Install Instructions

Reset
On the back panel, there is a specific reset button, in case it is necessary to retore the initial
settings.
If the date and time are not set after the reset, the controller will operate according to
the factory default settings.
Actuation relays
The circuit board and terminals show the relay contacts used to manage auxiliary equipment
and to report alarms.
• Relay 1: Circulation pump (active during disinfection) Connect Relay 1 in parallel to
time clock or aquastat contacts (whatever switch is controlling recirculation pump).
• Relay 2: Generic alarm (sensor fault, battery fault, blackout or clock failure).
• Relay 3: Second thermostat. Wire in parallel to High Temperature thermostat. Use to
increase hot water supply temperature for thermal disinfection.
• Relay 4: flushing valves
Summary of actuation relay status
Operating Status Adjustment Disinfection Flushing Thermal shock
Relay Contact status Contact status Contact status Contact status
Relay 1: recirc pump Open Closed Closed Closed
Relay 2: generic alarm Open Open Open Closed
Relay 3: second thermostat Open Cloase Open Closed
Relay 4: flush valves Open Open Closed Open
16
Recirculation pump
Relay 1
Storage primary pump
Relay 3
140°F
160°F
Wiring diagram of relay 1 with a clock for
managing the recirculation pump times.
Wiring diagram of relay 3 for connecting the
second thermostat on hot water storage.