Electrical Connections; Accessing The Electrical Connections; Connecting The Room Thermostat - Baxi Assure 500 Combi Series Installation And Service Manual

6 Installation
6.4

Electrical connections

Fig.38 Accessing the circuit board
Fig.39 Connecting the room thermostat RT
42 Assure 500 Combi 2
The electrical safety of the equipment is only ensured when it is correctly
connected to an effective earthing system in accordance with the
prevailing safety standards for installations. The boiler must be electrically
connected to a 230 V single phase + earth mains supply using the three-
wire cable provided, respecting the Line-Neutral polarity.
Caution
This connection must be made using a two-pole switch with
contact opening of at least 3 mm.
If the power supply cable must be replaced, a harmonised "HAR H05 VV-
F" 3x0.75 mm2 cable with a maximum diameter of 8 mm must be used.
Warning
Check that the total nominal consumption of the accessories
connected to the appliance is less than 1 A. If it is higher, a relay
must be installed between the accessories and the electronic
board.
6.4.1

Accessing the electrical connections

See
Section 10.3.1 Accessing the boiler components to remove the
front cover
To access the electrical connection board:
1 Pull the control panel downwards (1).
2 Lift the rear cover (2).
3
Release the catches to remove the cover (3).
Important
Do not use excessive force as this could break the plastic hooks.
The supply cable is connected to the connection PCB using
the CB1 connection (Fig. 39).
The connections are as follows:
L: 230 V (brown wire)
N: Neutral (blue cable)
: Earth connection:
6.4.2

Connecting the room thermostat

Before connecting the room thermostat (RT) or Open Therm (OT)
device, remove the link wire on the terminal board as shown in figure 39.