Evco EVJH95 Instruction Sheet

EVCO S.p.A. | EVJH95 | Instruction sheet ver. 1.1 | Code 104JH95E113 | Page 1 of 3 | PT 17/23
EVJH95
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.
1 MEASUREMENTS AND INSTALLATION
Measurements in mm (inches). Front installation on a plastic or metal panel (with elastic
holding flaps).
N.B.
The thickness of a metal panel must be between 0.8 and 1.5 mm (1/32 and 1/16 in),
while that for a plastic panel must be between 0.8 and 3.4 mm (1/32 and 1/8 in).
INSTALLATION PRECAUTIONS
- 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 connect the power cables as far away
as possible from the signal cables.
Controller for DHW heat pump heaters
PRECAUTIONS FOR ELECTRICAL CONNECTION
If using an electrical or pneumatic screwdriver, adjust the tightening torque.
-
If the device has been moved from a cold to a warm place, the humidity may have
-
caused condensation to form inside. Wait 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 doing any type of maintenance.
-
- Do not use the device as 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
SP1 55.0 setpoint in economy mode
SP2 65.0 setpoint in comfort mode
P0 1 type of probe
P2 0 temperature measurement unit
P3 1 enabled probes
d1 2 type of defrost
Then check that the remaining settings
CONFIGURATION PARAMETERS.
4. Disconnect the device from the mains.
5. Make the electrical connection as shown in the section ELECTRICAL CONNECTION
without 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
relevant 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
compressor switched compressor switched
on off
fans switched on fans switched off
anti-legionella function -
active
heaters switched on heaters switched off
AUX 1
auxiliary load on auxiliary load off
AUX 2
defrost active -
reserved -
time band active -
temperature display -
alarm active -
HACCP
compressor -
maintenance request
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.
Touch the UP or DOWN keys within 15 s to set the value within
3.
the limits r3 and r4 (default "40... 55").
4. Touch the SET key (or take no action for 15 s).
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.
Touch the UP or DOWN keys within 15 s to set the value within
4.
the limits r1 and r2 (default "40... 70").
5.
6.
4.5 Setting the overboost activation threshold
Check that the keypad is not locked.
1.
2.
3.
4.
5.
6.
MIN... MAX.
r3... r4
4.6 Setting the fan speed (if u1 = 3)
r1... r2
Check that the keypad is not locked.
0 = PTC 1 = NTC
1.
2 = Pt 1000
0 = °C 1 = °F
2.
0 = DHW tank upper probe + high
pressure input
LAB.
1 = DHW tank upper and lower
FCn
probe
FCF
0 = electric 1 = hot gas
3.
2 = compressor stopped
3 = hot gas balancing the pressure
4.
are appropriate; see the section
LAB.
0
1
2
5.
6.
Between the deactivation of a relay and the activation of the other there is a delay of 5/10 s.
4.7 Activating manual defrost
Check that the keypad isn't locked and that the anti-legionella and overboost functions aren't
active.
1.
If P4 = 1 or 2 (default), defrost is activated provided that the evaporator temperature is lower
than the d2 threshold.
4.8 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"
- support heaters on, with a single probe configured (P3 = 0), if DHW tank upper
temperature < "SP2 - r6 threshold - r8 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 – r8 differential" and off if DHW tank upper temperature > "SP2".
FLASHING
- compressor protection active 5.3 Anti-legionella
- setpoint being set It activates at "H0 intervals" or at "Ant time", provided that DHW tank lower temperature >
"SP1 setpoint" and > "SP2 setpoint"
fans switched on with low speed
- 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.
operation with EVconnect app ac-
5.6 Photovoltaic system
tive
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
temperature < "SP7 setpoint" – "r0 differential" and this function is deactivated when tank
upper temperature > "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 "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
compressor stop (d1=2) compressor is off but fan is active
- alarms: in case of LHP compressor is off but fan is active.
Touch the SET key (or take no action for 15 s).
Touch the ON/STAND-BY key.
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 15 s to set the value within
the limits 10 and r2 (default "10... 70").
Touch the SET key (or take no action for 15 s).
Touch the ON/STAND-BY key.
Touch the SET key: the display will show the label "SP1".
Touch the UP or DOWN keys within 15 s to select the label "FCn"
or "FCF".
MEANING
fan speed if compressor on
fan speed if compressor off
Touch the SET key.
Touch the UP or DOWN keys within 15 s to set the value.
MEANING
off
low speed
high speed
Touch the SET key (or take no action for 15 s).
Touch the ON/STAND-BY key.
Touch the DEFROST key for 4s.