30

25

27

29

31-32

31

33 - 42

33

35

37

39

41

Additional Information

Electric Water Heating Controls – Schematic diagrams

Internal wiring diagrams

TPI

Optimum Start

Programmer replacement and wiring guide

Thermostat compatibility guide

Programmable thermostat compatibility guide

43 - 55

43

44 - 46

47

48

49 - 54

55

56

1

C-Stat 11-ZW and 17-ZW

Wireless Z Wave programmable room thermostat with mains powered receiver

Programmable room thermostats are widely recognised as one of the best ways in which to control central heating. Our

C-Stat programmable room thermostats have a large display and intuitive user interface, making them easy to set up and use. C-Stat uses a sophisticated time proportional integral

(TPI) algorithm for accurate temperature control and energy efficiency. The latest Z Wave wireless technology is employed for superior reliability

C-Stat is the ideal control for combi boilers, extra heating zones or for retro fitting into an existing system with no room stat.

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Features

Battery powered wireless room thermostat

Mains powered receiver – voltage free contacts

Choice of 24 hour or 7 day versions

Up to six target temperature settings per day

Menu driven programming via large back-lit display, with prompts to aid the user

Automatic daylight saving time adjustment

Target temperature and actual room temperature indication

Temporary temperature override

Holiday programme

Tamperproof security code

Optional optimum start facility

Temperature settings - 5°c to 30°c

Specification

C-Stat 11-ZW and 17-ZW

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Reduced energy costs

No additional wiring when installing the Z Wave wireless version in existing installations

No disruption to decor

Reliable Z Wave wireless connection

Battery and Mains versions are also available in this range

Thermostat

POWER SUPPLY

CONTACT TYPE

2 x AA Batteries

Micro-disconnection

WIRING CONFIGURATION Voltage free c/o contacts (SPDT)

CONTACT VOLTAGE RATING 230V AC 50Hz (30V dc)

TEMPERATURE

DIFFERENTIAL 0.5°c

TEMPERATURE ACCURACY +/- 0.5°c at 21°c

DESIGN STANDARDS

DIMENSIONS

ENCLOSURE

BS EN 60730-2-9

100 x 120 x 26.5mm

Flame retardant thermoplastic

ENCLOSURE PROTECTION

POLLUTION DEGREE

INSULATION CLASS

OPERATING TEMPERATURE

RANGE

CLOCK

IP30

Degree 2

Double insulated

SETTINGS PER DAY

0° C to 40 °c

12 / 24 Hour with

Automatic BST / GMT adjustment

6 target temperature settings per day

TRANSMITTER FREQUENCY 868 MHz

RECIEVER CATEGORY Category 3

POWER CLASS Class B

Receiver

POWER SUPPLY

CONTACT TYPE

VOLTAGE RATING

OPERATING TEMPERATURE

RANGE

INSULATION CLASS

RATED IMPULSE VOLTAGE

POLUTION DEGREE

ENCLOSURE PROTECTION

DIMENSIONS

MOUNTING

230V AC 50Hz

Micro-disconnection,

Voltage Free Contact

3 (1) Amps 230V AC

0 °C to 40 °c

Double insulated

Cat 2 – 2500V

Degree 2

Flame retardant thermoplastic

86 x 86 x 36.25mm

6 terminal plug in wall plate

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3

C-Stat 11-B and 17-B

Battery powered programmable room thermostat

Programmable room thermostats are widely recognised as one of the best ways in which to control central heating. Our

C-Stat programmable room thermostats have a large display and intuitive user interface, making them easy to set up and use. C-Stat uses a sophisticated time proportional integral

(TPI) algorithm for accurate temperature control and energy efficiency. Being battery powered, these models are suitable for replacing most existing room thermostats.

C-Stat is ideal for combi boilers, extra heating zones or upgrading older inefficient room thermostats.

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Features

Voltage free contacts

Choice of 24 hour or 7 day versions

Up to six target temperature settings per day

Temperature Settings - 5°c to 30°c

Menu driven programming via large back-lit display, with prompts to aid the user

Automatic daylight saving time adjustment

Target temperature and actual room temperature indication

Temporary temperature override

Holiday programme

Optional high and low temperature limits

Tamperproof security code

Optional optimum start facility

C-Stat 11-B and 17-B

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Reduced energy costs

Minimal boiler cycling and reduced flow temperatures through use of sophisticated TPI control algorithms

Runs on 2 standard AA type batteries

No need for additional wiring when replacing an existing thermostat

Frost protection setting

Wireless and Mains versions are also available in this range

Specification

POWER SUPPLY

CONTACT TYPE

WIRING CONFIGURATION

2 x AA Batteries

Micro-disconnection

Voltage free c/o contacts (SPDT)

CONTACT VOLTAGE RATING 230V AC 50Hz (30V dc)

CONTACT CURRENT RATING 8A (1A inductive)

TEMPERATURE

DIFFERENTIAL 0.5°c

TEMPERATURE ACCURACY +/- 0.5°c at 21°c

DESIGN STANDARDS

DIMENSIONS

ENCLOSURE

BS EN 60730-2-9

100 x 120 x 26.5mm

Flame retardant thermoplastic

IP30 ENCLOSURE PROTECTION

POLLUTION DEGREE

INSULATION CLASS

Degree 2

Double insulated

OPERATING TEMPERATURE

RANGE

CLOCK

SETTINGS PER DAY

MOUNTING

0 °C to 40 °C

12 / 24 Hour with

Automatic BST / GMT adjustment

6 target temperature settings per day

6 terminal plug in wall plate

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C-Stat 11-M and 17-M

Mains powered programmable room thermostat

Programmable room thermostats are widely recognised as one of the best ways in which to control central heating. Our

C-Stat programmable room thermostats have a large display and intuitive user interface, making them easy to set up and use. C-Stat uses a sophisticated time proportional integral

(TPI) algorithm for accurate temperature control and energy efficiency. Being mains powered these models won't need the batteries changing every two years.

C-Stat –M is ideal for control of combi boilers or extra heating zones where no thermostat has been fitted previously.

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Features

Voltage free contacts

Choice of 24 hour or 7 day versions

Up to six target temperature settings per day

Menu driven programming via large back-lit display, with prompts to aid the user

Automatic daylight saving time adjustment

Target temperature and actual room temperature indication

Temporary temperature override

Holiday programme

Tamperproof security code

Optional optimum start facility

Battery Reserve

Specification

C-Stat 11-M and 17-M

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Reduced energy costs

Minimal boiler cycling and reduced flow temperatures through use of sophisticated TPI control algorithms

Frost protection setting

No battery replacement required

Wireless and Battery versions are also available in this range

POWER SUPPLY

CONTACT TYPE

WIRING CONFIGURATION

230V 50Hz

Micro-disconnection

Voltage free c/o contacts (SPDT)

CONTACT VOLTAGE RATING 230V AC 50Hz (30V dc)

CONTACT CURRENT RATING 8A (1A inductive)

TEMPERATURE

DIFFERENTIAL 0.5°c

TEMPERATURE ACCURACY +/- 0.5°c at 21°c

IMPULSE RATING

DESIGN STANDARDS

DIMENSIONS

ENCLOSURE

Category II 2500V

BS EN 60730-2-9

100 x 120 x 26.5mm

Flame retardant thermoplastic

ENCLOSURE PROTECTION

POLLUTION DEGREE

INSULATION CLASS

OPERATING TEMPERATURE

RANGE

CLOCK

IP30

Degree 2

Double insulated

0 °C to 40 °C

12 / 24 Hour with

Automatic BST / GMT

SETTINGS PER DAY

MOUNTING adjustment

6 target temperature settings per day

6 terminal plug in wall plate

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ThermoPlus AS2-RF

Wireless Programmable Room Thermostat

The ThermoPlus AS2-RF is an intelligent wireless programmable thermostat, which transmits control signals to an RF receiver unit via Z-wave mesh radio technology.

The ThermoPlus range was designed following research showing the difficulties visually or dextrally impaired people have whilst using heating controls, it is easy to install and easy to use. Perfect where installing additional wiring is difficult and where a straightforward easy to use programmable thermostat is required.

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Wireless radio frequency connection

Colour coded, bright LED Warm/ Cool display and Braille markings on the main override buttons

Preset clock with battery back-up

Automatic BST / GMT time change

Audible and tactile feedback

Back lit LCD display

Specification

ASR-RF is a mains powered receiver for connecting where a mains supply is readily available.

AS2-RF thermostat transmits via Z wave mesh radio technology and is capable of operation in most domestic houses with an operating range of approximately 30 metres. Ideal for controlling combi boilers, it can be mounted in any suitable location without the need to disturb existing wiring or décor.

Operates from 3 standard AA batteries, with 2 years+ life and separate clock battery.

For day-to-day use only, 3 buttons are needed. The centre 'Warm/Cool' button changes the temperature state and the '+' and '-' buttons provide fine user adjustment as well as audible feedback. Each adjustment is immediately reflected in changes to the bright red and blue LED display.

The built-in clock is programmed to the correct time during manufacture and a built-in calendar will automatically adjust for summer and winter time changes, so there's never any need for user adjustment.

CONTACT RATING

AC

CONTACT TYPE

STANDBY TEMPERATURE

CASE MATERIAL

DIMENSIONS

DISPLAY

3 (1) Amps 230-240V

Micro disconnection

Voltage Free

SUPPLY

BATTERY TYPE

230V AC 50Hz

Lithium + 3AA (AS2-

RF)

Degree 2 POLLUTION DEGREE

DOUBLE INSULATED

ENCLOSURE PROTECTION

TEMPERATURE CONTROL

RANGE

Yes

IP30

OPERATING TEMPERATURE 0 °C to 40 °C

RANGE

+5 °C to +30 °C

+5°C to +10°C

Thermoplastic flame retardant

120 x 90 x 32 mm

Liquid Crystal, back lit

24 Hour

1 minute steps

CLOCK

DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

OPERATING PERIODS

PER DAY

PROGRAMME SETTINGS

OVERRIDE

MOUNTING

OPERATING FREQUENCY

15 minute steps

Warm – 3 per day

Auto, Standby

Instant Warm / Cool

6 pin plate

868 MHz

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ThermoPlus AS1, AS2 &

PRT1

Programmable Room Thermostats

Mains and battery powered programmable room thermostats designed for ease of use with a unique 3 button user interface. ThermoPlus allows a high and low temperature setting to be pre-programmed with simple user overrides available for the user.

Despite the simple user interface ThermoPlus contains the latest TPI energy saving software and can make a significant contribution to saving energy. ThermoPlus has voltage free contacts and is ideal for use with combi boilers.

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Simple 3 button operation

Colour coded, bright LED Warm / Cool display and

Braille markings on the main override buttons

Preset clock

Automatic BST/GMT time change

Preset or custom heating profiles

Back lit LCD display

Audible and tactile feedback

Fixed hypothermia protection (PRT1)

Frost protection setting

Specification

AS1 & PRT1

AS1 is mains powered for applications where a permanent mains supply is readily available.

PRT1 is identical to the AS1 but with a fixed hypothermia setting of 15C.

AS2

AS2 is battery powered for applications where no mains supply is readily available to operate the unit or an existing thermostat is being replaced.

Additional features include 3 standard AA batteries, 2 years+ battery life and separate clock power back-up.

Battery life is conserved by means of an 8 second auto power down mode to all indicator lights.

CONTACT RATING

AC

CONTACT TYPE

3 (1) Amps 230-240V

SUPPLY

RESERVE BATTERY TYPE

POLLUTION DEGREE

DOUBLE INSULATED

ENCLOSURE PROTECTION

Micro disconnection

Voltage Free

AS1/PRT1 – 230V AC

50Hz

AS2 – 3 x AA (LR6) batteries

Lithium battery

Degree 2

Yes

IP30

OPERATING TEMPERATURE 0 °C to 40 °C

RANGE

TEMPERATURE CONTROL +5 °C to +30 °C

RANGE

STANDBY TEMPERATURE

CASE MATERIAL

+5°C to +10°C

Thermoplastic flame

DIMENSIONS

DISPLAY retardant

120 x 90 x 32 mm

Liquid Crystal, back lit

24 Hour

1 minute steps

CLOCK

DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

OPERATING PERIODS

PER DAY

PROGRAMME SETTINGS

OVERRIDE

MOUNTING

15 minute steps

Warm – 3 per day

Auto, Standby

Instant Warm / Cool

AS1/PRT1 – 6 pin plate

AS2 – Standard wall box fixing

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ChannelPlus XL Series 2

Electronic Programmers

A range of electronic programmers that offer up to four independent channels and feature a large, easily read display and simple menu driven programming. Three and four channel models are made for multiple zone control with single and two channel models used with combi boiler systems and stored hot water systems.

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1, 2, 3 or 4 channels

24 hour or 7 day

Back-lit LCD display

Simplified menu driven programming

Advance and boost on each channel

Preset clock

Automatic Winter / Summer time changes

5 year warranty

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Specification

CHANNELPLUS H47XL

Programmer with 7 day setting over four independent channels. Designed for use with fully pumped central heating systems using four separate zone valves in addition to many other applications.

CHANNELPLUS H37XL

Programmer with 7 day setting over three independent channels. Designed for use with fully pumped central heating systems using three separate zone valves. Meets zoning requirements of Part L1 of the Building

Regulations.

CHANNELPLUS H37VXL

The same as the H37XL but with volt free contacts

CHANNELPLUS H27ZXL

Two channel with 7 day programming and independent timing of zone 1 and zone 2.

CHANNELPLUS H27XL

Two channel with 7 day programming and independent timing of heating and hot water.

CHANNELPLUS H21XL

Two channel with 24 hour programming and independent timing of heating and hot water.

CHANNELPLUS H17XL

Single channel time switch with full 7 day programming

CHANNELPLUS H11XL

Single channel time switch with 24 hour programming.

CONTACT RATING

CONTACT TYPE

SUPPLY

POLLUTION DEGREE

CLASS A SOFTWARE

3 (1) Amps 230V AC

Micro-disconnection

Voltage free (not

H37XL)

230V 50 Hz

Degree 2

Type 1 Control

ENCLOSURE PROTECTIONS IP30

DOUBLE INSULATED

OPERATING TEMPERATURE

Yes

RANGE

BATTERY LIFE

CASE MATERIAL

0° C to +40 °c

Lithium

Thermoplastic flame retardant

101 x 163 x 37 mm DIMENSIONS

DISPLAY

CLOCK

Back lit liquid crystal

24 hour or 12 hour

AM/PM

DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

PROGRAMME OPTIONS

MOUNTING

1 minute steps

10 minute steps

ON, OFF, All Day,

Auto & Holiday

OPERATING PERIODS

PER DAY 3 for each channel

OVERRIDE (EACH CHANNEL) 1 or 2 hour boost

1 or 2 hour extension to ON period

Instant advance

9 pin wall fixing plate

Voltage free contacts make both the H11 and H17 units ideal for combi boilers.

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ChannelPlus H37XL Series 2

Electronic Programmers

A three channel programmer giving independent timing of each channel on a 7 day programme.

Ideal for the control of two heating zones as well as hot water via separate thermostats and zone valves.

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Back-lit LCD display

Preset clock

Automatic Winter / Summer time changes

Simplified menu driven programming

Advance and boost on each channel

Full 7 day operation

Volt free version

5 year warranty

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Specification

ChannelPlus H37XL Series 2

Programmer with 7 day setting over 3 independent channels (e.g. Zones 1, 2 and 3 or hot water, heating 1 and 2)

Designed for use with fully pumped central heating systems using three separate 2 port zone valves.

Part L1 of the Building Regulations requires properties above 150 sq m floor space to have two separate heating zones.

This is an ideal application for the H37XL.

Also available:

ChannelPus H37VXL

The same as the H37XL but with volt free contacts

CONTACT RATING

CONTACT TYPE

SUPPLY

POLLUTION DEGREE

ENCLOSURE PROTECTION

DOUBLE INSULATED

OPERATING TEMPERATURE

RANGE

BATTERY LIFE

CASE MATERIAL

DIMENSIONS

DISPLAY

CLOCK

3 (1) Amps 230V AC

Micro-disconnection

Voltage free (not

H37XL)

230V 50 Hz

Degree 2

IP30

Yes

0° C to 40 °c

Lithium

Thermoplastic flame retardant

101 x 163 x 37 mm

Back lit liquid crystal

24 hour or 12 hour

AM/PM

DISPLAYED TIME

ADJUSTMENTS 1 minute steps

SWITCHED TIME

ADJUSTMENTS

PROGRAMME OPTIONS

10 minute steps

ON, OFF, All Day,

Auto & Holiday

OPERATING PERIODS

PER DAY 3 for each channel

OVERRIDE (EACH CHANNEL) 1 or 2 hour boost

1 or 2 hour extension to ON period

Instant advance

MOUNTING

RATED IMPULSE VOLTAGE

POLLUTION DEGREE

ENCLOSURE PROTECTION

9 pin wall fixing plate

Cat 2 – 2500V

Degree 2

Flame retardant thermoplastic

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ChannelPlus H47XL Series 2

Electronic Programmers

A four channel version of the ChannelPlus programmer for larger dwellings, featuring zone control of Hot Water and

Heating as well as many other zoning applications including

Underfloor heating.

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Full 7 day operation over 4 independent channels

Back-lit LCD display

Preset clock

Automatic Winter / Summer time changes

Simplified menu driven programming

Advance and boost on each channel

5 year warranty

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Specification

ChannelPlus H47XL Series 2

A user friendly 4 channel programmer designed for domestic use, providing advanced, easily programmed features.

The latest Building Regulations Domestic Heating

Compliance Guide requires each heating zone that exceeds 150 sq m to have independent time and temperature control.

CONTACT RATING

CONTACT TYPE

SUPPLY

POLLUTION DEGREE

CLASS SOFTWARE

ENCLOSURE PROTECTION

DOUBLE INSULATED

OPERATING TEMPERATURE

RANGE

BATTERY LIFE

CASE MATERIAL

3 (1) Amps 230V AC

Micro-disconnection

230V 50 Hz

Degree 2

Type 1 Control

IP30

Yes

0° C to 40 °c

Lithium

Thermoplastic flame retardant

101 x 163 x 37 mm

Back lit liquid crytal

DIMENSIONS

DISPLAY

CLOCK 24 hour or 12 hour

AM/PM

DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

PROGRAMME OPTIONS

1 minute steps

10 minute steps

ON, OFF, All Day,

Auto & Holiday

OPERATING PERIODS

PER DAY 3 for each channel

OVERRIDE (EACH CHANNEL) 1 or 2 hour boost

MOUNTING

RATED IMPULSE VOLTAGE

POLUTION DEGREE

ENCLOSURE PROTECTION

1 or 2 hour extension to ON period

Instant advance

9 pin wall fixing plate

Cat 2 – 2500V

Degree 2

Flame retardant thermoplastic

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CentaurPlus Series 2

Electronic time controls

CentaurPlus single channel time switches and two channel programmers are highly popular and affordable with the latest Series 2 units now featuring an upgraded back lit display screen and incorporating an automatic GMT/BST clock.

All models feature an industry standard six pin backplate which permits easy replacement/upgrade with the C11 and

C17 controls being suited for use with combi boilers and the

C21 and C27 versions for non combi boiler installations where a hot water cylinder is in use.

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24 hour and 7 day options

Up to 3 ON/OFF's a day

Hot water boost and central heating advance

Programme options: ON, OFF, ALL DAY or AUTO

Mains powered with battery back up

Standard wall plate – Simple to plug in and replace

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CentaurPlus C27

CentaurPlus C21

CentaurPlus C17

CentaurPlus C11

Specification

CentaurPlus C27

Two channel 7 day control allowing independent time control of central heating and hot water

CentaurPlus C21

Simple, low cost 24 hour version of the C27

CentaurPlus C17

Single channel, 7 day time control suitable for combi boiler applications, an extra heating zone or the pump on a solid fuel boiler.

CentaurPlus C11

Simple, low cost 24 version of the C17

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CONTACT RATING

CONTACT TYPE

3 (1) Amps 230V AC

Micro-disconnection

Voltage free (C11 &

SUPPLY

C17 only)

230V AC 50Hz only

POLLUTION DEGREE Degree 2

CLASS A SOFTWARE Type 1 Control

OPERATING TEMPERATURE 0 °C to +40 °C

RANGE

BATTERY LIFE Minimum 10 months continuous operation

CASE MATERIAL

DIMENSIONS

DISPLAY

CLOCK

Thermoplastic flame retardant

84 x 150 x 29mm

Back lit liquid crystal

12 Hour AM/PM

Auto BST/GMT changeover

1 minute steps DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

OPERATING PERIODS

10 minute steps

C11 & C17 – 3 per day

C21 & C27 – 3 per day for CH & 3 per day for

HW

C17 & C27 – Separate programmes possible for each day of the

OVERRIDE

MOUNTING week

C11 & C17 – 1 hour boost, 1 hour extension to ON period & Instant

Advance

C21 & C27 – 1 hour boost (HW only), 1 hour extension to ON period (HW only) &

Instant advance (CH only)

6 terminal plug in wall plate

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Specification

CentaurPlus ZW

The CentaurPlus ZW timeswitch and thermostat communicate using proven Z wave wireless technology with the installation highly suited for use with combi boilers. It is ideal as a system upgrade, in most cases requiring no wiring. The back plate on the CentaurPlus

ZW is an industry standard 6 pin unit usually enabling a simple push fit replacement. The HRT4-ZW is battery powered and requires no disruptive wiring, enabling it to be positioned in the most efficient area of a room.

The thermostat incorporates the latest TPI energy saving software and Z wave wireless technology. It features a back lit display, conventional knob temperature adjustment, set temperature display and displays the actual room temperature at a touch of the dial.

CentaurPlus ZW combined wireless room stat and timeswitch

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Suitable for combi boilers

Volt free contacts

Automatic BST/GMT time change

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Back lit display

Boost and Advance

Helps to meet Part L of Building Regs

Built in Z wave receiver

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Industry standard 6 terminal wall plate

ZW wireless technology

TPI energy saving software

Clear backlit display

Temperature range 5-30°C

Battery operated for wire free installation

CONTACT RATING

CONTACT TYPE

3 (1) Amps 230V AC

Micro-disconnection

SUPPLY

Voltage free

230V AC 50Hz only

POLLUTION DEGREE Degree 2

CLASS A SOFTWARE Type 1 Control

OPERATING TEMPERATURE 0°C to +40°C

RANGE

BATTERY LIFE

CASE MATERIAL

Minimum 10 months continuous operation

Thermoplastic flame retardant

DIMENSIONS

DISPLAY

CLOCK

84 x 150 x 29mm

Back lit liquid crystal

12 Hour AM/PM

Auto BST/GMT changeover

1 minute steps DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

10 minute steps

OPERATING PERIODS PER 3 per day (Separate

DAY programmes possible for each day of the

OVERRIDE

MOUNTING week)

1 hour boost, 1 hour extension to ON period & Instant

Advance

6 terminal plug wall plate

TRANSMITTER FREQUENCY 868MHz

HRT4-ZW ROOM THERMOSTAT

POWER SUPPLY 2 x AAA alkaline

OPERATING TEMPERATURE 0°C to +40°C

RANGE

TEMPERATURE RANGE

CASE MATERIAL batteries

5°C to 30°C

Thermoplastic flame retardant

DIMENSIONS

RATED IMPULSE VOLTAGE

86 x 86 x 36.25mm

Cat 1 – 1500v

ENCLOSURE PROTECTION Ip30

TRANSMITTER FREQUENCY 868MHz

DESIGN STANDARD EN60730 – 2-9

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ServicePlus Series 2

Service Interval Programmers

ServicePlus is a range of programmers and time switches developed to facilitate compliance with the Gas Safety

(installation and Use) Regulations 1998. Although not intended to replace the normal servicing regime, ServicePlus can act as a supplementary reminder to enabling compliance.

Features an upgraded back lit display screen and incorporates an automatic GMT/BST clock.

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Service interval safety check clock

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Can fully or partially shut down the system once a service period is overdue

Service period is set by installer using unique key code

Facilitates compliance with Gas Safety Regulation 36

Building Regs Part L compliant

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CentaurPlus S27

CentaurPlus S21

CentaurPlus S17

CentaurPlus S11

Specification

The ServicePlus service interval timer range is based on the popular Centaurplus range of domestic central heating programmers and timeswitches. All the functions and facilities available in the CentaurPlus range are also available in the equivalent ServicePlus model. E.G. S27R is based on C27, S17R is based on C17 etc.

The ServicePlus range of programmers and time switches are designed to carry out a full or partial boiler shutdown once the servicing date has become overdue.

The Installer can set the ServicePlus so that either a full shutdown will occur after a 28 day warning period of the boiler service becoming due or partial shutdown can be selected where a 15 minute period of heating and hot water will occur every hour. These 15 minute periods will occur every hour but never consecutively from one hour to the next.

If programmed on installation, the 15 minute 'On' periods will reduce the effectiveness of the heating system so that it becomes uncomfortable for the occupier without it providing no heating at all. This should have the effect of encouraging the householder to call the service engineer to check the system.

(For more detailed information on these products, please refer to CentaurPlus Series 2)

S27R 7 day programmer

S21R 24 hour programmer

S17R 7 day timeswitch

S11R 24 hour timeswitch

CONTACT RATING

CONTACT TYPE

3 (1) Amps 230V AC

Voltage free (S11 & S17 only) with optional mains switched supply

SUPPLY 230V AC 50Hz only

POLLUTION DEGREE Degree 2

CLASS A SOFTWARE Type 1 Control

OPERATING TEMPERATURE 0°C to +40°C

RANGE

BATTERY LIFE Minimum 10 months continuous operation

CASE MATERIAL Thermoplastic flame retardant

84 x 150 x 29mm DIMENSIONS

DISPLAY

CLOCK

Back lit liquid crystal

12 Hour AM/PM

1 minute steps DISPLAYED TIME

ADJUSTMENTS

SWITCHED TIME

ADJUSTMENTS

10 minute steps

OPERATING PERIODS PER S11 & S17 – 3 per day

DAY S21 & S27 – 3 per day for CH & 3 per day for

HW

S17 & S27 – Separate programmes possible for each day of the week

OVERRIDE S11 & S17 – 1 hour boost, 1 hour extension to ON period & Instant

Advance

S21 & S27 – 1 hour boost (HW only), 1

MOUNTING hour extension to ON period (HW only) &

Instant advance (CH only)

6 terminal plug wall plate

22

425 Series

Electro-mechanical Programmers

425 series mechanical programmers are the simplest way to control hot water and central heating in the home.

Ÿ

Simple to use with easily understood settings adjusted in seconds

Ÿ

Rotating 24 hour dial and tappet arrangement

Ÿ

Easy to install using a nine pin backplate

Ÿ

Advance control to allow manual override ON or OFF

Ÿ

Programme options: ON, OFF, All Day or Auto

23

425 Diadem

425 Tiara

425 Coronet

Specification

425 DIADEM

This twin circuit, hot water and central heating programmer, with indicator lights, has 16 programmes available for fully pumped systems, including independent programming of heating and hot water and 10 programmes for gravity hot water / pumped heating systems.

425 TIARA & DIADEM

CONTACT RATING

CONTACT TYPE

MOTOR

The Diadem is ideal for gravity systems and fully pumped systems with zone valves.

425 TIARA

The Tiara has all the capability and features of the 425

Diadem, but without the indicator lights.

POWER CONSUMPTION

DIRT PROTECTION

MOISTURE PROTECTION

ENCLOSURE PROTECTION

MAXIMUM OPERATING

TEMPERATURE

DIAL SETTING

The Tiara is ideally suited for both gravity systems and fully pumped systems with either mid-position or zone valves.

DIMENSIONS

MOUNTING

425 CORONET

A single circuit timeswitch for straight forward, accurate time control.

425 CORONET

CONTACT RATING

The 425 Coronet is particularly suitable for combi boiler systems, warm air systems and extra zone control.

CONTACT TYPE

MOTOR

• • •

Double circuit 6 (2.5)

Amps 230V AC

Micro-disconnection changeover Voltage

Free

Synchronous 230V

50Hz

Double Insulated

2.5W

Normal Situations

Ordinary

Ip20

+55°C

2 ON, 2 OFF Tappets

Min. ON/OFF period

45 mins

152mm x 107mm x

39mm

9 Pin wall fixing plate

POWER CONSUMPTION

DIRT PROTECTION

MOISTURE PROTECTION

ENCLOSURE PROTECTION

MAXIMUM OPERATING

TEMPERATURE

DIAL SETTING

DIMENSIONS

MOUNTING

Single circuit 13 (6) A

230V AC

Micro-disconnection changeover Voltage

Free

Synchronous 230V

50Hz

Double Insulated

2.5W

Normal Situations

Ordinary

Ip20

+55°C

2 ON, 2 OFF Tappets

Min. ON/OFF period

45 mins

152mm x 107mm x

39mm

9 Pin wall fixing plate

24

HRT4-ZW and HRT4-B

Electronic Room Thermostats

Wireless or wired, this range of purpose designed room thermostats from Horstmann offer the latest energy saving control technology combined with established Horstmann design and manufacturing expertise, making them suitable for use in most types of heating system.

They are also perfect partners for use with Horstmann

Programmers and Zone valves.

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Wireless or wired (battery operated) versions

TPI temperature control software

Clear backlit digital display

Temperature range 5-30°C

Easy to install and use

25

Specification

HRT4-ZW with ASR-ZW receiver

Wireless Z-wave electronic room thermostat and ASR-

ZW receiver with TPI energy saving software – avoids disruptive and time consuming wiring – compatible with most heating systems.

With proven Z-wave wireless technology using the

868.42MHz operating frequency, the thermostat unit features a constant RF status display with its receiver being mains powered with volt free contacts.

HRT4-ZW

POWER SUPPLY 2 x AAA alkaline

POLLUTION DEGREE batteries

Degree 2

TEMPERATURE ACCURACY +/- 0.5°C

TEMPERATURE RANGE 5 °C - 30 °C

OPERATING TEMPERATURE 0° C - 40 °C

RANGE

CASE MATERIAL Thermoplastic flame

DIMENSIONS retardant

86 x 86 x 36.25mm

RATED IMPULSE VOLTAGE Cat 2 – 2500v

ENCLOSURE PROTECTION

DESIGN STANDARD

IP30

EN60730 – 2-9

TRANSMITTER FREQUENCY 868 MHZ

HRT4-B

The HRT4-B is a wired battery operated room thermostat with TPI energy saving software – for use with new installations or as a replacement for existing room thermostats.

The HRT4-B has 3 amp volt free change over contacts – making it ideal for use with combi boilers as well as conventional mains operated equipment.

Designed to look good, these thermostats will out perform many older styles of thermostat and can often produce savings in the order of 10% over and above those achieved by traditional units using older technology.

The TPI settings are adjustable for Gas, Oil and Electric systems and the display shows 1°C resolution, heating ON symbol, target and actual temperatures at the touch of the dial and an energy saving back light that switches off after 7 seconds.

ASR-ZW

POWER SUPPLY

CONTACT TYPE

230 V AC 50 Hz

Micro disconnection

Voltage free

CONTACT RATING

POLLUTION DEGREE

3 (1) Amps 230 V AC

Degree 2

OPERATING TEMPERATURE 0° C - 40 °C

RANGE

CASE MATERIAL Thermoplastic flame retardant

DIMENSIONS 86 x 86 x 36.25mm

RATED IMPULSE VOLTAGE Cat 2 – 2500v

ENCLOSURE PROTECTION IP30

Available in wireless and wired versions – for new and replacement situations – there is a

Horstmann thermostat to suit most installations.

The wireless version employs the latest Z-wave radio frequency (RF) technology resulting in a highly reliable and trouble free wireless connection with minimal setting up procedures.

Thermostat battery life is in excess of two years using 2 standard AAA batteries which are supplied. A battery low indication tells the user when the batteries need changing.

HRT4-B

POWER SUPPLY

CONTACT TYPE

2 x AAA alkaline batteries

Micro disconnection

CONTACT RATING

POLLUTION DEGREE

Voltage free changeover

3 (1) Amps 230 V AC

Degree 2

TEMPERATURE ACCURACY +/- 0.5°C

TEMPERATURE RANGE 5 °C - 30 °

CASE MATERIAL Thermoplastic flame

DIMENSIONS retardant

86 x 86 x 36.25mm

RATED IMPULSE VOLTAGE Cat 2 – 2500v

ENCLOSURE PROTECTION

DESIGN STANDARD

IP30

EN60730 – 2-9

26

HRT4-A, HFT4 and HTT4

Mains Operated Electronic Room Thermostats

This range of purpose designed room thermostats from

Horstmann offer the latest energy saving control technology combined with established Horstmann design and manufacturing expertise. This makes them suitable for use in most types of heating system that respond to a 230 volt mains electrical On/Off signal.

They are also perfect partners for use with Horstmann

Programmers and Zone valves.

Ÿ

Ÿ

Ÿ

Ÿ

230 volt mains operation

TPI temperature control software

Standard, Frost and Tamperproof versions

Easy to install and use

Designed to look good, these thermostats will out perform many older styles of thermostat and can often produce savings in the order of 10% over and above those achieved by traditional units using older technology.

The temperature control accuracy of +/- 0.5°C and different

TPI settings – for Gas, Oil and Electric systems – will reduce the temperature swing that normally occurs with older style thermostats. As a consequence these thermostats will help to save energy as the control algorithm allows the boiler to operate in condensing mode for longer periods.

27

Specification

HRT4-A – Room Thermostat

Mains powered, electronic unit with TPI technology for new and replacement installations.

Temperature setting range 5-30 °C

HTT4 – Tamper proof Room

Thermostat

A tamper proof version of the HRT4-A for use in public areas or other situations where subsequent temperature adjustment is not required/desirable.

Ÿ

Internal setting dial

Ÿ

Temperature setting range 10-30°C

POWER SUPPLY

CONTACT RATING

CONTACT TYPE

230v 50Hz

3 (1) Amps 230V AC

Micro-disconnection

POLLUTION DEGREE Degree 2

TEMPERATURE ACCURACY +/- 0.5°C (at 21 °C with

TEMPERATURE RANGE

0.5 amp load)

HRT4-A – 5-30°C

HTT4 – 10-30°C

HFT4 – 0-20°C

Thermoplastic flame CASE MATERIAL

DIMENSIONS retardant

86 x 86 x 36.25mm

RATED IMPULSE VOLTAGE Cat 2 – 2500v

ENCLOSURE PROTECTION IP30

DESIGN STANDARD EN60730 – 2-9

HFT4 – Frost Thermostat

Electronic mains operated frost protection thermostat.

Ensures heating will switch on whenever frost conditions are detected.

Ÿ

Ÿ

Internal setting dial

Temperature setting range 0-20°C

28

HCT2

Hot Water Cylinder Thermostat

This cylinder thermostat is fitted to the hot water cylinder to ensure that water temperature is controlled to a safe temperature whilst also saving energy by stopping uncontrolled heating of the hot water.

This type of cylinder stat is intended for use as part of a fully pumped heating and hot water system in conjunction with motorised zone valves a room thermostat and a two channel central heating programmer.

Ÿ

230V mains operation

Ÿ

Adjustable temperature range 20°C to 90°C

Ÿ

16 Amp changeover (S.P.D.T.) contacts

Ÿ

Switching differential of approximately 8°C

Ÿ

Bimetallic sensor system

29

Specification

Cylinder Thermostat – HCT2

With an adjustable temperature range of between 20°C to 90°C, the Horstmann cylinder thermostat is suitable for mounting on either domestic hot water cylinders or large heating pipes.

CONTACT CONFIGURATION SPDT

OPERATING VOLTAGE

SWITCH CURRENT

220/240V 50/60Hz

250V AC

TEMPERATURE RANGE

16 Amps maximum

+20 °c to +90 °C

SWITCHING DIFFERENTIAL +8 °C Approx

ENCLOSURE PROTECTION IP40

SENSOR SYSTEM

DIMENSIONS

Bimetallic

105 x 70 x 53 mm

30

ZonePlus Z Series

Motorised Valves

A range of motorised valves that combine proven controls technology with the latest Horstmann design features, permitting easy installation and maintenance.

There are 3 models in the range: 22mm and 28mm 2 port spring return valves and a 22mm 3 port mid position diverter valve.

Ÿ

Ÿ

Ÿ

Ÿ

Easily replaceable actuator

Industry standard fittings and wiring

Extra long 1.4 metre cable

Hansen Class F Synchron motor

31

Specification

ZonePlus Z222

ZonePlus Z228

ZonePlus Z322

ZonePlus Z322

22mm mid-position diverter valve complete with compression fittings.

ZonePlus Z222

22mm spring return zone valve with auxiliary switch complete with compression fittings.

ZonePlus Z228

28mm spring return zone valve with changeover auxiliary switch complete with compression fittings.

2 Port

3 Port 22mm

28mm

CONTACT AND

POWER SUPPLY

POWER CONSUMPTION

3 Amp 250V AC

230V 50Hz

5W

LEAD SUPPLIED 1.4 Metre, Industry

Standard colour

MAXIMUM AMBIENT

TEMPERATURE coding.

50°C

MAXIMUM FLUID

TEMPERATURE

88°C

MAXIMUM DIFFERENTIAL 0.5 bar

PRESSURE

MAXIMUM STATIC

PRESSURE

8.6 bar

MATERIALS

BALL

COVER

VALVE BODY

PIPE FITTING SIZE

Ethylene Propylene

Dio Mono (EPDM)

Thermoplastic

Brass

Z222 & Z322 – 22mm compression

(supplied)

Z228 – 28mm compression

(supplied)

32

Electrisaver

Electronic Timer

The Electrisaver is a simple push button electronic timer that saves energy by remembering to switch off an appliance when you might forget!

Suitable for loads up to 3kW, Electrisaver is a perfect boiler override or extension timer and can also be used on electrical equipment such as panel heaters, immersion heaters, heated towel rails and oil filled radiators.

Ÿ

Ÿ

Flush or surface mounting

Wiring is simple with easy access terminals

33

Specification

Electrisaver

Simply press the boost button and walk away, safe in the knowledge that if you forget, Electrisaver won't!

The 3kW rating makes Electrisaver suitable for use with immersion heaters with a range of applications in shops, offices, schools, church halls, student accommodation and all around the home.

Ÿ

Ÿ

Ÿ

Ÿ

Oil fired radiators

Towel rails

Boiler override

Panel heaters

There are three Electrisaver models which offer preset time periods.

Ÿ

E15 - 15-60 minutes

Ÿ

E30 - 30-120 minutes

Ÿ

E246 - 2-6 hours

CONTACT RATING

SUPPLY

POLLUTION DEGREE

ENCLOSURE PROTECTION

SHOCK PROTECTION

LIVE PARTS

13 Amps 230V AC

Suitable for loads up to 3kW

230V 50Hz

Degree 2

IP30

Class 1

Enclosed

OPERATING TEMPERATURE 0°c to 35°C

RANGE

DIMENSIONS 87mm x 87mm x

16mm (Flush

MOUNTING mounting) or 51mm

(Surface mounting)

Single gang moulded box (Min. 35mm deep, not supplied)

34

Electronic 7 Series 3

Immersion Heater Control

The Horstmann Electronic 7 is the digital equivalent to the renowned Horstmann Economy 7 Quartz timer and is designed for use with Economy 7 and other more recent cheap rate tariff arrangements.

Where hot water is heated by off peak electricity it is important that the immersion heater controller offers ease of use coupled with the most efficient performance. This is where the Horstmann Electronic 7 Series 3 controller comes into its own.

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Compatible with most cheap rate or off peak tariff structures, the Electronic 7 is fully interchangeable with all past and present Horstmann Economy 7 controllers

Built in clock – automatic Summer / Winter time change

Up to three off peak settings per 24 hours

Programmable and manual boost

Programme security feature

Suitable for use with single, dual or twin element immersion heaters

35

Specification

Electronic 7 Series 3

The Electronic 7 is designed to control one or two 3kW immersion heaters, utilizing off peak electricity tariffs to provide a tank full of hot water each morning.

Additional off peak settings are available to take advantage of the latest off peak tariff arrangements.

A boost button is provided to top up the hot water if supplies are running low and an automatic boost setting to provide a pre-programmed daily boost is also available.

The Electronic 7 Series 3 is interchangeable with previous Economy 7 controllers using the standard size

Economy 7 wall box and plug in connectors.

A lithium battery provides more than adequate back up to maintain time and programme settings in the event of a power failure.

CONTACT RATING

CONTACT TYPE

13 Amps 230V AC

Suitable for immersion heaters up

to 3kW

Micro-disconnection

SUPPLY

POLLUTION DEGREE

DIMENSIONS

CLOCK on control

Disconnection to immersion heaters on double-pole rocker switch

230V 50Hz

Degree 2

MOISTURE PROTECTION

ENCLOSURE PROTECTION

SHOCK PROTECTION

LIVE PARTS

Normal situations

Ordinary

IP30

Class 1

Enclosed

OPERATING TEMPERATURE 0°c to 35°C

RANGE

BATTERY RESERVE Approximately 2 years total power disconnection

170 x 115 x 60 mm

(Excluding rocker switch)

AM/PM Indication

PROGRAMME OPTIONS

BEAB APPROVED

Winter/Summer indication

OFF PEAK - Up to 3

On/Off time periods

BOOST -

Programmable automatic boost and one hour manual boost

Yes

36

Economy 7 Quartz

Immersion Heater Control

Designed for use with Economy 7 off peak rate overnight electricity, the Economy 7 Quartz is the standard by which all other water heating controls are judged and is the alltime best seller in water heating controls.

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Quartz controlled within 10 minutes a year

Rechargeable battery keeps time during power interruptions

Summer and winter time settings instantly visible

Large terminals and back box for easy installation

Indicator lights show whether on-peak or off-peak power is being used

Up to 60 minute boost means extra hot water at any time

Industry standard wall box and connections

37

Specification

Economy 7 Quartz

A proven, reliable and accurate unit, the Economy 7

Quartz is easy to install and set, providing a tankful of hot water to start each day utilizing Economy 7 off peak rate overnight electricity. The manual boost timer provides extra hot water in the day time – should it be needed.

E 7 Quartz 2 Hour

The E7 Quartz 2 hour model has the same specification as the Economy 7 Quartz but with 0 – 120 minutes boost timer.

CONTACT RATING

CONTACT TYPE

SUPPLY

POLLUTION DEGREE

MOISTURE PROTECTION

ENCLOSURE PROTECTION

SHOCK PROTECTION

13 Amps 230V AC

Suitable for immersion heaters up

to 3kW

Micro-disconnection on control

Disconnection to immersion heaters on double-pole rocker switch

230V 50Hz

Degree 2

Ordinary

IP30

Class 1

LIVE PARTS

IMPULSE RATING

BATTERY RESERVE

DIMENSIONS

Enclosed

4000V

OPERATING TEMPERATURE 0°c to +35°C

RANGE

150 hours

170 x 115 x 60 mm

(Excluding switches)

CLOCK

PROGRAMME OPTIONS

AM/PM Indication

Winter/Summer indication

OFF PEAK –

Adjustable between

4½ & 7 hours

BOOST – Economy 7

Quartz – 0-60 minutes

E7 Quartz 2 Hour – 0-

120 minutes

BEAB APPROVED Yes

38

BX2000

Water Heating Boost Control

This simple boost control is intended for use with electric water heating systems where the immersion heater(s) are controlled by the Electricity Company's Radio Teleswitch,

Radio Telemeter or Tariff time switch.

The BX2000 allows the user to 'top up' the hot water if extra supplies are needed during the day time with the main water heating taking place overnight using off peak electricity.

Ÿ

Ÿ

Ÿ

Makes the most effective use of the latest cheap-rate tariff structures, electronically

1 hour or 2 hour boost

Always gives priority to off-peak supply

39

Specification

BX2000

Ÿ

Ÿ

Ÿ

Ÿ

Automatically cancels any boost that has been selected prior to the off-peak supply becoming available

Indicator lights show when 'boost' or 'off-peak' are operational

Incorporates two double pole switches: one for 24 hour supply: one for off-peak (cheap rate) supply

Accepts all incoming and outgoing wiring for single, dual or two separate 3kW immersion heater applications

CONTACT RATING

CONTACT TYPE

13 Amps 230V AC

Suitable for immersion heaters up to 3kW

Disconnection to

POWER SUPPLY

POLLUTION DEGREE

ENCLOSURE PROTECTION

SHOCK PROTECTION

LIVE PARTS immersion heater on double-pole switch

230 V 50Hz

Degree 2

IP30

Class 1

Enclosed

OPERATING TEMPERATURE 0 °C to 35 °C

RANGE

TIME PERIOD 1 or 2 hours

DIMENSIONS

BRITISH STANDARDS

170 x 115 x 62 mm

Designed to meet BS-

EN 60730-2-7

40

E7BX

Water Heating Boost Control

This simple boost control is intended for use with electric water heating systems where the immersion heater(s) are controlled by the Electricity Company's Radio Teleswitch,

Radio Telemeter or Tariff time switch.

The E7BX allows the user to 'top up' the hot water if extra supplies are needed during the day time with the main water heating taking place overnight using off peak electricity.

Ÿ

Ÿ

Ÿ

Designed to accept wiring from both 24 hour and off peak circuits

Adjustable 0-120 minute run-back boost timer

Simple to install and use

41

Specification

E7BX

Ÿ

Ÿ

Ÿ

Ÿ

Ÿ

Simple to install and use

Boost period adjustable between 0 and 120 minutes

Neon indicator shows when boost timer is running

Can be used with one or two immersion heaters

Suits earth-leakage circuit breaker installations

CONTACT RATING

CONTACT TYPE

13 Amps 230V AC

Suitable for immersion heaters up to 3kW

Disconnection to 'off

POWER SUPPLY

POLLUTION DEGREE

ENCLOSURE PROTECTION

SHOCK PROTECTION peak' immersion heater on double-pole switch

230 V 50Hz

Degree 2

IP30

Class 1

LIVE PARTS Enclosed

OPERATING TEMPERATURE 0 °C to 35 °C

RANGE

TIMER BOOST DURATION

DIMENSIONS

BRITISH STANDARDS

0-120 minutes

170 x 115 x 56 mm

Designed to meet BS-

EN 60730-2-7

BEAB APPROVED

42

Electric Water Heating Controls - Schematic System Diagrams

These diagrams show the schematic installation wiring for each of the

Horstmann electric water heating controls

E7 & E7Q Single element immersion heater installation

Immersion heater circuit consumer unit

E7 & E7Q Twin element immersion heater installation consumer unit

Immersion heater circuit

Boost

Electricity Company's equipment

E7 & E7Q Dual element immersion heater installation

Immersion heater circuit consumer unit

Night Rate

Electricity Company's equipment

Boost

BX2000 Twin element immersion heater installation

24 hr consumer unit

Boost

Electricity Company's equipment

Off-peak consumer unit

Night Rate

Night Rate

Electricity Company's equipment

BX2000 & E7BX Single element immersion heater installation

24 hr consumer unit

Electricity Company's equipment

Off-peak consumer unit

E7BX Twin element immersion heater installation

24 hr consumer unit

Double pole

Boost isolator

Electricity Company's equipment

Night Rate

Off-peak consumer unit

43

Installation and connection must be carried out by a suitably qualified person and in accordance with the current edition of the IET wiring regulations

Internal Wiring Diagrams

Programmers and Timeswitches

These diagrams are intended for guidance only and show the switched outputs for each model.

Full system wiring diagrams are supplied with each set of installation instructions.

ChannelPlus H11XL / H17XL ChannelPlus H21XL / H27XL / H27ZXL

N L 1 2 3 4 5 6

N L 1 2 3 4 5 6

E N

MAINS

SUPPLY

L ON OFF

TIMED OUTPUT

ChannelPlus H37XL

N L

E N

MAINS

SUPPLY

L

1 2 3 4 5 6

ON OFF

CH

ZONE 1

ON OFF

CH

ZONE 2

ON OFF

HW

ChannelPlus H47XL

N L

E N

MAINS

SUPPLY

L

1 2 3 4 5 6

ON COM ON ON COM ON

CentaurPlus C11 / C17

ChannelPlus H37VXL

N L 1 2 3 4 5 6

E N L ON COM ON COM ON COM

MAINS

SUPPLY

CH

ZONE 1

CH

ZONE 2

HW

When used to control MAINS VOLTAGE SYSTEMS Terminals L,2,4 and 6 should be electrically linked by means of a suitable piece of sleeved conductor When used to control LOW VOLTAGE SYSTEMS these links MUST NOT be fitted

CentaurPlus C17-ZW

N L 1 2 3 4

230V 50Hz COMM OFF ON

The CentaurPlus ZW has voltage free contacts. A link L-2 is required for mains voltage applications

CentaurPlus C21 / C27

N L

230V 50HZ

1 2 3 4

COMM OFF ON

N L 1 2 3 4

230V 50HZ

HW

OFF

CH

OFF

HW

ON

CH

ON

Installation and connection must be carried out by a suitably qualified person and in accordance with the current edition of the IET wiring regulations

44

425 Tiara / Diadem 425 Coronet

N L 1 2 3 4 5 6

E N

MAINS

SUPPLY

L ON

TIMED

OUTPUT

OFF ON

TIMED

OUTPUT

OFF

ServicePlus S11R & ServicePlus S17R

N L 1 2 3 4 5 6

E N

MAINS

SUPPLY

L ON

TIMED

OUTPUT

OFF

ServicePlus S21R & ServicePlus S27R

N L 1 2 3 4

230V 60Hz MAINS LIVE TO COMM ON

IN BOILER

N L 1 2 3 4

230V 50HZ HW

OFF

CH HW

OFF ON

CH

ON

Thermostats

These diagrams are intended for guidance only and show the switched outputs for each model.

Full system wiring diagrams are supplied with each set of installation instructions.

Programmable Room Thermostats

C-Stat B C-Stat M

COMMON

1 2 3 4

CALL FOR

HEAT

1 2 3 4

CALL

L

CALL FOR

HEAT

N

230V

MAINS

SUPPLY

45

Internal

Electronics

C-Stat ZW Receiver

N L 1 2 3 4

230V 50Hz COMM OFF ON

ThermoPlus AS1 / PRT1

N L 1 2 3 4

230V 50HZ COMM ON

Installation and connection must be carried out by a suitably qualified person and in accordance with the current edition of the IET wiring regulations

4.5V

ThermoPlus AS2

1 LIVE (LINE)

2 LOAD (HEAT)

3

NOT USED

4

N (PARKING)

CentaurStat 1/7

4

N (PARKING)

3

LOAD (COOL)

2

LOAD (HEAT)

1

L (LINE)

Room Thermostats

HRT4 - A / HTT4 / HFT4

1 2 3 4

230V

50Hz

Mains supply

L

N

E

Switched live

(call)

ThermoPlus AS2-RF Receiver

N L 1 2 3 4

230V 50Hz COMM OFF ON

The reciver has Voltage Free contacts. A link between Live and terminal 2 is required for mains Voltage applications

HCT2 - Cylinder Stat

COM

2 1

SAT CALL

HRT4-B

COMMON

1 2 3 4

CALL FOR

HEAT

HRT4-ZW Receiver

Internal

Electronics

N L 1 2 3 4

230V 50Hz COMM OFF ON

The receiver has Voltage Free contacts A link between live and terminal 2 is required for mains voltage applications.

HRT3

4

N

3

LOAD (HEAT)

2

DO NOT USE

1

L (LINE)

Installation and connection must be carried out by a suitably qualified person and in accordance with the current edition of the IET wiring regulations

46

TPI energy saving software

where it is used – the benefits

Time Proportional Integral (TPI) energy saving software is key to the performance of thermostats in a number of

Horstmann's central heating controls – notably the HRT range of room thermostats, C-Stat programmable room thermostats, the CentaurPlus ZW combined wireless room 'stat and time-switch and the ThermoPlus range of easy-to-use programmable room thermostats.

TPI has proven energy saving features that have been independently assessed (by TACMA) to save the householder up to

10% annually on fuel costs.

So, how does it work?

Traditionally, room stats use either mechanical bellows or thermally operated switches. These are much less accurate in maintaining the room temperature at the 'set point' as they produce fairly large swings of temperature caused by the differential between the on and off switch point. In turn, this causes the boiler to fire inefficiently and often over-heat the room.

A thermostat controlled by TPI software makes a series of precise calculations once it has entered the control or proportional band. When set to 6 cycles per hour the software will calculate the amount of heat needed during each 10 minute period and switch the boiler on for a proportion of that 10 minutes to maintain the set temperature.

This stops the wide fluctuations in temperature that can occur with conventional thermostats. The TPI software then 'fine tunes' the calculations to constantly review performance and carry out further, fine, adjustments if necessary.

When used with a condensing boiler, the TPI thermostat will help to save energy as the control algorithm allows the boiler to operate in condensing mode more consistently compared to older types of thermostat. This effect is achieved by keeping the return water temperature below the critical 56ºC needed for the boiler to operate in condensing mode for longer.

0

0

10

10

20

20

30

30 40

40

50

50

60

BOILER ON

TIMES

60

Example 1: TPI set to 6 cycles per hour giving 50% load every 10 minute cycle

BOILER ON

TIMES

Example 2: TPI set for 6 cycles per hour giving approximately 25% load very 10 minute cycle

Thermostat comparison set at 21 °C

20 °C

19 °C

18 °C

17 °C

16 °C

15 °C

25 °C

24 °C

23 °C

22 °C

21 °C

HRT4-B running TPI 6

Time (1 hour intervals)

Actual test results of 3 common mechanical room thermostats and the Horstmann

HRT4-ZW room thermostat

47

Optimum start

C-Stat programmable room thermostat

The Horstmann C-Stat is an electronic programmable room thermostat that combines time and temperature control in a stylish design that features simple, menu driven programming and a clear, back lit user interface.Among its many new features the C-Stat features an

(optional) optimum start function.

C-Stat also uses the latest TPI energy saving software for accurate temperature control.

TPI is highly accurate and sensitive and can produce savings of as much as 10% annually* on central heating fuel costs.

Models in the range feature 24 hour and 7 day programming with up to six temperature settings per day. The intuitive interface ensures they are easy to set up and use.

The Optimum Start feature:

This (optional) setting will allow the C-Stat to anticipate the next set temperature and switch on the central heating up to 2 hours in advance to ensure the set room temperature has been reached by the time it is due to take effect.

Optimum Start

As a consequence the 'switch on' time could take place anywhere between 2 hours and zero minutes before the set time.

It is assumed that the heating can increase at a rate of 2°C per hour.

Therefore, the maximum extent of this setting is that it can switch on up to 2 hours before the set temperature and raise the temperature by 4°C (with an assumed warm up rate of 2°C per hour).

19

18

17

21

20

16

15

2

1.5

1 0.5

Hours before next temperature setting of 20 °C

0

The 2 hour optimisation period and the 2°C per hour assumed temperature rise are non adjustable.

The optimisation process will be cancelled if any overrides are used during the 2 hour period of operation.

Benefits

For units without an optimum start or delayed start feature, normal practice is to set the heating to come on approximately 1 hour before it is expected to be up to the set room temperature.

For example, if a householder gets up at 6.30am, the heating will typically be set to come on at 5.30am to allow the house to be warm by

6.30am.

The benefit of the optimum start feature is that the heating switch on time is calculated based on the temperature sensed 2 hours before the set time.

The actual switch on time is then delayed as long as possible whilst still achieving the correct required temperature at the set time.

In mild weather conditions, the start time will be delayed until the last possible moment achieving considerable (energy) savings over a fixed 1 hour warm up time.

By contrast, in exceptionally cold weather conditions, the heating may be brought on up to 2 hours before the time required but this will not be normal (in the UK) and savings should outweigh the extra heating needed in exceptionally cold conditions.

The added benefit of optimum start is that comfort conditions will be improved as the heating will be better controlled and less likely to overheat the house on mild mornings.

48

Heating Programmer Replacement and Wiring Guide

24 hour

CentaurPlus C11

7 Day

CentaurPlus C17

ChannelPlus H11XL ChannelPlus H17XL

CentaurPlus C21 CentaurPlus C27

ChannelPlus H21XL ChannelPlus H27XL

Download our wiring guide here

Apple QR code

Android QR code

If you’re replacing a central heating programmer you could just fit what was there before, or go one better and fit Horstmann.

This handy guide shows you which of our programmers, from a straightforward electro mechanical unit to a 2 channel 7 day electronic programmer, is the perfect match. Often you can simply plug in without even having to rewire. Whichever one you select, you can be sure that it’s well designed, beautifully engineered and bang up to date with the latest spec. You won’t be replacing it in a hurry.

Using the Guide

First locate the existing programmer or timeswitch in the left hand column of the Programmer Compatibility Guide. Then simply follow the colour coded line over to the far right to find the recommended Horstmann replacement. The colour of the line indicates if it is a direct plug-in replacement or not. Where a 24 hour programmer or timeswitch is recommended, its 7 day equivalent can be used and fitted in the same way.

Wiring Comparison Table

Before removing any existing programmer it is essential to make a note of wire colours, terminal positions and numbers in relation to the existing backplate. The charts only include programmers or timeswitches where wiring changes are necessary when fitting our recommended replacement. Where a direct plug-in replacement is available or where terminal connections do not change, the appropriate replacement is shown on the Programmer Compatibility Guide.

For clarity the Compatibility Guide recommends replacements which are 24 hour programmers/timeswitches. All cases where a 24 hour programmer is stated as the recommended replacement, it’s 7 day equivalent can be used and fitted in the same way.

Installation and connection should only be carried out by a suitably qualified person and in accordance with the current edition of the IET wiring regulations. The information contained in this manual is intended for guidance only and is believed to be correct. Secure Controls (UK) Limited can accept no liability for any errors or omissions and reserve the right to make changes at any time without notice.

49

Manufacturer Model

DANFOSS

RANDALL

DRAYTON/

LP 111

ACL/INVENSYS LP 112

LP 241

LP 522

LP 711

LP722

LS 111

LS 112

LS 241

LS 522

LS 711

LS 722

FP

MP

TC

Switchmaster 300

Switchmaster 320/350

Switchmaster 400

Switchmaster 600

Switchmaster 805

Switchmaster 900

Switchmaster 905

Switchmaster 9000/9001

Switchmaster 980

Switchmaster Sonata

SM1

SM2

Tempus 1

Tempus 2

971

972

CP15

CP75

CP715

FP15

FP75

FP715

FP975

MP15

MP75

SET1/SET1E

SET2/SET2E

SET3E

SET3M

SET4

SET5

TS15

TS75

TS715

TS975

3001

3002

3060

4033

3020P

911

917

922

102

102E

102E5

102E7

103

103E

103E5

103E7

Programmer Compatibility Guide

Direct plug in replacement

Direct plug in replacement with simple wiring changes*

Replacement and re-wiring of backplate required*

Replace backplate but terminal connections remain the same

*Please see wiring comparison tables located in this guide

Recommended Replacement

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C27 or ChannelPlus H27XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C17 or ChannelPlus H17XL

425 Coronet or ChannelPlus H11XL

425 Diadem/Tiara or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C21

CentaurPlus C27

CentaurPlus C27

CentaurPlus C21

CentaurPlus C27

CentaurPlus C27

ChannelPlus H27XL

CentaurPlus C21

CentaurPlus C27

ChannelPlus H11XL

ChannelPlus H21XL

ChannelPlus H21XL

425 Diadem/Tiara or ChannelPlus H21XL

ChannelPlus H17XL

ChannelPlus H27XL

CentaurPlus C11

CentaurPlus C17

CentaurPlus C17

ChannelPlus H17XL

CentaurPlus C11

CentaurPlus C21

CentaurPlus C21

CentaurPlus C27

CentaurPlus C17

CentaurPlus C27

CentaurPlus C11

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21

CentaurPlus C27

CentaurPlus C17

CentaurPlus C27

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C27 or ChannelPlus H27XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

50

Manufacturer

GLOWORM

HONEYWELL

HORSTMANN

MYSON

POTTERTON

SALUS

CONTROLS

Model

Tempus 3

Tempus 4

Tempus 6

Tempus 7

Tempus 6-2

Tempus 7-2

424 Coral

424 Diamond

424 Emerald

424 Gem

424 Pearl Auto

425 Coronet

425 Diadem

425 Tiara

517

525

527

Centaur SC1

Centaur SC7

Centaur TC1

Centaur TC7

Microtimer One

Microtimer Seven

MEP1C

MEP2C

EP 2000

EP2001/EP2002

EP3000

EP3001/EP3002

EP4000

EP4001/EP4002

EP5001/EP5002

EP6000/EP6002

Mini Minder

Mini Minder E

Mini Minder ES

EP100

EP101

EP200

Tempus 1-Mk2

Tempus 2-Mk2

Masterminder

ST1000

ST1501

ST1507

ST6100A

ST6100C

ST6200A

ST6300A

ST6400C

ST6450B

ST699B Fully Pumped

ST699B Gravity

ST7000A

ST7000B

ST7100

ST799A

ST9100A

ST9100C

ST9400A

ST9400C

ST9500C

423 Amethyst 10

423 Amethyst 7

423 Diamond

423 Emerald

423 Pearl Auto

51

Direct plug in replacement

Direct plug in replacement with simple wiring changes*

Replacement and re-wiring of backplate required*

Replace backplate but terminal connections remain the same

*Please see wiring comparison tables located in this guide

Recommended Replacement

CentaurPlus C21

CentaurPlus C27

CentaurPlus C21

CentaurPlus C27

CentaurPlus C27

CentaurPlus C27

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C21

425 Diadem/Tiara or ChannelPlus H21XL

ChannelPlus H21XL

ChannelPlus H27XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C21

CentaurPlus C21

CentaurPlus C27

CentaurPlus C27

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C27 or ChannelPlus H27XL

ChannelPlus H27XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Coronet or ChannelPlus H11XL

425 Diadem or ChannelPlus H21XL

425 Tiara or ChannelPlus H21XL

ChannelPlus H17XL (75mm clearance required to left of existing programmer)

ChannelPlus H21XL (75mm clearance required to left of existing programmer)

ChannelPlus H27XL (75mm clearance required to left of existing programmer)

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C21

CentaurPlus C27

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C21

CentaurPlus C21

CentaurPlus C11

CentaurPlus C17

CentaurPlus C17

CentaurPlus C27

Manufacturer Model

SANGAMO

‘SIEMENS/

LANDIS &

M5

M6

RWB100

RWB102

STAEFA and

RWB152

LANDIS & GYR RWB170

RWB2/RWB2E

RWB200

RWB252

RWB270

RWB30/RWB30E

RWB40

RWB50

RWB7

RWB9

RWB27

RWB29

RWB1001

SUNVIC

RWB1007

RWB2001

RWB2007

MP2

Select 107/107 XLS

Select 207/207 XLS

SP100

SP20

SP35

SP25/SP30

SP50

TIMEGUARD/ Centroller 100

SMITHS

Centroller 1000

Centroller 30/50

Centroller 60/90

Centroller 70

TRT034

TRT036

TOWERCHRON/

DP72

GRASSLIN

DT71

QE1

QE2

QM1

VENNER

QM2

T2001/T2001Q

T2002/T2002Q

T2003/T2003Q

T10

T20/T30

Venotime

Venetrol 80/80M/80P

Direct plug in replacement

Direct plug in replacement with simple wiring changes*

Replacement and re-wiring of backplate required*

Replace backplate but terminal connections remain the same

*Please see wiring comparison tables located in this guide

Recommended Replacement

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C11

CentaurPlus C21 (Mid Position System - Use Gravity Mode)

CentaurPlus C17

CentaurPlus C17

CentaurPlus C21

CentaurPlus C21

CentaurPlus C27

CentaurPlus C27

CentaurPlus C11

CentaurPlus C21

CentaurPlus C11

CentaurPlus C17

CentaurPlus C27

CentaurPlus C17

CentaurPlus C27

CentaurPlus C11

CentaurPlus C17

CentaurPlus C21

CentaurPlus C27

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C17

CentaurPlus C27

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C11 or ChannelPlus H11XL

CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C21

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C27 or ChannelPlus H27XL

CentaurPlus C27

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C17 or ChannelPlus H17XL

CentaurPlus C27

425 Coronet

425 Tiara

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

425 Coronet or CentaurPlus C11 or ChannelPlus H11XL

425 Diadem/Tiara or CentaurPlus C21 or ChannelPlus H21XL

52

Wiring comparison table - Timeswitches

Manufacturer Model

DANFOSS

RANDALL

103

103E

103E5

103E7

911

917

971

TS15

TS75

TS715

DRAYTON/

LP111

ACL/INVENSYS LP711

LS111

LS711

Switchmaster 300

Switchmaster 980

HONEYWELL

SM1

TC

Tempus 1

Tempus 2

Tempus 1-Mk2

Tempus 2-Mk2

ST6100A

ST6100C

ST7000B

ST9100A

ST9100C

HORSTMANN

423 Emerald

423 Pearl Auto

424 Emerald

424 Pearl Auto

Centaur SC1

MYSON

POTTERTON

SALUS

Centaur SC7

MEP1C

EP4000

EP4001

EP4002

EP5000

EP5002

EP100

CONTROLS

SANGAMO

SUNVIC

TIMEGUARD/

SMITHS

EP101

M6

Sunvic SP20

SP35

Select 107/107XLS

Centroller 30

Centroller 50

TRT034

TOWERCHRON/ DT71

GRASSLIN

QE1

QM1

VENNER

T2001

T2001Q

T10

Venotime

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

MAINS

N

E

L

SPARE COM OFF ON

N

Centaurplus C11 or C17

L 1 2 3 4

E

E

E

4

4

4

4

E

E

N

N

N

N

N

N

N

N

N

N

N

N

N

2

N

N

N

N

N,2

N

N

N

N

N

N

N

N

N

5

5

5

5

N

1

2

N

N

N

N

N

4

N

N

N

N

N

N

N

N

N

N

N

N

N

N

L

L,1

L,1

L

L

L

L

L

L

L

L

L

L

L

L

1

L

L

L

L

L

L

L

L

L

L

L

L

6

6

6

6

L

2

1,5

L

L

L

L

L

6

L

L

L

L

L

L

L

L

4

1

L A,B,C,D

L A,B,C,D

L A,B,C,D

L A,B,C,D

L A,B,C,D

L

2

1

1

2

S

S

5,6

5

5

4

3

3

5,6

4

4

3

3

4

4

4

4

4

3

3

4

4

2

2

2

3

2

2

2

2

1

1

4

4

1

1

1

1

1

5

5

5

1

3

3

3

3

3

3

3

1

3

3

2

5

4

3

5

5

5

5

3

1

1

3

1

3

3

3

1

1

1

1

1

1

1

1

1

2

2

2

2

4

4

4

2

2

2

2

2

2

2

2

2

3

3

2

2

2

2

2

2

2

1

2

4

4

2

2

2

1

2 3

3,6 4,5

4

NC1 NO1

2

2

2

4

4

4

5

5

3

1

4

3

4

4

4

4

3

4

4

3

4

4

4

4

3

4

4

4

3

3

2

2

3

7

1

1

3

3

3

3

4

4

6

4

6

6

1

1

1

1

3

3

7

7

E

E

E

E

E

E

E

E

E

E

E

E

E

E

MAINS

N

E

L

SPARE ON COM OFF

425 Coronet or ChannelPlus H11/H17

N L

1,2,3 4

5

6

E

E

E

4

4

4

4

E

E

E

E

E

3

3

3

1

1

3

1

1

1

1

1

1

1

1

4

4

1

1

1

1

1

1

5

5

5

1

3

3

3

3

5

5

5

1

3

5

5

4

3

3

3

1

2

E

E

L

L/1

L/1

L

L

L

L

L

L

L

L

L

L

L

L

1

L

L

L

L

L

L

L

L

L

L

L

L

6

6

6

6

L

L

L

L

L

L

L

L

2

1,5

L

L

L

L

6

L

L

4

1

3

4

L A,B,C,D 4

L A,B,C,D 4

L A,B,C,D 4

L A,B,C,D 4

L A,B,C,D 4

L 3

2

S

S

1

2

3

3

7

7

4

4

4

3

4,5

4

NO1

3

1

5

5

5,6

5

5

4

3

3

5,6

4

4

3

3

4

4

4

4

4

3

3

4

4

2

2

2

3

2

2

2

2

4

4

4

3

3

4

4

4

3

3

4

4

3

7

2

2

1

1

3

3

4

4

3

3

6

6

6

4

1

1

1

1

N

N

N

N

N

N

N

N

N

N

N

N

N

2

N

N

N

N

N,2

N

N

N

N

N

N

N

N

N

5

5

5

5

2

N

N

1

N

N

N

N

4

N

N

N

N

N

N

N

N

N

N

N

N

N

N

3

3

3

2

2

2

2

2

2

2

4

2

4

4

2

2

2

2

2

2

2

3

3

4

4

2

3,6

1

2

2

1

2

2

2

2

2

2

2

NC1

2

2

2

1

1

Timeswitches: Terminal 1 on the CentaurPlus and the Terminals 1, 2 & 3 on the ChannelPlus and 425 Coronet models detailed within the Timeswitch table are

SPARE or Linking terminals. In the event that the number of spare terminals used on the timeswitch being replaced exceeds those detailed above then any connected wires should be removed and re-connected into a separate piece of terminal block. Wires from different spare terminals should not be joined together.

53

Wiring comparison table - Programmers

Manufacturer Model

DANFOSS

RANDALL

102

102E

102E5/102E7

3020P/3060

4033

922

DRAYTON/

972

LS112

ACL/INVENSYS FP

MP

Switchmaster 320

Switchmaster 350

Switchmaster 400

Switchmaster 600

Switchmaster 805

Switchmaster 900

Switchmaster 9000

Switchmaster 9001

Switchmaster 905

Switchmaster Sonata

SM2

HONEYWELL

ST699B - Fully Pumped

ST699B - Gravity

ST7000A

ST7100

ST799A

ST9400A

ST9400C

ST9500C

HORSTMANN

423 Amethyst 10

MYSON

POTTERTON

SANGAMO

SUNVIC

M5

MP2

SP100

SP25

SP30

SP50

TIMEGUARD/

Centroller 100

SMITHS

Centroller 60

TRT036

TOWERCHRON/

QM2

GRASSLIN

Centroller 70

Centroller 90

T2002

T2002Q

T2003

T2003Q

VENNER

Venetrol 80

Venetrol 80M

Venetrol 80P

Venner T20

Venner T30

EP2000

EP2001

EP2002

EP3000

EP3001

EP3002

EP6000

EP6002

423 Amethyst 7

423 Diamond

424 Coral

424 Diamond

424 Gem

Microtimer One

Microtimer Seven

MEP2C

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

8

8

E

E

E

E

E

MAINS

N

HW CH

OFF OFF

HW CH

ON ON

L

L

Centaurplus C21 or C27

1 2

3 4

SPARE

N NONE

1

1

1

2

2

2

3

4

4

11

4

2

2

2

2

2

6

2

4

4

4

2

2

2

6

6

9

4

4

2

2

2

2

2

2

2

2

2

4

4

3

3

3

6

6

3

3

3

3

3

3

3

3

3

1

3

6

8

3

8

6

3

3

3

5

5

2

8

2

4

6

6

3

3

3

3

3

3

3

3

3

2

2

6

6

4

10

10

1

1

1

1

1

1

1

1

1

4

4

3

3

4

5

3

4

4

4

7

7

4

4

4

7

3

3

4

4

4

4

4

4

4

4

4

1 6

HW ON CH ON

4 2

2

5

5

4

2

2

3

5

5

5

4

4

NC1 NO2 NO1

2

3 4

5

5

2

4

3,5

3

3,7,8

2

2,4

A,B,C

A,B,C

A,B,C

5,6

5,6

5

HW ON

HW ON

CH ON

CH ON

HW OFF CH OFF HW ON CH ON

HW OFF CH OFF HW ON CH ON

1

1

4

3

2

2

2

1

2

5

5

A/S A/S,4,5

4

4

1

1

1

1

HW OFF

1

1

1

1

1

1

6

7

7

1

NC2

1

1

1

4

1

4

1

1

2

7

7

4

3

1

7

4

4

4

4

8

1

2

5

1

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

S,S

S,S,4

S,S,4

S,S

1,4

3,6

3,6

3,6

N

N

N

1

4,5

N

N

N

1

1

N

N

N

N

N

N

N

N

N

N

2,3

N

N

N

2,3

N

2,3

N

N

N

N

N

N,1,3,4 L

N,3 L

N,1,3

N

N L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

1

L

1

L

1

L/1

L

L

L

2

L

L

3

L

L

L

2

2

N

N

N

2,3

N

N

N

N

N

N

N

N

N

N

N

N

N,2

N,2

N

N

N

N

2

2

1,7

7

N

5

5

5

L

1

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

1

1

L

L

6

6

L

6

6

6

E

MAINS

N

E N

HW

ON

COM

HW CH

OFF ON

COM

CH

OFF

L

425 Diadem/Tiara or ChannelPlus H21/H27

L

1 2 3 4 5

6

SPARE

NONE

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

8

8

E

E

E

E

6

CH ON

5

5

2

4

5

5

4

4

NO1

3

CH ON

CH ON

CH ON

CH ON

A/S

A,S

A/S

4

4

4

4

4

4

4

4

4

4

7

3

3

4

7

4

4

4

4

4

4

7

3

4

5

3

1

4

4

3

1

1

1

1

1

1

1

1

6

4

10

10

2

2

6

2

2

2

1,7

7

N

5

5

5

N,2

N,2

N

N

N

N

2

2

N

N

N

N

N

N

N

N

N

N

N

2,3

N

N

N

N

2,3

N

N

N

2,3

N

2,3

N

N

N

N

N

N

N

N

N

6

6

6

6

6

L

1

1

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

L

1

1

L

1

L/1

1

L

L

L

1

1

1

4

4

3

3

3

6

6

3

3

3

3

3

3

3

3

3

1

3

6

8

3

8

6

3

3

3

5

5

2

8

2

4

6

6

3

3

3

3

2

2

4

4

1

5

8

8

8

6

6

8

N

N

N

1

4,5

N

N

N

L

L

L

L

L

L

L

L

3

3

3

3

L

L

L

L

3

3

3

3

3 1

L HW ON

2

2

2

2

1

1

N

N

N

N

N

N

N,1,3,4 L

N,3 L

N,1,3

N

N L

L

L

L

2

2

2

3

5

5

5

L

L

NO2

3

NC2

1

L HW ON

L HW ON

L HW ON COM HW OFF

L HW ON COM HW OFF

2

2

2

1

2

1

1

HW OFF

1

1

1

1

1

1

1

1

1

2

8

5

1

4

4

4

4

7

7

2

1

7

4

3

4

1

1

1

4

1

1

1

1

7

1

6

7

1

5

5

5

5

3

5

3

7

3

8

5

5

5

5

5

5

5

5

5

5

3

3

3

3

NC1

2

COM CH OFF

COM CH OFF

4

3

2

2

2

2

2

2

2

2

9

4

4

2

6

4

4

2

2

2

6

4

4

2

6

2

4

2

2

2

2

4

4

11

3

4

3,5

3

3,7,8

2

2,4

A,B,C

A,B,C

A,B,C

5,6

5,6

5

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,B,C,D

A,S,5

A/S,4,5

A/S,4,5

S,S

S,S,4

S,S,4

S,S

1,4

3,6

3,6

3,6

Programmers: The CentaurPlus and 425 Series models detailed within this programmer table do not have any SPARE or LINKING terminals.

If spare terminals have been used on the programmer being replaced then any connected wires should be removed and re-connected into a separate piece of terminal block.

54

Thermostat Compatibility Guide

Manufacturer Model

DANFOSS

RANDALL

DRAYTON/

ACL/INVENSYS

HONEYWELL

MYSON

SALUS

CONTROLS

SIEMENS/

LANDIS &

STAEFA and

LANDIS & GYR

SUNVIC

RET 230

RET 230 F

RET 230 P

RET B

RET B-RF

RET 24

RET 24 VF

RMT 230

RMT 230 VF

RMT 24

ATC

DIGISTAT+

DIGISTAT+ RF

RTS1

RTS2

T4360A

T4360B

T6360B

Y6630D

L641A

MRT E

MRT 1

MCT 1

RTS3

RTS4

RTS5

RTS8 (Combi Stat)

HTS3

DT90E

DT92E

DT200

FT 100

RT 100

RT 200

RT 300

ST 320

CT 100

RAA 10

RAA 20

RAA 20-GB

RAA 20 LD-GB

RAD1-F

RDD10

RDD10.1

RDH10-GB

RDH10-RF

RAM1

TLX 2251

TLX 2259

TLX 2356

TLX 2358

TLX 2360

TLX 5101

TLX 7501

TLX 9201

TLX RFD

SA 2452

8

3

3

3

10

8

15

15

6

6

10

5

5

5

16

6

10

8

15

1

6

6

6

6

10

2

10

6

5

2

2

6

2

3

3

2

2

2

2

3

3

3

3

10

3

3

3

10

10

8

5

8

10

16

10

10

4

Please Note: All Horstmann Thermostats listed as the Recommended Replacement are only rated at 3 Amps. In the event that the installation requires a greater switch rating then they cannot be offered as a replacement.

Recommended Replacement

HRT4-B

HFT4

HRT4-B

HRT4-B

HRT4-ZW

HRT4-B

HRT4-B

HRT4-B (or HRT4-A without changeover switch)

HRT4-B

HRT4-B

HCT2

HRT4-B

HRT4-ZW

HRT4-A

HRT4-A

HFT4

HRT4-B

HRT4-B

HRT4-A

HCT2

HRT4-B

HRT4-ZW

HRT4-B

HFT4

HRT4-A

HRT4-B (or HRT4-A without changeover switch)

HRT4-B

HCT2

HRT4-B

HRT4-A

HCT2

HFT4

HRT4-B

HRT4-A

HRT4-B

HRT4-B

HCT2

HRT4-B (without Tamperproof cover)

HRT4-B

HRT4-B

HRT4-B

HFT4 (no changeover switch)

HRT4-B

HRT4-B

HRT4-B

HRT4-ZW

HCT2

HRT4-B

HRT4-A

HRT4-B (or HRT4-A without changeover switch)

HTT4 (no changeover switch)

HFT4

HRT4-A

HRT4-B

HRT4-B

HRT4-ZW

HCT2

55

Programmable Thermostat Compatibility Guide

Manufacturer

DANFOSS RANDALL

HONEYWELL

DRAYTON / ACL / INVENSYS

SIEMENS

MYSON

SUNVIC

SALUS

Model

TP4000

TP4000 RF

TP5000 RF

REV 11

REV 10

REV 100

REV 17

REV 21

REV 22

REV 23

REV 23 RF

REV 200

REV 24

MPRT

MPRTRF

TLX 6501

TLX RFPv

RT500

RT 500 RF

TP7000

TP7000 M

TP7000 RF

CM701

CM707

CM901

CM907

CM921 +Receiver

CM927 +Receiver

CM 721+ Receiver

CM 727 +Receiver

Digistat +2

Digistat +3

Digistat +2 Mains

Digistat +3 Mains

Digistat +2 RF

Digistat +3 RF

REV 13

REV 12

Recommended Replacement

C-Stat 11-B

C-Stat 11-ZW

C-Stat 17-ZW

C-Stat 17-B

C-Stat 17-M

C-Stat 17-ZW

C-Stat 11-B

C-Stat 17-B

C-Stat 11-B

C-Stat 17-B

C-Stat 11-ZW

C-Stat 17-ZW

C-Stat 11-ZW

C-Stat 17-ZW

C-Stat 11-B

C-Stat 17-B

C-Stat 11-M

C-Stat 17-M

C-Stat 11-ZW

C-Stat 17-ZW

C-Stat 11-B

C-Stat 11-B

C-Stat 11-B

C-Stat 11-B

C-Stat 11-B

C-Stat 17-B

C-Stat 17-B

C-Stat 17-B

C-Stat 17-B

C-Stat 17-ZW

C-Stat 17-B

C-Stat 17-B

C-Stat 11-B / C-Stat 17-B

C-Stat 11-ZW / C-Stat 17-ZW

C-Stat 11-B

C-Stat 11-ZW / C-Stat 17-ZW

C-Stat 17-B

C-Stat 17-ZW

56

Notes

57

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