For The Installer - IVT 495 TWIN Manual To Installation, Commissioning And Maintenance

INSTALLER

For the installer

The following pages contain essential
information for the correct installation
of the plant.
The IVT 495 TWIN is a heat pump recycling
energy from the outside air and the ground. It is
supplemented with an electric element operating
on a double-shelled tank with a hot water heater.
Reloading takes place by the ground coil being
in operation when no heating or hot water is
required. No reloading occurs during summer-
time.
The IVT 495 TWIN is controlled by the outdoor
temperature through an outdoor temperature
sensor. This is normally sufficient to achieve a
comfortable indoor climate. A room sensor can
also be used as a complement to the outdoor
sensor (accessory). This is installed by your
service engineer or installer. The sensor affects
NOTE: The heat pump must not be run until the ground coil
IVT 495 TWIN 9518799
is filled with heat transfer fluid, freeze protected to -15ºC!
Only manual operation is permitted.
the heat curve by increasing or reducing the flow
temperature to adapt to the selected indoor
temperature.
A green control lamp on the front of the unit
shows that the power is on and everything is
working normally. When the lamp flashes it means
that the system is turned off. Note that there is still
power in the system. A red control lamp indicates
that something is wrong and the fault is shown in
plain text on the display screen.
It is also possible to test run all the heat pump
components individually.
A power guard is available as an accessory to the
IVT 495 TWIN to prevent overloading the main
fuses.
30