SECTION 5
-
Electrical & Wiring instructions
Typical screen display when in operation.
User is in credit.
Screen display when
NO CREDIT.
(Backlight is ON)
The connections on the low voltage board inside the controller are 0 voltage.
Applying any voltage from external source will destroy the board and void any warranty on the HIU.
Connection of Pre
-
Payment Billing Systems
For installations where the landlord of the properties has fitted a metering system that enables a scheme where
the tenant pays for heat by pre
-
payment, the HIU is required to have the capability to shut down the supply of
heat when payment agreements have not been met. This is usually achieved by the billing system sending a signal
to the HIU when credit is no longer available.
The SIGNAL from the prepayment system maybe 230v or VOLT FREE—this must be checked before connection!
The HIU Controller has an auxiliary connection terminal that facilitates this option. The billing system working in
conjunction with the heat meter selected by the consultant or energy provider, may send a 230v signal to the
relay provided in the Accessory Kit while the tenant is in credit.
IMPORTANT CHECK THIS WITH THE SUPPLIER OF THE BILLING SYSTEM!
IF THE SIGNAL FROM THE BILLING SIGNAL IS VOLT –FREE IT CAN BE CONNECTED DIRECTLY TO THE
AUX TERMINALS WITHIN THE CONTROLLER COVER—SEE PAGE 3
The relay accessory (See
PART 8 of SECTION 4)
is connected by the installer to the AUX terminals marked in the
low voltage board on the controller. Part Code for RELAY is
HIAC04230KIT
If credit is not available, then the 230v signal is suspended, relay deactivates, and in turn the controller closes the
PICV. Availability of DHW and Heating is suspended until credit is restored.
When the
‘
NO CREDIT
’
sequence is activated, the controller will show a warning message on the display.
See below,
‘
Screen display when NO CREDIT
’
illustration.
Any application of HIGH VOLTAGE to the connections on the controller will destroy the printed circuit boards
and not be covered by the manufacturer
’
s warranty!
09/17 E & OE
Summary of Contents for Hiper Xi45 INDIRECT HIU 45DHW/10HTG
Page 28: ...09 17 E OE ...
