Electrical Connections; Connecting The Power Supply; Adjustment Functions - RHOSS KCMS/PCM Instrucciones De Uso

II.3.6

ELECTRICAL CONNECTIONS

IMPORTANT !
The electrical connection of the unit mu st be
carried out b y qualified p ersonnel in comp lian ce
with the regulation s applicable in the countr y wh ere
the unit is in stalled. RHOSS S.p.a. shall not be held
liable for damag e to per sons or prop ert y caused b y
a non-compliant electrical connection.
DANGER !
Always install a general cir cuit breaker in a
protected ar ea n ear the machine with a d elayed
characteristic curve, ad equate cap acit y and
breaking po wer. There must be a min imum opening
distance of 3 mm bet ween the contacts.
The earth connection is m andator y b y law and
protects the user while the machine is in u se.
Unsheathing oper ations must onl y be c arried out near the terminals.
Use suitable c able-ends for the ter minals used.
After having ins erted the cable-end i nto the ter minal, tighten the screws
with a screwdri ver, without appl ying excessi ve force: once c ompleted,
gently pull the cabl es to verify they are tightened c orrectl y.
Use the cable gland in the elec tronic board compartment to bloc k the
cables or bloc k them to the unit.
II.3.7

CONNECTING THE POWER SUPPLY

Chec k that the voltage and the frequenc y of the electrical s ystem
correspond to 230V (± 10%) single phase at 50 Hz; that the available
installed power is sufficient for operation and that the cables of the
suppl y line ar e of adequate s ection for the maximum current required.
Make sure the el ectrical suppl y s ystem complies with current Nati onal
safety regulations.
Use a fl exible bipol ar + earth cable with AWG 14-22 secti on with PVC
sheathing that is not lighter than H05RN-Fto c onnect the unit to the
mains . The earth c onductor must be l onger than the other c onductors
for it to be the las t to be stretc hed if the cabl e fastening devic es should
become slac k.
The connections must c ompl y with the wiring diagrams (see A1
Wiring diagrams).
II.3.7.1 Connecting the digital inputs
SCR-EIR-SIC-ECO
The connection between the board and the remote s witc h must be
carried out with a s hielded c able consisti ng of 2 twisted 0.5 mm²
conductors and the s hield. The shiel d must be c onnected to the earth
screw (on one si de onl y).
The maxi mum distanc e allowed is 30 m.
II.3.7.2 Connecting the control panel (KPCM - KCIM)
The connection between the board and the c ontr ol panel mus t be
carried out with a s hielded c able consisti ng of 3 twisted conductors
having an AWG 14-22 sec tion and the s hield. The shiel d must be
connected to the earth screw (on one si de onl y). The maxi mum
distanc e allowed is 30 m.
II.3.8

ADJUSTMENT FUNCTIONS

II.3.8.1 FULL AUTO
In FULL AUTO, the ter minal unit detects the room temperature and
decides which mode to acti vate ( heating or cooling) according to the
set-point configured by the user. The mode is described in the following
chart.
1
3 4 5
P05 P03 P02
P04
P02 = Automatic z one differential OFF-cooling (2°C)
P03 = Automatic z one differential OFF-heating (2°C)
P04 = Automatic c ooling hysteresis (0.5°C)
P05 = Automatic heating hysteresis (0.5°C)
Key:
1
= mode
2
= room temperature
3
= heating
4
= OFF
5
= cooling
2
The fan and col d/hot water val ve are managed as in c ooling/heati ng. In
the FULL AUTO OFF mode, the cold/hot water val ve is closed and the
periodic ventilation function is acti ve (onl y if the temperature is
controlled with probe ST 1 fitted on the terminal unit).
If the room temperatur e at the inl et is within the hys teresis areas i n
FULL AUTO mode, priority is given to the heating mode.
When the c ooling mode is acti vated, the adjustment s et-point is gi ven
by set-point + P02, whereas in heating mode, the adjus tment set-point
is given by set-point - P03.
II.3.8.2 FULL AUTO + RESISTANCE
The FULL AUTO + ELECTRICAL RESISTANCE functi on c onsists of
the FULL AUTO mode with the elec trical resistanc e being ac tivated
automaticall y (if declared to be pres ent), accor ding to the detected hot
water temperature; it can therefore complement or replace the hot water
coil.
II.3.8.3 COOL
COOL is the "c ooling" function. In this operating mode, the adjustment
can be s et as desired for maximum comfort, by:
selecting the desired temperature val ue;
setting the fan operating s peed manually (*) or automaticall y
(AUTOFAN);
Activation of the c old water val ve is deter mined acc ording to the
configured set-point (s ee the chart below), whereas the fan is acti vated
via the TOO COOL func tion ( at the s elected s peed or deter mined by the
AUTOFAN function). When the room temperature (i.e. the adjustment
probe value) reac hes the set- point, the c old water val ve is closed and
the fan is deacti vated.
1
set point
ON
OFF
P06
P06 = T hermostat hysteresis (0.5°C)
(*) in case of a fan with an EC-Brushl ess motor, the s peeds are defined
by the followi ng parameters:
P129 = Minimum fan speed is set manuall y (20%).
P130 = Medi um fan speed is set manuall y (60%)
P131 = Maximum fan speed is s et manuall y (100%).
Refer to paragraph II.3.12.1 "Setti ng the three s peeds".
II.3.8.4 DRY
The room temperatur e is previ ousl y adjusted accor ding to the
configured set-point, cooling if nec essar y, to then proceed with the
dehumi dification. When i n dehumi dification, the c old water valve al ways
remains open and a number of fan start-up/s witch-off c ycles are run at
minimum speed. However, the TOO COOL function is ac tive to make
sure the temperature of the heat exchanger is s ufficiently low so as to
guarantee c ondensation of the water vapour. When the r oom
temperature reaches the s et-point, dehumidification stops, the fan is
stopped and the cold water val ve is clos ed.
1
3 4
P06
3 °C
P06 = T hermostat hysteresis (0.5 )
39
SECTION II: INST ALL ATION
Key:
1
= status of the valve
2
= room temperature
2
Key:
1
= mode
2
= room temperature
5
3
= ventilation = OFF,
valve = closed
4
= dehumidification:
ventilation = cycles at
min. speed, valve =
P06
open
2
5
= cooling:
ventilation = user
selection, valve = open