Immergas HYDRO FS User manual

HYDRO FS
IE
Instruction booklet and
warning
*1.041956ENG*

2
Symbols
Safety pictograms
Warning
The operation described may cause physical harm if not
carried out in accordance with safety regulations.
Dangerous electrical current
Make personnel aware that the operation described may
lead to electrical shocks if not carried out in accordance
with safety regulations.
High temperature danger
Of safety regulations, the risk of burns caused by contact
with components with high temperatures.
Prohibition
Refers to prohibited actions.
We would first of all like to thank you for having chosen one of our products.
We are sure you will be happy with it because it represents the state of the art in the technology of
home air conditioning.
By following the suggestions contained in this manual, the product you have purchased will operate
without problems, giving you optimum room temperatures with minimum energy costs.
The pictograms in the next chapter provide the necessary
information for correct, safe use of the appliance in a rapid,
unmistakable way.

3
Summary
1. General...................................................... 5
1.1 General warnings ............................................ 5
2. Modulating temperature controller kit .. 6
2.1 Assembly, set-up and connection .................... 6
2.2 Assembly........................................................ 6
2.3 Set-up of auxiliary dip-switch functions B and C 7
2.4 CP presence contact input connection............. 7
2.5 Air temperature probe assembly....................... 8
2.6 Connections ................................................... 9
3. 4-speed temperature controller kit ..... 10
3.1 Assembly and connections............................ 10
3.2 Assembly...................................................... 10
3.3 Air temperature probe assembly..................... 11
3.4 Connections ................................................. 11
3.5 Water probe kit management......................... 11
4. Universal card kit for commercial
temperature controller ......................... 12
4.1 Assembly and connections............................ 12
4.2 Assembly...................................................... 12
4.3 Connection diagram with 3-speed thermostat 13
4.4 Connections with 3-speed thermostats .......... 13
4.5 LED signals................................................... 14
4.6 Water probe management with 3-speed
thermostat .................................................... 14
5. 0-10 V demand board kit ....................... 15
5.1 Assembly and connections............................ 15
5.2 Assembly...................................................... 15
5.3 LED signals................................................... 15
5.4 Connection diagram with 0-10V DC
thermostats / signals ..................................... 16
5.5 Connections with 0-10V thermostats.............. 16
6. Feet kit .................................................... 17
6.1 Assembly...................................................... 17
7. 2-way/3-way valve unit kit..................... 18
7.1 List of hydraulic accessories .......................... 18
7.2 Pipeline diameter........................................... 18
7.3 Access to inner parts..................................... 18
7.4 Mounting the thermostatic head..................... 19
7.5 Lockshield adjustment................................... 19
7.6 Way valve with thermo-electric head kit .......... 21
7.7 Way valve with thermo-electric head deviator
valve kit......................................................... 22
7.8 Connections ................................................. 24
7.9 2-way valve unit kit ........................................ 25
7.10 3-way valve unit kit ........................................ 26
8. Cooler-convector, heating, cooling
and deumidification ............................... 27
8.1 Fundamental safety rules ............................... 27
8.2 Description ................................................... 27
8.3 Identification.................................................. 28
8.4 Charts of Water flow - Pressure drop.............. 29
8.5 Dimensions................................................... 30
8.6 Product delivery ............................................ 31
8.7 Handling and transportation ........................... 31
8.8 Access to inner parts..................................... 31
8.9 Installation..................................................... 32
8.10 Minimum installation distances ....................... 32
8.11 Vertically mounted ......................................... 33
8.12 Hydraulic connections ................................... 34
8.13 Condensation discharge................................ 35
8.14 Electrical connections.................................... 36
8.15 Filling the system........................................... 36
8.16 Evacuation of air when filling system............... 37
8.17 First commissioning....................................... 37
9. Modulating temperature controller kit. 38
9.1 SMART TOUCH electronic control panel..............38
9.2 Display .................................................................38
9.3 Key function.................................................. 38
9.4 General On Switch........................................ 39
9.5 Activation ...................................................... 39
9.6 Heating/cooling operation modes setting........ 39
9.7 Stand By......................................................... 39
9.8 Temperature selection ................................... 40
9.9 Automatic operation ..................................... 40
9.10 Silent operation ............................................ 40
9.11 Night-time operation ..................................... 40
9.12 Operation at maximum ventilation speed ....... 40
9.13 Key lock........................................................ 41
9.14 Reduce brightness to minimum...................... 41
9.15 Deactivation .................................................. 41
9.16 Room temperature probe regulation offset...... 41
9.17 Switching off for long periods......................... 41
9.18 Error signals .................................................. 42
10. 4-speed temperature controller kit ..... 43
10.1 LCD electronic control panel ...............................43
10.2 LED indications ............................................. 43
10.3 Key function.................................................. 43
10.4 General On Switch........................................ 43
10.5 Activation ...................................................... 44
10.6 Heating/cooling operation modes setting........ 44
10.7 Stand By......................................................... 44
10.8 Temperature selection ................................... 44
10.9 Ventilation speed regulation............................ 44
10.10Key lock.......................................................... 45
10.11Reduce brightness to minimum...................... 45
10.12Deactivation .................................................. 45
10.13Switching off for long periods......................... 45
10.14Error signals .................................................. 45
11. Maintenance........................................... 46
11.1 Cleaning the outside...................................... 46
11.2 Cleaning air suction filter ................................ 46
11.3 Energy saving tips ......................................... 47

4
12. Troubleshooting..................................... 48
12.1 Table of anomalies and remedies ................... 48

5
1. GENERAL
1.1 General warnings
- This instruction is an integral part of the booklet of
the appliance on which the kit is installed. Please consult
this booklet for general warnings and fundamental safety
rules.
- This manual is designed only for the qualified
and authorised installation technician, who must be
sufficiently trained and in possession of all psycho-
physical requirements as per the law.
- All operations must be carried out with care and
according to best practices, and in compliance with
workplace safety regulations.
- After unpacking, check that the contents are intact
and that all parts are included. If not, contact the agent
who sold the appliance to you.
- It is forbidden to modify the safety or adjustment
devices without authorisation from and indications of the
manufacturer.
- It is forbidden to dispose of, or leave in the reach of
children, the packaging materials which could become
a source of danger.
- Repairs or maintenance must be performed by the
Technical Assistance Service or by qualified personnel
in accordance with this manual. Do not modify or tamper
with the appliance as this could create dangerous
situations and the manufacturer will not be liable for any
damage caused.

6
A
D
E
C
H
I
L
B
G
M
2. MODULATING TEMPERATURE CONTROLLER KIT
The controllers have two independent clean contacts for
controlling a refrigerator unit, a boiler and a presence input.
The 2 tube versions have a 230V output to power the
summer and winter solenoid valve.
The 10 kΩ water temperature probe positioned in the
compartment on the battery regulations the minimum level
when heating (30°C) and the maximum level when cooling
(20°C).
The board also has a function when there is no water
probe, in such cases the fan stop thresholds are ignored.
Slide the control panel into its housing in the upper part
of the device and fix it with the two fixing screws (ref. A).
To install the connection box:
- open the box (ref. B);
- lock the lower tooth into its hole (ref. C) on the side of
the device;
- hook the upper part of the box to the side (ref. D);
- fix it with the two fixing screws (ref. E);
- connect the grounding cable to the fan coil body (ref. M)
using the fixing screws (the minimum force that must be
applied for tightening screws must be around 2N);
- connect the fast connector of the MOTOR to the other
on the board (ref. I) *;
- on the two GRID block terminals (ref. L) there is a bridge
which must not be removed.
- For other versions, remove the bridge and connect the
two terminals originating on the grill safety microswitch*;
- connect the water probe to the H2 connector on the
device.
The water temperature probe controls the temperature
inside the batteries and determines when the fan starts
according to pre-set parameters (minimum operation
in winder and maximum in summer).** Check that
they are correctly inserted into the compartment on
the battery.
- Connect the electrics, tidy cables and fix them with
the three clevises supplied (ref. G);
- close the box with the 4 screws (ref. H);
- refit the vanity plate on the side of the unit;
- tighten the upper screws on the control panel;
- place the screw head covers in their housing on the
control panel;
* For versions with hydraulic connections on the right,
refer to the relevant paragraph
** The regulation also works without a water probe
connected
2.1 Assembly, set-up and connection
2.2 Assembly

7
A
C
B
N EV1 N EV2
BA
ON
D
C
H4 H2 AIR
COMM
ASCII
RTU
MOTOR
LN
GRIDGRIDCP
CHILLER BOILER
LED
There are two dip switches on the controller circuit board
for configuring unit operation as per requirements.
- The night-time heating operation logic is modified by
using dip switch C:
- in the ON position, the fan is always off, and heats the
room using radiation and natural convection, as with
traditional radiators; in the off position it operates as a
normal fan.
- By positioning dip switch B to ON, when cooling, the
fan operates at the minimum speed even after having
reached the set point, to allow for more uniform
operation of the temperature probe and to avoid
layering in the air. With the cursor in the OFF position,
the functions are cycled (4 minutes ON, 10 minutes
OFF).
On closing the contact connected to the CP input (ref. A)
the panel is placed in stand-by mode.
If the contact is open the unit is active, if the contact is
closed it is deactivated when a key is pressed the
symbol flashes.
The input cannot be connected in parallel to that of other
electronic boards (use separate contacts).
2.3 Set-up of auxiliary dip-switch functions B and C
2.4 CP presence contact input connection

8
B
C
D
A
- To position the temperature probe (ref. A):
- pass the probe through the hole on the shoulder (ref. B)
- insert the probe into the lower hole (ref. C)
- fix the probe on the relevant hook (ref. D)
2.5 Air temperature probe assembly

9
H2* water temperature probe 10 kΩ
AIR air temperature probe 10 kΩ
M1 DC inverter fan motor
S1 grill safety micro-switch
Y1 water solenoid valve (230V/ 50Hz 1A output
voltage)
L-N electrical power supply 230V/50Hz
BO boiler consent output (free contact max 1A)
CH chiller consent output (free contact max 1A)
CP presence input sensor (if closed, the fan coil unit
is placed in standby)
*If after switching the power on the board detects
the probe, start-up occurs in normal conditions
with the minimum water temperature when
heating (30°C) and maximum when cooling
(20°C).
The board also has a function when there is no
probe, in such cases the fan stop minimum and
maximum thresholds are ignored.
2.6 Connections

10
A
MLF
Slide the control panel into its housing in the upper part
of the device and fix it with the two fixing screws (ref. A).
To install the board:
- connect the grounding cable to the unit structure (ref.
M) using the fixing screws (the minimum force that
must be applied for tightening screws must be around
2N);
- connect the fast connector of the MOTOR to the other
on the board (ref. I) *;
N.B.: should the board not be fitted in the factory, the
fan motor must be rotated 180° due to the length of
the standard fan coil cable.
- on the two GRID block terminals (ref. L) there is a
bridge which must not be removed.
- For other versions, remove the bridge and connect the
two terminals originating on the grill safety microswitch;
N.B.: should the two brown terminals on the unit be
too short, replace them with those included in the kit
packaging.
- connect the water probe connector H2 (ref. F) on the
unit.
The water temperature probe controls the temperature
inside the batteries and determines when the fan
starts according to pre-set parameters (minimum
operation in winter and maximum in summer). Check
that they are correctly inserted into the compartment
on the battery.
- make the electrical connections, tidy the cabling;
- refit the vanity plate on the side of the unit;
- tighten the upper screws on the control panel;
- place the screw head covers in their housing on the
control panel;
- * For versions with hydraulic connections on the
right, refer to the relevant paragraph.
The on-board controller with speed selector and ON/OFF
key, room thermostat adjustable from 5 to 40°C, winter
summer selector and minimum winter temperature function
(30°C) and maximum summer temperature (20°C) is suitable
for fitting on board the unit and has a 230V - 1A output for
controlling a solenoid valve.
3. 4-SPEED TEMPERATURE CONTROLLER KIT
3.1 Assembly and connections
3.2 Assembly

11
B
C
D
A
C A D
- To position the temperature probe (ref. A):
- pass the probe through the hole on the shoulder (ref. B)
- insert the probe into the lower hole (ref. C)
- fix the probe on the relevant hook (ref. D)
If the board detects the water temperature detecting probe
on the device positioned in the relevant compartment of
the battery, it starts in normal conditions. If the probe is not
connected, its absence is indicated by the blue and red
LEDs flashing together, and operation stops.
To confirm operation without the probe, press and hold the
summer/winter button for 5 seconds (ref. A).
This condition is saved by the board for future start-ups.
In any case, as and when the probe is connected, the unit
returns to normal operation with temperature thresholds.
If the unit operates with the probe connected and the water
temperature is not suitable for active functioning (over 20°C
when cooling, under 30°C when heating) the fan will stop
and the anomaly will be indicated by the corresponding LED
flashing (cooling: blue C or heating: red D).
H2 water temperature probe 10 kΩ
M1 DC inverter fan motor
S1 grill safety micro-switch
Y1 water solenoid valve (230V/ 50Hz 1A output
voltage)
L-N 230V/50Hz electrical power supply
AIR air temperature probe 10 kΩ
3.3 Air temperature probe assembly
3.4 Connections
3.5 Water probe kit management

12
A
I
L
D
E
C
H
B
G
M
Assembled on-board the unit, this card allows the regulation
of the motor with fixed speeds; it can be combined with
control panels with thermostat and with all control panels
available in the market.
It has a 230 V output to pilot the summer and winter solenoid
valve.
Slide the blanking panel into its housing in the upper part of
the device and fix it with the two fixing screws (ref. A).
To install the connection box:
- open the box (ref. B);
- lock the lower tooth into its hole (ref. C) on the side of
the device;
- hook the upper part of the box to the side (ref. D);
- fix it with the two fixing screws (ref. E);
- connect the grounding cable to the unit body (ref. M)
using the fixing screws (the minimum force that must be
applied for tightening screws must be around 2N);
- on the two SW GRL block terminals (ref. L) there is a
bridge which must not be removed.
- For other versions, remove the bridge and connect the
two terminals originating on the grill safety microswitch*;
- connect the fast connector of the MOTOR to the other
on the board (ref. I);
- Connect the electrics, tidy cables and fix them with
the three clevises supplied (ref. G) ;
- close the box with the 4 screws (ref. H) ;
- refit the vanity plate on the side of the unit;
- tighten the upper screws on the blanking panel;
- place the screw head covers in their housing on the
blanking panel;
* For versions with hydraulic connections on the right,
refer to the relevant paragraph.
4. UNIVERSAL CARD KIT FOR COMMERCIAL TEMPERATURE
CONTROLLER
4.2 Assembly
4.1 Assembly and connections

13
The CV input is the board ON/OFF which when open puts
the board in stand-by. It must be bridged to the L terminal
on the 230V power supply to activate solenoid valve Y1.
The 4 speed inputs V1, V2, V3 and V4, when bridged
to the L terminal on the 230V power supply, activate the
fan if the S1 input to which the grill safety microswitch is
connected is closed. The sequence is: maximum speed
(1400 rpm on terminal V1), medium speed (1100 rpm on
terminal V2), minimum speed (680 rpm on terminal V3)
and supersilent speed (400 rpm on terminal V4).
Connect the three thermostat speeds to 3 out of the 4
available inputs as per the characteristics and use of the
room: connect, for example, medium speed V2, minimum
V3 and supersilent V4 for residential applications, when
greater silence is required, whereas V1, V2 and V3 can be
connected for commercial applications where the thermal
yield is more important.
If multiple inputs are simultaneously closed, the motor will
run at a number of revs equal to that of the connection
with the highest speed.
Multiple cards can be connected in parallel to a single
thermostat, also using different speeds.
Make the electrical connections to a thermostat fit for use
according to the diagram.
4.3 Connection diagram with 3-speed thermostat
4.4 Connections with 3-speed thermostats
L-N electrical supply 230V-50Hz
EV solenoid valve permission input
V1 maximum fan speed
V2 medium fan speed
V3 minimum fan speed
V4 supersilent speed
E
heating selection input, cooling
See paragraph on Water Probe Management
Y2 output for mobile suction panel servo (power
output 230V/ 50Hz 1A)
Y1 water solenoid valve (230 V/ 50 Hz 1A output
voltage)
M1 DC inverter fan motor
S1 safety micro-switch for grill
TA
3-speed room thermostat (to be purchased,
installation and connection to be made by
installer)
CV thermostat permission
SV speed selector
H2* water temperature probe (10 kΩ)
*positioned in the on-board battery.
See paragraph on Water Probe Management

14
B
A
C
If the board is used with electromechanical thermostats, or with
other commercial controllers with water probe, the on-board
probe H2 should not be connected and the fan is controlled by
the remote control.
If on the other hand the controller is not set up for managing the
water probe, this function can be performed by the board, by
connecting the 10 kΩ probe on the battery to the H2 connector
on the board (ref. B).
In this case the board carries out the minimum temperature
function for heating operations and maximum temperature
function for cooling. Therefore, if the water temperature is not
suitable for active operation (above 20°C when cooling, under
30°C when heating) the fan is stopped and the anomaly is
signalled by a single flash + pause of the LED (ref. A).
The discrimination between heating/cooling is actuated via the
Summer-Winter (ref. C) input of the board: leaving it open the
board activates heating, closed activates cooling.
If after having connected the probe it is disconnected or
measures incorrect values (e.g. installation of 2 kΩprobe in the
place of the 10 kΩprobe) the anomaly is signalled by 3 flashes
+ pause of the LED (ref. A) and operation is stopped.
To confirm operation without a probe, turn the power to the
board off and then on again.
This condition is saved by the board for future start-ups.
In any case, as and when the probe is connected, the unit
returns to normal operation with temperature thresholds.
The LED (ref. A) is off if the CV input is not closed (stand-by
condition).
It turns on when the CV contact is closed and indicates
normal operation.
• Flashes frequently if the grille microswitch S1 is activated
due to the filter cleaning operation
• 1 flash + pause indicates a fan stoppage alarm due to
unsuitable water (with H2 water probe connected).
• 2 flashes + pause due to a motor alarm (e.g. blockage
caused by foreign objects, faulty rotation sensor).
• 3 flashes + pause indicates a disconnected or faulty
water probe alarm.
4.5 LED signals
4.6 Water probe management with 3-speed thermostat

15
A
HI
D
E
C
G
B
F
L
When fitted on board the machine it allows for managing the
motor, with modulated speed; motor regulation can be made
using an analogue 0-10V DC input with 25 kΩ impedance.
For board control outputs these impedance values must be
considered, especially when controlling more than one unit
in parallel.
It has a 230 V output to pilot the solenoid valve.
Slide the blanking panel into its housing in the upper part of
the device and fix it with the two fixing screws (ref. A).
To install the connection box:
- open the box (ref. B);
- lock the lower tooth into its hole (ref. C) on the side of
the device;
- hook the upper part of the box to the side (ref. D);
- fix it with the two fixing screws (ref. E);
- connect the grounding cable to the unit structure using
the fixing screws (the minimum force that must be
applied for tightening screws must be around 2N);
- on the two GRID block terminals (ref. I) there is a bridge
which must not be removed.
- For other versions, remove the bridge and connect the
two terminals originating on the grill safety microswitch;*
- connect the fast connector of the MOTOR to the other
on the board (ref. H);
- Connect the electrics, tidy cables and fix them with
the three clevises supplied (ref. F) ;
- close the box with the 4 screws (ref. G) ;
- refit the vanity plate on the side of the unit;
- tighten the upper screws on the blanking panel;
- place the screw head covers in their housing on the
blanking panel;
* For versions with hydraulic connections on the right,
refer to the relevant paragraph.
The LED (ref. L) is off is the input signal is less than 0.9V.
It turns on with values greater than 1V and indicates normal
operation.
• Flashes frequently if the grille microswitch S1 is activated
due to the filter cleaning operation
• 2 flashes + pause due to a motor alarm (e.g. blockage
caused by foreign objects, faulty rotation sensor).
5. 0-10 V DEMAND BOARD KIT
5.1 Assembly and connections
5.2 Assembly
5.3 LED signals

16
Y2
OFF
0
10 V
INPUT
(V DC
)
M1
110
Y1
1,1
MAX rpm
ON
0,9
MIN rpm
The 10V input, if the S1 input which the grill safety micro
switch is connected to is closed, activates solenoid valve Y1
and regulations fan revolutions.
The speed "ramp" provides for linear regulation from the
minimum value (400 rpm) to the maximum value (1,400 rpm)
for voltage values ≥ 1.1V÷10 V DC.
The motor is off when values are lower than 1V DC.
The Y1 solenoid valve is activated for power values > 1V
DC and switches off then the power drops below 0.9V
DC.
Input impedance 25 kΩ
OUTPUT FEATURES
5.5 Connections with 0-10V thermostats
Make the electrical connections to a thermostat fit for use
according to the diagram
L-N Electrical power supply 230V-50 Hz
10V Appliance piloting input 0÷10 V
Y1 water solenoid valve (230V/ 50Hz 1A output
voltage)
Y2 output for mobile suction panel servo (power
output 230 V/ 50Hz 1A)
M1 DC inverter fan motor
S1 safety micro-switch for grill
5.4 Connection diagram with 0-10V DC thermostats / signals

17
A
B
A
B
This instruction is an integral part of the booklet of the
appliance on which the kit is installed. Please consult this
booklet for general warnings and fundamental safety rules.
These accessories cover the hydraulic pipes coming
up through the floor. They should be fitted on Hydro FS
appliances anchored to the back wall.
They have a sleek design and are also easy to remove for
maintenance or cleaning.
These Feet should not be used to anchor the terminal to
the ground.
- Rest the back of the appliance on a horizontal surface;
- screw the four threaded supports provided to the
structure;
- stand the appliance up again and fasten it to the wall;
- fit the two covers to the supports.
6. FEET KIT
6.1 Assembly
Athreaded supports Bsupports cover

18
To avoid penalising the performance of the system the
water inlet and outlet must be as indicated in the various
figures.
For a rapid and correct assembly of the components
follow carefully the sequences described in the various
sections.
This instruction is an integral part of the booklet of the
appliance on which the kit is installed. Please consult this
booklet for general warnings and fundamental safety rules.
- 2-way valve unit with thermo-electric head kit. - 3-way deviator valve unit with thermo-electric head
deviator valve kit.
The minimum internal diameter that must be respected for
the pipelines of the hydraulic connections varies according
to the model:
7. 2-WAY/3-WAY VALVE UNIT KIT
7.1 List of hydraulic accessories
U.M. 200 400 600 800 1000
support covers mm 12 14 16 18 20
7.2 Pipeline diameter
7.3 Access to inner parts
- Lift it up the side panels.
- Move orizzontally to remove.
ALeft panel
BRight panel

19
A
B
C

 
Tighten the plastic disc to the valve body. Attach the head
to the valve body.
To facilitate the system mounting, filling and venting
operations, even without electric power, the thermostatic
head is supplied with a tool that keep it open.
Remove the tool from the thermostatic head before
starting the system.
The lockshields supplied with the hydraulic kits provide
an adjustment that balances the system load losses. To
ensure a correct adjustment and balancing of the circuit,
follow the procedure indicated below:
- With a screwdriver, loosen and remove the slotted
grub screw inside the hexagonal head.
- Close the adjustment screw using a 5 mm Allen key
(A)
- Re-tighten the slotted grub screw then mark the
reference point for the adjustment with an “x” (B).
- Align the screwdriver with the “x”, then open with
a number of turns (C) according to diagram Äp-Q
shown on page 22.
The number of turns refers to the micrometric screw
Then fully open the screw (D). Now the pre-adjustment
has been set and will not change if there are repeated
openings or closings with the Allen key.
7.4 Mounting the thermostatic head
7.5 Lockshield adjustment
Aplastic tool
Bvalve body
Cthermostatic head

20
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   
   
   

   




































     
   
 
Load losses based on the adjustment of the lockshield
present in all kits.