EVCO EV3H94 Controller for DHW Heat Pump Heaters Instruction Manual

: June 6, 2024
: EVCO

Table of Contents

EVCO EV3H94 Controller for DHW Heat Pump Heaters
OVERVIEW
MEASUREMENTS AND INSTALLATION
ELECTRICAL CONNECTION
ADDITIONAL FUNCTIONS
SETTINGS
CONFIGURATION PARAMETERS
ALARMS
TECHNICAL SPECIFICATIONS
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EVCO EV3H94 Controller for DHW Heat Pump Heaters

OVERVIEW

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.

MEASUREMENTS AND INSTALLATION

Measurements in mm (inches). To be fitted to a panel, snap-in brackets provided.

EVCO EV3H94 Controller for DHW Heat Pump Heaters FIG 1

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, dampness, 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.

ELECTRICAL CONNECTION

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.

FIRST-TIME USE

Carry out the installation following the instructions given in the section MEASUREMENTS AND INSTALLATION.
Power up the device as set out in the section ELECTRICAL CONNECTION: an internal test will startup.
The test normally takes a few seconds; when it is finished the display will switch off.
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 CONFIGURATION PARAMETERS.

Disconnect the device from the mains.
Make the electrical connection as shown in the section ELECTRICAL CONNECTION without powering up the device.
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 relevant instruction sheets. If EVIF22TSX or EVIF23TSX is used, set parameter bLE to 0.
Power up the device.

USER INTERFACE AND MAIN FUNCTIONS

Switching the device on/off

`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

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| –

Setting the setpoint Economy

Check that the keypad is not locked.

| |

Touch the SET key: the display will show the label “ SP1 ”.

---|---|---

| |

Touch the SET key.

| | Touch the UP or DOWN keys within 15s to set the value within the limits r3 and r4 (default “40… 55”).

| |

Touch the SET key (or take no action for 15s).

5.| | Touch the ON/STAND-BY key.

Setting the Comfort setpoint
Check that the keypad is not locked.

| |

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.

| | Touch the UP or DOWN keys within 15s to set the value within the limits r1 and r2 (default “40… 70”).

| |

Touch the SET key (or take no action for 15s).

| |

Touch the ON/STAND-BY key.

Setting the over post activation threshold
Check that the keypad is not locked

| |

Touch the SET key: the display will show the label “ SP1 ”.

---|---|---

| |

Touch the UP or DOWN key to select the label “ SP3 ”.

| |

Touch the SET key.

| | Touch the UP or DOWN keys within 15s to set the value within

the limits 10 and r2 (default “10… 70”).

| |

Touch the SET key (or take no action for 15s).

| |

Touch the ON/STAND-BY key.

Activating manual defrost
Check that the keypad isn’t locked and that the anti-legionella and over-boost functions aren’t active.

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.

Silencing the alarm buzzer (if u9 = 1)

Touch a key.

FUNCTIONS AND LOAD OPERATIONS

Economy

the 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 defrosting)

Comfort

the 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”.

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”.

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”.

Defrosting
It activates with evaporator temperature < “d17 threshold” for “d18 time” or in manual mode, provided that the anti-legionella and over-boost 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

Photovoltaic system

It activates with photovoltaic input active
operation as in comfort mode, except for “SP2 setpoint” which becomes “SP6 setpoint”.

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.

Antifreeze

This function is used to prevent water freezing. It is activated when tank upper temperature < “SP7 setpoint” – “r0 differential” and this function is deactivated when tank upper temperature > “SP7 setpoint”
heaters are switched on.
This function can be activated only if the controller is on standby.

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 “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 seconds before the switch-on of the compressor. There are some exceptions:
defrost: in the case of hot gas (d1=1) compressor is active but the fan is off. In case of com-pressor stop (d1=2), the compressor is off but fan is active
alarms: in case of LHP compressor is off but fan is active.

ADDITIONAL FUNCTIONS

Activating/deactivating comfort operation in manual mode

| |

Touch the DOWN key for 1 s: the display will show a code.

---|---|---

| |

Touch the UP or DOWN key within 15s to select a label.

| COD.| DESCRIPTION
Auto| activates comfort operation
ECO| deactivates comfort operation

| |

Touch the SET key.

| | Touch the ON/STAND-BY key (or take no action for 60s) to exit

the procedure.

Activating the overboost function

| |

Touch the DOWN key for 1 s: the display will show a code.

---|---|---

| |

Touch the UP or DOWN key within 15s to select “ ObS ”.

| |

Touch the SET key.

| | Touch the ON/STAND-BY key (or take no action for 60s) to exit the procedure.

Displaying the operating mode

|

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

|

| Touch the ON/STAND-BY key (or take no action for 60s) to exit the procedure.

Displaying/deleting compressor functioning hours

|

Touch the DOWN key for 1 s: the display will show a code.

---|---|---

| |

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

|

Touch the SET key.

| |

Touch the UP or DOWN key to set “149” (to select rCH ).

|

Touch the SET key.

|

| Touch the ON/STAND-BY key (or take no action for 60s) to exit

the procedure.

SETTINGS

| ****

Touch the SET key for 4 s: the display will show the label “ PA ”.

---|---|---

| ****

Touch the SET key.

| | ****

Touch the UP or DOWN key within 15s to set -19 ”.

| ****

| Touch the SET key (or take no action for 15s): the display will

show the label “ SP ”.

| | ****

Touch the UP or DOWN key to select a parameter.

| ****

Touch the SET key.

| | ****

Touch the UP or DOWN key within 15s to set the value.

| ****

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.

Set the date, time and day of the week (if module EVIF23TSX, EVIF25TWX or interface EVIF25TBX is connected)

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 connect app, the date, time, and day of the week will be automatically set by the smartphone or tablet.

1.|

| Touch the UP key.
---|---|---

| |

Touch the UP or DOWN key within 15s to select the label “ rtc ”.

|

| Touch the SET key: the display will show the label “ yy ” followed

by the last two figures of the year.

| |

Touch the UP or DOWN key within 15 s to set the year.

|

Repeat actions 3. and 4. to set the next labels.

| Touch the SET key: the display will show the label for the day of the week.

|

Touch the SET key: the device will exit the procedure.

|

Touch the ON/STAND-BY key to exit the procedure beforehand.

Restoring factory settings (default)

check that the factory settings are appropriate; see the section CONFIGURATION PARAMETERS.

| ****

Touch the SET key for 4 s: the display will show the label “ PA ”.

---|---|---

| ****

Touch the SET key.

| | ****

Touch the UP or DOWN key within 15s to set “ 149 ”.

| ****

| Touch the SET key (or take no action for 15s): the display will

show the label “ dEF ”.

| ****

Touch the SET key.

| | ****

Touch the UP or DOWN key within 15s to set “ 1 ”.

| ****

| 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.

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

2 = Pt 1000

| 1 = NTC|
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

mode

| setpoint| in| comfort| 10 °C/°F… r2
22| r2| 70.0| maximum mode| setpoint| in| comfort| r1… 100 °C/°F
23| r3| 40.0| minimum mode| setpoint| in| economy| 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 mode| threshold| in| comfort| 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 pressure

| ****

the

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

| No.| PAR.| DEF.| ALARMS| MIN… MAX.
---|---|---|---|---|---
42| A0| 0| select value for low temperature alarm| 0 = DHW tank upper temperature

1 = DHW tank lower temperature

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 duration

| ****

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 the pressure switch

alarms for unit blocked alarm

| ****

0… 15

0 = disabled

62| i9| 240| counter reset time for pressure 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| 0| 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 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 Satur-

day

| 1 = with On1 e OF1

2 = with On2 e OF2

75| Hd7| 2| time for switch 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

ALARMS

CODE	DESCRIPTION	RESET	TO CORRECT
Pr1	DHW tank upper probe

alarm

| automatic| – check P0

– check probe integrity

– check the electrical connection

Pr2| DHW tank lower probe

alarm

– check the 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

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

upper probe and evaporator probe)

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)

or for digital input (high pressure input)

Digital outputs| 4 with electro-mechanical relay (compressor, defrost, fans

and heaters)

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