Technical data
Installation, user and maintenance manual – GAHP-GS/WS
5
2   SAFETY WARNINGS
Packing items (plastic bags, polystyrene foam, nails, etc.) must be kept out of the reach of 
children, as they are potentially dangerous.
The appliance must only be used for the purposes for which it has been designed. Any 
other use is considered inappropriate and therefore dangerous. The manufacturer does 
not accept any contractual or extra-contractual liability for any damage caused by im-
proper use of the appliance.
The appliance is not intended to be used by persons (including children) whose physical, 
sensory and mental capacities are impaired, or who lack the necessary experience and 
knowledge, unless they are supervised or instructed in its use by persons responsible 
for their safety. Children must be supervised to ensure that they do not play with the 
appliance.
The unit uses a water/ammoniac absorption cycle for hot/cold water production. The am-
moniac is in water solution inside a sealed circuit tested for tightness by the manufac-
turer. In case of coolant leaks, switch off the electrical power and gas supplies only if this 
can be done in total safety. Contact your Authorised Service Centre.
If installed indoors, the safety valve must be ducted. Refer to Chapter 5.9 SAFETY VALVE 
DISCHARGE ROUTING → 43 of this manual for instructions. The unit MAY NOT BE OPER-
ATED if the safety valve is not ducted.
Frequent topping up of the hydraulic with water can result in damage due to scale and 
corrosion, depending on the quality of the water being used. Make sure the system is 
water tight and that the expansion tank is operational.
Concentrations of chlorides or free chlorine in the circuit above the values given in Table 
5.1 Chemical and physical parameters of water → 29 will damage the unit's water/am-
monia exchanger.
Close the gas supply before working on the gas circuit. On completing work on the gas 
circuit, check for leakages as required by established regulations.
Do  not  operate the appliance if dangerous conditions exist: odour of gas in the grid 
or near the appliance; problems with the electrical/gas grid or  hydraulic circuit; parts 
of the appliance submerged in water or otherwise damaged; controls or safety compo-
nents bypassed or defective. In these cases, ask for assistance to professionally qualified 
personnel.
If you smell gas:










