Innova ehpocaGEO 8M User manual

something new in the air
Manuale d’installazione / Installation manual
ehpocaGEO
something new in the air
ehpocaGEO
8M-12M-16M-16T-22T
Installation manual

2
EN
Compliance
We would first of all like to thank you for having chosen one of our products and congratulate you
on your choice of water-water heat pump.
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 water-water heat pump that you have
purchased will operate without problems giving you optimum room temperatures with minimum
energy costs.
Innova S.r.l
This unit complies with European Directives:
• Low voltage 2006/95/CE;
• Electro-magnetic compatibility 2004/108/CE;
• Use restrictions of hazardous substances in electrical
and electronic devices 2011/65/CE RoHS2;
• Refuse from electrical and electronic devices2002/96/
CE (RAEE).
And subsequent amendments.
Pictograms in the next chapter provide the necessary
information for correct, safe use of the machine in a rapid,
unmistakable way.
U
User
- Refers to pages containing instructions or information
for the user.
I
Installer
- Refers to pages containing instructions or information
for the installer
I
Service
- Refers to pages containing instructions or information
for the installer TECHNICAL CUSTOMER SERVICE.
Symbols
Editorial pictograms
Safety pictograms
Generic danger
- Signals to the personnel that the operation described
could cause physical injury if not performed according
to the safety rules.
Danger of high voltage
- Signals to the personnel that the operation described
could cause electrocution if not performed according to
the safety rules.
Danger due to heat
- Signals to the personnel that the operation described
could cause burns if not performed according to the
safety rules.
Do Not
- Refers to actions that absolutely must not be
performed.

3
1.1 4
1.2 5
1.3 6
1.4 7
2.1 10
2.2 10
2.3 10
2.4 11
2.5 12
2.6 13
2.7 14
2.8 16
2.9 16
2.10 16
2.11 17
2.12 18
2.13 20
2.14 20
2.15 21
2.16 22
2.17 22
2.18 22
3.1 23
4.1 29
4.2 33
4.3 38
4.4 39
4.5 39
4.6 40
4.7 40
4.8 40
4.9 40
4.10 42
4.11 43
EN
1 General
General information..............................................................
Machine identification ............................................................
EhpocaGEO System ............................................................
Description of the appliance .......................................................
2 Installation
Storage.......................................................................
Receipt and unpacking ...........................................................
Positioning the unit ..............................................................
Receipt and unpacking ...........................................................
Installation method...............................................................
Hydraulic connections ............................................................
General system diagram ..........................................................
Storage tanks ..................................................................
Filling the system ................................................................
Ethylene glycol solution ...........................................................
Setting the circulation pump........................................................
Residual useful head/flow rate diagrams ...............................................
Water-run disposal circuit..........................................................
System drain ...................................................................
Electrical connections ............................................................
Positioning the external air probe ....................................................
Positioning the geothermal field temperature probes ......................................
Positioning the probes in the tanks ...................................................
3 Technical information
Wiring diagrams ................................................................
4 Use and maintenance
Control panel...................................................................
Appliance operation..............................................................
General start-up and settings .......................................................
System delivery .................................................................
Switch off for long periods .........................................................
Cleaning ......................................................................
Maintenance ...................................................................
Operating aspects that must not be interpreted as problems
Troubleshooting.................................................................
Technical data..................................................................
11 Touch screen chronothermostat functions .............................................
This booklet code N273021A - Rev. 3 - (06/14) consists
of 48 pages.

4
1.1 General information
Warnings
This manual serves to provide you with the instructions
and explanations you need to make the best possible use
of your airconditioner.
We suggest that you read it carefully before starting to use
the appliance.
Keep the manual in a dry place to avoid deterioration for at
least 10 years for future reference.
This manual is divided into 4 sections:
• General information
Contains information for the specialized installer and
end user.
It contains information, technical data and important
warnings to heed before installing and using the
water-water heat pump.
• Installation
Contains information exclusively intended for the
specialized installer.
It contains all the information necessary for the
positioning and mounting of the airwater heat pump in
the place where it will be installed.
The installation of the water-water heat pump by
non-specialised personnel will invalidate the warranty
conditions.
• Use and maintenance
It contains useful information for understanding the
use and programming of the water-water heat pump
and the most common maintenance interventions.
• Technical specifications
It contains all the detailed technical information on the
device.
GENERAL INFORMATION
This instruction booklet is an integral part of the appliance
and therefore it must be kept with care and must ALWAYS
accompany the appliance even when the latter is transferred
to another owner or user or transferred to another system. If
it gets damaged or lost, please request another copy to the
local Technical Assistance Service.
The document is confidential by law and it is forbidden
to be copied or transferred to third parties without
the specific permission of the manufacturer. The
manufacturer reserves the right to make changes to its
models at any time, without prejudice to the essential
features described in this manual.
The precautions specified in this manual and on the
labels attached to the appliances must be complied
with during all operations on the appliance, and all
precautions based on common sense and the Safety
Regulations in force in the place of installation must be
adopted.
Read this manual carefully before proceeding with
any operation (installation, maintenance and use) and
strictly follow the instructions described in the individual
chapters. Failing to comply with the warnings provided
in this manual and any use that exceeds the specified
operating limits will render the warranty null and void.
Make all personnel involved in machine use aware of
these instructions.
The manufacturer assumes no responsibility for harm
caused to persons and damage caused to property
resulting from failure to comply with the regulations in
this booklet.
Only original spare parts are to be used when replacing
parts.
The appliances must be installed by a qualified company
that must issue a declaration of conformity once the work is
completed, in compliance with current Regulations and the
guidelines provided by the manufacturer in this booklet.
Always use personal protective equipment when
operating on the appliances.
Installing and performing maintenance on air conditioning
equipment such as this, could be dangerous as it
contains pressurised refrigerant and live electrical
components.
Therefore, installation, commissioning and subsequent
maintenance should only be performed by authorised
and skilled personnel
If refrigerant has leaked, ventilate the environment as the
liquid refrigerant produces toxic gas if exposed to a flame.
When installing or relocating the system, make sure that no
substance, such as air, other than the specified refrigerant
liquid (R410A) penetrates the refrigerant circuit. The
presence of air or other foreign substances in the refrigerant
liquid circuit may cause an abnormal increase in pressure
or system malfunction, resulting in personal injury.
In the event of water leaks, turn off the main switch and
close the water taps. Immediately call the Technical
Assistance Service or other qualified personnel and do not
intervene personally on the appliance
If there is a boiler in the system, verify that the temperature
of the water circulating inside the appliance does not
exceed 65°C during its operation.
If the unit is not used during the cold period, drain all the
hydraulic circuits of the machine to prevent them from
freezing.

5
S
I
U
B
A
1.2
A
B
EN GENERAL INFORMATION
The use of products that use of electricity and water
requires the observation of some fundamental safety rules
such as:
The use of the unit by children and unassisted
disabled persons is forbidden.
It is forbidden to touch the unit if barefoot and with
parts of the body that are wet or humid.
It is forbidden to clean the unit without first
disconnecting it from the mains power supply by
switching the system master switch to OFF.
It is forbidden to modify the safety or adjustment
units without authorisation and the indications of the
manufacturer.
It is forbidden to pull out or twist the electric cables
coming out of the unit, even when disconnected from
the mains power supply.
It is forbidden to open the access doors to the inner
parts of the unit without first having positioned the
system master switch to OFF.
It is forbidden to leave the packaging material within
the reach of children as it can be a source of risk.
Do not vent R-410A into atmosphere: R-410A is
a fluorinated greenhouse gas, covered by Kyoto
Protocol, with a Global Warming Potential (GWP) =
1975.
Disposal
Fundamental safety rules
This symbol on the product or its packaging
indicates that the appliance cannot be treated
as normal sanitary trash, but must be handed
in at a collection point for recycling electric and
electronic appliances.
Your contribution to the correct disposal of this
product protects the environment and the health
of your fellow men. Health and the environment
are endangered by incorrect disposal.
Further information about the recycling of this product can
be obtained from your local town hall, your refuse collection
service, or in the store at which you bought the product.
This regulation is valid only in EU member states.
• The equipment can be identified through:
- Packaging plate.
Shows the identification data of the equipment.
- Characteristics plate.
Affixed to the machine, it contains the technical data
and performance of the equipment. If lost or damaged,
request another from the Technical Assistance Service
.
Tampering with, removal and deterioration of
the identification plates makes any installation,
maintenance and the request for spare parts difficult.
Machine identification
Packaging plate
Characteristics plate
Some parts of the appliance generate heat during operation.
The installation room must guarantee adequate ventilation
and proper heat dispersion.

6
S
I
U
1.3
A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
A
M
L
N
C
D
E
FI
H
Q
O
P
R
G
B
EN
GENERAL INFORMATION
Ehpocageo, the range of heat pumps designed to heat,
cool and produce domestic hot water in a modern,
independent manner and at a low cost.
The ehpocageo heat pumps use the constant temperature
of the ground, through coils or geothermal probes, to
extract and transfer energy to the ground.
The DC Inverter technology allows great power regulation
precision to be achieved with maximum efficiency even
at partial loads. The latest generation ehpocageo inverter
board allows for total correction of the power factor
SMART CONTROL UNIT
The electronic Smart Control is entirely and exclusively
made for ehpocageo, and controls and optimises all
operating aspects of the system.
LOCAL ZONES CLIMATE CONTROL
Ehpocageo connects to peripheral boards that allow total
zone climate control (summer and winter temperature
and relative humidity). All information is transmitted
from the individual boards to the central unit for the
water temperature to be adjusted. In this way, perfect
thermoregulation is balanced with energy saving.
TOUCH SCREEN THERMOSTAT
Each zone controlled by ehpocageo is served by an
advanced chronothermostat-type touch screen with the
temperature and relative humidity sensor on board.
GEO-SOLAR FUNCTION
The exclusive geo-solar function is an example of using
renewable sources, which sees that exchange occurs via
the geothermal probes if the solar panels are at a lower
temperature than that required by the domestic hot water
circuit and the heating system.
FREE COOLING FUNCTION
Another important function is that of free cooling, in which
the cooling compressor is off, while the circulation pumps
circulate the water directly between the geothermal probes
and the system.
EhpocaGEO System
SSPM compressor power drivers
CAP capacitor
Control panel
MCU Main Board
DC Compressor
Disposal exchanger
IND Inductance
System exchanger
De-superheater
Free-cooling valve V5
System pump MP2
Free-cooling valve V6
DHW pump MP4
Disposal pump MP3
Solar/DHW recovery valve V1
Solar/geothermal recovery valve V7

7
S
I
U
1.4
Scambiatore
impianto
Scambiatore
smaltimento
De-surriscaldatore
PR1
DM2
DM1
V4
DC
COMPR.
TM4
TM2
SL
TM6
PR2
FILT
LR
EEV
EN GENERAL INFORMATION
• The structure is made of thick galvanised epoxy
painted sheet metal. The panels of the compressor
compartment are made totally soundproof with
high sound absorption plates. The compressor and
hydraulic compartments and the electric panel are
accessed via the removable front panel.
• All the models are equipped with hermetic TWIN
ROTARY INVERTER DC type compressors, which are
controlled by exclusive TOTAL PFC circuit boards,
thereby allowing for the exact energy required by
the actual demand of the building to be supplied
precisely, guaranteeing maximum efficiency even at
partial loads. Furthermore, this technology eliminates
high peak currents, which are typical in ON/OFF
compressors.
The compressor is mounted on rubber supports to
eliminate any vibration.
• The heat exchangers are plate-type, made of AISI
316 stainless steel and coated with a closed cell anti-
condensate material.
• The electronic expansion valve is made of fine
materials (AISI 316L and engineering polymers), and
thanks to the adjustment being controlled by the
same circuit board that controls the compressor,
guarantees proportional modulation that can stabilise
and maintain appliance operation constant in very
short times, allowing significant energy savings
compared to other solutions.
• The refrigerant circuit is entirely made of copper and
insulated with a closed-cell foam pipe and works with
environmentally friendly R410A refrigerant. The circuit
is complete with: a bi-flow dehydrator filter, a cycle
reversing valve, high and low pressure switches, a
pressure transducer to control the condensation and
evaporation in the water-run versions only, and a low
pressure transducer used to control the overheating
of the electronic expansion valve.
Description of the appliance
• The hydraulic circuit of the appliance is divided into
the primary system heat exchanger, the disposal heat
exchanger (geothermal or water-run) and the high
temperature de-superheater for DHW use.
The heat exchanger intended for the primary system
can produce hot or cold water (also with the free-
cooling function, in which the cooling compressor is off
and a pump circulates the water directly between the
geothermal probes and the system, thereby lowering
the internal temperature with the power consumption
very close to zero thanks to the presence of two
specific 3-way valves, V5 and V6) through a heat
exchanger with a large surface area and low pressure
drops and has an A class high head inverter circulation
pump (up to 12m of water column) and a water flow
verification device (differential pressure switch).
The disposal heat exchanger also has a dedicated
heat exchanger and the geothermal version has an A
class high head inverter circulation pump (up to 12m
of water column), while the water-run disposal version
includes the two-way modulating valve. Through the
specific 3-way V7 valve it can implement the exclusive
geo-solar function, which during poor insolation
periods in winter regenerates the geothermal probes
(which are normally at a temperature close to 0°C -
thereby improving the COP significantly) and recovers
the heat from the solar tank. The water flow verification
device (differential pressure switch) is present in both

8
S
I
U
1
6
2
9
7
4
4
5
3
3
Scambiatore
impianto
Scambiatore
smaltimento
Scamb.
geotermico
MP2
MP3
MP4
V6
0
1
V5
0
1
DI2
TI25
TI27
V9
TI23
TI26
V7
0
1
V1
10
TI20
TI21 DI1
TI22
TI24
De-surriscaldatore
8
10
Wall DSP
LCD
Key
LED
CAN
Vcc
RH
BUZ
ID EE
Zone MCU
0-10 R1
RH
TI
CANVcc
LED
ID
TI
EE
21
P1a
Zona 1a
P1c
P1b
Zona 1c
Zona 1b
20
MV1a
MV1c
MV1b
TI16a
RH1a
TI13a
RH1c
RH1b
TI16c
TI16b
TI13b
TI10c
TI10b
TI10a
TI13b
TI
TI
TI
TI
R1
DI DI
R1
R1 R2
R2
$%
%
$
$%
%
$
$%
%
$
EN
GENERAL INFORMATION
• The electrical panel is placed in a box with a
high protection rating at the front of the hydraulic
compartment and is mounted on a pivoting support,
which allows all the internal parts to be fully accessible.
The power circuit is separate from the control circuit
and its performance complies with the EN60204-1
Standards. The core of the system is the electronic
Smart Control, which is entirely and exclusively made
for ehpocageo, controls and optimises all the functions
of the appliance, and the entire system thanks to
specific EP0637 control units interconnected via
CANbus:
up to 16 EP0638 programmable zone thermostats,
individually equipped with temperature and humidity
sensors (for the dew point in cold surface systems to
be adjusted) and can drive each pump and modulating
valves dedicated to the area;
cases.
By means of an oversized heat exchanger, the
DHW de-superheater allows water to be produced
at a high temperature (up to 60°C) with total energy
recovery during normal appliance operation, whereby
the system is heated or cooled, has an A class high
head inverter circulation pump (up to 8m of water
column) and a 3-way V1 valve, which allows the heat
of the water to be recovered from the solar tank while
keeping the compressor off.
There are also 3 different valves to drain the water
totally or partially from the circuits and a system
hydronic pressure gauge.
Water GEO
DHW Tank
Solar Tank
System tank
System Tank
Well or ground
water

9
S
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U
1
2
13
12
21
20
Serb. impianto
R2a
R2b
R2c
V3


TI6
TI5
CaldaiaP2
V2
Serb. solare
R3
14
15 Collettore solare
MP1
DI5
TI1
TI3
EV3
11
TI2
Stufa
Serb. sanitario
P4
R1
Piscina
TI4
TI9
TI8
EN GENERAL INFORMATION
DHW Tank
Zones
System
exchanger
Solar
Tank
• control unit for the EP0639 cold/hot system tank
with specific temperature sensors, P2 solar/system
recovery pump control, an R2 3-stage support
resistance, if present, and a boiler with a 3-way V3
valve, if present, for system/DHW deviation;
• Furthermore, the electronic Smart Control performs
intelligent management of the different energy sources
depending on availability, performance and costs of
use, always giving priority to renewable sources.
• EP0641 solar system control unit with temperature
sensors, an MP1 modulating pump, an EV3
overheating valve and an R3 support resistance, if
present;
• EP0640 DHW circuit control unit with temperature
sensors, an MV5 modulating mixing valve, a V8 anti-
legionella overheating drain valve, an R1 support
resistance, if present, and pool heating function with a
specific P1 pump.

10
2.1
2.2
2.3
INSTALLATION
The appliance is only to be placed in a vertical position, and
the packages stored in a closed environment protected
from the elements.
Do not stack more than two appliances.
Do not turn the package upside down.
The packaging is made of suitable materials to protect the
machine from stress during transport and handling.
The units are delivered complete and in perfect
condition, however, please comply with the following
warnings to check the quality of the transport services:
- upon receipt, check if the package is damaged and
if so, accept the goods with reservations and keep
photographic evidence of any damage found.
- unpack and check the contents against the packing
list.
- check that none of the parts have been damaged
during shipment. In case of damage, report it to
the shipping company within 3 days of receipt by
registered letter with return receipt and attaching
photographic documentation.
A copy should also be sent by fax to INNOVA. No
notice of damage will be accepted after 3 days from
delivery.
Any dispute will be settled by the Court of TRENTO.
The unit must only be handled by qualified personnel,
who are adequately equipped and with specific tools
for the weight and dimensions of the appliance at the
bottom. When using a forklift, insert the forks into the
openings of the base. Avoid dangerous situations if
you use a hoist to lift the appliance. When using ropes
or chains, check that they are in good condition, of
adequate capacity and approved in accordance with
the safety regulations in force in the place of installation.
When the load is lifted from the ground, keep away from
the area below and around it. Avoid laying the product or
placing it in a horizontal position during transport. In fact,
the cooling compressor is mounted on vibration dampers
and may cause the compressor or the connection pipes
to shift out of their seats.
Keep the packing at least for the whole length of warranty
should you need to ship the appliance to the service
centre for repair.
It is forbidden to dispose of and leave the packing
materials (cardboard, staples, plastic bags, etc.) within
the reach of children as they could be a source of
danger.
Storage
Receipt and unpacking
The location of the appliances should be specified by
the system designer or the person in charge and must
consider both the purely technical requirements as well as
any applicable local legislation.
• The unit is supplied with vibration dampers already
installed
• Place the unit on a perfectly level supporting surface.
Make sure that the supporting surface can support the
weight of the appliance .
Positioning the unit

11
U.M. 8M - 12M 16M 16T - 22T
H mm 1710 1710 1710
L mm 530 530 530
P mm 470 470 470
mm 157 173 173
L
H
P
2.4
H1 mm 500
L1 mm 500
L2 mm 20
W1 mm 300
L2
L1
W1
W1
H1
Dimensions U.M.
Dimensions
Weight when transported
• The installation must allow authorised and skilled
personnel to intervene easily if maintenance is required,
complying with the safety distances between the units
and other equipment as well as the technical spaces
indicated in the table.
Receipt and unpacking
Functional spaces
Dimensions

12
2.5
A
B
C
BCB
C
A
Carefully follow the instructions given in this manual for the
installation to be successful and the operating performance
to be optimal. Failure to apply the mentioned regulations,
which may cause the equipment to malfunction, relieve
INNOVA from any form of warranty and any liability for
damage caused to persons, animals or objects. It is
important for the electrical system to be set up according
to the regulations in force, in compliance with the data
provided in the Technical data chapter and for it to have a
proper earthing system. The appliance must be installed in
such a way as to facilitate maintenance (full front access),
as well as the air vent valves (inertial tank and pipes) being
accessed by simply removing the front panel.
Installation method
Door
Plastic lateral guards
Fastening screws
- Remove the plastic side guards (ref. B).
- Unscrew the two fastening screws (ref. C) of the
control panel.
- Remove the inspection panel forcing it towards you
- The upper panel can be removed by simply forcing it
towards the front
- The side panels can be removed by unscrewing the
3 front screws and lifting the panel until it is released
from the rear sliding hooks.
Panel opening: front, upper and lateral

13
11"
21"
31"
41"
51"
61"
71"
81"
91"
10 1"
2.6
1 4 3 6 5 8 7 9102
The choice and installation of components is decided by
the installer, who must operate in compliance with good
workmanship and current legislation. Before connecting
the pipes, ensure they are free from stones, grit, rust,
debris or any foreign bodies that may damage the system.
It is good practice to create a by-pass in the system so
that the appliance does not have to be disconnected in
order to wash the plate heat exchanger.
The connecting pipes must be supported, so that their
weight does not rest on the appliance.
The hydraulic connections should be completed by
installing:
- air relief valves at the highest points of the pipes;
- flexible elastic joints;
- on/off valves.
The hydraulic connections can be set up either facing the
wall (thereby hiding them under the upper panel) or facing
upwards by removing the pre-cut sheet metal part on the
panel.
The nominal minimum diameter of the connection
pipes must be 1”. To allow the maintenance and
repair operations it is indispensible that each hydraulic
connection is fitted with respective manual closing
valves.
The maximum pressure losses allowed are those defined
in the technical data paragraph.Should more head be
necessary due to high pressure loss in the system an
external pump must be added with relative inertial vessel.
The distribution pipes for the cooled water must be
adequately insulated with expanded polyethylene or similar
material with a thickness of at least 13mm.
Even the interception valve, the curves and union joints must
be adequately insulated.
To avoid pockets of air inside the circuit we strongly
recommend including automatic or manual breather
devices in all points (high pipes, siphons etc) where air can
accumulate.
If the mains water pressure is more than 3 bar, install a
pressure reducer on the supply.
The unit is supplied with three sieve filters with 0.5 mm links.
Install them on the water inlets pipeline of the unit (return from
the system).
Hydraulic connections
Flow to the system
Return from the system
Flow to the disposal
Return from the disposal
Flow to the solar panels for the system
Return from the solar panels for the system
Flow to the solar panels for DHW
Return from the solar panel for DHW
Flow to the boiler
Return from the boiler

14
S
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2.7
TI5
MV1a
P1a
P1b
TI10a
TI13a
a
b
MV1b
TI10b
TI13b
V3
V2
TI24 TI25
TI6
TI1
TI2
TI3 MP1
P4
TI9
TI4
P2
1
3
4
6
5
2
7
8
V9
1 2 3 4 5 6 7 8 DI1 DI2 EV3 MP1 MP2 MP3 MP4 MV1a MV1b P1a
P1b P2 P4 TI1 TI10a TI10b TI13a TI13b TI2 TI3 TI4 TI5 TI6 TI9 TI20 TI21 TI22 TI23
TI24 TI25 TI26 TI27 V1 V2 V3 V5 V6 V7 V9
EN
GENERAL INFORMATION
General system diagram
System tank Solar tank DHW tank Power supply Automatic fill-up valve Water supply WATER GEO System exchanger flow switch Disposal exchanger flow switch Solar system drain valve Solar system modul. pump System pump Disposal pump (GEO only) DHW pump Zone a mixing valve Zone b mixing valve Zone a circulation pump
Zone b circulation pump Solar/system recovery pump Pool heating pump Solar manifold water temperature probe Zone a input water temperature probe Zone b input water temperature probe Zone a output water temperature probe Zone b output water temperature probe Solar tank high temperature probe Solar tank low temperature probe DHW tank high temperature probe DHW tank high temperature probe System tank low temperature probe DHW tank high temperature probe System exchanger output water System exchanger input water Disposal exchanger output water Disposal exchanger input water
Geothermal exchanger output water temperature probe (GEO only) Geothermal exchanger input water temperature probe (GEO only) Desuperheater output water Desuperheater input water Solar/DHW recovery valve Solar/system recovery valve System/DHW boiler water diversion valve Free-cooling valves Free-cooling valves Solar/geothermal probes recovery valve (GEO only) Eva./Cond. water modulating valve (WATER only)

15
S
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1
R3
6
9
7
4
5
3
Scambiatore
impianto
Scambiatore
smaltimento
P1a
Zona 1a
P1c
P1b
Zona 1c
Zona 1b
Collettore solare
P4
R2a R2b
R2c
MV1a
MV1c
MV1b
MP2
MP3
MP4
MP1
V3
1 0
V5
0 1
TI13a
TI6
TI13c
TI10c
TI10b
TI10a
TI13b
TI1
DI2
TI25
TI27
TI3
TI23
TI26
TI5
EV3
R1
Piscina
V7
0 1
V9
11
V1
10
TI4
TI9
TI8
TI2
TI20
TI21 DI1
TI22
Caldaia P2
AB
B
A
AB
B
A
AB
B
A
V2
Stufa
TI24
De-surriscaldatore
8
10
V6
0 1
2
1 2
3
7
8
ehpocaGEO
EN GENERAL INFORMATION
Other parts of the system

16
2.8
2.9
2.10
0 -5 -10 -15 -20
0 12% 20% 28% 35%
1 0,974 0,985 0,98 0,97
1 1,02 1,04 1,075 1,11
1 1,07 1,11 1,18 1,22
Storage tanks
Filling the system
Appropriate water storages should be installed in the system,
solar and DHW circuits for the installation to be correct.
The system circuit must guarantee minimum water content
of 10 litres per kW of heat output through an inertial tank. A
content of 30 litres per kW is recommended in any case to
optimise the efficiency at partial loads.
Once the hydraulic connections have been completed the
system will have to be filled. It will then be necessary to
simultaneously release the air from the inside of the pipes
and device itself.
During these operations, the machine must be
disconnected from the mains power supply.
If an external auxiliary pump is used it must also be
switched off.
The working pressure of the system must not exceed
1.5bar with the pump switched off. To check any possible
leaks from the system when setting up we suggest you
increase the test pressure and then reduce it successively
it to reach the working pressure.
Once all the electrical connections have been made and
the circulation pump is activated, check that there are
no pockets of air in the system. If this happens, stop the
pump, release the air and re-start, repeating the procedure
until it is all cleared. To avoid dangerous cavitations that
could damage the pump and make the entire system
less efficient, the inlet pressure with the pump switched
on must not be less than 0,6 bar, measurable with the
manometer on the device.
Ethylene glycol solution
Data
Ethylene glycol percentage in weight
Cooling capacity correction factor
Flow rate correction factor
Pressure drop correction factor
In the case of possible freezing, empty the system and
introduce an antifreeze liquid in a proportion that is appropriate
for the minimum temperatures that can be reached.
Solutions of water and ethylene glycol used as heat-transfer
liquids in place of water cause a reduction in the performance
of the unit and pumps. Add a maximum of 35% of ethylene
glycol (protection equivalent to as low as -20°C) to the water.

17
S
I
U
2.11
H max
H
H min
Hs
Q
H max
H
H min
Hs
Q
Hs
1
/
2
EN INSTALLATION
Setting the circulation pump
The appliance has high efficiency wet rotor circulation
pumps suitable for all heating and air-conditioning
systems with a temperature range from -10°C to +110°C
that, due to the use of specific synchronous motors - with
permanent magnet rotors adjusted by an A class inverter
- guarantee energy savings of up to 80% when compared
to standard pumps.
Furthermore, the control electronics guarantee the
automatic adjustment of performances to the changing
operating conditions of the hydraulic system.
A regulator is present on the front part of the pump body
that allows for the selection of the maximum pump head,
based on the effective system requirement, and for that
of the operating mode with variable heads Δp-v (set by
default) in which the electronic system varies the head
developed by the pump between the set value and half of
this upon the varying of the water flow rate or the constant
head mode Δp-c where the pressure difference
generated by the pump is kept constant at a set value
throughout the admitted flow rate range.
The maximum head value of the heating/cooling MP2
system pump should be set with the potential of the
compressor at 100%, with all the dispensing valves
open and the utilities turned on, verifying the temperature
difference between the system flow and return (TI20 and
TI21), which must be between 4 and 7°C, querying the
user menu.
The maximum head value of the disposal MP3 pump
should be set with the potential of the compressor at 100%
and all probe field valves open, verifying the temperature
difference between the geothermal exchanger flow and
return (TI24 and TI25), which must be between 2 and 4°C,
querying the user menu.
The maximum head value of the DHW MP4 pump should
be set with the potential of the compressor at 100%,
verifying the temperature difference between the system
flow and return (TI26 and TI27), which must be between 4
and 7°C, querying the user menu.
Variable head Δp-v Constant head Δp-c

18
S
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U
2.12
Hst (kPa)
50
60
70
80
90
10
0
110
1,51,6 1,71,8 1,922,12,2 2,32,4 2,52,6 2,72,8 2,933,13,2 3,33,4
Q (m3/h)
Hst (kPa)
40
50
60
70
80
90
10
0
110
1,51,6 1,71,8 1,922,12,2 2,32,4 2,52,6 2,72,8 2,933,13,2 3,33,4 3,53,6 3,73,8 3,9
Q (m3/h)
Hst (kPa)
30
40
50
60
70
1,51,6 1,71,8 1,922,12,2 2,32,4 2,52,6 2,72,8 2,93
Q (m3/h)
EN
INSTALLATION
Residual useful head/flow rate diagrams
Performance with controlled pumps to maximum mode
Prevalence constant.
System pump 8M-12M (MP2)
Disposal pump 8M-12M (MP3)
DHW pump 8M-12M (MP4)

19
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Hst (kPa)
50
60
70
80
90
10
0
11
0
2,52,6 2,72,8 2,933,13,2 3,33,4 3,53,6 3,73,8 3,944,14,2 4,34,4 4,54,6 4,74,8 4,
95
Q (m3/h)
Hst (kPa)
40
50
60
70
80
90
10
0
110
2,52,6 2,72,8 2,933,13,2 3,33,4 3,53,6 3,73,8 3,944,14,2 4,34,4 4,54,6 4,74,8 4,955,15,2 5,35,4
Q (m3/h)
Hst (kPa)
30
40
50
60
70
2 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9 3 3,1 3,2 3,3 3,4 3,5 3,6 3,7 3,8 3,9 4
Q (m3/h)
EN INSTALLATION
System pump 16 - 22 (MP2)
Disposal pump 16 - 22 (MP3)
DHW pump 16 - 22 (MP4)

20
S
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6,5 ÷ 7,8
µS/cm 250 ÷ 800
°F 5 ÷ 20
ppm 0,2
ppm < 0,05
ppm < 250
2.13
2.14
EN
INSTALLATION
Upon initial start-up, the specialized technician will have
to obtain the reference values of the system’s water using
appropriate test kits.
If the total hardness is above 20°F or some of the make-
up water reference values are not within the indicated limits,
contact our pre-sales service to determine the treatments to
be used.
Bore or groundwater not from water supply system should
always be carefully analysed and if necessary treated with
appropriate systems. If installing a softener, in addition to
following the manufacturer’s guidelines, adjust the hardness
of the outlet water to no lower than 5°F (also run pH and
salinity tests) and check the concentration of chlorides at
outlet after regeneration of resins.
Reference values of system’s water
pH
Electric conductivity
Total hardness
Total iron
Manganese
Chlorides
Sulphur ions absent
Ammonium ions absent
Water-run disposal circuit
Before emptying, make sure that the shut-off valves of the
heat pump and the top-up valves are closed.
Remove the drain cap, connect a drain pipe and open the
vent valves.
If the liquid contains a percentage of ethylene
glycol, make sure that this is not disposed of in the
environment; collect it in a container for it to be reused.
System drain
The disposal circuit in this version has a 2-way modulating
valve, driven directly by the Smart Control, which based
on the condensing/evaporation pressure value detected
by the transducer PR2, allows the inflow to the heat
exchanger of the amount of water that is necessary for the
system to be adjusted correctly so as to minimise power
consumption and maximise performance.
The KV of valve V9 is used:
Kv (m3/h con Δp = 100kPa = 1bar) = 32
The general equation (valid for water or fluids that are
technically similar) to calculate the pressure drop, knowing
the flow rate value, is as follows: