10
The appliance must never normally be switched on and off by shutting off the power
supply upstream of the Controle Device (CCP, DDC or consent switch) before having used
the latter first and waited for the shutdown cycle to end (approximately 7 minutes). The
shutdown cycle terminates when the hydraulic pump switches off (no parts in motion).
Shutting off the power supply while the appliance is running can cause permanent dam-
ages to internal components!
If the appliance fails to operate correctly, with the consequent indication of the Ma-
chine code, follow the instructions of Paragraph 9.1 OVERVIEW AND OPERATING CODES/
TROUBLESHOOTING
→
78.
In the event of failure of the appliance and/or breakage of any component, do not at-
tempt to repair and/or restore operation; proceed as follows:
shut off the appliance immediately (if possible and if no dangerous condition ex-
•
ists) through the controls (CCP, DDC or permissive switch) and wait for the end of
the cooling down cycle (around 7 minutes);
immediately get in touch with Technical Assistance.
•
Proper ordinary maintenance ensures the efficiency and good operation of the appli-
ance over time.
Carry out maintenance operations according to the instructions supplied by the
manufacturer.
For the maintenance of internal components of the appliance, contact Technical Assist-
ance; for other maintenance requirements, see Paragraph 7.2 MAINTENANCE
→
73.
Any repair of the appliance must be carried out by Technical Assistance, using only origi-
nal spare parts.
Failure to observe the indications above may compromise the operation and safety of the
appliance, and may invalidate warranty.
If the appliance is to be disposed of, contact the manufacturer for its correct disposal.
If the appliance is to be sold or transferred to another owner, ensure that this “Installation,
user and maintenance manual” is handed over to the new owner and installer.
3�2
notes on oPeRAtIon of tHe APPLIAnCe
The appliance uses the water/ammonia absorption thermodynamic cycle (H
2
0 – NH
3
) to
produce hot water, using atmospheric air as renewable energy source.
The water/ammonia thermodynamic cycle used in the unit GAHP-A is realized in a her-
mitically sealed circuit, directly verified by the manufacturer to ensure the perfect tight-
ness of all joints, thus making refrigerant top-ups completely unnecessary.
description and general characteristics
The air-water gas absorption heat pump GAHP-A is available in the following versions:
Version
•
Ht: optimised for high temperature distribution systems (radiators, fan
coils); it produces hot water up to +65°C in heating mode and up to +70°C in Do-
mestic Hot Water mode.
Version
•
Lt: optimised for low temperature distribution systems (heating floor, low
temperature radiators); it produces hot water up to +55°C in heating mode and up
to +70°C in Domestic Hot Water mode.
