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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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
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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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