Prepayment kit for SATK series HIUs
1
Code 789835
Function
The prepayment kit is meant to provide an interface to connect SATK20-30-40-50-60 series
HIUs with external units that manage the prepayment logic for the provision of heating and
domestic hot water to the housing units. In case the tenant runs out of credit, the prepayment
kit disables heating services, commanding the closing of the primary circuit that provides
heating power to the heat interface unit, while the electronic controller returns an error
message (FAULT LED on, with error “80” shown on the display)”.
© Copyright 2018 Caleffi
INSTALLATION MANUAL
78239.01
www.caleffi.com
The following instructions must be read and understood before installing and
maintaining the device.
CAUTION! FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN A
SAFETY HAZARD!
CAUTION
: Risk of electric shock. Live parts. Cut off the electric supply before opening the device box.
1 During installation and maintenance procedures, always take care to avoid direct contact with live
or potentially hazardous parts.
2 The device must not be exposed to leakages or humidity, direct sunlight, bad weather, sources of
heat or high-intensity electromagnetic fields. This device cannot be used in areas at risk of
explosion or fire.
3 The device must have a separate connection to an independent bipolar switch. If the equipment
needs maintenance, cut off the electric supply before any work is carried out. Do not use devices
with automatic or timed reset, or which may be reset accidentally.
4 Use suitable automatic protection devices in accordance with the electrical characteristics of the
zone in which the device is installed and in compliance with current legislation.
5 The device must always be earthed before it is connected to the electric supply. If the device needs
to be removed, the earth connection should always be disconnected after the other electrical wires.
Make sure that the building has been earthed professionally, in accordance with current legislation.
6 Electrical installation must only be carried out by a qualified technician, in accordance with legal
requirements.
7 If the power supply cord is damaged, it must be replaced by the manufacturer or technical
assistance service or qualified technical personnel in order to prevent any risk.
WARNINGS
