Introduction - Baxi 720644701 Installation & User's Instructions

21
AUTO
18
15
MODE
Fig. 1 Programmer & Room Sensor
Fig. 2 Receiver
1
24
2
21 3
AUTO
3
°C
18 6 4
5
15 9
6
12
7
MODE MENU
Fig. 3 Programmer & Room Sensor - Wired version
1
24
2
21 3
AUTO
3
°C
4
18 6
5
15 9
6
12
7
MODE MENU
Fig. 4 Programmer & Room Sensor - Wireless version
c
Baxi Heating UK Ltd 2011
1
24
2
3
3
°C
6 4
5
9
6
12
7
MENU
(720644801 shown)
Boiler
Unit
Boiler
Unit
Receiver

2.0 Introduction

2.1 General Introduction
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.
2.2 Wireless versions (720644801 & 720644901)
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.
NOTE: If the batteries are left flat the unit will only retain
its settings for a maximum of one week.
3. The batteries have a lifespan of approximately 2 years.
Batteries should be changed within this timescale as a
precaution.
NOTE: If the batteries are flat the boiler will return to a
default setting of Boiler ON.
4. The Clock Function will need to be checked every time
the batteries are replaced.
2.3 Technical Specifications
Insulation Class II
IPX Rating IP44
Operating Temperature -5°C to 50°C
Transmission Frequency 868MHz
(Wireless only)
3