Controlli DG501C User manual

1st Issue 09/05 1DMP026E
ISO9000
CONTROLLI
16010 SANT’OLCESE Genova –Italy
Tel. [phone]
Fax [phone]
E-mail [email protected] Web www.controlli.org
User Guide
DG501C
EUROPEAN COMMUNITY DIRECTIVES
This equipment meets all requirements of European Community Directives for Low Voltage
(72/23/EEC), General Safety (92/59/EEC), and Electromagnetic Compatibility (89/336/EEC).

1st Issue 09/05 2DMP026E
INTRODUCTION........................................................................................................................... 3
START-UP ...................................................................................................................................... 3
INSTALLATION............................................................................................................................ 4
PRODUCT DESCRIPTION.................................................................................................................. 4
INSPECTION ................................................................................................................................... 4
REQUIREMENTS ............................................................................................................................. 4
PRECAUTIONS ................................................................................................................................ 5
General Precautions.................................................................................................................. 5
Static Precautions...................................................................................................................... 5
European Community Directives................................................................................................ 5
Communication Network Wiring Precautions............................................................................. 5
Digital Output Precautions........................................................................................................ 5
Power Supply Wiring Precautions.............................................................................................. 5
Location.................................................................................................................................... 5
WALL OR DIN RAIL MOUNTING ...................................................................................................... 6
Mounting Methods..................................................................................................................... 6
LCD PANEL MOUNTING USING DG510 KIT .................................................................................... 7
COMMUNICATION ONLY FOR NETWORKS WITH MORE THAN ONE CONTROLLER.................................. 7
ADDRESSING ................................................................................................................................. 8
WIRING ......................................................................................................................................... 8
DG500 Terminal Connections.................................................................................................... 9
I/O Wiring................................................................................................................................. 9
Power Supply Wiring............................................................................................................... 12
Power Wiring .......................................................................................................................... 12
PANEL MOUNT CONTROLLER/LCD WIRING (KIT DG510).............................................................. 13
INSTALLATION CHECKLIST ........................................................................................................... 13
DG501C APPLICATIONS ........................................................................................................... 14
LCD DISPLAY ............................................................................................................................. 20
LCD DISPLAY ............................................................................................................................. 21
LCD DISPLAY ............................................................................................................................. 22
LCD DISPLAY ............................................................................................................................. 23
MENU OPTIONS DESCRIPTION .............................................................................................. 23
Sat.+ Amb. 1-5........................................................................................................................ 24
Amb.+ PreR. 6-7..................................................................................................................... 25
Heat Loop ............................................................................................................................... 27
Cool Loop ............................................................................................................................... 27
Preheat. Loop.......................................................................................................................... 27
Fan Coil.................................................................................................................................. 28
Heating Loop........................................................................................................................... 29
Cooling Loop........................................................................................................................... 30
Manual Override ..................................................................................................................... 31
Manual Shutdown .................................................................................................................... 31
Holidays.................................................................................................................................. 31

1st Issue 09/05 3DMP026E
Introduction
The DG501C controller
•allows the complete automatic control and management of the air-conditioning plant
type chosen among the various applications (see, further for a list) configured and
existing in the controller. In order to enable the required application, it is sufficient to
carry out the controller electrical connections according to the relevant scheme and to
follow the instructions in the present manual.
•once the controller has been installed and connected, it is started up by simply switching
on power supply. No configuration intervention on the part of the user is needed. The
only necessary operations, to be carried out from the display, are to set time and time
schedules. In any case, it will be possible, using the display, to supervise and correct the
origin values of the variables.
Consider that:
•no particular instrument, even the PC, is required to install and use DG500.
•all operations are carried out through the display in a simple and user-friendly
way.
Start-up
Once the application type, from 1 to 9, has been chosen, and the relevant connections have
been carried out, stick the label (supplied in the package) which identifies the scheme
number. This has the purpose to make it evident for future interventions on the plant.
-Verify that the isolating strap, protecting the battery, has been removed, as described in
the paragraph LCD panel mounting at page 7
-Switch on power supply.
-After some moment, on the display the date and time appear. Press Esc.
-Using the navigation button, select the menu Set Clock, set the current date and time and
confirm using the Enter button.
-Press Esc. to go back to the start menu and verify the correct date and time are set.
At this time, if the pre-set parameters related to time programming (i.e. permanent operation)
and to the set value of the variables satisfy the plant requirements, the controller becomes
immediately operating.
In the frequent case a customised time and daily schedule is required, scroll the menu up to
the time to be modified (primary air or fan coil) and enter the required data using the
procedure described below.
Ex. 1 Programme: Monday to Friday, on 08, off 17. Saturday and Sunday off
On Off On Off
Monday, Tuesday,
Wednesday,
Thursday, Friday
08:00 17:00 17:00 17:00
Saturday, Sunday 00:00 00:00 00:00 00:00

1st Issue 09/05 4DMP026E
Ex. 2 Programme: Monday to Friday on 08, off 12, on 13,30 on 17, Saturday on 08, off 13,
Sunday off
On Off On Off
Monday, Tuesday,
Wednesday,
Thursday, Friday
08:00 12:00 13:30 17:00
Saturday 08:00 13:00 13.00 13.00
Sunday 00:00 00:00 00:00 00:00
In order to edit the set values of the required variables or, simply to monitor values of the
variables and sets, refer to the Menu description below.
Consider that the analogue inputs, which are not connected, are displayed as ------, the
digital ones are marked by Off.
Installation
Product Description
The DG500 Controller has a moulded polycarbonate base, protection class IP 40, and a LCD
screen for displaying and entering parameters. Its compact size allows easy inclusion in an
electrical enclosure.
Two Versions of the DG500 Controller are available:
•the wall mountable version (with or without DIN rail)
•the panel mountable version, using kit DG510
Inspection
Inspect carton for damage. If damaged, notify carrier immediately. Inspect controller for
damage. Return damaged products.
Requirements
(items not provided)
•Tools:
•Drill and bits for panel mounting screws.
•Digital Volt-Ohm-Meter (DVM.
•EN 60742 power transformer supplying a nominal 24Vac (20.4 to 30Vac) with a minimum
rating of 10VA, 50/60Hz. In case of more than one controller use a transformer supplying
10 VA x number of controllers.
•Three No. 10 self-starting screws for wall mounting or 35mm DIN rail for mounting.

1st Issue 09/05 5DMP026E
Precautions
WARNINGS –ELECTRICAL SHOCK HAZARD!
DISCONNECT POWER BEFORE INSTALLING OR REMOVING THE COVER.
General Precautions
•Follow Static precautions when installing this equipment.
•Use copper conductors that are suitable for 75°C.
•Make all connections according to electrical wiring diagram, national and local electrical
codes.
Static Precautions
Static charges damage electronic components. The microprocessor and associated circuitry
are extremely sensitive to static discharge. Use the following precautions when installing,
servicing, or operating the system:
•Work in a static-free area.
•Discharge static electricity by touching a known, securely grounded object.
•Use a wrist strap connected to earth ground when handling the controller’s printed
circuit board.
European Community Directives
This equipment meets all requirements of European Community Directives for Low Voltage
(72/23/EEC), General Safety (92/59/EEC), and Electromagnetic Compatibility (89/336/EEC).
Communication Network Wiring Precautions
•Use screened cables.
•If the cable is installed in areas of high RFI/EMI, the cable must be in conduit.
•Do not mix network wiring with other types of wiring (power, DO, AO, DI or UI).
Digital Output Precautions
•Do not mix DO wiring with other types of wiring (AO, DI or UI).
•Output terminals accept 1.5mm² wire. The selected wire gauge must be consistent with
load current.
Power Supply Wiring Precautions
•This product contains a non-isolated half-wave rectifier power supply and must not be
powered by transformers used to power other devices containing non-isolated full-wave
rectifier power supplies.
•Do not mix power wiring with communication networks, AO, UI or DI wiring.
•Use an EN 60742 power transformer supplying a nominal 24Vac (20.4 to 30Vac) with a
minimum rating of 10VA at 50/60Hz (controller only). The supply to transformer must
have a breaker or disconnect.
•The transformer frame must be grounded.
Location
DG500 controllers are suitable for indoor use only. When selecting a mounting location,
make certain the following conditions are met:
•Do not install where excessive moisture, corrosive fumes, vibration or explosive vapours
are present.
•Do not install near large contactors, electrical machinery or welding equipment.

1st Issue 09/05 6DMP026E
•Allow 150mm clearance from contactors, switches and associated cabling.
Locate where ambient temperatures do not exceed 50°C or fall below 0°C and relative
humidity does not exceed 95% or fall below 5%, non-condensing.
Wall or DIN rail mounting
1. Select mounting location. Allow minimum 50mm clearance around controller.
2. Do the following to mount controller on a panel without DIN rail:
a. Loosen two screws securing terminal cover and remove cover.
b. Lift wall mounting bracket clip (located on top back of controller).
c. Using a No. 10 self-starting screw, install top screw.
d. Level controller.
e. Using two No. 10 self-starting screws, install bottom screws.
f. Re-install the terminal cover. (May be left off until wiring is completed.)
3. Do the following to mount controller on a DIN rail:
a. While pulling down on DIN rail locking bracket, snap controller base on a 35mm DIN
mounting rail.
b. Release DIN rail locking bracket.
Mounting Methods
Panel mounting DIN rail mounting

1st Issue 09/05 7DMP026E
LCD Panel Mounting using DG510 Kit
Communication only for networks with more than one
controller
DG500 can operate as a stand-alone device or on larger installations connected to a NCP
communication network.

1st Issue 09/05 8DMP026E
Addressing
The default address for a standalone DG500 Controller is “Subnet 1 Node 2”, i.e. switch 2 set
to ON.
Each DG500 Controller has a unique address for communicating with a PC or modem.
a) Ensure the controller is not powered up.
b) Set switches 1 to 7 to the appropriate ON/OFF position to enable the binary address.
c) Power up the controller.
Example: to configure address 37: set switches 1, 3 and 6 to ON and the other switches to
OFF position.
Wiring
The following electrical connections can be made to DG500 controllers:
•NCP connection to a MicroNet NCP Interface (MNN-MI-100) and other NCP type
DG50XX controllers
•I/O connections, including:
•Ten configurable Universal Inputs (UIs)
•Two digital inputs
•Six digital outputs (Line Relay)
•Four analogue outputs (0 to 10V)
•24 Vac nominal EN 60742 power source and earth ground power connection.

1st Issue 09/05 9DMP026E
DG500 Terminal Connections
I/O Wiring
I/O connections include 10 configurable universal inputs (UIs), 2 digital inputs (DI), 6 digital
outputs (Line relay), and 4 analogue outputs (AO). The DOs are line relays for switching up
to 230Vac, 5A loads. Four analogue outputs provide 0 to 10V.
WARNINGS –ELECTRICAL SHOCK HAZARD!
DISCONNECT POWER FROM BOTH THE CONTROLLER AND DIGITAL
OUTPUTS BEFORE MAKING TERMINATIONS OR CHANGING
CONFIGURATION INPUT JUMPERS.
Voltage input
Note: An externally powered 0 to 10Vdc sensor (transmitter) is required. The input
impedance of a DG500 voltage input is 150 KΩ
1. Review Precautions section.
2. Connect positive signal wire from 0 to 10Vdc device to desired input terminal.
3. Connect negative signal wire to one common (0V) terminal
4. Make certain input configuration jumper is in Voltage position (Link C).

1st Issue 09/05 10 DMP026E
Resistive (NTC temperature sensors) Input
1. Review Precautions section.
2. Connect one wire from sensor or resistive device to desired input terminal. Polarity is not
important.
3. Connect other wire to one common (0V) terminal.
4. Make certain input configuration jumper is in Resistive position (Link A).
Digital inputs
Note: Only dry (voltage free) contacts can be monitored. Maximum count frequency is once
every two seconds.
1. Review Precautions section.
2. Connect one wire from field contact to desired input terminal. Polarity is not important.
3. Connect other wire to one common (0V) terminal.
4. Make certain input configuration jumper is in Digital position (Link B).
Digital Outputs (DO)
Note: Each load must be externally powered.
Relay outputs must control single-phase loads (only 24Vac or 230 Vac –110 VA)
otherwise, use external relays.
DOs 1 through 6 are Form A (N.O.) relay outputs for switching up to 230Vac, 5A loads only.
1. Review Precautions section.

1st Issue 09/05 11 DMP026E
2. Connect one wire from load to be switched to desired input terminal (43, 45, 47, 49, 51 or
53).
3. Connect other side of load to output terminal (44, 46, 48, 50, 52 or 54).
230Vac
Load Switch by Relay Output

1st Issue 09/05 12 DMP026E
Analogue Outputs (AO)
AOs, 1 through 4, supply from 0 to 10Vdc to modulate a voltage-controlled device, i.e. valve
and/or damper actuator applications.
•Minimum input impedance for a device or actuator operated by an AO is 10KΩ.
•The maximum current that a 0-10Vdc output can source is 1mA.
1. Review Precautions section.
2. Connect positive signal wire to desired output terminal (19, 20, 21 or 22).
3. Connect negative signal wire to one common (0V) terminal.
Power Supply Wiring
Note:
•This product contains a non-isolated half-wave rectifier power supply and must not be
powered by transformers used to power other devices containing non-isolated full-wave
rectifier power supplies.
•24Vac power wiring can be intermixed with DO wiring.
•Twisted or untwisted cable can be used for power wiring.
Power Wiring
1. Review Precautions section.
2. Ensure that the controller 0V terminal is connected to Earth before connecting the power
wiring to the controller.
3. Connect power ground wiring to terminal 1 (0V 24G).
4. Connect power 24Vac wiring to terminal 2 (24H).
Primary
24Vac
Secondary
EN 60742
Ground frame of
Transformer
connected to
Earth

1st Issue 09/05 13 DMP026E
Panel mount Controller/LCD Wiring (Kit DG510)
It consists of a separate LCD and Base Unit. The two units should be wired together in the
following manner.
Note: in the present scheme terminal 1 of DG510 is on the flat cable
side.
Installation Checklist
1. If controller is part of a NCP network, verify network wiring between controller and other
devices is effected according to job wiring diagram and national and local electrical
codes.
2. Verify 24Vac power is provided from a power transformer conforming to EN 60742 and
wiring is carried out according to job wiring diagrams and with national and local
electrical codes.
3. Verify input jumpers are in correct position.
4. Verify outputs are wired according to job wiring diagram and with national and local
electrical codes.
5. Make certain current requirements of the controlled device do not exceed rating of
controller digital outputs.

1st Issue 09/05 14 DMP026E
DG501C APPLICATIONS
T1
U2
T2
B1 B2
Damper
U1
Anti
frost
Pressure
switch
1: Primary air. 2 coils (heating, cooling), humidification. Compensated or set point
adjustment of the dew point. On/Off humidifier, anti-frost thermostat.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited, in
order to have a “On” value; the others must be left free.
STE71L
DWEDUCTTEMP.(T2)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Conn ection
DG501CHVACSYSTEM1
ALI
INPUTOUTPUT
(°)OUTSIDETEMPERATURE(T1)
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V 10
AI2AI3
11 0V 0V 12
AI4
13 0V
AI5
0V 14
AI6
0V 15
AI7
0V 16
AI8
0V 17
AI9
0V 18
AI10 AO2
0V 19 20
AO1
21 0V 0V
AO3
22 0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
OUTPUTVALVE
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
ON/OFF FANOUTPUT
OUTPUT
DAMPERON/OFF
DIRTYFILTERSALERT
UF215/21 6
Y110
BD295
3POS.
SWITCH
MAN.(OFF)
MAN.(ON)
AUT.
230/24 Vca
F
POWERSUPPLY
230 Vca
N
SWITCH
MAIN
R R0R1
TR
N
IG
N0
F1
N1
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN

1st Issue 09/05 15 DMP026E
T1
U2
T2
B1
B2
Damper
U1
Anti
frost
T4
P1
V1
2: 1+ 2-pipe fan-coil water production. Compensated or set point control of hot water in winter;
compensated or set point control of cold water through external summer/winter switch.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited, in
order to have a “On” value; the others must be left free.
FC1
Pressure
switch
STE71L
DWEDUCTTEMP(T2)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Connection
DG501CHVACSYSTEM2
ALI
INPUTOUTPUT
L1 L2 V+YM
(°)OUTSIDETEMPERATURE(T1)
STC71L
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V 10
AI2AI3
11 0V 0V 12
AI4
13 0V
AI5
0V 14
AI6
0V 15
AI7
0V 16
AI8
0V 17
AI9
0V 18
AI10 AO2
0V 19 20
AO1
21 0V 0V
AO3
22 0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
OUTPUTVALVE
CIRCUIT-FC1
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
OUTPUTVALVE
SUMMER/WINTERSWITCH
TEMP.FC1CIRCUIT(T4)
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
OUTPUT
ON/OFF FAN
OUTPUT
DAMPERON/OFF
DIRTYFILTERSALERT
ON/OFF PUMPOUTPUT(P1)
UF215/216
Y110
BD295
SUM/WINSWITCH CONTACTOPEN=WINTERLOGICFUNCTION
3POS.
SWITCH
MAN.(OFF)
MAN.(ON)
AUT.
230/24 Vca
F
POWERSUPPLY
230 Vca
N
SWITCH
MAIN
R R0R1
TR
N
IG
N0
F1
N1
IMMERISONTEMP.SENSOR
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION

1st Issue 09/05 16 DMP026E
T1
U2
T2
B1 B2
Damper U1
Anti
frost
T4 T5
P2P1
V2V1
3: 1+ 4-pipe fan-coil water production. Compensated or set point control of hot
water in winter; compensated or set point control of cold water.
The inputs marked by ° are optional. The stroke end, if not used, must be short-
circuited, in order to have a “On” value; the others must be left free.
FC1 FC2
Pressure
switch
FN
230 Vca
POWERSUPPLY
N0 R0R
SWITCH
MAIN
N
IG
R1
F1
N1
230/24 Vca
TR
STE71L
DWEDUCTTEMP.(T2)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Connectio n
DG501CHVACSYSTEM3
ALI
INPUTOUTPUT
L1 L2 V+YM
(°)OUTSIDETEMPERATURE(T1)
STC71L
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V
10
AI2AI3
11
0V 0V
12
AI4
13
0V
AI5
0V
14
AI6
0V
15
AI7
0V
16
AI8
0V
17
AI9
0V
18
AI10 AO2
0V
19 20
AO1
21
0V 0V
AO3
22
0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
Y L1 L2 V+M
CIRCUIT-FC1
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
CIRCUIT-FC2
SENSORFC1CIRCUIT(T4)
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
OUTPUT
ON/OFF FAN
OUTPUT
DAMPERON/FF
DIRTYFILTERSALERT
ON/OFF PUMP
OUTPUT(P1)
ON/OFF PUMP
OUTPUT(P2)
STC71L
UF215/216
Y110 BD295
3POS.
SWITCH
MAN.(ON)
AUT.
MAN.(OFF)
OUTPUTVALVE OUTPUTVALVE OUTPUTVALVE
IMMERSIONTEMPERATURE
SENSORFC2CIRCUIT(T5)
IMMERSIONTEMPERATURE
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION

1st Issue 09/05 17 DMP026E
T1
U2
T2
B1 B2
Damper U1
Anti
frost
4: Primary air. 3 coils (heating,cooling, post-heating) humidification. Compensated or set
point control of dew point and supply temperature. On/Off humidifier, anti-frost
thermostat.
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited,
in order to have a “On” value; the others must be left free.
Pressure
switch
B3 T3
FN
POWERSUPPLY
230 VcaN0
R0R
SWITCH
MAIN
N
IG
R1
F1
N1
230/24 Vca
TR
STE71L
DWEDUCTTEMP.(T2)
ROOM/DUCTTEMP.
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Co nnection
DG501CHVACSYSTEM4
ALI
INPUTOUTPUT
(°)OUTSIDETEMPERATURE(T1)
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V
10
AI2AI3
11
0V 0V
12
AI4
13
0V
AI5
0V
14
AI6
0V
15
AI7
0V
16
AI8
0V
17
AI9
0V
18
AI10 AO2
0V
19 20
AO1
21
0V 0V
AO3
22
0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
Y L1 L2 V+M
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
OUTPUTVALVE
POST-HEATINGCOIL
OUTPUTVALVE
(B3)
STA71L
STD71L
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
OUTPUT
ON/OFF FAN
OUTPUT
DAMPERON/OFF
DIRTYFILTERSALERT
UF215/216
Y110
BD295
POST-HEATING(T3)
3POS.
SWITCH
MAN.(ON)
AUT.
MAN.(OFF)
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPE N
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION

1st Issue 09/05 18 DMP026E
T
1
U2
T2
B1 B2
Damper U1
Anti
frost
Pressure
switch
B3 T3
T4
P1
V1
FC1
5: 4 + 2-pipe fan-coil water production. Compensated or set point control of hot
water in winter; compensated or set point control of cold water through external
summer/winter switch.
The inputs marked by ° are optional. The stroke end, if not used, must be short-
circuited, in order to have a “On” value; the others must be left free.
FN
POWERSUPPLY
230 VcaN0
R0R
SWITCH
MAIN
N
IG
R1
F1
N1
230/24 Vca
TR
STE71L
DWEDUCTTEMP.(T2)
POST-HEATING(T3)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Connection
DG501CHVACSYSTEM5
ALI
INPUTOUTPUT
L1 L2 V+YM
(°)OUTSIDETEMPERATURE(T1)
STC71L
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V 10
AI2AI3
11 0V 0V 12
AI4
13 0V
AI5
0V 14
AI6
0V 15
AI7
0V 16
AI8
0V 17
AI9
0V 18
AI10 AO2
0V 19 20
AO1
21 0V 0V
AO3
22 0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
Y L1 L2 V+M
OUTPUTVALVE
CIRCUIT-FC1
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
OUTPUTVALVE
POST-HEATINGCOIL
OUTPUTVALVE
(B3)
SUMMER/WINTERSWITCH
IMMERSIONTEMP.SENSOR
STA71L
STD71L
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
OUTPUT
ON/OFF FAN
OUTPUT
DAMPERON/OFF
DIRTYFILTERSALERT
ON/OFF PUMP
OUTPUT(P1)
UF215/216
Y110
BD295
CONTACTOPEN=SUM./WIN.SW.WINTERACTION
-RESP ECTTHECONTROLLERAND ACTUATORPHASES A S PERCONN ECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION
3POS.
SWITCH
MAN.(ON)
AUT.
MAN.(OFF)
ROOM/DUCTTEMP.
FC1CIRCUIT(T4)
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN

1st Issue 09/05 19 DMP026E
T1
U2
T2
B1 B2 Damper
U1
Anti
frost
Pressure
switch
6: AHU outside air. Heating, cooling, humidification. Compensated or set point control of
room temperature. Supply limit. On/Off humidifier. Anti-frost thermostat. Room
temperature manual control (optional).
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited,
in order to have a “On” value; the others must be left free.
T3
FN
POWERSUPPLY
230 VacN0
R0R
SWITCH
MAIN
N
IG
R1
F1
N1
230/24 Vca
TR
STE71L
DUCTSUPPLY
TEMPERATURELIMIT(T2)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Connection
DG501CHVACSYSTEM6
ALI
INPUTOUTPUT
(°)OUTSIDETEMPERATURE(T1)
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V
10
AI2AI3
11
0V 0V
12
AI4
13
0V
AI5
0V
14
AI6
0V
15
AI7
0V
16
AI8
0V
17
AI9
0V
18
AI10 AO2
0V
19 20
AO1
21
0V 0V
AO3
22
0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH ROOM/DUCT(U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
OUTPUTVALVE
HEATINGCOIL
(B1)
STD71L
HUMIDIFIERON/OFF
OUTPUT(U1)
ON/OFF FANOUTPUT
OUTPUT
DAMPERON/OFF
DIRTYFILTERSALERT
ROOMTEMPERATURE(T3)
(°)MANUALSET-POINT
STD71L
STA71L
C
C
A
B
STA75L
AB
RM55L
B
UF215/216
Y110
BD295
ROOMTEMPERATURE
OUTPUTVALVE
COOLINGCOIL
(B2)
COMM.
3POS.
MAN.(ON)
AUT.
MAN.(OFF)
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION

1st Issue 09/05 20 DMP026E
7: AHU outside air. Pre-heating, heating, cooling, humidification.Compensated or set
point control of pre-heating and room temperature. On/Off humidifier. Anti-frost
thermostat. Room temperature manual control (optional).
The inputs marked by ° are optional. The stroke end, if not used, must be short-circuited,
in order to have a “On” value; the others must be left free.
T1
U2
T2
B3 B2
Damper U1
Anti
frost
Pressure
switch
T3
B1
FN
POWERSUPPLY
N0 R0R
SWITCH
MAIN
N
IG
R1
F1
N1
230/24 Vca
TR
STE71L
DUCTTEMPERATURE
PRE-HEATING(T2)
(°)DAMPERSTATUS
YMV+ L2 L1 YMV+ L2 L1
Ground Connection
DG501CHVACSYSTEM7
ALI
INPUTOUTPUT
(°)OUTSIDETEMPERATURE(T1)
1 2 7
0V
DI1
8
0V
DI2
9
0V
AI1
0V
10
AI2AI3
11
0V 0V
12
AI4
13
0V
AI5
0V
14
AI6
0V
15
AI7
0V
16
AI8
0V
17
AI9
0V
18
AI10 AO2
0V
19 20
AO1
21
0V 0V
AO3
22
0V
AO4DO2
44 43 45
DO1
47 46 48
DO3
50 49
DO4DO6
52 51 53
DO5
54
HUMIDITYSWITCH (U2)
ANTIFROSTTHERMOSTAT
(°)DIFFERENTIALPRESSURESWITCH
Y L1 L2 V+M
OUTPUTVALVE
HEATINGCOIL
(B1)
COOLINGCOIL
(B2)
OUTPUTVALVE
PRE-HEATINGCOIL
OUTPUTVALVE
(B3)
STD71L
ROOMTEMPERATURE
MANUALSET-POINT
(T3)
STD71L
STA71L
C
C
A
B
STA75L
AB
RM55L
B
UF215/216
Y110
BD295
230 Vac
ROOMTEMPERATURE
3POS.
SWITCH
MAN.(ON)
MAN.(OFF)
AUT.
DIRTYFILTERSALERT
DAMPERON/OFF
ON/OFF FANOUTPUT
HUMIDIFIERON/OFF
OUTPUT(U1)
OUTPUT
PRESSURESW.
THERMOSTAT
DAMPER
HUMIDITYSW.CONTACTOPEN=UR%MEASURED>SETPOINT
CONTACTCLOSE =DIRTYFILTERSALARM
CONTACTOPEN=ANTIFROSTALARM
CONTACTCLOSE =DAMPEROPEN
-OBSERVE THECONTROLLERSAND ACTUATORSPHASES AS PERCONNECTIONDRAWING
WARNING:
-(°)=OPTIONALFUNCTION