Three Channel Smart Thermostat for Two-Zone Conventional Boiler Systems with Heating & Hot Water Control
Three Channel Smart Thermostat for Two-Zone Conventional Boiler Systems with Heating & Hot Water Control
Drayton Wiser | MPN: WT734R9K0902 | EAN: 5016254201693
The Drayton Wiser Thermostat Kit 3 (WT734R9K0902) is a three-channel smart thermostat heating system designed for properties with two independent heating zones and a separate hot water cylinder — the most common configuration in larger conventional boiler installations. It includes a three-channel Wiser HeatHubR and two wireless Wiser Room Thermostats, providing separate smart scheduling and control for all three circuits: Zone 1 heating, Zone 2 heating and hot water. All three channels are managed independently through the free Wiser Home app.
Kit 3 sits at the top of the Wiser Thermostat Kit range and is ideal for larger homes or any property where heating has historically been split across two zones — for example, upstairs and downstairs circuits, or a boiler serving both a main residence and an extension. Like all Wiser kits, the system is expandable: Wiser Smart Radiator Thermostats can be added to any radiator to create additional independent sub-zones, supporting up to 16 rooms and 63 devices per HubR.
What's in the Box
- 2 x Wiser Room Thermostats (white)
- 2 x Thermostat wall brackets
- 2 x Thermostat table stands
- 4 x AA batteries
- 1 x Three-channel Wiser HeatHubR
- 1 x OpenTherm module
- 1 x Wallplate
Key Features
Three-Channel Control – Two Heating Zones & Hot Water
The three-channel HeatHubR provides three independent relay outputs, one for each circuit. Channel 1 and Channel 2 control two separate heating zones; Channel 3 controls hot water. Each channel has its own independent 7-day schedule, giving complete and separate control over when each circuit operates. The existing cylinder thermostat is retained and wired in series with the hot water channel for temperature safety.
Two Room Thermostats Included
Kit 3 ships with two Wiser Room Thermostats — one for each heating zone. Each thermostat acts as the temperature sensor and manual control point for its assigned zone, and both are wireless, battery-operated and can be wall-mounted or placed freestanding on their table stands. This means no additional thermostat purchase is needed to get both heating zones up and running immediately.
Designed for Two-Zone Conventional Boiler Systems
Kit 3 is the correct choice where an existing heating system already splits central heating into two independently controlled circuits — a typical arrangement in larger properties, converted properties, or any installation where separate upstairs and downstairs control has been fitted. It is not suitable for single-zone systems or combination boilers; Kit 1 covers combi boilers and Kit 2 covers single-zone conventional systems.
Industry-Standard Wallplate Installation
The HeatHubR fits the standard UK wallplate used in most conventional heating system installations, replacing an existing programmer without additional surface work in the majority of cases. Installation takes around 20 minutes. Both room thermostats are wireless and require no wiring.
OpenTherm Compatible
The included OpenTherm module allows the HubR to communicate digitally with compatible boilers for modulating control, allowing the boiler to vary its output to match demand rather than simply switching on and off. This reduces short-cycling, improves efficiency and extends boiler life.
Wiser Home App – Full Remote Control & Scheduling
All three channels are configured and managed from the free Wiser Home app for iOS and Android. Each circuit has its own independent 7-day schedule, and the entire system can be monitored and adjusted remotely from anywhere with an internet connection. Local app access over Wi-Fi also functions without internet. The app provides access to the Heat Report, energy Insights, and per-room monitoring across all active zones.
Smart Modes for Efficiency & Comfort
Eco Mode learns the thermal properties of the building and uses weather compensation combined with optimum-stop logic to maximise boiler efficiency — turning the heating off earlier when the home retains heat well.
Comfort Mode pre-heats each zone so that it reaches the target temperature at the scheduled time, rather than beginning to heat at it.
Away Mode reduces set-points across all zones when the household is away, with optional automatic activation via geofencing through IFTTT.
Open Window Detection switches off heating in a zone when a sudden temperature drop consistent with an open window is detected, preventing energy waste.
Voice Control & Smart Home Integration
Compatible with Amazon Alexa and Google Assistant for hands-free adjustment of any zone. IFTTT integration supports geofencing and connections with third-party smart home devices and automation services.
Expandable with Wiser Radiator Thermostats
Add Wiser Smart Radiator Thermostats to individual radiators at any time to create additional independent heating sub-zones within each main circuit. The system supports up to 16 rooms with up to 5 devices per zone, and up to 63 Wiser devices total per HubR. Additional Wiser Room Thermostats, Underfloor Heating Controllers and Electrical Heat Switches can also be added.
No Monthly Subscription
All features — including remote app control, smart modes, voice integration and the Heat Report — are included with no ongoing subscription charges.
Technical Specifications
| MPN | WT734R9K0902 |
| EAN | 5016254201693 |
| Channels | 3 (Zone 1 heating + Zone 2 heating + hot water) |
| Room Thermostats Included | 2 |
| Suitable System Types | Conventional boiler with two heating zones and separate hot water cylinder |
| Hot Water Control | Yes (via Channel 3; existing cylinder thermostat wired in series) |
| HubR Power Supply | 230V a.c. ±10% 50Hz (fixed wiring) |
| Room Thermostat Power | 2 × AA alkaline batteries per thermostat (4 batteries included) |
| HubR Dimensions | 148mm (W) × 93mm (H) × 31mm (D) |
| Thermostat Dimensions | 76mm (W) × 76mm (H) × 25mm (D) |
| Display | 2.4-inch full-colour TFT with touch buttons (per thermostat) |
| Wireless Protocol | Zigbee (via HeatHubR) |
| Switch Rating | 2(1)A 230V a.c. per switch |
| Timer Programme | 7-day per channel (via Wiser Home app) |
| Max Zones / Devices | Up to 16 rooms / 63 devices per HubR |
| ErP Class (On/Off boiler) | Class VII |
| App Compatibility | Wiser Home App – iOS & Android |
| Voice Control | Amazon Alexa, Google Assistant |
| Third-Party Integration | IFTTT (geofencing & automation) |
| Colour | White |
| Warranty | 1.5 years |
| Brand | Drayton (Schneider Electric) |
Frequently Asked Questions
How do I know if I need Kit 3 rather than Kit 2?
Kit 3 is needed when the heating system has two independently controlled heating circuits — for example, upstairs and downstairs zones each with their own motorised valve and zone valve wiring — plus a separate hot water cylinder. If you only have one heating zone and a hot water cylinder, Kit 2 is sufficient. If you have a combination boiler with no cylinder, Kit 1 is the right choice.
Do both room thermostats need to be assigned to heating zones, or can one be used for underfloor heating?
Both room thermostats can be assigned to any Wiser zone, including zones controlled by a Wiser Underfloor Heating Controller or Wiser Electrical Heat Switch. The thermostats are not limited to radiator circuits — they act as room sensors and zone masters for whatever heating device is assigned to that zone.
Can I add more room thermostats beyond the two included?
Yes. Additional Wiser Room Thermostats (WN704R0S0902) can be purchased separately and paired to the same HubR to add further zones or to provide local control points in additional rooms. The system supports up to 16 rooms per HubR.
Does the existing cylinder thermostat need to be replaced?
No. The existing cylinder thermostat is retained and wired in series with the HubR's hot water channel. It continues to provide temperature limit protection for the cylinder, while the Wiser system handles time scheduling for the hot water circuit.
Is professional installation required?
Yes. The HubR requires fixed mains wiring in compliance with BS7671 (IET wiring regulations) and must be installed by a qualified electrician or heating engineer. The room thermostats are wireless, require no wiring, and are set up by the homeowner via the Wiser Home app after the HubR has been installed.
Does Kit 3 work with gravity-fed systems?
No. The Wiser HubR is not compatible with gravity-fed (non-pumped) heating or hot water systems, or with boilers that require manufacturer-specific proprietary controls to operate. Check system compatibility before specifying.
Original: $323.92
-65%$323.92
$113.37More Images
Three Channel Smart Thermostat for Two-Zone Conventional Boiler Systems with Heating & Hot Water Control
Drayton Wiser | MPN: WT734R9K0902 | EAN: 5016254201693
The Drayton Wiser Thermostat Kit 3 (WT734R9K0902) is a three-channel smart thermostat heating system designed for properties with two independent heating zones and a separate hot water cylinder — the most common configuration in larger conventional boiler installations. It includes a three-channel Wiser HeatHubR and two wireless Wiser Room Thermostats, providing separate smart scheduling and control for all three circuits: Zone 1 heating, Zone 2 heating and hot water. All three channels are managed independently through the free Wiser Home app.
Kit 3 sits at the top of the Wiser Thermostat Kit range and is ideal for larger homes or any property where heating has historically been split across two zones — for example, upstairs and downstairs circuits, or a boiler serving both a main residence and an extension. Like all Wiser kits, the system is expandable: Wiser Smart Radiator Thermostats can be added to any radiator to create additional independent sub-zones, supporting up to 16 rooms and 63 devices per HubR.
What's in the Box
- 2 x Wiser Room Thermostats (white)
- 2 x Thermostat wall brackets
- 2 x Thermostat table stands
- 4 x AA batteries
- 1 x Three-channel Wiser HeatHubR
- 1 x OpenTherm module
- 1 x Wallplate
Key Features
Three-Channel Control – Two Heating Zones & Hot Water
The three-channel HeatHubR provides three independent relay outputs, one for each circuit. Channel 1 and Channel 2 control two separate heating zones; Channel 3 controls hot water. Each channel has its own independent 7-day schedule, giving complete and separate control over when each circuit operates. The existing cylinder thermostat is retained and wired in series with the hot water channel for temperature safety.
Two Room Thermostats Included
Kit 3 ships with two Wiser Room Thermostats — one for each heating zone. Each thermostat acts as the temperature sensor and manual control point for its assigned zone, and both are wireless, battery-operated and can be wall-mounted or placed freestanding on their table stands. This means no additional thermostat purchase is needed to get both heating zones up and running immediately.
Designed for Two-Zone Conventional Boiler Systems
Kit 3 is the correct choice where an existing heating system already splits central heating into two independently controlled circuits — a typical arrangement in larger properties, converted properties, or any installation where separate upstairs and downstairs control has been fitted. It is not suitable for single-zone systems or combination boilers; Kit 1 covers combi boilers and Kit 2 covers single-zone conventional systems.
Industry-Standard Wallplate Installation
The HeatHubR fits the standard UK wallplate used in most conventional heating system installations, replacing an existing programmer without additional surface work in the majority of cases. Installation takes around 20 minutes. Both room thermostats are wireless and require no wiring.
OpenTherm Compatible
The included OpenTherm module allows the HubR to communicate digitally with compatible boilers for modulating control, allowing the boiler to vary its output to match demand rather than simply switching on and off. This reduces short-cycling, improves efficiency and extends boiler life.
Wiser Home App – Full Remote Control & Scheduling
All three channels are configured and managed from the free Wiser Home app for iOS and Android. Each circuit has its own independent 7-day schedule, and the entire system can be monitored and adjusted remotely from anywhere with an internet connection. Local app access over Wi-Fi also functions without internet. The app provides access to the Heat Report, energy Insights, and per-room monitoring across all active zones.
Smart Modes for Efficiency & Comfort
Eco Mode learns the thermal properties of the building and uses weather compensation combined with optimum-stop logic to maximise boiler efficiency — turning the heating off earlier when the home retains heat well.
Comfort Mode pre-heats each zone so that it reaches the target temperature at the scheduled time, rather than beginning to heat at it.
Away Mode reduces set-points across all zones when the household is away, with optional automatic activation via geofencing through IFTTT.
Open Window Detection switches off heating in a zone when a sudden temperature drop consistent with an open window is detected, preventing energy waste.
Voice Control & Smart Home Integration
Compatible with Amazon Alexa and Google Assistant for hands-free adjustment of any zone. IFTTT integration supports geofencing and connections with third-party smart home devices and automation services.
Expandable with Wiser Radiator Thermostats
Add Wiser Smart Radiator Thermostats to individual radiators at any time to create additional independent heating sub-zones within each main circuit. The system supports up to 16 rooms with up to 5 devices per zone, and up to 63 Wiser devices total per HubR. Additional Wiser Room Thermostats, Underfloor Heating Controllers and Electrical Heat Switches can also be added.
No Monthly Subscription
All features — including remote app control, smart modes, voice integration and the Heat Report — are included with no ongoing subscription charges.
Technical Specifications
| MPN | WT734R9K0902 |
| EAN | 5016254201693 |
| Channels | 3 (Zone 1 heating + Zone 2 heating + hot water) |
| Room Thermostats Included | 2 |
| Suitable System Types | Conventional boiler with two heating zones and separate hot water cylinder |
| Hot Water Control | Yes (via Channel 3; existing cylinder thermostat wired in series) |
| HubR Power Supply | 230V a.c. ±10% 50Hz (fixed wiring) |
| Room Thermostat Power | 2 × AA alkaline batteries per thermostat (4 batteries included) |
| HubR Dimensions | 148mm (W) × 93mm (H) × 31mm (D) |
| Thermostat Dimensions | 76mm (W) × 76mm (H) × 25mm (D) |
| Display | 2.4-inch full-colour TFT with touch buttons (per thermostat) |
| Wireless Protocol | Zigbee (via HeatHubR) |
| Switch Rating | 2(1)A 230V a.c. per switch |
| Timer Programme | 7-day per channel (via Wiser Home app) |
| Max Zones / Devices | Up to 16 rooms / 63 devices per HubR |
| ErP Class (On/Off boiler) | Class VII |
| App Compatibility | Wiser Home App – iOS & Android |
| Voice Control | Amazon Alexa, Google Assistant |
| Third-Party Integration | IFTTT (geofencing & automation) |
| Colour | White |
| Warranty | 1.5 years |
| Brand | Drayton (Schneider Electric) |
Frequently Asked Questions
How do I know if I need Kit 3 rather than Kit 2?
Kit 3 is needed when the heating system has two independently controlled heating circuits — for example, upstairs and downstairs zones each with their own motorised valve and zone valve wiring — plus a separate hot water cylinder. If you only have one heating zone and a hot water cylinder, Kit 2 is sufficient. If you have a combination boiler with no cylinder, Kit 1 is the right choice.
Do both room thermostats need to be assigned to heating zones, or can one be used for underfloor heating?
Both room thermostats can be assigned to any Wiser zone, including zones controlled by a Wiser Underfloor Heating Controller or Wiser Electrical Heat Switch. The thermostats are not limited to radiator circuits — they act as room sensors and zone masters for whatever heating device is assigned to that zone.
Can I add more room thermostats beyond the two included?
Yes. Additional Wiser Room Thermostats (WN704R0S0902) can be purchased separately and paired to the same HubR to add further zones or to provide local control points in additional rooms. The system supports up to 16 rooms per HubR.
Does the existing cylinder thermostat need to be replaced?
No. The existing cylinder thermostat is retained and wired in series with the HubR's hot water channel. It continues to provide temperature limit protection for the cylinder, while the Wiser system handles time scheduling for the hot water circuit.
Is professional installation required?
Yes. The HubR requires fixed mains wiring in compliance with BS7671 (IET wiring regulations) and must be installed by a qualified electrician or heating engineer. The room thermostats are wireless, require no wiring, and are set up by the homeowner via the Wiser Home app after the HubR has been installed.
Does Kit 3 work with gravity-fed systems?
No. The Wiser HubR is not compatible with gravity-fed (non-pumped) heating or hot water systems, or with boilers that require manufacturer-specific proprietary controls to operate. Check system compatibility before specifying.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Drayton Wiser | MPN: WT734R9K0902 | EAN: 5016254201693
The Drayton Wiser Thermostat Kit 3 (WT734R9K0902) is a three-channel smart thermostat heating system designed for properties with two independent heating zones and a separate hot water cylinder — the most common configuration in larger conventional boiler installations. It includes a three-channel Wiser HeatHubR and two wireless Wiser Room Thermostats, providing separate smart scheduling and control for all three circuits: Zone 1 heating, Zone 2 heating and hot water. All three channels are managed independently through the free Wiser Home app.
Kit 3 sits at the top of the Wiser Thermostat Kit range and is ideal for larger homes or any property where heating has historically been split across two zones — for example, upstairs and downstairs circuits, or a boiler serving both a main residence and an extension. Like all Wiser kits, the system is expandable: Wiser Smart Radiator Thermostats can be added to any radiator to create additional independent sub-zones, supporting up to 16 rooms and 63 devices per HubR.
What's in the Box
- 2 x Wiser Room Thermostats (white)
- 2 x Thermostat wall brackets
- 2 x Thermostat table stands
- 4 x AA batteries
- 1 x Three-channel Wiser HeatHubR
- 1 x OpenTherm module
- 1 x Wallplate
Key Features
Three-Channel Control – Two Heating Zones & Hot Water
The three-channel HeatHubR provides three independent relay outputs, one for each circuit. Channel 1 and Channel 2 control two separate heating zones; Channel 3 controls hot water. Each channel has its own independent 7-day schedule, giving complete and separate control over when each circuit operates. The existing cylinder thermostat is retained and wired in series with the hot water channel for temperature safety.
Two Room Thermostats Included
Kit 3 ships with two Wiser Room Thermostats — one for each heating zone. Each thermostat acts as the temperature sensor and manual control point for its assigned zone, and both are wireless, battery-operated and can be wall-mounted or placed freestanding on their table stands. This means no additional thermostat purchase is needed to get both heating zones up and running immediately.
Designed for Two-Zone Conventional Boiler Systems
Kit 3 is the correct choice where an existing heating system already splits central heating into two independently controlled circuits — a typical arrangement in larger properties, converted properties, or any installation where separate upstairs and downstairs control has been fitted. It is not suitable for single-zone systems or combination boilers; Kit 1 covers combi boilers and Kit 2 covers single-zone conventional systems.
Industry-Standard Wallplate Installation
The HeatHubR fits the standard UK wallplate used in most conventional heating system installations, replacing an existing programmer without additional surface work in the majority of cases. Installation takes around 20 minutes. Both room thermostats are wireless and require no wiring.
OpenTherm Compatible
The included OpenTherm module allows the HubR to communicate digitally with compatible boilers for modulating control, allowing the boiler to vary its output to match demand rather than simply switching on and off. This reduces short-cycling, improves efficiency and extends boiler life.
Wiser Home App – Full Remote Control & Scheduling
All three channels are configured and managed from the free Wiser Home app for iOS and Android. Each circuit has its own independent 7-day schedule, and the entire system can be monitored and adjusted remotely from anywhere with an internet connection. Local app access over Wi-Fi also functions without internet. The app provides access to the Heat Report, energy Insights, and per-room monitoring across all active zones.
Smart Modes for Efficiency & Comfort
Eco Mode learns the thermal properties of the building and uses weather compensation combined with optimum-stop logic to maximise boiler efficiency — turning the heating off earlier when the home retains heat well.
Comfort Mode pre-heats each zone so that it reaches the target temperature at the scheduled time, rather than beginning to heat at it.
Away Mode reduces set-points across all zones when the household is away, with optional automatic activation via geofencing through IFTTT.
Open Window Detection switches off heating in a zone when a sudden temperature drop consistent with an open window is detected, preventing energy waste.
Voice Control & Smart Home Integration
Compatible with Amazon Alexa and Google Assistant for hands-free adjustment of any zone. IFTTT integration supports geofencing and connections with third-party smart home devices and automation services.
Expandable with Wiser Radiator Thermostats
Add Wiser Smart Radiator Thermostats to individual radiators at any time to create additional independent heating sub-zones within each main circuit. The system supports up to 16 rooms with up to 5 devices per zone, and up to 63 Wiser devices total per HubR. Additional Wiser Room Thermostats, Underfloor Heating Controllers and Electrical Heat Switches can also be added.
No Monthly Subscription
All features — including remote app control, smart modes, voice integration and the Heat Report — are included with no ongoing subscription charges.
Technical Specifications
| MPN | WT734R9K0902 |
| EAN | 5016254201693 |
| Channels | 3 (Zone 1 heating + Zone 2 heating + hot water) |
| Room Thermostats Included | 2 |
| Suitable System Types | Conventional boiler with two heating zones and separate hot water cylinder |
| Hot Water Control | Yes (via Channel 3; existing cylinder thermostat wired in series) |
| HubR Power Supply | 230V a.c. ±10% 50Hz (fixed wiring) |
| Room Thermostat Power | 2 × AA alkaline batteries per thermostat (4 batteries included) |
| HubR Dimensions | 148mm (W) × 93mm (H) × 31mm (D) |
| Thermostat Dimensions | 76mm (W) × 76mm (H) × 25mm (D) |
| Display | 2.4-inch full-colour TFT with touch buttons (per thermostat) |
| Wireless Protocol | Zigbee (via HeatHubR) |
| Switch Rating | 2(1)A 230V a.c. per switch |
| Timer Programme | 7-day per channel (via Wiser Home app) |
| Max Zones / Devices | Up to 16 rooms / 63 devices per HubR |
| ErP Class (On/Off boiler) | Class VII |
| App Compatibility | Wiser Home App – iOS & Android |
| Voice Control | Amazon Alexa, Google Assistant |
| Third-Party Integration | IFTTT (geofencing & automation) |
| Colour | White |
| Warranty | 1.5 years |
| Brand | Drayton (Schneider Electric) |
Frequently Asked Questions
How do I know if I need Kit 3 rather than Kit 2?
Kit 3 is needed when the heating system has two independently controlled heating circuits — for example, upstairs and downstairs zones each with their own motorised valve and zone valve wiring — plus a separate hot water cylinder. If you only have one heating zone and a hot water cylinder, Kit 2 is sufficient. If you have a combination boiler with no cylinder, Kit 1 is the right choice.
Do both room thermostats need to be assigned to heating zones, or can one be used for underfloor heating?
Both room thermostats can be assigned to any Wiser zone, including zones controlled by a Wiser Underfloor Heating Controller or Wiser Electrical Heat Switch. The thermostats are not limited to radiator circuits — they act as room sensors and zone masters for whatever heating device is assigned to that zone.
Can I add more room thermostats beyond the two included?
Yes. Additional Wiser Room Thermostats (WN704R0S0902) can be purchased separately and paired to the same HubR to add further zones or to provide local control points in additional rooms. The system supports up to 16 rooms per HubR.
Does the existing cylinder thermostat need to be replaced?
No. The existing cylinder thermostat is retained and wired in series with the HubR's hot water channel. It continues to provide temperature limit protection for the cylinder, while the Wiser system handles time scheduling for the hot water circuit.
Is professional installation required?
Yes. The HubR requires fixed mains wiring in compliance with BS7671 (IET wiring regulations) and must be installed by a qualified electrician or heating engineer. The room thermostats are wireless, require no wiring, and are set up by the homeowner via the Wiser Home app after the HubR has been installed.
Does Kit 3 work with gravity-fed systems?
No. The Wiser HubR is not compatible with gravity-fed (non-pumped) heating or hot water systems, or with boilers that require manufacturer-specific proprietary controls to operate. Check system compatibility before specifying.
