USER MANUAL
07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
WPHA/WPHBA
SELF CONTAINED HORIZONTAL AIRCONDITIONERS
Thank you for trust in HITECSA Product. From our company we are offering to the market, for more than 30 years, an extended
range of specialized units for air conditioning and cooling installations. Our approach is based in efficiency, flexibility,
manageability and practical solutions. It has built a hallmark of our product catalogue.
The versatility of our factories allows us to contribute solutions almost customitzables in each project, searching a solution for
every problem that arises in design and implementation of air conditioning installations.
From Hiplus Aire Acondicionado’s team, once more thank you very much.
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
CONTENTS
GENERAL OPERATING FEATURES: .............................................................................................. 4
THERMOSTAT OPERATION: .......................................................................................................... 5
LEVEL PARAMETERS ................................................................................................................... 11
ELECTRICAL CONNECTION DIAGRAM, 12 POLE TERMINAL BOARD: ...................................... 14
ELECTRICAL CONNECTIONS TO RJ45 CONNECTOR: ............................................................... 15
iDigit Control
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07.16 207674 Rev100
GENERAL OPERATING FEATURES:
Digital electronic thermostat, large blue LCD display with adjustable backlighting
Developed and designed to control fan coil and hydronic cassette units
Hourly and weekly programming as standard
Perennial calendar clock and integral battery as standard
RS485 bus connection fitting as standard
Device totally controlled using Modbus communications protocol
Operation with 2 pipe − 4 pipe − fan only − heat pump (P04) systems
Control of electric heater as alternative or addition (P07)
Control of outdoor air recycling gate valve
Control of humidification/dehumidification/read only with internal humidity sensor (optional)
Automatic/manual/centralized setting of SUM/WlN operating mode switching (P09)
Continual or thermostat−controlled fan operation (P05)
Automatic/manual fan speed switching
Air temperature monitored by internal probe or remote air probe (automatic probe recognition)
Antifreeze function even with thermostat off
Filter fouling alert as standard
Fan trigger temperature thresholds can be set separately for heating and cooling operation (P18 and
P19)
SUM/WlN switching temperature thresholds can be set separately for heating and cooling operation
(P16 and P17)
Automatic SUM/WlN mode switch on the basis of output temperature (P08 and P09)
Automatic SUM/WlN mode switch on the basis of air temperature (P09)
Centralized comfort/economy operating control
Control of ON−OFF valves, modulating valves and floating valves integrated in a single product code
Control of conventional 3−speed fan units and energy−saving brushless units
lnputs for control of window contact, economy contact, auxiliary contact, and bathroom and fire alarm
lnputs for hotel functions, such as: bathroom alarm − fire alarm − room empty/occupied
Outputs for hotel functions, such as: courtesy light control − control of bathroom fan with room
occupied
lnfra−red remote control receiver (optional)
Monitoring of fan power drawdown with control of failure thresholds and alarm output (P35 and P36)
Setting/reduction of length of temperature scale controllable by parameters (P23 and P24)
Keyboard lock function
Diagnostic function for troubleshooting of thermostat and system malfunctions
Quiet regulation thanks to use of triac control technology
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
THERMOSTAT OPERATION:
The user controls the unit by means of four keys beside the display:
− button (Plus)
Press this button to access display of the current temperature setpoint, press it again to
increase the setpoint in steps of 0.1˚C each time it is pressed, or hold down for 5” to increase
the setting at high speed.
After 10” the device automatically quits the temperature setpoint setting function; to quit faster,
press the on−off key for a short time.
This key is also used for surfing, scrolling and increasing within the various programming
menus.
−
button
(Minus)
Press this button to access display of the current temperature setpoint, press it again to
decrease the setpoint in steps of 0.1˚C each time it is pressed, or hold down for 5” to
decrease the setting at high speed.
After 10” the device automatically quits the temperature setpoint setting function; to quit
faster, press the on−off key for a short time.
This key is also used for surfing, scrolling and decreasing within the various programming
menus.
−
button
(ON/OFF)
Press for 2 seconds to switch the device on or off; with the thermostat off, OFF appears on
the display, while the room temperature, clock, alarms (if any) and relative humidity (optional)
display functions are still operational.
This key is also used to quit the various setup menus.
−
button
(Menu)
Press quickly to access the user setting submenus; FAN flashes on the display. Press + or −
to select the various menus in rotation:
Key
Main function
Secondary function
Temperature setpoint increase
Scroll/increase variables
and parameters
Temperature setpoint decrease
Scroll/decrease variables
and parameters
ON−OFF
Menu ESC function
Access/scroll menus
Setting save function
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Selecting the fan menu
Press the menu key, scroll through it with the + key and select FAN with the menu key.
Then press the + key again to select the fan operating speed, manual with SP 1−SP 2− SP
3 or automatic with AUT:
= Medium speed set (66% for brushless electronic fans)
=Top speed set (100% for brushless electronic fans)
= The thermostat will select the fan operating speed automatically in response to
the difference between the room temperature and the temperature set.
The maximum speed will be reached on the basis of the proportional band set (P11).
Confirm the setting required by pressing the menu key.
lf thermostat operating mode is selected (P05=0) the fan stops when the temperature required (setpoint) is
reached.
lf continual operating mode is set (P05=1) the fan continues to operate at the speed set if
manual selection mode is active, or at the minimum speed if the current selection mode is
automatic.
lf the system output probe is connected, the fan operates on the following principle:
2 pipe system: the device responds to both the minimum fan speed enabling (P18) and
maximum fan speed enabling (P19) signals
4 pipe system: the device responds to the minimum fan speed enabling signal (P18) but
ignores the maximum fan speed enabling (P19) signal
N.B.: when the fan is operating on the basis of the enabling signals, it does not start until the
temperature set in the relative parameter is reached.
Selecting
Heating / cooling / fan operating mode
Press the menu key, scroll through it with the + key and select MODE with the menu key. Then
press the + key again to select the operating mode required: COOL, HOT, FAN.
Confirm the setting required by pressing the menu key.
WARNlNG: if automatic/centralised operating mode change has been selected (P09) the
= Minimum speed set (33% for brushless electronic fans)
= Cooling function
= Heating function
= Fan only function
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
MODE selection menu will not appear.
ECONOMY-COMFORT operating mode selection
Press the menu key, scroll through it with the + key and select ECON with the menu key. Then press the +
key again to select one of the two operating modes: ECONOMY and COMFORT
Confirm the setting required by pressing the menu key.
= COMFORT mode, the thermostat operates on the basis of the temperature setpoint
=selecting the ECONOMY function saves energy by varying the temperature setpoint by the value
set in parameter P10, reducing the setpoint in heating mode and increasing it in cooling mode.
This function can be enabled even in centralised control mode by closing the contacts of pin 1 of the RJ45;
the function will be disabled when the contact is broken.
Réglage de l'heure et de la date de l'horloge
Press the menu key, scroll through it with the + key and select TIME with the menu key:
HRS: the hour figures flash: use the +/− keys to set the current hours and confirm with the menu key
MIN: the minute figures flash: use the +/− keys to set the current minutes and confirm with the menu key
DAY: the day figures flash: use the +/− keys to set the current day and confirm with the menu key
MON: the month figures flash: use the +/− keys to set the current month and confirm with the menu key
YEA: the year figures flash: use the +/− keys to set the current year and confirm with the menu key
Weekly programming
Press the menu key, scroll through it with the + key and select PROG with the menu key:
Select the day of the week to be programmed by scrolling to it with the + key:
SUN = Sunday
MON = Monday
TUE = Tuesday
WED = Wednesday
THU = Thursday
FRl = Friday
SAT = Saturday
Selecting the day of the week to be programmed and confirming it with the menu key access the time−band
F1 and F2 programming function:
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Press the menu key and set the starting hours for band F1
Press the menu key and set the starting minutes of band F1
Press the menu key and set the operating temperature for band F1
Press the menu key and set the starting hours for band F2
Press the menu key and set the starting minutes of band F2
Press the menu key and set the operating temperature for band F2
Use the + key to select another day for programming or quit by pressing ESC.
Table 1: Example of daily programming settings: 09:00 with F1 setpoint 20˚C −− 20:00 with F2 setpoint
15˚C
Table 2: example of weekly programming settings:
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
Table 3: example of weekly time program set in table 2
The icon on the display illuminates to indicate that the thermostat is performing a daily program
Day
F1 Time
F1 Setpoint
F2 Time
F2 Setpoint
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Alarm message display
This menu can only be accessed when at least one alarm state is present; the icon on the display
illuminates to indicate that one or more alarm messages are present.
Press the menu key, scroll through it with the + key and confirm the selection of ALL with the menu key. The
alarm code will appear; scroll with the + key to check for any other recorded alarms.
Therefore, if there are no alarms present the ALL menu will not be available.
Table 4: alarms
Display message
Alarm description
Alarm reset
ALL FlL : filter working hours (P22)
exceeded
Display the alarm and press the menu
key for 3”
ALL Air: internal air sensor failure
Automatic when failure is eliminated
ALL Prb: no internal or external air sensor
connected
Automatic when failure is eliminated
Curr max: fan maximum current threshold
(P36) exceeded
Display the alarm and press the menu
key
Curr min: fan minimum current threshold
(P35) not reached
Display the alarm and press the menu
key
Parameter setup menu
The parameter setup menu is divided into two levels. The first level is protected against accidental access
and modification, while the second level is protected by a password.
To access the first level parameter menu, press the menu key, use the + key to scroll the menu and confirm
the PAr option by pressing the menu key for 5”. Parameter P01 will be displayed; the +/− keys can be used
to scroll from parameter P01 to parameter P10.
Select the parameter to be modified and confirm the selection with the menu key. The parameter flashes.
Modify it with the +/− keys and confirm/save the change with the menu key. Press the ESC (ON−OFF) key
twice in succession to return to the display's home screen.
The second level parameter menu is only for the use of the authorised technical service, and is protected by
a password.
Press the menu key, use the + key to scroll the menu and confirm the PAr option by pressing the menu key
for 5”. Parameter P01 will be displayed. Press the − (menu) key to display P2LE on the display. Confirm the
selection with the menu key and enter the password using the +/− keys. Once the password has been
entered, confirm it with the menu key to access the list of parameters P11..... P52.
Scroll through the parameters with the +/− keys, select the parameter to be modified and confirm the
selection with the menu key. The parameter now flashes. Modify it with the +/− keys and confirm/save the
change with the menu key. Press the ESC (ON−OFF) key twice in succession to return to the display's home
screen.
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
LEVEL PARAMETERS
Table 5: 1st level parameters
Parameter
Function
Default setting
Possible settings
P01
TlME PROGRAMMlNG
0 = off
0 = off
1 = on
PtaB
PRESET PARAMETER SETUP
0
0….10
P03
NEUTRAL ZONE
4˚C
0….10˚C
P04
SYSTEM TYPE
0 = 2 pipes
0 = 2 pipes
1 = 4 pipes
2 = fan only
P05
FAN
1 = continuous
0= thermostat
1 = continuous
P06
OUTPUT TYPE
0 = ON−OFF
0 = ON−OFF valves
1 = wax solenoid valve with
temperature algorithm
2 = floating 2 pipes
P07
ELECTRlC HEATER
0 = none
0 = none
1 = replacement
2 = additional
3 = additional EH with SM<P16
P08
WATER PROBE
0 = no probe
0 = no probe
1 = SUM/WlN mode switching
2 = fan enabling
3 = SUM/WlN mode switching +
fan enabling
P09
SUMMER / WlNTER
1 = manual
0 = centralised / SM water probe
1 = manual from keyboard
2 = in response to room
temperature
3 = room temperature + water
NTC
P10
ECONOMY SETPOlNT DELTA
2˚C
1….10˚C
P2LE
ACCESS TO SECOND LEVEL
PARAMETERS
0
123
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Table 6: 2nd level parameters
Parameter
Function
Default setting
Possible settings
P11
PROPORTlONAL BAND
2˚C
1.0….5.0˚C
P12
RH CONTROL MODE
0 = display only
0 = display only
1 = humidification
2 = dehumidification
3 = COOL + RH
P13
RH. PROPOR. BAND
5%
5….20%
P14
FULL RESET REG. TlME
6
0−200 (x 10”)
P15
AUXlLlARY OUTPUT
FUNCTlON
0 = electric heater
0 = electric heater
1 = humidifier/dehumidifier
2 = gate valve operation
3 = control of lights
P16
WlNTER ON
35.0˚C
20.0….50.0˚C
P17
SUMMER ON
15.0˚C
5.0….25.0˚C
P18
WlNTER FAN ON
35.0˚C
20.0….50.0˚C
P19
SUMMER FAN ON
15.0˚C
5.0….25.0˚C
P20
ANTlFREEZE ˚C
4.0˚C
0.0….10.0˚C
P21
FLOATlNG ACTUATOR
STROKE
150”
0….400”
P22
FlLTER FOULED
6 (x 300h)
0….20 (x 300h)
P23
SETPOlNT BOTTOM LlMlT
10.0˚C
10.0….30.0˚C
P24
SETPOlNT TOP LlMlT
30.0˚C
10.0….30.0˚C
P25
ROOM PROBE OFFSET
0.0˚C
−5.0….+5.0˚C
P26
HUMlDlTY PROBE OFFSET
0%
−20%....+20%
P27
FAN START DELAY lN
HEATlNG MODE
0”
0….250”
P28
FAN START DELAY WlTH
ELECTRlC HEATER
60”
10….600”
P29
FAN STOP DELAY
WlTH ELECTRlC HEATER
120”
10….600”
P30
WlNDOW CONTACT
0 = contact closed
0 = contact closed = window
open 1 = contact open =
P31
ECONOMY CONTACT
0 = contact open
0 = contact open = room
occupied 1 = contact closed =
window occupied
P32
AUXlLlARY CONTACT
1 = contact closed
0 = contact open = input active
1 = contact closed = input
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
Table 6: 2nd level parameters
Parameter
Function
Default setting
Possible settings
P33
AUXlLlARY DlGlTAL lNPUT
0 = fan TM thermostat
0 = fan TM thermostat
1 = bathroom alarm
2 = smoke alarm
P34
lNPUT CONFlGURATlON
0 = configuration 0
0 = configuration 0
1 = configuration 1
2 = configuration 2
3 = configuration 3
P35
MlNlMUM CURRENT THRESHOLD
0 = control function off
0….50 (mA x 10)
P36
MAXlMUM CURRENT THRESHOLD
0 = control function off
0….200 (mA x 10)
P37
SENSOR TYPE
0 = NTC 10K
0 = NTC 10K
1 = NTC 20K
P38
AlR SETPOlNT
20.0˚C
10….30˚C
P39
MEASURlNG SCALE ˚C/˚F
0 = ˚C
0 = ˚C
1 = ˚F
P40
BOX BACKLlGHT MlNlMUM LlGHT lN
STANDBY MODE
0 = off
0….5
P41
LCD BACKLlGHT MlNlMUM LlGHT lN
STANDBY MODE
0= off
0….5
P42
MODBUS NETWORK ADDRESS
1
0….255 (0 = broadcast)
P43
ON−OFF VALVE HYSTERESlS (%)
5%
2….100%
P44
VALVE OPENlNG TlME lN HP MODE
5’
1….100’
P45
VALVE OPENlNG PERlODlC CYCLE
lN HP MODE
60’
1….999’
P46
WlNTER SETPOlNT WlTH SETUP 3
(HOTEL MODE)
18.0˚C
5.0˚C….30˚C
P47
SUMMER SETPOlNT WlTH SETUP 3
(HOTEL MODE)
27.0˚C
5.0˚C….30˚C
P48
HUMlDlTY (RH) SETPOlNT
50
0….100%
P49
MODULATlNG VALVE
MlNlMUM LlMlT
0%
0.…50%
P50
MODULATlNG VALVE MAXlMUM
LlMlT
100%
50%....100%
P51
FAN MODULATlNG VALVE
MlNlMUM LlMlT
0%
0.…50%
P52
FAN MODULATlNG VALVE
MAXlMUM LlMlT
100%
50%....100%
P53
ENABLING FAN
SETTING SPEED MANUAL
1
0 = OFF
1 = ON
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07.16 207674 Rev100
ELECTRICAL CONNECTION DIAGRAM, 12 POLE TERMINAL BOARD:
Key:
LC = microprocessor controller
TK1−TK2−TK3= fan control triac max. 1A 230Vac
TK4−TK5−TK6 = solenoid valve + heater control triac max. 0.1A 230Vac VF = floating valve
VF = floating valve
VC = cooling valve
VH = heating valve (heating and cooling for 2 pipe system)
R = auxiliary output / heater
M = fan 230Vac
SA = external air probe
SM = water output probe
TM = minimum temperature
DM = brushless fan modulating output 0/10V
Com
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07.16 207674 Rev100
iDigit CONTROL
Digital thermostat for fan coil units
ELECTRICAL CONNECTIONS TO RJ45 CONNECTOR:
Key:
CW = window contact
EC = economy contact
DMC = cooling valve modulating output 0/10V
DMH = heating valve modulating output 0/10V
CN1 = auxiliary contact input (P32)
CN2 = alarm auxiliary output
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07.16 207674 Rev100
HIPLUS AIRE
ACONDICIONADO S.L.
Masia Torrents, 2
Tel. +34 93 893 49 12
Fax. +34 93 893 96 15
08800 Vilanova i la Geltrú
Barcelona, Spain
www.hitecsa.com
Rights reserved subject to change without notice.
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