2
Gasogen
Contents
1 - SYMBOLS USED IN THIS MANUAL
When reading this manual, particular care has to be given to the parts marked with the followings symbols:
NOTE! Suggestions for the
user
WARNING! Indicates a potentially
dangerous situation for the product
and the environment
DANGER! Indicates se-
rious danger for your
personal safety and for
your life
2 - A CORRECT USE OF THE APPLIANCE
The GASOGEN G3 2S appliance has been designed utilizing today’s heating technology and in compliance with
the current safety regulations.
However, following an improper use, dangers could arise for the safety and life of the user or of other people, or
damage could be caused to the appliance or other objects.
The appliance is designed to be used in pumped hot water central heating systems.
Any other use of this appliance will be considered improper.
UNICAL declines any responsibility for any damages or injuries caused by an improper use; in this case the risk
is completely at the user’s responsibility.
In order to use the appliance according to the foreseen scopes it is necessary to carefully follow the instructions
indicated in this manual.
3 - WATER TREATMENT
The hardness of the mains water supply conditions the frequency with which the heat exchanger is cleaned.
In hard water areas where the main water can exceed 15°f total hardness, a scale reducing device is recom-
mended. The choice of this device has to be made taking into consideration the characteristics of the water.
We recommend you to check the state of cleanliness of the domestic hot water heat exchanger at the end of the
first year and subsequently every two years; in this occasion check the state of wear of the anode.
CONTENTS
1 Symbols used in
this man ual .................................................................................................................................................... 2
2 Correct use of
the appliance
..................................................................................................................................................... 2
3 Water
treatment
......................................................................................................................................................................... 2
4 Information to be passed over to the end user by the installer/servicing engineer ................................................................. 3
5 Safety warnings ......................................................................................................................................................................... 3
6 Operating instructions ............................................................................................................................................................... 4
6.1 Standard controlpanel ....................................................................................................................................................... 4
6.2 Optional control panel ........................................................................................................................................................ 7
6.3 Checks to carry out before firing the boiler ...................................................................................................................... 12
6.4 Boiler start-up ................................................................................................................................................................... 12
6.5 Combustion air adjustment .............................................................................................................................................. 13
6.6 Checks to carry out after first start-up ............................................................................................................................. 14
6.7 Warnings ........................................................................................................................................................................... 15
6.8 Summer operation ............................................................................................................................................................ 15
6.9 Servicing ........................................................................................................................................................................... 16
6.10 Fault finding ..................................................................................................................................................................... 18
-.-
Easily replaceable spare parts ......................................................................................................................................... 20
