Transcript
Digital thermostat for fan coil units
07.16 207674 Rev100
USER MANUAL
iDigit CONTROL
WPHA/WPHBA SELF CONTAINED HORIZONTAL AIRCONDITIONERS
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iDigit CONTROL Digital thermostat for fan coil units
iDigit Control
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
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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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iDigit CONTROL Digital thermostat for fan coil units
THERMOSTAT OPERATION: The user controls the unit by means of four keys beside the display: Key
−
button
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
(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:
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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:
= Minimum speed set (33% for brushless electronic fans) = 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. = Cooling function
= Heating function = Fan only function
Confirm the setting required by pressing the menu key. WARNlNG: if automatic/centralised operating mode change has been selected (P09) the
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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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iDigit CONTROL Digital thermostat for fan coil units
Table 3: example of weekly time program set in table 2
Day
The icon on the display
F1 Time
F1 Setpoint
F2 Time
F2 Setpoint
illuminates to indicate that the thermostat is performing a daily program
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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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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
PtaB
PRESET PARAMETER SETUP
0
0….10
P03
NEUTRAL ZONE
4˚C
0….10˚C
P04
SYSTEM TYPE
0 = 2 pipes
0 = off 1 = on
0 = 2 pipes 1 = 4 pipes 2 = fan only P05
FAN
1 = continuous
0= thermostat 1 = continuous 0 = ON−OFF valves
P06
OUTPUT TYPE
0 = ON−OFF
1 = wax solenoid valve with temperature algorithm 2 = floating 2 pipes 0 = none 1 = replacement
P07
ELECTRlC HEATER
0 = none
2 = additional 3 = additional EH with SM
