2
1 - SYMBOLS USED IN THE MANUAL
Pay special attention when reading this manual to the parts marked by the symbols:
NOTE!
Suggestions for the user
ATTENTION!
Possible hazardous situation
for the product and the environment
DANGER!
Serious danger for
personal safety and life
2 - APPROPRIATE USE OF APPLIANCE
The FIREX appliance has been constructed according to the current level of engineering and acknowledged
technical safety rules.
Nonetheless, if improperly used, dangers could arise for the safety and life of the user and other persons
or damage to the equipment or other objects.
The appliance is intended to operate in hot air circulation heating systems. Any other use must be consid-
ered improper.
UNICAL shall not be held liable for any damage resulting from improper use; in this case the user is fully
responsible for the risk.
Use according to the intended purposes also includes careful compliance with the instructions in this manual.
3 - WATER TREATMENT
• The hardness of the feed water conditions the frequency at which the domestic hot water producer must be cleaned.
• If the water has a hardness greater than 15°f, we recommend using water softeners, chosen according to the
characteristics of the water.
• We recommend checking and cleaning any installed D.H.W. exchanger at the end of the first year of use and every
two years thereafter; on this occasion, also check the state of wear of the anode.
TABLE OF CONTENTS
1 Symbols used in the manual ......................................................................................................................................................
2
2 Appropriate use of appliance ......................................................................................................................................................
2
3 Water treatment .........................................................................................................................................................................
2
4 Information provided to the user by installer/maintenance technician ........................................................................................
3
5 Safety warnings ..........................................................................................................................................................................
3
6 Operating instructions ................................................................................................................................................................
4
6.1 Panel board .........................................................................................................................................................................
4
6.2 Checks before commissioning .............................................................................................................................................
6
6.3 The wood ........................................................................................................................................................................... 10
6.4 Wood humidity ................................................................................................................................................................... 10
6.5 Dimensions ........................................................................................................................................................................ 10
6.6 Start-up .............................................................................................................................................................................. 10
6.7 Combustion air adjustment ................................................................................................................................................ 11
6.8 Checks to be carried out after commissioning ................................................................................................................... 12
6.9 General warnings .............................................................................................................................................................. 13
6.10 Summer mode ................................................................................................................................................................. 13
6.11 Maintenance .................................................................................................................................................................... 14
6.12 Troubleshooting ............................................................................................................................................................... 15
