RHOSS KCF/P User Manual

ELECTRONIC CONTROL FOR TERMINAL UNITS
15
II.3.3.7 RADIANT MANAGEMENT LOGIC
Four configurations are possible:
Fancoil summer / winter + winter head
contact at the same time
2T + Radiator
Fancoil summer only + winter head contact 4T
Fancoil summer / winter + winter head
contact
2T+Radiante
Without fan coil, only winter radiating head
contact
4T
Fancoil summer / winter + winter head contact at the same time
(2tubi + radiatore)
This management is obtained by configuring the fan coil in 2 tubes (see
Dip-switches configuration): the Out1 output activates the hot / cold
water valve while the Out2 output is not active.
The radiator head must be connected in parallel to the water valve,
excluding it in the summer using an external relay and the accessory
KDO2 (configure Aux1 as summer / winter output H21 = 1).
Fancoil summer only + winter head contact (4 tubes)
This management is obtained by configuring the fan coil in 4 tubes (see
Dip-switches configuration): the Out1 output activates the radiant head
in hot conditions (the fan is blocked for the activation of the HOT
START function) while the Out2 output activates the water valve cold.
Fancoil summer / winter + winter head contact (2tubi + radiante)
This function is obtained by configuring the fancoil in 2tubi + radiant
(see Dip-switches configuration): the Out1 output activates the hot /
cold water valve in two-pipe systems while the Out2 output activates the
radiant head for floor systems.
Based on the setpoint set by the user, the activation of the radiant head
is decided (see graphic below): the fan is blocked for the activation of
the HOT START function.
When the room temperature (intended as the value of the control probe)
reaches the setpoint, the radiating head is closed.
P00 = Thermostat differential (0.2 °
C)
P11 = Set Point
Legend:
H = state of the radiating
head
Ta = room temperature
However, if the room temperature drops below the parameter dFH and
this situation remains longer than the time defined by parameter dEH,
then the hot valve is also activated.
Both remain open until the setpoint is reached.
Without fancoil, only winter radiating head contact (4tubi)
This management is obtained by configuring the fan coil in 4 tubes (see
Dip-switches configuration): the Out1 output activates the radiant head
in hot conditions (the fan is blocked for the activation of the HOT
START function) while the Out2 output is not used.

RHOSS KCF/P Specifications

General

Brand	RHOSS
Model	KCF/P
Category	Controller
Language	English