Baxi 720644701 Assembly Instructions

Installation & User’s Instructions

AUTO

MODE MENU

°C

Baxi Heating UK Ltd 2011

Please keep these instructions in a safe place. If you move house, please hand them over to the next occupier.

Part No. 720644701 7 day Wired Digital Programmer & Room Sensor

Part No. 720644801 7 day Wireless Digital Programmer & Room Sensor

Part No. 720644901 24hr Wireless Digital Programmer & Room Sensor

720644801 shown

1.0 Contents

1.0 Contents 2

2.0 Introduction 3

3.0 Programmer & Room Sensor Functions 4

4.0 Installation & Wiring 5

5.0 Wireless Room Unit 7

6.0 Manual Synchronization 8

of Wireless Units

7.0 Standby & Operating Mode 9

8.0 Central Heating & Domestic Hot 10

Water activation

9.0 Temperature Settings 11

10.0 Setting the Time & Day 12

11.0 Setting Central Heating & Domestic 13

Hot Water

12.0 Programmer & Room Sensor 14

Parameter Codes

13.0 Error Codes 15

Page

Baxi Heating UK Ltd 2011

Programmer & Room Sensor - 7 day Wired

Programmer & Room Sensor - 7 day Wireless

Programmer & Room Sensor - 24hr Wireless

Receiver

Batteries (AA/LR6)

Fixing Screws

Rawlplugs

Instructions

720644701

720644801

720644901

111

442

Kit contents

Table 1. Kit contents

2.1 General Introduction

2.2 Wireless versions (720644801 & 720644901)

2.0 Introduction

Fig. 2 Receiver

Fig. 1 Programmer & Room Sensor (720644801 shown)

AUTO

MODE MENU

°C

Boiler

Unit

AUTO

MODE MENU

°C

Boiler

Unit

Receiver

1. Specification of Units.

720644701 7 day Wired (for use with Neta-tec &

Duo-tec) is wired directly to your boiler unit (Fig. 3).

720644801 7 Day Wireless & 720644901 24h Wireless

(for use with Neta-tec, Duo-tec & Megaflo Compact) are

operated remotely via radio frequency wireless transmis-

sion to a Radio Frequency Receiver fitted close to the

boiler unit (Fig. 4).

2. The sensor constantly monitors the temperature of the

room in which it is installed. It can be operated in four

temperature modes, ‘Hi’ (or ‘COMFORT’), ‘Lo’ (or

‘REDUCED’), ‘Frost Protection’, or left in ‘Automatic’

(AUTO) to operate as programmed.

3. Depending on the settings, the boiler will run the ‘Hi’

COMFORT settings during a heating demand and the ‘Lo’

REDUCED setting for overnight periods or times when the

property is left unoccupied.

1. The units require 2 AA type alkaline batteries (Supplied).

Installation of the batteries is shown in Fig. 12.

2. If the battery symbol is seen flashing in the digital display

(Fig. 5) the batteries need replacing. See Fig. 12 for details.

3. The batteries have a lifespan of approximately 2 years.

Batteries should be changed within this timescale as a

precaution.

4. The Clock Function will need to be checked every time

the batteries are replaced.

Baxi Heating UK Ltd 2011

NOTE: If the batteries are left flat the unit will only retain

its settings for a maximum of one week.

NOTE: If the batteries are flat the boiler will return to a

default setting of Boiler ON.

AUTO

MODE MENU

°C

Fig. 3 Programmer & Room Sensor - Wired version

Fig. 4 Programmer & Room Sensor - Wireless version

Insulation Class II

IPX Rating IP44

Operating Temperature -5°C to 50°C

Transmission Frequency 868MHz

(Wireless only)

2.3 Technical Specifications

3.1 Description of Functions

3.0 Programmer & Room Sensor Functions

4Baxi Heating UK Ltd 2011

AUTO

MODE MENU

°C Current Time

Measured

Temperature

Battery life

(Replace if flashing)

Programme

and Time

Segments

Current Day

(1 = Monday)

(7 day version only)

Menu Button

Selector Button

Mode Button

Burner ‘ON’

Indicator

Communication

(Wireless only)

Central Heating

Domestic Hot

Water

REDUCED Mode

COMFORT Mode

Automatic Mode

Manual Mode

STANDBY

MODE

Press the

Button

Day of

the week

1= MON

(7 day only)

Day of

the week

selected

(7 day only)

Standby

selected

Central

Heating

(flashing = selected)

Signal

Strength

(flashing = no

signal)

Boiler runs

using User

defined

times

Boiler in

REDUCED

Mode

Boiler in

COMFORT

Mode

Press the

MODE

Button

Rotate the

Selector

Button

Press the

Selector

Button

Symbol Meaning Symbol MeaningSymbol Meaning

°C

AUTO

Time

(flashing = selected)

Temperature

(flashing = selected)

Domestic

Hot

Water

(flashing = selected)

Fig 5. Programmer & Room Sensor front view with functions

Table 2 Programmer & Room Sensor symbols & meanings

4.1 Installation

4.2 Connecting 720644701 7 day Wired

4.0 Installation & Wiring

720644701 7 day Wired

1. This Programmer & Room Sensor will take full control of

the boiler once fitted. All the boiler functions are

transferred to the Programmer & Room Sensor except

Chimney, Commissioning and the Combustion Adjustment

functions (Refer to the Boiler Instruction Manual).

2. The boiler must be fully commissioned before fitting this

Programmer & Room Sensor.

NOTE: Communication between the boiler and the

Programmer & Room Sensor can take up to 2 minutes to

establish. During this time, the boiler may attempt to fire

prior to communication being established.

3. If necessary, control can be transferred back to the

boiler. Either remove the unit from its cradle, or remove

the plug from the Receiver, then turn the power to the

boiler off and back on.

NOTE: The yellow link wire across terminals 1 & 2 on

the Boiler terminal block ‘M1’ must be removed when

fitting this Low Voltage control system. Fig. 6.

1. Power down the boiler.

2. Remove the backplate from the unit by pressing down

on the rear tab and easing apart. Fig. 12.

3. Identify a suitable site to locate the Programmer & Room

Sensor. See Fig. 8 for guidance on where to locate the unit.

4. Use a suitable grade of wire when connecting the

Programmer & Room Sensor to the boiler. A specification

of 2 x 0.75mm with a maximum length of 50m should be

used.

4. Pass the wires through the access slots in the backplate

and wire the terminals as shown in Fig. 6.

5. Screw the backplate to the wall using the fixings provided

and reattach the Programmer & Room Sensor.

6. Turn the power back on.

Baxi Heating UK Ltd 2011

123

Programmer & Room

Sensor Backplate

Min. 200 mm

MODE MENU

°C

MODE MENU

°C

MODE MENU

°C

MODE MENU

°C

1500mm

Fig 6. Wiring details for 7 day Wired

720644701

Fig. 7 Connector Pins

Fig. 8. Location positions

Rear Tab

Boiler Wiring

Terminal M2

Low

Voltage

Terminal

Block

Boiler

Mains

Voltage

Terminal

Block M1

IMPORTANT

When fitting Low

Voltage Controls

remove the Yellow Link Wire

from the Boiler Terminal Block M1

4.0 Installation & Wiring (cont.)

NOTE: The yellow link wire across terminals 1 & 2 on the

Boiler terminal block ‘M1’ must be removed when fitting

this Low Voltage control system. Fig. 9.

1. The Receiver should be wired to the boiler as shown in

Fig 9.

2. Turn the power to the boiler off.

3. Remove the Receiver backplate by carefully prising it

away from the body. Fig. 10.

4. Route the wires through the rear of the backplate panel.

If a surface mount is required it will be necessary to break

off the appropriate tabs to give the wire access.

5. Connect the wires to the ‘OT’ connection on the

terminal block. Fig. 9. Note this is removable for ease of

wiring.

6. Connect the other end of the wire to the terminals on

the boiler. Please refer to the boiler manual for wiring

details.

7. Fix the Receiver to the wall using the fixings provided

and refit the front cover ensuring the correct orientation.

Fig 11.

8. Fit the batteries to the Programmer & Room Sensor.

Fig 12.

6Baxi Heating UK Ltd 2011

Fig. 9. Receiver Backplate

4.3 Connecting 720644801 7 day Wireless &

720644901 24h Wireless.

Fig. 12. Accessing batteries

Fig 11. Completed Receiver

1. Press Securing Tab.

2. Ease away from Backplate.

2. Ease Backplate away.

Fig 10. Receiver & Access Tab

2 x AA/LR6 Batteries

(Supplied)

Boiler Wiring

Terminal M2

Low

Voltage

Terminal

Block

Boiler

Mains

Voltage

Terminal

Block M1

IMPORTANT

When fitting Low Voltage

Controls remove the

Yellow Link Wire from the

Boiler Terminal Block M1

5.1 Boiler & Programmer Communication

5.0 Wireless Room Unit

1. The units are pre-synced so should communicate with

each other when powered up.

NOTE: Communication between the boiler and the

Programmer & Room Sensor can take up to 2 minutes

to establish. During this time, the boiler may attempt to

fire prior to communication being established.

2. If Error codes 83 or 85 are seen during commissioning,

there is a communication problem.

3. Error 83 is due to the Receiver not communicating with

the boiler. Check the wiring between the Receiver and

boiler. Fig. 9

4. Error 85 is due to the Programmer & Room Sensor not

communicating with the Receiver. The Programmer &

Room Sensor is either out of range or has not

synchronized correctly. Check the unit’s location (Fig 13)

or proceed to the Manual Sync process in Section 6.0

AUTO

MODE MENU

°C

Fig. 14 Remote unit Error Codes

Fig. 15 Signal Strength Test

Fig. 13 Maximum permitted separation

Boiler

Unit

Receiver

Error

5. If Error 85 is seen after commissioning, check:

a) The Programmer and Room Sensor and the Receiver are

within range of each other. See Fig. 13 and Section 5.2

b) The units are synchronized correctly. Section 6.1.

c) The wiring is correct between the Receiver and boiler.

Fig. 9

6. The maximum distance between the Receiver and the

Programmer & Room Sensor will depend on the layout of

the house. For a typical house, a guideline of 3 floors or

walls can be used, as shown in Fig 13.

MODE MENU

°C

MODE MENU

°C

MODE MENU

°C

Before mounting the Programmer & Room Sensor to the

wall, perform the following test to determine the signal

strength. Fig 15.

1. Press and hold the Selector Button for approximately 6

seconds and HC 1 will be seen in the display.

2. Rotate the Selector Button until ‘tSt OFF’ is seen in the

display.

3. Press the Selector Button and OFF will flash. Rotate the

Selector Button until ON is seen.

4. Press the Selector Button to start the signal strength test.

The test may last for up to 8 minutes. During this time,

numbers ranging from 0 to 4 are displayed. ‘0’ indicates no

signal available and ‘4’ shows excellent signal strength Fig 15.

Baxi recommends locating the unit to give a signal strength

of 3 or 4. If the signal is low, move the unit to a more

suitable location and retest.

5. Press the Selector Button at any time to interrupt the

test or press MENU to escape once the test has finished.

6. If the Manual Sync. process needs to be carried out see

Section 6.0.

5.2 Test for Signal Strength

Baxi Heating UK Ltd 2011

Hold for 6 seconds

tSt

OFF

tSt

OFF

tSt

0 No Signal

1 Weak Signal

2 Poor Signal

3 Good Signal

4 Excellent Signal

Up to 8

minutes

test result

Retest

Example A:

1 floor + 2 walls.

Example B:

2 floors + 1 wall.

Example C:

3 floors + no walls.

6.1 Synchronizing 720644801 7 day Wireless

& 720644901 24h Wireless

6.0 Manual Sync. Function

The Programmer & Room Sensor and the Receiver can be

synchronized using the method shown in Fig. 18 as follows:

1. Start by setting up the Programmer & Room Sensor.

Press and hold the Selector Button (Fig. 16) for approx. 6

seconds. ‘HC 1’ will be seen on the display.

2. Rotate the Selector Button until ‘SnC OFF’ is seen in the

display.

3. Press the Selector Button and ‘OFF’ will flash. This display

will only remain on the screen for approximately 60

seconds.

4. Now set up the Receiver. LED ‘L1’ will be flashing. Fig.

18. One of the following conditions will be seen.

1 One flash every 2 secs Boiler and Controller Synchronized.

2 Two flashes every 2 secs Communication error

3 Three flashes every 2 secs No communication yet

4 Flash for 1sec NA for Sync

5 1 sec flash every 1 sec Synchronization initialisation

See Fig. 27 for detailed description

5. If one flash is seen every 2 seconds, the boiler and

Programmer & Room Sensor are already synchronized.

Return to the Programmer & Room Sensor and press

Menu twice to exit the Synchronization menu.

8Baxi Heating UK Ltd 2011

AUTO

MODE MENU

°C

Hold for 6 seconds

Fig. 16. Programmer & Room Sensor

Selector Button

Fig. 18. Manual Sync Process Diagram

Fig. 17. Receiver LED Display

& Button

L1 L2

SnC

OFF

SnC

End

Err

Rapid Flash

Press &

hold until

slow flash

Slow Flash

SnC

OFF

SnC

OFF

SnC

OFF

Return

Controller

Go to

Receiver

Unit

Reposition

Retry

6. If L1 shows 3 flashes every 2 seconds the units are not

synchronized. Press and hold the Receiver Button until

the rapid flash at L1 changes to a slow flash.

7. Return to the Programmer & Room Sensor where

‘SnC OFF’ will be flashing. Rotate the Selector Button

until ‘SnC ON’ is seen. Press the Selector Button and

the display shows 4, 3, 2, 1 counting down. When this

process is complete, the unit will display ‘End’ if

synchronization has been successful. Press the Selector

Button to return to the ‘SnC OFF’ screen then press

MENU to escape.

8. If Error 85 is still displayed, the unit hasn’t synchronized

correctly. Return to the beginning and repeat the process.

. . . 4, 3, 2, 1

7.0 Standby & Operating Mode

Baxi Heating UK Ltd 2011

7.1 Standby and Operating modes

1. The controller can be set to either Standby Mode or

Operating Mode. In Standby, both the Central Heating and

Domestic Hot Water functions are switched OFF.

2. In Standby the Boiler Frost Protection function is still

activated and will fire the boiler if the temperature in the

boiler drops below 4°C.

3. In Operating Mode, the boiler will respond to any preset

Central Heating or Domestic Hot Water demand.

4. The screen display shows the current settings. Fig 19

shows the unit in Standby Mode. Fig 20 shows Operating

Mode.

1. To change the unit’s settings, follow the flow diagram

shown in Fig 21.

2. Press the Mode button and the Standby symbol will flash

and ‘OFF’ is shown in the main display. The Central Heating

and Domestic Hot Water symbols can also be seen.

3. Press the Selector Button once and ‘OFF’ will flash. The

Central Heating and Domestic Hot Water symbols

disappear.

4. Rotate the Selector Button clockwise until ‘On’ is seen in

the display.

5. Press the Selector Button once to confirm the selection

and then ‘Menu’ to return to the main screen. If Menu isn’t

pressed the display will return to the Main screen after

approximately 2 seconds. The unit is now in ‘Operating

Mode’.

Fig 21. Standby & Operating Mode Diagram

MODE

To Escape

(or wait 2 secs)

Confirm

AUTO

MODE MENU

°C

Fig 19. Unit in Standby Mode.

AUTO

MODE MENU

°C

Fig 20. Standby turned off.

7.2 Changing Standby and Operating Mode settings

AUTO

Table 3. Display Icons

AUTO

OFF Heating or Hot Water set to OFF

COMFORT room temperature

REDUCED room temperature

Domestic Hot Water setting

Hourly Central Heating programme

Hourly Domestic Hot Water programme

Time

Band

Time

Band

In AUTO, the boiler will heat the property to the

temperature set on the i-THINK Controller during

the programmed timed Heating periods

In REDUCED mode, the boiler will maintain a

minimum temperature in the property. If at any time,

day or night, the temperature falls below this value

the boiler will fire until the temperature is achieved.

In COMFORT, the boiler will constantly heat the

property to the temperature set on the i-THINK

Controller. NOTE: This will continue until the boiler

is taken out of COMFORT mode.

8.0 Central Heating & Domestic Hot Water ON

10 Baxi Heating UK Ltd 2011

1. Press the MODE button and rotate the Selector Button

until the flashing Central Heating symbol is seen in the

display. Fig. 22.

2. Press the Selector Button once to confirm the setting

and the OFF will flash.

3. Rotate the Selector Button to scroll through the options

available. In Central Heating, these are AUTO, REDUCED,

COMFORT and OFF. Press the Selector Button to confirm

the setting.

4. Press MENU to escape, or wait 3 seconds and the unit

will return automatically to the main display screen.

NOTE: A delay during this process will cause the unit to

revert back to the main screen. If this happens the process

must be restarted.

1. The Room Temperature can be increased or decreased

during a heating period by rotating the Selector Button to

give the required temperature. Press the Selector Button to

confirm the new setting.

2. The set temperature will return to the ‘Comfort’ mode

value at the next heating demand period.

1. For Combi boilers it is recommended that the Domestic

Hot Water setting is left in the ‘ON’ position. If it is

necessary to alter the setting follow the process shown in

Fig 22.

1. If the symbol ‘Sd’ appears in the display please contact

heateam as your boiler may require servicing. The contact

telephone number is shown on the back page.

8.1 Setting Central Heating to ON

8.3 Setting Domestic Hot Water to ON

8.4 Service Warning

MODE MODE

AUTO

REDUCED

COMFORT

OFF

To Escape

(or wait 3s)

To Escape

(or wait 3s)

Confirm

OFF OFF

ECO

OFF

Confirm

8.2 Manual Override of Room Temperature

AUTO

°C

Fig 23. Typical Operating Modes.

7 day Wireless 7 day Wired 24h Wireless

AUTO

°C

AUTO

°C

Fig 22. Central Heating & Domestic Hot Water activation

Baxi Heating UK Ltd 2011

1. To set the Room Temperature, press the MENU button

and SC ON will appear in the display with the current

Room Comfort Set Point shown.

2. Press the Selector Button and the Comfort Set Point will

flash. This set point can be adjusted up or down by rotating

the Selector Button.

3. Press the Selector Button again to confirm the set point

and then press MENU to return to the main display screen.

The Comfort Set Point is now confirmed.

The Comfort Set Point can be increased or decreased

during a heating period by rotating the Selector Button to

give the required temperature. Press the Selector Button to

confirm the new setting. The set temperature will return to

the previous COMFORT mode value at the next heating

demand period.

1. To adjust the REDUCED set point, press the MENU

button and rotate the Selector Button until ‘Sr Ed’ appears

in the display.

2. Press the Selector Button to access the menu. The

current set point will be seen flashing. The set point can be

adjusted up or down by rotating the Selector Button.

3. Press the Selector Button again to confirm the set point

and then press MENU to return to the main display screen.

The REDUCED temperature is now confirmed.

1. To set the Domestic Hot Water temperature, press the

MENU button and rotate the Selector Button until ‘Sd HU’

appears in the display.

2. Press the Selector Button and the current temperature

set point will flash. The temperature can be adjusted up or

down by rotating the Selector Button.

3. Press the Selector Button again to confirm the

temperature and then press MENU to return to the main

display screen.

The Domestic Hot Water temperature is now confirmed.

1. To adjust the Outdoor Sensor value press and hold the

Selector Button for approximately 6 seconds to access the

parameter menu. Rotate the Selector Button until ‘otC’ is

seen in the display and press the Selector Button to access.

2. Set the required temperature compensation value from

the graph (Fig. 25) by rotating the Selector Button and

pressing to confirm. Press ‘MENU’ until the main screen is

displayed.

9.1 Setting the Room Temperature (Comfort)

9.3 Setting the REDUCED Temperature

9.4 Setting the Domestic Hot Water

9.5 Setting the Outdoor Sensor Curve

9.2 Manual Override of COMFORT setting

9.0 Temperature Settings

Fig 24. Temperature adjustment diagram

Fig 25. Outdoor Sensor Curve Graph

SC ON Sd HUSr Ed

+ °C

- °C

°C °C°C

9.0 8.0 7.0 6.0 5.0 4.0 3.0

2.0

1.0

1.5

1520 10 5 0 -5

Outdoor Temperature

Example: For a minimum outdoor temperature of -10°C and

a required flow temperature of 80°C, the otC value should

be set to 3.0. For further details please see Outdoor Sensor

Kit - Part No. 720103001

Default Value

otC Menu Values

Boiler Flow Temperature

-10 -15 -20 NOTE: This function can not be set or displayed from the boiler

front panel when the Programmer and Room Sensor Controller

is fitted.

7 day version only

10.1 To Set the Time.

10.2 To Set the Day (720644701 7 day Wired &

720644801 7 day Wireless only).

10.0 Setting the Time & Day

12 Baxi Heating UK Ltd 2011

1. From the main display screen press MENU and rotate

the Selector Button until the clock is displayed. Fig. 26.

2. Press the Selector Button once and the hour will flash.

Rotate the Selector Button to increase or decrease the

time. Press the Selector Button once to confirm the hour

setting. The minutes display will now flash.

3. Rotate the Selector Button to set the minutes and press

the Selector Button once to confirm. The time is now set.

Press MENU until the main screen is displayed.

1. Set the Time as described above. Once the Time is

confirmed by pressing the Selector Button, the day symbols

on the right hand side of the screen will flash.

2. Rotate the Selector Button set the day. Monday = 1,

Tuesday = 2 etc. The current day is shown in a small circle.

Press the Selector Button to confirm.

3. The correct time and day should now be shown in the

display. Press MENU once to return to the main display

screen.

Confirm

+ hrs- hrs + min- min

+ day- day

Confirm

°C

NOTE: The clock will not update automatically so will

require manual adjustment.

7 Day

Version

Only

7 day version only

Fig. 26. Setting the Time & Day

1 = Monday

2 = Tuesday

3 = Wednesday

4 = Thursday

5 = Friday

6 = Saturday

7 = Sunday

11.0 Setting Heating & Domestic Hot Water

Baxi Heating UK Ltd 2011

1. Press the MENU button and rotate the Selector Button

until ‘PCH’ is seen in the screen. Fig. 27. Press the Selector

Button once.

7-day version only: Press the Selector Button once and

‘Day 1’ (Monday) will be seen flashing. The display can be

set to either 7 individual days, 5 weekdays and 2 weekend,

or 7 days identical. The 24h version does not have ‘Day’

function displayed.

2. To set the day sequence, rotate the Selector Button until

the required day is displayed. Press the Selector Button to

confirm.

3. The screen displays the time and the letters ‘Pr’ flashing.

Press the Selector Button again and ‘On 1’ flashes.

(Pr = current setting, Pr1, Pr 2 & Pr 3 are presets).

4. Press the Selector Button again and the time flashes. The

first Timed ‘On’ period can now be set. Rotate the Selector

Button to set the desired Central Heating start time.

5. Press the Selector Button to confirm and the first timed

‘Off’ period flashes. Use the Selector Button to set the

required off period. Press the Selector Button once to

confirm.

6. Repeat the above process for ‘On 2’, ‘Off 2’, ‘On 3’ and

‘Off 3’ time periods. If only 2 Heating periods are required

set ‘On 2’ and ‘Off 2’ to the same time (e.g. 12:00).

7. After ‘Off 3’ has been set the screen will show the ‘On 1’

time flashing again. If Programming is complete, press

‘MENU’ repeatedly to return to the main display screen.

1. Press MENU and rotate Selector Button until ‘PdHU’ is

displayed. Fig. 27. Press the Selector Button to confirm and

repeat the sequence as described above.

11.1 Setting the Central Heating

11.2 Setting the Domestic Hot Water

1234567

12345 67

00:00

On 1

7 day

24h

Preset Programmes

Pr1 Pr2 Pr3

OFF OFF OFFOn 2 On 3