Evco EV3H94 User manual

EVCOS.p.A.|EV3H94|Instructionsheetver.1.0|Code1043H94E104|Page1of5|PT05/21
EV3H94 Controller for DHW heat pump heaters
EN ENGLISH
- power supply 115... 230 VAC
- DHW tank upper and lower probe, evaporator probe (PTC/NTC/Pt 1000)
- photovoltaic, HP and multi-purpose digital input (see i0)
- compressor relay 16 A res. @ 250 VAC
- alarm buzzer
- TTL MODBUS slave port for EVconnect app, EPoCA remote monitoring system or for
BMS.
1MEASUREMENTS AND INSTALLATION
Measurements in mm (inches). To be fitted to a panel, snap-in brackets provided.
INSTALLATION PRECAUTIONS
- the thickness of the panel must be between 0.8 and 2.0 mm (1/32 and 1/16 in);
- ensure that the working conditions are within the limits stated in the TECHNICAL
SPECIFICATIONS section;
- do not install the device close to heat sources, equipment with a strong magnetic field,
in places subject to direct sunlight, rain, damp, excessive dust, mechanical vibrations
or shocks;
- in compliance with safety regulations, the device must be installed properly to ensure
adequate protection from contact with electrical parts. All protective parts must be
fixed in such a way as to need the aid of a tool to remove them.
2ELECTRICAL CONNECTION
N.B.
- use cables of an adequate section for the current running through them.
- to reduce any electromagnetic interference locate the power cables as far away as
possible from the signal cables.
PRECAUTIONS FOR ELECTRICAL CONNECTION
- if using an electrical or pneumatic screwdriver, adjust the tightening torque;
- if the device is moved from a cold to a warm place, humidity may cause condensation
to form inside. Wait for about an hour before switching on the power;
- make sure that the supply voltage, electrical frequency and power are within the set
limits. See the section TECHNICAL SPECIFICATIONS;
- disconnect the power supply before carrying out any type of maintenance;
- do not use the device as a safety device;
- for repairs and for further information, contact the EVCO sales network.
3FIRST-TIME USE
1. Carry out the installation following the instructions given in the section MEASUREMENTS
AND INSTALLATION.
2. Power up the device as set out in the section ELECTRICAL CONNECTION: an internal
test will start up.
The test normally takes a few seconds; when it is finished the display will switch off.
3. Configure the device as shown in the section Setting configuration parameters.
Recommended configuration parameters for first-time use:
PAR. DEF. PARAMETER MIN... MAX.
SP1 55.0 setpoint in economy mode r3... r4
SP2 65.0 setpoint in comfort mode r1... r2
P0
1 type of probe 0 = PTC 1 = NTC 2 = Pt 1000
P2 0 temperature measurement unit 0 = °C 1 = °F
P3 1 enabled probes 0 = DHW tank upper probe + high
pressure input
1 = DHW tank upper and lower
probe
d1 2 type of defrost 0 = electric 1 = hot gas
2 = compressor stopped
3 = hot gas balancing the pressure
Then check that the remaining settings are appropriate; see the section CONFIGURA-
TION PARAMETERS.
4. Disconnect the device from the mains.
5. Make the electrical connection as shown in the section ELECTRICAL CONNECTION with-
out powering up the device.
6. For the connection in an RS-485 network connect the interface EVIF22TSX or
EVIF23TSX, to activate real time functions connect the module EVIF23TSX, to use the
device with the EPoCA remote monitoring system, connect the EVIF25TWX module, to
use the device with the APP EVconnect connect the interface EVIF25TBX; see the rele-
vant instruction sheets. If EVIF22TSX or EVIF23TSX is used, set parameter bLE
to 0.
7. Power up the device.
4 USER INTERFACE AND MAIN FUNCTIONS
4.1 Switching the device on/off
1. Touch the ON/STAND-BY key for 4 s.
If the device is switched on, the display will show the P5 value ("DHW tank upper temperature"
default); if the display shows an alarm code, see the section ALARMS.
LED ON OFF FLASHING
compressor switched
on compressor switched off - compressor protection active - setpoint being set
defrost active
- -
fans switched on fans switched off -
HACCP
alarm active
- -
compressor mainte- nance request - operation with EVconnect APP ac- tive
°C/°F
temperature display
- -
AUX heaters switched on
heaters switched off -
device switched off
device switched on -
When 30s have elapsed without the keys being pressed, the display will show the "Loc" label
and the keypad will lock automatically.
High
pressureswitch
electric

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4.2 Unlocking the keypad
Touch a key for 1 s: the display will show the label “UnL”.
4.3 Setting the setpoint Economy
Check that the keypad is not locked.
1. Touch the SET key: the display will show the label “SP1”.
2. Touch the SET key.
3. Touch the UP or DOWN keys within 15s to set the value within
the limits r3 and r4 (default "40... 55”).
4. Touch the SET key (or take no action for 15s).
5. Touch the ON/STAND-BY key.
4.4 Setting the Comfort setpoint
Check that the keypad is not locked.
1. Touch the SET key: the display will show the label “SP1”.
2. Touch the UP or DOWN key to select the label “SP2”.
3. Touch the SET key.
4. Touch the UP or DOWN keys within 15s to set the value within
the limits r1 and r2 (default "40... 70”).
5. Touch the SET key (or take no action for 15s).
6. Touch the ON/STAND-BY key.
4.5 Setting the overboost activation threshold
Check that the keypad is not locked.
1. Touch the SET key: the display will show the label “SP1”.
2. Touch the UP or DOWN key to select the label “SP3”.
3. Touch the SET key.
4. Touch the UP or DOWN keys within 15s to set the value within
the limits 10 and r2 (default “10... 70”).
5. Touch the SET key (or take no action for 15s).
6. Touch the ON/STAND-BY key.
4.6 Activating manual defrost
Check that the keypad isn’t locked and that the anti-legionella and overboost functions aren’t
active.
1. Touch the UP key for 4s.
If P4 = 1 or 2 (default), defrost is activated provided that the evaporator temperature is lower
than the d2 threshold.
4.7 Silencing the alarm buzzer (if u9 = 1)
Touch a key.
5 FUNCTIONS AND LOAD OPERATIONS
5.1 Economy
- compressor on if DHW tank lower temperature < “SP1 setpoint - r0 differential” and off
if DHW tank lower temperature > “SP1 setpoint”
- fans on if compressor on
- heaters switched off in normal operation (on if needed during defrost)
5.2 Comfort
- compressor on if DHW tank lower temperature < “SP5 setpoint - r0 differential” and off
if DHW tank lower temperature > “SP5 setpoint”
- fans on if compressor on
- heaters on, with a single probe configured (P3 = 0), if DHW tank upper temperature <
“SP2 - r6 threshold - r7 differential” and off if DHW tank upper temperature > “SP2 -
r6 threshold”.
- heaters on, with two probes configured (P3 = 1), if DHW tank upper temperature <
“SP2 – r0 differential” and off if DHW tank upper temperature > “SP2”.
5.3 Anti-legionella
It activates at “H0 intervals” or at “Ant time”, provided that DHW tank lower temperature >
“SP1 setpoint” and > “SP2 setpoint”
- compressor switched off
- fans switched off
- heaters switched on until DHW tank upper temperature > “H1 threshold” and then for
“H3 time”.
5.4 Overboost
It activates in manual mode, provided that DHW tank upper and lower temperature < “SP3
threshold”
- compressor, fans and heaters on until DHW tank upper temperature > “SP1 setpoint”.
5.5 Defrosting
It activates with evaporator temperature < “d17 threshold” for “d18 time” or in manual mode,
provided that the anti-legionella and overboost functions are not active
- compressor switched on if d1 = 1
- defrost relay active if d1 = 1 or 2
- fans switched on if d1 = 2
- heaters switched on to prevent too high temperature drop in the storage tank
5.6 Photovoltaic system
It activates with photovoltaic input active
- operation as in comfort mode, except for “SP2 setpoint” which becomes “SP6 setpoint”.
5.7 Green
It activates with multi-purpose input active and DHW tank upper and lower temperature > “SP8
setpoint”
- compressor switched off
- fans switched off
- heaters switched off.
5.8 Antifreeze
This function is used to prevent the water freezing. It is activated when tank upper tempera-
ture < “SP7 setpoint” – “r0 differential” and this function is deactivated when tank upper tem-
perature > “SP7 setpoint”
- heaters are switched on.
This function can be active only if the controller is in stand-by.
5.9 Pre opening hot gas defrost valve
This function is used to balance the pressure at the compressor start-up, and it is activated on-
ly if “d1” = 3.
This function switch on the defrost output “i11” seconds before the start-up of the compressor,
this occurs every time the compressor started, even if there is no defrost request.
5.10 Fan operation
The fan operates depending on the active function, normally C12 second before the switch on
of the compressor. There are some exceptions:
- defrost: in case of hot gas (d1=1) compressor is active but fan is off. In case of com-
pressor stop (d1=2) compressor is off but fan is active
- alarms: in case of LHP compressor is off but fan is active.
6 ADDITIONAL FUNCTIONS
6.1 Activating/deactivating comfort operation in manual mode
Check that the keypad is not locked.
1. Touch the DOWN key for 1 s: the display will show a code.
2. Touch the UP or DOWN key within 15s to select a label.
COD. DESCRIPTION
Auto activates comfort operation
ECO deactivates comfort operation
3. Touch the SET key.
4. Touch the ON/STAND-BY key (or take no action for 60s) to exit
the procedure.
6.1 Activating the overboost function
Check that the keypad isn’t locked.
1. Touch the DOWN key for 1 s: the display will show a code.
2. Touch the UP or DOWN key within 15s to select “ObS”.
3. Touch the SET key.
4. Touch the ON/STAND-BY key (or take no action for 60s) to exit
the procedure.
6.2 Displaying the operating mode
Check that the keypad is not locked.
1. Touch the DOWN key: the display will show a code.
COD. DESCRIPTION
ECO economy
ObS overboost
Auto comfort
Anti
anti-legionella; if flashing, DHW tank lower temperature > “SP1 setpoint” and > “SP2 setpoint”
dEFr defrost
in2 photovoltaic function
2. Touch the ON/STAND-BY key (or take no action for 60s) to exit
the procedure.
6.3 Displaying/deleting compressor functioning hours
Check that the keypad is not locked.
1. Touch the DOWN key for 1 s: the display will show a code.
2. Touch the UP or DOWN key within 15s to select a label.
COD. DESCRIPTION
CH display compressor working hours in hundreds
rCH delete compressor working hours
3. Touch the SET key.
4. Touch the UP or DOWN key to set “149” (to select rCH).
5. Touch the SET key.
6. Touch the ON/STAND-BY key (or take no action for 60s) to exit
the procedure.

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7 SETTINGS
7.1 Setting configuration parameters
1. Touch the SET key for 4 s: the display will show the label “PA”.
2. Touch the SET key.
3. Touch the UP or DOWN key within 15s to set -19”.
4. Touch the SET key (or take no action for 15s): the display will
show the label “SP”.
5. Touch the UP or DOWN key to select a parameter.
6. Touch the SET key.
7. Touch the UP or DOWN key within 15s to set the value.
8. Touch the SET key (or take no action for 15s).
9. Touch the SET key for 4s (or take no action for 60s) to exit the
procedure.
7.2 Set the date, time and day of the week (if module EVIF23TSX, EVIF25TWX or
interface EVIF25TBX is connected)
N.B.
- Do not disconnect the device from the mains within two minutes since the setting
of the time and day of the week.
- if the device communicates with the EVconnect app, the date, time and day of the
week will be automatically set by the smartphone or tablet.
Check that the keypad is not locked.
1. Touch the DOWN key for 4 s.
2. Touch the UP or DOWN key within 15 s to select the label “rtc”.
3. Touch the SET key: the display will show the label “yy” followed
by the last two figures of the year.
4. Touch the UP or DOWN key within 15 s to set the year.
5. Repeat actions 3. and 4. to set the next labels.
LAB. DESCRIPTION OF THE NUMBERS FOLLOWING THE LABEL
n month (01… 12)
d day (01… 31)
h time (00… 23)
n minute (00… 59)
6. Touch the SET key: the display will show the label for the day of
the week.
7. Touch the UP or DOWN key within 15 s to set the day of the
week.
LAB. DESCRIPTION
Mon Monday
tuE Tuesday
UEd Wednesday
thu Thursday
Fri Friday
Sat Saturday
Sun Sunday
8. Touch the SET key: the device will exit the procedure.
9. Touch the ON/STAND-BY key to exit the procedure beforehand.
7.3 Restoring factory settings (default)
N.B.
- check that the factory settings are appropriate; see the section CONFIGURATION
PARAMETERS.
1. Touch the SET key for 4 s: the display will show the label “PA”.
2. Touch the SET key.
3. Touch the UP or DOWN key within 15s to set “149”.
4. Touch the SET key (or take no action for 15s): the display will
show the label “dEF”.
5. Touch the SET key.
6. Touch the UP or DOWN key within 15s to set “1”.
7.
Touch the SET key (or take no action for 15 s): the display will
show “- - -” flashing for 4 s, after which the device will exit the
procedure.
8. Disconnect the device from the power supply.
9. Touch the SET key for 1s before action 6 to exit the procedure
beforehand.
8 CONFIGURATION PARAMETERS
No. PAR. DEF. SETPOINT MIN... MAX.
1 SP1 55.0 setpoint in economy mode r3... r4
2 SP2 65.0 setpoint in comfort mode r1... r2
3 SP3 45.0 overboost activation threshold 10 °C/°F... r2
4 SP5 55.0 heat pump switch-off threshold r1... SP2
5 SP6 75.0 photovoltaic system setpoint 40... 100 °C/°F
6 SP7 5.0 setpoint in antifreeze mode 0... 40 °C/°F
7 SP8 40.0 setpoint in green mode 0... 100 °C/°F
8 SP9 -7.0 cold evaporator alarm threshold -25... 25 °C/°F
9
SPA -25 evaporator failure alarm thresh- old -50... 25 °C/°F
No. PAR. DEF. ANALOGUE INPUTS MIN... MAX.
10 CA1 0.0 DHW tank upper probe offset -25... 25 °C/°F
11 CA2 0.0 DHW tank lower probe offset -25... 25 °C/°F
12 CA3 0.0 evaporator probe offset -25... 25 °C/°F
13
P0 1 type of probe 0 = PTC 1 = NTC 2 = Pt 1000
14 P1 1 enable decimal point °C 0 = no 1 = yes
15 P2 0 temperature measurement unit 0 = °C 1 = °F
16 P3 1 enabled probes 0 = DHW tank upper probe
+ high pressure input
1 = DHW tank upper and
lower probe
17 P4 2 evaporator probe function 0 = disabled (defrost every
d18 minutes)
1 = defrost activation and
defrost end
2 = defrost activation
18 P5 0 value displayed 0 = DHW tank upper tem-
perature
1 = setpoint in comfort
mode
2 = DHW tank lower tem-
perature
3 = evaporator temperature
19 P8 5 display refresh time 0... 250 s: 10
No. PAR. DEF. REGULATION MIN... MAX.
20 r0 3.0 setpoint differential 1... 30 °C/°F
21
r1 40.0 minimum setpoint in comfort mode 10 °C/°F... r2
22
r2 70.0 maximum setpoint in comfort mode r1... 100 °C/°F
23
r3 40.0 minimum setpoint in economy mode 10 °C/°F... r4
24
r4 55.0 maximum setpoint in economy mode r3... 100 °C/°F
25
r5 0 enable setpoint blocking in economy and comfort modes 0 = no 1 = yes
26 r6 15.0
heater threshold in comfort
mode 0... 50 °C/°F
27
r7 15.0 heater threshold differential in comfort mode 1... 30 °C/°F
No. PAR. DEF. COMPRESSOR MIN... MAX.
28
C0 5 compressor on delay from pow- er-on 0... 240 min
29
C1 5 minimum time between two power-ons of compressor 0... 240 min
30 C2 5 minimum compressor-off time 0... 240 min
31 C3 0 minimum compressor-on time 0... 240 s
32
C10 400 compressor hours for mainte- nance 0... 999 h x 100 0 = disabled
33
C11 120 interval for cold evaporator con- trol 0... 999 min
34
C12 60 compressor-on delay from fan on for cold evaporator control 0... 240 s
35
C13 20 compressor-on delay from green multi-purpose input reset 0... 240 min
36
C14 20 compressor-on consecutive time for evaporator failure control -1... 240 min -1 = disabled
No. PAR. DEF. DEFROST MIN... MAX.
37 d1 2 type of defrost 0 = electric
1 = hot gas
2 = compressor stopped
3 = hot gas balancing the
pressure
38 d2 3.0 defrost end threshold -50... 50 °C/°F
39 d3 30 defrost duration 0... 99 min
0 = defrost disabled
If P4 = 1, maximum duration
default 0 in map 3 of
EV3H94N9PXRX01 and
EV3H94N9VXRX01
40
d17 -2.0 evaporation threshold for defrost interval count -50... 50 °C/°F
41
d18 30 defrost interval 0... 240 min 0 = manual only

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No. PAR. DEF. ALARMS MIN... MAX.
42 A0 0 select value for low temper-
ature alarm
0 = DHW tank upper tempera-
ture
1 = DHW tank lower tempera-
ture
2 = evaporator temperature
43 A1 10.0
low temperature alarm
threshold 0... 50 °C/°F
44
A2 0 low temperature alarm type 0 = disabled 1 = absolute
45 A3 0 select value for high tem-
perature alarm
0 = DHW tank upper tempera-
ture
1 = DHW tank lower tempera-
ture
2 = evaporator temperature
46 A4 90.0 high temperature alarm
threshold
0... 199 °C/°F
default 75.0 in
EV3H94N9PXRX01 and
EV3H94N9VXRX01
47
A5 0 high temperature alarm type 0 = disabled 1 = absolute
48
A6 120 high temperature alarm de- lay from power-on 0... 240 min
49
A7 15 high/low temperature alarm delay 0... 240 min
50
A10 120 power failure duration for alarm recording 0... 240 min
51
A11 2.0 high/low temperature alarm reset differential 1... 30 °C/°F
No. PAR. DEF. FAN MIN... MAX.
52 F0 1 enable fan 0 = no 1 = yes
No. PAR. DEF. ANTI-LEGIONELLA MIN... MAX.
53
H0 30 anti-legionella interval 0... 99 d (days) 0 = none
54 H1 70.0
anti-legionella thermal
threshold 10... 199 °C/°F
55
H3 2
anti-legionella thermal
threshold maintenance dura-
tion
0... 240 min
0 = function disabled
No. PAR. DEF. DIGITAL INPUTS MIN... MAX.
56 i0 0 multi-purpose input function 0 = disabled
1 = pressure switch
2 = green
57
i2 0 compressor-on delay from pressure switch alarm reset 0... 120 min
58 i3 0 enable photovoltaic system 0 = no 1 = yes
59
i4 1 photovoltaic system input activation 0 = with contact closed 1 = with contact open
60
i5 1
high pressure input activa-
tion
0 = with contact closed
1 = with contact open
61
i8 3
number of pressure switch
alarms for unit blocked
alarm
0... 15
0 = disabled
62
i9 240 counter reset time for pres- sure switch alarms 1... 999 min
63
i10 24 pressure switch alarm delay from compressor-on 0... 240 sx10
64
i11 60 time pre opening hot gas defrost valve 0... 240 s
65 i12 0 fan off during pressure
switch/unit blocked alarm
0 = no 1 = yes
default 1 in
EV3H94N9PXRX01 and
EV3H94N9VXRX01
No. PAR. DEF. DIGITAL OUTPUTS MIN... MAX.
66
u0 1 enable relay K2 and relay K4 inversion 0 = no (defrost on K2) 1 = yes (defrost on K4)
67 u9 1 enable alarm buzzer 0 = no 1 = yes
N. PAR. DEF. CLOCK MIN... MAX.
68 Hr0 1 enable clock 0 = no 1 = yes
69
Hd1 1 time for switch on on Mon- day 1 = with On1 e OF1 2 = with On2 e OF2
70
Hd2 1 time for switch on on Tues- day 1 = with On1 e OF1 2 = with On2 e OF2
71
Hd3 1 time for switch on on Wednesday 1 = with On1 e OF1 2 = with On2 e OF2
72
Hd4 1 time for switch on on Thurs- day 1 = with On1 e OF1 2 = with On2 e OF2
73
Hd5 1 time for switch on on Friday 1 = with On1 e OF1 2 = with On2 e OF2
74
Hd6 2 time for switch on on Satur- day 1 = with On1 e OF1 2 = with On2 e OF2
75
Hd7 2 time for switch on on Sun- day 1 = with On1 e OF1 2 = with On2 e OF2
76
HOn1 - - - time for time band 1 on
00:00... 23:59 h:min
00:00 = disabled
77
HOF1 - - - time for time band 1 off 00:00... 23:59 h:min 00:00 = disabled
78
HOn2 - - - time for time band 2 on
00:00... 23:59 h:min
00:00 = disabled
79
HOF2 - - - time for time band 2 off 00:00... 23:59 h:min 00:00 = disabled
80
Ant - - - time antilegionella on
00:00... 23:59 h:min
00:00 = disabled
N. PAR. DEF. SAFETIES MIN... MAX.
81 PA1 426 level 1 password -99... 999
82 PA2 824 level 2 password -99... 999
N. PAR. DEF. DATA-LOGGING EVLINK MIN... MAX.
83
bLE 1 enable Bluetooth 0 = no 1 = sì >1 reserved
84
rE0 15 data-logger sampling inter- val 0... 240 min
85 rE1 1 recorded temperature 0 = nessuna
1 = DHW tank upper
2 = DHW tank lower
3 = evaporator
4 = DHW tank upper and lower
5 = tutte
N. PAR. DEF. MODBUS MIN... MAX.
86 LA 247 MODBUS address 1... 247
87 Lb 2
MODBUS baud rate
0 = 2.400 baud
1 = 4.800 baud
2 = 9.600 baud
3 = 19.200 baud
88
LP 2 parity
0 = none 1 = odd 2 = even
9 ALARMS
CODE
DESCRIPTION RESET TO CORRECT
Pr1
DHW tank upper probe alarm automatic - check P0
- check probe integrity
- check electrical connection Pr2
DHW tank lower probe alarm automatic
Pr3 evaporator probe alarm automatic
rtc clock alarm manual set date, time and day of the week
AL low temperature alarm automatic check A0, A1 and A2
AH high temperature alarm automatic check A3, A4 and A5
PF
power failure alarm manual - touch a key - check electrical connection
LHP
pressure switch/unit blocked alarm automatic/ manual - switch the device off and on - check i0, i8 and i9
HP
high pressure alarm manual - switch the device off and on - check P3
FiL compressor maintenance
alarm
automatic check C10
by silencing the buzzer you delete the
compressor functioning hours
UtL
evaporator failure alarm manual - switch the device off and on - check SPA and C14
10 TECHNICAL SPECIFICATIONS
Purpose of the control device function controller
Construction of the control device built-in electronic device
Container black, self-extinguishing.
Category of heat and fire resistance D.
Measurements
75.0 x 33.0 x 59.0 mm (2 15/16 x 1 5/16 x 2
5/16 in) with fixed screw terminal blocks 75.0 x 33.0 x 81.5 mm (2 15/16 x 1 5/16 x 3 3/16 in) with plug-in screw terminal blocks
Mounting methods for the control device
to be fitted to a panel, snap-in brackets pro- vided
Degree of protection provided by the covering IP65 (front)
Connection method
fixed screw terminal blocks for wires up to 2.5
mm² plug-in screw terminal blocks for wires up to 2.5 mm² (on request).
Maximum permitted length for connection cables
power supply: 10 m (32.8 ft) analogue inputs: 10 m (32.8 ft)
digital inputs: 10 m (32.8 ft) digital outputs: 10 m (32.8 ft).
Operating temperature From 0 to 55 °C (from 32 to 131 °F)
Storage temperature from -25 to 70 °C (from -13 to 158 °F)
Operating humidity
relative humidity without condensate from 10 to 90%
Pollution status of the control device 2.
Compliance:
RoHS 2011/65/EC
WEEE 2012/19/EU REACH (EC) Regulation no. 1907/2006
EMC 2014/30/EU LVD 2014/35/EU
Classification of the control device according
to protection from electrical shock class II according to standard EMC EN 60730-1 §2.7.5.
Power supply
115... 230 VAC (+10% -15%), 50/60 Hz (±3 Hz), max. 3.2 VA insulated
Earthing methods for the control device none
Rated impulse-withstand voltage 2.5 KV
Over-voltage category II.
Software class and structure A.
Analogue inputs
2 for PTC, NTC or Pt 1000 probes (DHW tank upper probe and evaporator probe)
PTC probes Sensor type: KTY 81-121 (990 @ 25 °C, 77 °F)
Measurement field: from -50 to 150 °C (from -58 to 302 °F)
Resolution: 0.1 °C (1 °F).
NTC probes Sensor type: ß3435 (10 K@ 25 °C, 77 °F)
Measurement field: from -40 to 105 °C (from -40 to 221 °F)
Resolution: 0.1 °C (1 °F).

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Pt 1000
probes
Measurement field:
from -100 to 650 °C (from -148 to 999 °F)
Resolution: 0.1 °C (1 °F).
Digital inputs
2 dry contact (photovoltaic and multi- purpose input)
Dry contact Contact type: 5 VDC, 1.5 mA
Power supply: none
Protection: none.
Other inputs
can be configured for analogue input (DHW tank lower probe) or for digital input (high pressure input)
Digital outputs
4 with electro-mechanical relay (compressor, defrost, fans and heaters)
Compressor relay (K1) SPST, 16 A res. @ 250 VAC
Relay K2 SPST, 8 A res. @ 250 VAC
Fan relay (K3) SPST, 5 A res. @ 250 VAC
Relay K4 SPST, 5 A res. @ 250 VAC
Type 1 or Type 2 Actions Type 1
Additional features of Type 1 or Type 2 ac-
tions C.
Displays custom display, 3 digit, with function icons
Alarm buzzer Built-in
Communication ports
1 TTL MODBUS slave port for EVconnect app, EPoCA remote monitoring system or for BMS
N.B.
The device must be disposed of according to local regulations governing the collection
of electrical and electronic equipment.
This document and the solutions contained therein are the intellectual property of EVCO and thus pro-
tected by the Italian Intellectual Property Rights Code (CPI). EVCO imposes an absolute ban on the full
or partial reproduction and disclosure of the content other than with the express approval of EVCO. The
customer (manufacturer, installer or end-user) assumes all responsibility for the configuration of the de-
vice.
EVCO accepts no liability for any possible errors in this document and reserves the right to make any
changes, at any time without prejudice to the essential functional and safety features of the equipment.
EVCO S.p.A.
Via Feltre 81, 32036 Sedico (BL) ITALY
Tel. [phone] | Fax [phone]
email [email protected] | web www.evco.it