Tfc Tower WFSTAT PROGRAMMABLE THERMOSTAT INSTALLATION INSTRUCTIONS

Tfc Tower WFSTAT PROGRAMMABLE THERMOSTAT

WFSTAT OPTIMUM VIBE PROGRAMMABLE THERMOSTAT

The OPTIMUM VIBE – Model OP-WFSTAT is a radio frequency programmable thermostat, with dual radio frequency / WiFi receiver. It MUST be installed by a qualified person, in accordance with best pracitse and current IEE wiring regulations. Before programming, complete all set-up instructions.

The transmiter is battery-powered (2 x AAA alkaline); the receiver is mains-powered, with volt-free switching. The control set uses the license – free 868 MHz radio frequency to communicate between transmiter and receiver, and the ISM 2.4 GHz frequency to communicate with your WiFi router, compliant with WLAN 802.11 b/g/n

Installation procedure: transmiter and receiver positoning

The receiver should normally be wall-mounted close to the boiler, and should share a mains supply from the same circuit that powers the heater / boiler. However avoid locating it directly next to the boiler’s case – see 1 below. The transmiter should be located within the property bearing in mind the following requirements:

The transmiter has an in-built temperature sensor, which it uses to detect ambient temperature, and calculates whether to send a demand or no-demand signal to the receiver. The transmiter should be located in a main living area, where it is visible, has a free air-flow and is not unduly influenced by draughts or extraneous heat sources: e.g. radiator / direct sunlight / lamp— please refer to the diagrams below:

1. The radio-frequency signal range is 20 to 30 metres in conventional brick / timber / tle structures. Note that me-tallic materials such as reinforced concrete and foil-backed plasterboard will reduce or in some cases block the ra-dio frequency signals. It is best to position both transmiter and receiver so that they are not close to large metallic objects, and bear in mind that mirrors reflect radio waves in the same way they reflect light.

Transmiter – installation

Place 2 x AAA alkaline batteries in the battery compartment at the back of the transmiter; ensure correct polarity. Set the time and day: Atfer inserting batteries, the transmitier will jump totime-settng mode, or during normal operation, touch SET for five seconds, change the minutes, touch SET, change the hours, touch SET, change the day, touch SET. Then touch the ON/OFF icon to put in run mode. Full set-up can be completed later.

The transmiter can be wall-mounted, or placed on a table-top or counter, using the back-plate or the stand includ-ed in the carton. If wall-mounting, fix the back-plate to the wall observing the UP ↑ ↑ marks, align the top two recesses on the back of the transmiter, to the top two lugs on the back-plate, then rotate downwards to ‘click’ the other two lugs in place. Reverse this procedure to remove the transmiter from the back-plate. Note that – if you hold the transmiter for longer than a few seconds, it will start to detect your body temperature, rather than the ambient room temperature, and this will affect the calculation of demand / no demand for heat. Replace the transmiter onto the back-plate or stand so that it will again start to detect the ambient room temperature.

Receiver – installation

The receiver should be wall-mounted in a clean, dry environment. It is a class II control, suitable for ambient temperature from 0 to 500C. It has 60mm wall-fixing centres which are compafble with standard back-boxes. A back-plate channel is provided if wiring has to be surface-run. The receiver requires a 230 volt live and neutral supply, and controls a volt-free changeover switch, as well as an Open Therm® polarity-free output. Separate the receiver top cover from the base by gently lever-ing the cover upwards with a flat-bladed screwdriver placed into the two slots on the underside. Fit the receiver to the wall, and connect to the terminals provided. See the wiring diagrams below:

Before connecting the receiver to the boiler, make sure that you have followed the boiler external thermostat connection instructions. A mains connection to a volt-free terminal could damage the boiler circuitry.

Wiring

Wiring for volt-free switching:

Connect 230V AC Live and Neutral to L & N Connect the volt-free boiler connec􀀂ons (SW1 / SW2) to COM & N O (common and normally

Wiring for mains switching:

Connect 230V AC Live and Neutral to L & N Fit a short link wire between L & COM Connect the (230V mains) switched live to N O

The VIBE receiver is a double-insulated Class II control without earth connection. Use a separate single screw ter-minal block if earth contnuity is required. Affer wiring clip the cover on top of the installed receiver: apply light pressure unTl the housing clicks into place.

Power-up the control set and complete the seting up procedure

Affer fiffng batteries to the transmiter; fiffng the receiver to the wall and installing wired connections appropri-ate for the heatng appliance, switch on the mains supply to the receiver. The green Power LED should be visible on the receiver. The green LED will flash 1 x per second. Now check the receiver response: keep the transmiter approximately 1 to 2 metres from the receiver, and touch the UP arrow to raise the SET temperature above the measured ROOM temperature. Within 2 or 3 seconds the demand symbol (see let) should appear in the display, and within a further ~10 seconds, the receiver Heatng on LED should illuminate. There is an audible click as the switching relay operates. The heating appliance should now be running. The receiver can also be operated man-ually by briefly pressing the centre override button. Note that if the transmiter is let in demand mode affer the receiver is manually overridden to off (and vice-versa), the transmiter will re-assert control and switch back on approximately 10 minutes later.
The transmiter and receiver control set is pre-commissioned at the factory. Refreshing of the RF link is possible (see Refresh RF Link on page 4), but this should not be necessary. The transmiter and receiver should communi-cate as soon as they are both powered-up. If there is a problem, make sure that:

• the green Power LED on the receiver is illuminated. If not, check the mains supply and ensure the receiver is on. If necessary, briefly press the receiver ON/OFF bu􀀁on.
• the demand symbol is visible in the transmiter’s LCD. If not, increase the SET temperature to at least one de-gree above the ROOM temperature. The demand symbol should be visible within three seconds.

Assuming the receiver response is O.K., proceed to the rest of the setting-up procedure.

Transter and receiver display/controls

Parameter setting — how to configure the way your Optimum Vibe thermostat works: S E T +

• To open the configuration menu, first touch the transmiter ON/OFF button to turn the display off (touch any button to ‘wake-up’ the transmiter, then touch the ON/OFF button to turn off), then touch the
• SET and UP buttons at the same time for 5 seconds:
• You can review 21 options which can be configured to adjust the operation of the OPTIMUM VIBE.
• Touch the UP or DOWN arrows to adjust the parameter, and touch SET to move sequentally through the options. Changes will be saved by pressing the ON/OFF button. If no button is touched for 10 seconds, the display will ‘time-out’, but your changes will samll be saved.

Option	Description	Range	Default value
01	Temperature calibration	-80C  ~ +80C	00C
02	Maximum temperature setting	50C  ~ 350C	350C
03	Minimum temperature setting	50C  ~ 350C	50C
> 05	Frost-protection temperature	OFF (- – in config. Screen), or 50C ~ 150C	50C
09	Hysteresis (differential)	0.50C ~ 3.50C	0.50C
> 11	Child lock	0: Unlock      1: Lock	0
17	Reset (reset all values to default)	Change to 1; touch Power button for 5 secs	0
18	Firmware code	Non adjustable *	5091
19	Firmware code	Non adjustable *	0113
50	Backlight	0: OFF  1: AUTO	1
> 52	Temperature regulation mode	NOr: Normal (ON/OFF) OPs: Optimum Start tPi: Time Proportional / Integral	NOr
> 53	Time interval for Ops	10 min, 15 min, 20 min	20 min
> 54	Number of heating cycles/hour	Range: 2 ~ 3 ~ 6 ~ 12	6
> 55	Proportional Bandwidth	Range: 1.50C— 30C	20C

See additional notes about these configuraition options on Page 4
Firmware is pre-loaded in the factory, and visible for reference but cannot be change

59	Spare program space
60
61	Spare program space
62	Spare program space
63	Spare program space

Configuration options—additional notes

Option	Description
05	If you set a frost-protection temperature, the heating will be switched on when the measured temper- ature falls below this level, even if the transmitter has been turned off.
11	When receiver connected via ON/OFF terminals, this setting can be adjusted via the transmitter or the App.
52	Please read ‘how it works’ for a full explanation of temperature regulation modes
53	Set if you chose OPs (Optimum Start) regulation. For the best results, the time interval selected should approximate the time taken to increase the room temperature by 1 degree.
54	Set if you chose TPi regulation. Select a lower number for heating systems with a slow response, and a higher number for heating systems with a fast response.
55	Set if you chose TPi regulation. Sets the temperature below the set-point at which TPi control will begin

Initate WiFi link / Refresh RF link
Press and hold the centre override button on the receiver until the Heating on LED flashes rapidly. Release the override button—the LED must smll be flashing. For WiFi LINK—see WiFi instructions.
RF LINK: Turn off the transmitier by touching the ON/OFF icon. The display will go blank. Now touch the SET icon for 5 seconds. A unique pre-set four-character code will show in the top let of the display. Release and then briefly touch the SET icon once more. The receiver LED will stop flashing and the RF link has been refreshed. Quit back to normal running mode by touching the ON/OFF icon.
Turn on the transmiter by touching the ON/OFF icon, to bring the VIBE back into service.

Receiver ON / OFF
You can turn off the receiver. The receiver’s output will switch off, and it will stop responding to the transmiter. Transmiter ON/OFF
You can save battery power on the transmiter, by touching the ON/OFF icon. The transmiter is switched off and will stop sending control signals; the receiver will also switch OFF until you turn the transmitier back on.

Specification

868 MHz radio frequency control between transmiter and receiver, with 4 character hexadecimal coding giving 65,536 code combinations. Transmiter power 2 x AAA alkaline. Touch-screen keys. 70 x 40mm backlit LCD. Di-mensions 120 x 85 x 22.5mm. Dual RF and WiFi 2.4 GHz receiver: power 230V AC, volt-free changeover 10A (resistive) switching, ON/OFF & manual override buttons. Dimensions 85 x 85 x 25mm. Wall-fixing centres 60mm.

• Set control features: 20—30m range in buildings. ON/OFF, Optmising & TPI temperature teresis +/- 0.50C. 5 & 2 or 7 day programming. 4 time/temperature periods. Temperature range 5—35 0C.
• Boiler Plus compatible: Class IV control, 2% contribution to system efficiency Approvals: CE – Radio Equipment Directive EN 2014/53/EU – RoHS
  Do not dispose of this product with household waste – use local recycling facililies

QR058 Prepared for TFC Group by: J. Todd Issue 2: August 2020

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Tfc Tower WFSTAT PROGRAMMABLE THERMOSTAT Operating Guide

Tfc Tower WFSTAT PROGRAMMABLE THERMOSTAT INSTALLATION INSTRUCTIONS