Evco EV3B94 User manual

EVCOS.p.A.|EV3B94|Instructionsheetver.4.0|Code1043B94E404|Page1of4|PT04/20
EV3B94 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.
1 MEASUREMENTS 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.
2 ELECTRICAL 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.
3 FIRST-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. 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 - -
°C/°F
temperature display
- -
AUX heaters switched on
heaters switched off -
device switched off
device switched on device being switched on/off
When 30s have elapsed without the keys being pressed, the display will show the "Loc" label
and the keypad will lock automatically.
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”.
High
pressureswitch
electric

EVCOS.p.A.|EV3B94|Instructionsheetver.4.0|Code1043B94E404|Page2of4|PT04/20
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 < “SP2 setpoint - r0 differential” and off
if DHW tank lower temperature > “SP2 setpoint”
- fans on if compressor on
- heaters on if DHW tank upper temperature < “r6 threshold - r7 differential” and off if
DHW tank upper temperature > “r6 threshold”.
5.3 Anti-legionella
It activates at “H0 intervals”, 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 the economy function is not in progress and 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
only if “d1” = 3.
This function switch on the defrost output “d11” 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 and that economy mode isn’t active.
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 for 1 s: 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.
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 the PAS value (de-
fault “-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.

EVCOS.p.A.|EV3B94|Instructionsheetver.4.0|Code1043B94E404|Page3of4|PT04/20
7.2 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.
7 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 economy
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... 15 °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... 199 °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... 199 °C/°F
25
r5 0 enable setpoint blocking in econ- omy and comfort modes 0 = no 1 = yes
26 r6 15.0 heater threshold in comfort mode 10... 199 °C/°F
27
r7 15.0 heater threshold differential in comfort mode 1... 15 °C/°F
No. PAR. DEF. COMPRESSOR MIN... MAX.
28
C0 5 compressor on delay from power-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 0 = 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
EV3B94N9PXRX01 and
EV3B94N9VXRX01
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
No. PAR. DEF. ALARMS MIN... MAX.
42 A0 0 select value for low temperature
alarm
0 = DHW tank upper tem-
perature
1 = DHW tank lower tem-
perature
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 temperature
alarm
0 = DHW tank upper tem-
perature
1 = DHW tank lower tem-
perature
2 = evaporator temperature
46 A4 90.0 high temperature alarm thresh-
old
0... 199 °C/°F
default 75.0 in
EV3B94N9PXRX01 and
EV3B94N9VXRX01
47
A5 0 high temperature alarm type 0 = disabled 1 = absolute
48
A6 120 high temperature alarm delay from power-on 0... 240 min
49
A7 15 high/low temperature alarm de- lay 0... 240 min
50
A11 2.0 high/low temperature alarm re- set differential 1... 30 °C/°F
No. PAR. DEF. FAN MIN... MAX.
51 F0 0 enable fan 0 = no 1 = yes
No. PAR. DEF. ANTI-LEGIONELLA MIN... MAX.
52
H0 30 anti-legionella interval 0... 99 d (days) 0 = none
53 H1 70.0 anti-legionella thermal threshold 10... 199 °C/°F
54
H3 2 anti-legionella thermal threshold maintenance duration 0... 240 min 0 = function disabled
No. PAR. DEF. DIGITAL INPUTS MIN... MAX.
55 i0 0 multi-purpose input function 0 = disabled
1 = pressure switch
2 = green
56
i2 0 compressor-on delay from pres- sure switch alarm reset 0... 120 min
57 i3 0 enable photovoltaic system 0 = no 1 = yes
58
i4 1 photovoltaic system input activa- tion 0 = with contact closed 1 = with contact open
59
i5 1 high pressure input activation 0 = with contact closed 1 = with contact open
60
i8 3 number of pressure switch alarms for unit blocked alarm 0... 15 0 = disabled
61
i9 240 counter reset time for pressure switch alarms 1... 999 min
62
i10 240 pressure switch alarm delay from compressor-on 0... 240 s
63
i11 60 time pre opening hot gas defrost valve 0... 240 s
64 i12 0 fan off during pressure
switch/unit blocked alarm
0 = no 1 = yes
default 1 in
EV3B94N9PXRX01 and
EV3B94N9VXRX01
No. PAR. DEF. DIGITAL OUTPUTS MIN... MAX.
65
u0 1 enable relay K2 and relay K4 in- version 0 = no (defrost on K2) 1 = yes (defrost on K4)
66 u9 1 enable alarm buzzer 0 = no 1 = yes
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
AL low temperature alarm automatic check A0, A1 and A2

EVCOS.p.A.|EV3B94|Instructionsheetver.4.0|Code1043B94E404|Page4of4|PT04/20
AH high temperature alarm automatic check A3, A4 and A5
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).
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
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