User`s guide

ACF60-00 – Installation, User’s and Maintenance Manual
10 Ed. 04/2012
• air-based heat exchanger with single-position finned coil, manufactured in steel
tubing and aluminium fins;
• water-based exchanger of the shell-and-tube type in titanium alloyed stainless steel,
externally insulated;
• variable-flow microprocessor-controlled axial fan;
• control and safety devices:
- S61 electronic board with integrated microprocessor, LCD display and encoder
(in Figure 1);
- plant water flow switch;
- manually resettable generator limit thermostat;
- differential exhaust gas pressure switch on the combustion circuit;
- automatically resettable exhaust gas thermostat;
- pressure safety valve on the sealed circuit;
- by-pass valve, between the high and low pressure circuits;
- plant water antifreeze function;
- ionisation-based flame control unit;
- gas electrovalve with double shutter;
- heat recovery circulator pump relay (only for HR model)