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Summary of Contents for Secure H3747
- Page 1 Smart Programmable Thermostat H3747 Installation and commissioning guide...
- Page 2 The Secure Controls products requires electrical connections at mains voltage and should be installed by a suitably competent person, in accordance with Part P of the Building Regulations, BS 7671:2008, (e.g. an electrical contractor registered with an authorised competent person self-certification scheme).
- Page 3 In the box Pre-paired Programmable Thermostat Receiver H3747 Display PTD Optional (To be purchased separately) Extra PTD Temperature Sensor THS WiFi Extender HC2.4 (Additional PTD (Additional temperature sensor (Add-on WiFi adapter) for extra zones) for extra zones)
- Page 4 Know your products Receiver H3747 Mains-powered device, compatible with Combination, System and Regular boilers Ÿ (Heat+hotwater+zones) Communicates wirelessly with PTD, temperature sensor and mobile app Ÿ Variant with WiFi module available for remote access Ÿ Simple installation for retrofits with minimum wiring changes required Ÿ...
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Page 5: What Is Covered
What is covered? How to Install Setup system using PTD Test Receiver H3747 Establish communication Programmable Thermostat Display PTD User mobile app... - Page 6 Compatibility The H3747 Smart Programmer is compatible with most heating control systems and is ideal for compatible system boilers using spring return valves. It can also work with combination boilers as well as heat pumps requiring On/O control. Shipped with a standard 9-pin back plate, it can easily replace Centaurplus and Serviceplus time switches and programmers requiring minimum of wiring changes.
- Page 7 Prerequisites For installation For commissioning Tools / things you may need: To commission your system, you need: Secure Controls PTD Flat head Philips head Drill machine screw driver screw driver (2.5 mm drill bit) Smartphone Wire stripper Plier Hammer Version 11.0 and above Marshmallow (version 6.0)
- Page 8 Typical system deployments 2 Zone heating and hot water * All graphics are for illustration purpose only Internet WiFi Wireless connection H3747 Wired connection Pipes Zone 1 Two port zone valve Channel 3 Channel 1 Boiler Zone 2 Hot water...
- Page 9 Typical system deployments 3 Zone heating and hot water * All graphics are for illustration purpose only Internet WiFi H3747 Zone 1 Channel 1 Zone 2 Two port zone valve Channel 3 Channel 2 Boiler Zone 3 Hot water Auto by-pass...
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Page 10: Product Dimensions
Product dimensions 36 mm 164 mm Receiver H3747 100 mm 29.5 mm Programmable Thermostat Display PTD... - Page 11 Download the installer mobile app If you are replacing an existing programmer or time switch or even performing a fresh installation, we recommend that you install the Secure Installer Guide mobile app. 1. Download the Secure installer guide mobile app 2.
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Page 12: Install The Receiver
Install the receiver Fascia plate Mark out the position... - Page 13 Drill the holes and secure the mounting plate M3.5, AB type screws...
- Page 14 In case of surface wiring (Optional) Break the surface wiring knockout provided on the receiver before proceeding further. Note : Perform this step only if you have surface wiring.
- Page 15 Zone 2 On COM 3/4 Backplate Earth On 3 Zone 3 or hot water On On 4 Zone 4 On If replacing, take a picture of your old thermostat connections, label and re-wire as shown in Secure Controls installer app.
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Page 16: Make Connections
Make connections This diagram is schematic and should be used for guidance only. 4 zone heating system Receiver back plate Call Call Call Call Zone 1 Zone 2 Zone 3 Zone 4 valve valve valve valve *Note : The receiver has voltage free contacts. A Boiler link between terminal L, 2 and 4 is required for mains voltage applications. - Page 17 Make connections This diagram is schematic and should be used for guidance only. 2 zone heating and hot water system Receiver back plate Cylinder stat Call Call Call Zone 1 Zone 2 Zone 3 valve valve valve *Note : The receiver has voltage free contacts. A Boiler link between terminal L, 2 and 4 is required for mains voltage applications.
- Page 18 Make connections This diagram is schematic and should be used for guidance only. 3 zone heating and hot water system Receiver back plate Cylinder stat Call Call Call Call Zone 1 Zone 2 Zone 3 Zone 4 valve valve valve valve *Note : The receiver has voltage free contacts.
- Page 19 Plug in the WiFi extender HC2.4 (optional) Remove dummy cover Plug in the WiFi adapter Note : WiFi adapter once installed cannot be removed...
- Page 20 Fit the receiver...
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Page 21: Verify Installation
Verify installation Channel LEDs Select channel Apply Boost LED states * Note: 1. Use the top button (Select channel) to switch between di erent Default state Solid white channels. 2. Use the bottom button (Apply Blinking white During setup Boost) to confirm channel selection. (LED 1) 3. - Page 22 Install the PTD Ideal mounting location The PTD should be placed approximately 1.5 metres above floor level, in 'free space', away from draughts and sources of heat or electrical interference.
- Page 23 Mark out the mounting position Press The product is shipped in deep sleep mode to save battery. To wake up the device, you must press the button at the rear before setup. Unbox...
- Page 24 Fit the PTD M3.5, AB type screws Click...
- Page 25 PTD button functions Buttons Functions Menu/Back button Menu/Back Press 1. To enter the main menu button 2. To return to the previous menu / selection Home-Away Press 1. To navigate between modes button (Home/Away) 2. To enter a menu/screen 3. To confirm a change or setting or enter + or - button Press (+)
- Page 26 Establish communication with the receiver Long press the Menu button to establish communication between Receiver H3747 and PTD Long press Menu button Home-Away Note: The PTD has great temperature sensitivity and you may observe a sudden rise in ambient temperature during the commissioning process triggered by the touch of your...
- Page 27 Establish communication with the receiver Press + or - to select (Yes Press + or - to select fuel or No). Press Home-Away type. Press Home-Away to to confirm selection confirm selection...
- Page 28 Communication established Home-Away PTD after establishing communication with the receiver...
- Page 29 Install the user mobile app 1. Download the Secure Controls user mobile app 2. Open the app and create an account to sign in...
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Page 30: Optional Installation
Optional installation Add new PTD Add new Temperature Sensor THS Refer quick installation guide Refer quick installation guide of PTD of THS... -
Page 31: Product Technical Specifications
Product technical specifications Receiver H3747 Operating temperature 0°C to 40°C Pollution degree Ingress protection IP30 Rated input voltage 230V ± 10% AC Relay contact voltage rating, Volt free (max 230/240 V AC) Ch1 to Ch4 Relay current rating 3(1) A maximum Storage temp. - Page 32 Product technical specifications Programmable Thermostat Display PTD Operating temperature 0°C to 40°C Storage temp. range -20°C to +70°C Relative humidity 0% to 95% non condensing Pollution degree Ingress protection IP30 Non replaceable 2x A Lithium-ion, Battery specifications 3.6 V, 3600 mAh (each) Battery life ≈12 years Wireless communication...
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Page 33: Products Variants
Display PTD Mains powered 2 channel receiver C1727 Programmable Thermostat and Programmable Thermostat Display SCT200-000 C1727 (PTD) Mains powered 4 channel receiver H3747 Programmable Thermostat and Programmable Thermostat Display SCT400-000 H3747 (PTD) Battery operated heating control Temperature Sensor THS... - Page 34 Notes...
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Page 35: Learn More
Learn more Receiver H3747 The H3747 Smart programmer is designed for use with one to four zones of heating or hot water using spring return valves. Compatible with most regular heating systems including combination or system boilers as well as heat pumps requiring on – o control. The receiver is supplied with a standard 9-pin back plate for easy retrofit onto legacy Channel Plus or 425 programmers and... - Page 36 Secure Meters (UK) Ltd South Bristol Business Park, Roman Farm Road, Bristol, BS4 1UP United Kingdom Bristol Phone: +44 117 9788 700 UK Free Phone : 08081687224 UK Direct : +44 196 2826 225 support@securemeters.com Copyright © 2020, SIHPL...
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Questions and answers
replacing H527 with H3747 back plate is wire linked L,2, 5 do i leave as is
When replacing the H527 back plate with the Secure H3747 back plate, follow these steps:
1. Use the same wall plate, as the H3747 is designed to fit the Channel Plus range.
2. Check and adjust the wiring: move switch live connections to the correct terminals for each zone.
3. If using existing thermostats, ensure their switch live wires are connected to the proper terminals, then assign them to zones using the PTD or app.
4. Remove or reconfigure any existing links on the back plate, as they may not match the H3747’s terminal layout.
5. Note that the H3747 has volt-free contacts. If your system requires mains voltage switching (unlike the internally linked H37XL), you must create new links between terminals L, 2, and 4.
Always follow wiring diagrams and safety procedures during installation.
This answer is automatically generated