Baxi Ecogen 24/1.0 Installation & Servicing Instructions Manual page 12

6. HOT WATER STORAGE ­ The hot water storage vessel must be of the indirect coil type. All components used in the system must be suitable for operation at 110°C and
at the pressure allowed by the safety valve.
Fig. 8
Method of determining minimum valve of expansion vessel volume for sealed systems
Vessel Charge Initial System
Pressure (Bar) Pressure (Bar)
1.0
1.5
Table. 1
Example :­ System Volume = 75 litres
Vessel Charge Pressure = 1.0 bar
Initial System Pressure = 1.5 bar
Then :­ 75 x 0.152 = 11.4 litres
Expansion Vessel Volume = 12 litres
NOTE Where a vessel of the calculated size is not obtainable then the next available larger size should be used.
page 14
6.7 Controls Component Options for Intelligent Installations
1. A THINK Controller is mounted on the appliance as standard (It can be mounted on a wall cradle and configured to use as an room sensor).
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.
2. There Are 4 other optional control components as well as the THINK Controller which can be used in conjunction with the Ecogen appliance these are: ­
A wired 5 LED Receiver ­ to run on or off the appliance.
An RF 5 LED Receiver ­ to run on or off the appliance.
A wired Wall cradle for the THINK Controller or either 5 LED Receiver.
An RF Wall cradle for the THINK Controller.
3. The following Kits are available: ­
A) A wired Wall cradle with a wired 5 LED Receiver.
B) An RF Wall cradle with An RF 5 LED Receiver.
C) An RF Wall cradle with a THINK Controller.
D) A wired Wall cradle with a THINK Controller.
These can be combined to give the following set ups in the property
All wired connections
1a ­ THINK Controller or 5 LED Receiver
All RF connections or mixed
Multiply Total
Water Content Of
System By (Litres)
1.0 0.087
1.5 0.152
2.0 0.330
1.5 0.125
2.0 0.265