Technical data

37
10.0 Electrical
© Baxi Heating UK Ltd 2012
10.1 Making The Electrical Connections
This appliance shall be connected to a suitably protected
electrical supply i.e., 16A - see section 7.7.
NOTE: Ensure all cables are secured using the cable clamps
provided. When accessing the appliance controls area, take
care not to let the control box drop down in an
uncontrolled manner as this may cause damage.
1. To gain access to the controls tray / electrical wiring area,
remove the outercase by lifting off the plastic fascia that is held
on by two magnets. Undo the two screws holding the
outercase, pull the bottom edge forward, lift and disengage from
the top of the appliance (Fig. 40).
2. Slacken the four screws from the bottom cover and remove
the cover (Fig. 40).
3. Remove the two screws holding the control tray. Pull the
front of the control tray forward and lower it carefully (Fig. 41).
DO NOT allow the tray to fall in an uncontrolled manner.
4. Ensure all cables are secured using the cable clamps provided.
5. Ensure that the lengths of the live and neutral conductors are
shorter that the earth conductor, so that if the cable slips in its
anchorage the current carrying conductors become taut before
the earth conductor.
10.2 System installation options.
1. There are two installation options available, Intelligent and
Retro. Y-plan, S-plan, W-plan and S-Plan with a second heating
circuit are all available both with Intelligent and Retro
installations.
IMPORTANT: Before running the appliance ensure
parameter 5700 has been set according to the type of system
installed. See sections 10.4 to 10.11 for system types and
section 11.3.k for the change procedure.
A) An Intelligent system operates the Ecogen with room
sensors, an optional extra outdoor sensor (an outdoor sensor
can only be installed in conjunction with a room sensor to
enable weather compensation), a DHW tank sensor or DHW
tank thermostat and will give the highest overall efficiency with
increased electrical power generation and is therefore the
recommended way to install the appliance.
The Removable THINK Controller must be used as a
Programmable Room Sensor for all intelligent installation.
B) Retro installations operate the Ecogen with a new or existing
external system wiring centre. This means that the installer has
the option to retain an existing room thermostat, DHW
thermostat and programmer. An outdoor sensor for weather
compensation cannot be used in this case. The THINK
Controller must remain on the appliance (See Section 10.11).
Bottom Cover
Control Cover
Control Tray
Plastic
Fascia
Fig. 40
Fig. 41