8
REMKO RR
Adjustable systems and
functions
Two-wire system with one valve for
cooling or heating (J1=B):
The controller can be used to control
a system with a heating/cooling valve
in a two-wire system: a system with
a valve-controlled, half-yearly generated
warm medium in winter, e.g. through
a boiler, and half-yearly generated
cold medium in summer, e.g. through
a chiller. But also unswitchable, e.g.
air-water or brine-water heat pumps can
feed a two-wire system.
A heat exchanger in the indoor unit can
then give off the heat or cold.
Only a valve connected to terminal 7-8
regulates the medium-side flow rate in
the heat exchanger of the indoor unit in
both operating modes.
The operating modes can be switched
manually at the controller by means
of the operating mode selector switch
or automatically by means of the inlet
temperature sensor SM.
A heating valve connected to terminal
7-8 and a cooling valve connected to
terminal 8-9 regulate the medium-side
flow rate into the heat exchanger of the
indoor unit in both operating modes.
The operating modes can be switched
manually at the controller by means
of the operating mode selector switch
or automatically by means of the inlet
temperature sensor SM.
Four-wire system with a valve for cooling
and a valve for heating (J1=A):
The controller can be used to control
a system with a cooling valve and
a further heating valve in a four-wire
system: a system with a valve-controlled,
half-yearly generated warm medium
in winter, e.g. through a boiler, and
a second system with half-yearly
generated cold medium in summer,
e.g. through a chiller.
A heat exchanger "cooling" and
a further heat exchanger "heating"
in the indoor unit can then give off the
respective heat or cold.
Two-wire system with a valve for cooling
and an electric heating element for
heating:
The controller can be used to control
a system with an electric heating
element for heating and a valve for
cooling in a two-wire system: an electric,
half-yearly heating element in winter,
and a second system with half-yearly
cold medium in summer, e.g. by a chiller.
A heat exchanger for cooling and
an electrical heating element for heating
in the indoor unit can then give off the
respective heat or cold. An electrical
heating element connected to terminal
7-8 and a cooling valve connected to
terminal 8-9 regulate the control of the
heating element and the medium flow
rate on the medium side in the heat
exchanger of the indoor unit.
The operating modes can be switched
manually at the controller by means
of the operating mode selector switch
or automatically by means of the inlet
temperature sensor SM.
If heating elements are used, it is
necessary to have the fan run on after
the heating element has been switched
off to suit the local conditions (to be
provided by the customer).
Summary of Contents for RR 22.0
Page 2: ......
