K18 Hybrigas EASY Indoor Installation, Use and

Installation, Use and Maintenance
Manual
K18 Hybrigas EASY Indoor
Hybrid system with gas absorption heat pump and
condensing boiler for heating and buffer tank domestic hot
water production suitable for installation inside a technical
room
nominal thermal power 37,9 kW
nominal thermal power for DHW 23,5 kW
Revision: A
Code: D-LBR836
This Installation, use and maintenance manual has been drawn up and printed by Robur S.p.A.; whole or partial reproduction of this
Installation, use and maintenance manual is prohibited.
The original is filed at Robur S.p.A..
Any use of this Installation, use and maintenance manual other than for personal consultation must be previously authorised by Robur S.p.A..
The rights of those who have legitimately filed the registered trademarks contained within this publication are not affected.
With the aim of continuously improving the quality of its products, Robur S.p.A. reserves the right to modify the data and contents of this
Installation, use and maintenance manual without prior notice.


INDEX OF CONTENTS
IIntroduction����������������������������������������������������������������������������� p. 4
I.1Recipients.�������������������������������������������������������������������������� p. 4
I.2
Control device.������������������������������������������������������������������ p. 4
II Symbols and definitionsp����������������������������������������������� p. 4
II.1
II.2
Key to symbols ����������������������������������������������������������������� p. 4
Terms and definitions ���������������������������������������������������� p. 4
IIIWarnings.������������������������������������������������������������������������������������� p. 4
III.1
General and safety warnings�������������������������������������� p. 4
III.2Conformity������������������������������������������������������������������������ p. 6
III.3
Exclusions of liability and warranty�������������������������� p. 6
1 Features and technical data�������������������������������������� p. 7
1.1Features.������������������������������������������������������������������������������ p. 7
1.2Dimensions.����������������������������������������������������������������������� p. 9
1.3
Connection plate detail.���������������������������������������������� p. 10
1.4Components.������������������������������������������������������������������� p. 11
1.5
Electrical wiring diagram.������������������������������������������� p. 18
1.6
Electronic board.������������������������������������������������������������ p. 20
1.7
Operation mode.������������������������������������������������������������ p. 21
1.8Controls.���������������������������������������������������������������������������� p. 21
1.9
Technical characteristics.��������������������������������������������� p. 22
2 Transport and positioning���������������������������������������� p. 24
2.1Warnings.�������������������������������������������������������������������������� p. 24
2.2Handling.��������������������������������������������������������������������������� p. 24
2.3
Installation premises.���������������������������������������������������� p. 25
2.4
Minimum clearance distances.��������������������������������� p. 26
2.5
Mounting base.��������������������������������������������������������������� p. 26
3 Heating engineer��������������������������������������������������������������� p. 26
3.1Warnings.�������������������������������������������������������������������������� p. 26
3.2Installation.����������������������������������������������������������������������� p. 26
3.3
Hydraulic connections.������������������������������������������������ p. 29
3.4
Anti-icing function.������������������������������������������������������� p. 30
3.5
Anti-icing liquid.������������������������������������������������������������� p. 30
3.6
System water quality.��������������������������������������������������� p. 30
3.7
Installation filling.���������������������������������������������������������� p. 31
3.8
Boiler safety valve drain ducting connection.����� p. 32
3.9
Fuel gas supply.�������������������������������������������������������������� p. 32
3.10 Combustion products exhaust �������������������������������� p. 32
3.11 Flue gas condensate discharge �������������������������������� p. 33
3.12 Defrosting water drainage ����������������������������������������� p. 34
3.13 Safety valve drain ���������������������������������������������������������� p. 34
3.14 Air ducting ����������������������������������������������������������������������� p. 34
4 Electrical installer�������������������������������������������������������������� p. 35
4.2
4.3
4.4
4.5
4.6
4.7
Electrical systems.���������������������������������������������������������� p. 35
Electrical power supply.����������������������������������������������� p. 36
Control system.��������������������������������������������������������������� p. 36
Alarm indicator lamp.��������������������������������������������������� p. 38
Remote the board error reset.����������������������������������� p. 38
Temperature probes.���������������������������������������������������� p. 38
5 First start-up�������������������������������������������������������������������������� p. 39
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Preliminary checks.�������������������������������������������������������� p. 39
How to access the boiler.�������������������������������������������� p. 40
Heat pump combustion parameters check.��������� p. 40
Boiler combustion parameters check.�������������������� p. 41
Setting parameters for heat pump first start-up
��������������������������������������������������������������������������������������������� p. 42
Setting parameters for boiler first start-up.���������� p. 45
Anti-legionella service settings.�������������������������������� p. 46
Settings depending on the primary circuit
water pump type���������������������������������������������������������� p. 46
6 Normal operation�������������������������������������������������������������� p. 47
6.1Warnings.�������������������������������������������������������������������������� p. 47
6.2
Switch on and off.���������������������������������������������������������� p. 47
6.3
Messages on the heat pump display.��������������������� p. 47
6.4
On-board electronic controls – Menus and
parameters of the GHP10 board������������������������������ p. 48
6.5
Modifying heat pump settings.�������������������������������� p. 48
6.6
Restarting a locked-down unit.�������������������������������� p. 50
6.7
Messages on the boiler display.�������������������������������� p. 50
6.8
Boiler module heating temperature setting.������� p. 51
6.9
DHW temperature setting.����������������������������������������� p. 51
6.10Efficiency �������������������������������������������������������������������������� p. 51
7Maintenance�������������������������������������������������������������������������� p. 52
7.1Warnings.�������������������������������������������������������������������������� p. 52
7.2
Pre-emptive maintenance.����������������������������������������� p. 52
7.3
Scheduled routine maintenance.����������������������������� p. 53
7.4
Periods of inactivity.������������������������������������������������������ p. 53
7.5
Temporary stop command of the fan.�������������������� p. 53
8Diagnostics������������������������������������������������������������������������������ p. 54
8.1
8.2
8.3
Heat pump board codes.��������������������������������������������� p. 54
Boiler board codes.�������������������������������������������������������� p. 56
Water pump alarm codes of heat pump module
��������������������������������������������������������������������������������������������� p. 57
9Appendices����������������������������������������������������������������������������� p. 58
9.1
Product fiche.������������������������������������������������������������������ p. 58
4.1Warnings.�������������������������������������������������������������������������� p. 35
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
3
I
Introduction
IINTRODUCTION
Manual
▶▶
▶▶
This Manual is an integral part of the
K18 Hybrigas EASY Indoor unit and must be handed to
the end user together with the appliance.
I.1RECIPIENTS
This Manual is intended for:
▶▶
nd user, for appropriate and safe use of the appliance;
e
qualified installer, for correct appliance installation;
planner, for specific information on the appliance.
I.2CONTROL DEVICE
In order to work, the K18 Hybrigas EASY Indoor unit requires a
control device to be connected by the installer (see Paragraph
1.8 p. 21).
IISYMBOLS AND DEFINITIONS
II.1KEY TO SYMBOLS
DANGER
WARNING
NOTE
PROCEDURE
REFERENCE (to other document)
II.2TERMS AND DEFINITIONS
Appliance / Unit = equivalent terms, both used to refer to the
hybrid gas absorption group.
TAC = Technical Assistance Centre authorised by Robur.
External request = generic control device (e.g. thermostat, timer or any other system) equipped with a voltage-free NO contact
and used as control to start/stop the unit.
Ambient chronothermostat OCDS007 = control device to control a K18 Hybrigas EASY Indoor appliance.
OQLT019 system controller = control system to control a
K18 Hybrigas EASY Indoor appliance and one or more heating
circuits.
GUE (Gas Utilization Efficiency) = efficiency index of gas heat
pumps, equal to the ratio between the thermal energy produced and the energy of the fuel used (relative to LCV, lower
calorific value).
First Switch-On = appliance commissioning operation which
may only and exclusively be carried out by a TAC.
GHP10 Board = electronic board on the unit, to control all functions and to provide interface with other devices and with the
user.
IIIWARNINGS
III.1GENERAL AND SAFETY WARNINGS
Installer's qualifications
Installation must exclusively be performed by a Qualified
Firm and by Skilled Personnel, with specific knowledge
on heating, cooling, electrical systems and gas appliances, in compliance with the laws in force in the Country of
installation.
Declaration of Conformity
Upon completing installation, the installing firm shall
issue to the owner/client the appliance's Workmanlike
Conformity Declaration, according to national/local regulations in force and the manufacturer's instructions/
provisions.
Misuse
The appliance must only be used for the purposes for
which it has been designed. Any other use is deemed
hazardous. Incorrect use may affect operation, duration
and safety of the appliance. Adhere to the manufacturer's
4
instructions.
Use of the appliance by children
The device can be used by children over 8 years old,
and by people with reduced physical, sensory or mental
capabilities, or lack of experience or knowledge, only if
they are under surveillance or after they have received
instructions regarding safe use of the appliance and understanding the dangers inherent in it. Children should
not play with the appliance. Cleaning and maintenance
that must be performed by the user must not be performed by unsupervised children.
Hazardous situations
„„ D
o not start the appliance in hazardous conditions, such
as: gas smell, problems with the plumbing/electrical/gas
system, parts of the appliance under water or damaged,
malfunctioning, disabling or bypassing control and safety devices.
„„ In case of danger, request intervention by skilled personnel.
„„ In case of danger, switch off the electrical power and gas
supplies only if this can be done in total safety.
III
Warnings
„„ D
o not entrust children, persons with physical, sensory
or mental disabilities or persons with poor knowledge
and experience with use of the appliance.
Gas component tightness
„„ B
efore performing any operation on gas ducting components, close the gas cock.
„„ Upon completing any procedure, perform the tightness
test according to regulations in force.
Gas smell
„„
„„
„„
„„
If you smell gas:
Do not use electrical devices such as telephones, multimeters or other equipment that may cause sparks next
to the appliance.
Shut off the gas supply by turning the cock off.
Disconnect electrical power supply by means of the
external isolation switch in the power supply electrical
panel.
Use a telephone away from the appliance to ask for intervention from skilled personnel.
Poisoning
„„ E nsure the flue gas ducts are tightness and compliant
with the regulations in force.
„„ Upon completing any procedure, ensure components
are tightness.
„„ For electrical connections exclusively use compliant
components and according to the specifications provided by the manufacturer.
„„ Ensure the appliance cannot be accidentally switched
back on.
Earthing
Electrical safety depends on effective earthing system,
correctly connected to the appliance and installed according to the regulations in force.
Distance from combustible or flammable materials
„„ D
o not store flammable materials (paper, solvents, paint,
etc.) in the vicinity of the appliance.
Limescale and corrosion
Depending on the chemical/physical properties of the
system water, limescale or corrosion may damage the
appliance (Paragraph 3.6 p. 30).
„„ Check system sealing.
„„ Avoid frequent top-ups.
Chloride concentration
The concentration of chlorides or free chlorine in the
system water must not exceed the values in Table
3.2 p. 31.
Aggressive substances in air
Moving parts
The appliance contains moving parts.
„„ D
o not remove guards during operation, and in any case
prior to disconnecting the power supply.
Burn hazard
Halogenated hydrocarbons containing chlorine and fluorine compounds cause corrosion. The air of the installation site must be free from aggressive substances.
Acid flue gas condensate
The appliance contains very hot parts.
„„ D
o not open the appliance and do not touch internal
components before the appliance has cooled down.
„„ Do not touch the flue gas exhaust before it has cooled
down.
Pressure vessels
The appliance has a sealed circuit classified as pressure vessel, the tightness of which is tested by the
manufacturer.
„„ Do not carry out any intervention on the sealed circuit or
on the appliance's valves.
Water-ammonia solution
The unit uses the ammonia-water absorption cycle. The
water-ammonia solution is contained in the tightness
circuit. The solution is harmful for health if it is ingested,
inhaled or comes in contact with the skin.
„„ In the event of coolant leak keep away and disconnect
the power and gas supply (only if it is possible to do so
with no danger).
„„ Request assistance from the TAC.
Electrocution hazard
„„ D
isconnect the electrical power supply before any work/
procedure on appliance components.
„„ D
ischarge the acid condensate of combustion flue gas,
as indicated in Paragraph 3.11 p. 33, in compliance
with current exhaust regulations.
Switching the appliance off
Disconnecting the power supply while the appliance
is running may cause permanent damage to internal
components.
„„ Except in the event of danger, do not disconnect the
power supply to switch off the appliance, but always
and exclusively act through the control device provided
(OQLT019, OCDS007, or external request).
In the event of failure
Operations on internal components and repairs may
exclusively be carried out by a TAC, only using original
parts.
„„ In the event of failure of the appliance and/or breakage
of any component, do not attempt to repair and/or restore and immediately contact the TAC.
Routine maintenance
Proper maintenance assures the efficiency and good operation of the appliance over time.
„„ Maintenance must be performed according to the
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
5
III
Warnings
manufacturer's instructions (see Chapter 7 p. 52) and
in compliance with current regulations.
„„ Appliance maintenance and repairs may only be entrusted to firms legally authorised to work on gas appliances
and systems.
„„ Enter into a maintenance contract with an authorised
specialised firm for routine maintenance and for servicing in case of need.
„„ Only use original parts.
Decommissioning and disposal
If the appliance is to be disposed of, contact the manufacturer for its disposal.
Keep the Manual
This "Installation, Use and Maintenance Manual" must always accompany the appliance and must be handed to
the new owner or installer in the event of sale or removal.
III.2CONFORMITY
EU Directives and standards
The absorption heat pumps of the K18 series are certified as
conforming to standard EN 12309 and comply with the essential
requirements of the following Directives:
▶▶ 2009/142/EC "Gas Appliances Directive" as amended and
added.
▶▶ 2014/30/EC "Electromagnetic Compatibility Directive" as
amended and added.
▶▶ 2014/35/EC "Low Voltage Directive" as amended and added.
▶▶ 2006/42/EC "Machine Directive" as amended and added.
▶▶ 2014/68/EU "Pressure Equipment Directive" as amended
and added.
▶▶ 811/2013/EU "Energy Related Products Directive" as amended and added.
▶▶ 813/2013/EU "Ecodesign requirements regulation" as
amended and added.
▶▶ 92/42/EEC "Efficiency Directive" as amended and added.
▶▶ 2009/125/EC "Eco-design Directive" as amended and added.
▶▶ 2010/30/EC "Energy labelling" as amended and added.
Furthermore, they comply with the requirements of the following standards:
▶▶ UNI EN 677 Specific requirements for condensing boilers
with nominal heating capacity up to 70 kW.
▶▶ EN 378 Refrigerating systems and heat pumps.
▶▶ UNI EN 483 Type C gas appliances with nominal thermal capacity not greater than 70 kW.
Other applicable provisions and standards
The design, installation, operation and maintenance of the systems shall be carried out in compliance with current applicable
regulations, depending on the Country and location, and in accordance with the manufacturer's instructions. In particular, regulations regarding the following shall be complied with:
▶▶ Gas systems and equipment.
▶▶ Electrical systems and equipment.
▶▶ Heating and air conditioning systems, and heat pumps.
▶▶ Environmental protection and combustion products exhaust.
▶▶ Fire safety and prevention.
▶▶ Any other applicable law, standard and regulation.
6
III.3EXCLUSIONS OF LIABILITY AND
WARRANTY
Any contractual or extra-contractual liability of the manufacturer for any damage caused by incorrect installation and/or improper use and/or failure to comply with
regulations and with the manufacturer's directions/instructions shall be disclaimed.
In particular, the warranty on the appliance may be rendered void by the following conditions:
„„ I ncorrect installation.
„„ M
isuse.
„„ F ailure to comply with the manufacturer's indications on
installation, use and maintenance.
„„ Alteration or modification of the product or any part
thereof.
„„ Extreme operational conditions or however outside of
the operational ranges set forth by the manufacturer.
„„ Damages caused by external agents such as salts, chlorine, sulphur or other chemical substances contained in
the installation water or present in the air of the installation site.
„„ Abnormal actions transmitted to the appliance by the
plant or installation (mechanical stresses, pressure, vibrations, thermal expansion, electrical surges...).
„„ Accidental damages or due to force majeure.
1
Features and technical data
1FEATURES AND TECHNICAL DATA
The K18 Hybrigas EASY Indoor is composed by a K18 heat pump
module and by a condensing boiler module.
▶▶
▶▶
▶▶
1.1FEATURES
1.1.1Characteristics of heat pump module
▶▶
▶▶
▶▶
▶▶
enerator limit thermostat, with manual reset;
g
flue gas temperature thermostat, with manual reset;
sealed circuit safety relief valve;
by-pass valve, between high and low pressure circuits;
flame control board
gas solenoid valve with double shutter;
antifreeze function for water circuit;
condensate discharge obstruction sensor.
peration
O
The K18 Hybrigas EASY Indoor heat pump is based on the thermodynamic water-ammonia absorption cycle (H20–NH3), and
produces hot water using outdoor air as a renewable energy
source (cold source) and natural gas as primary energy.
The thermodynamic cycle takes place within a hermetically
sealed circuit, in welded construction, perfectly tight, factory-tested, which does not require any maintenance or coolant
top-ups.
▶▶
Mechanical and thermo-hydraulic components
▶▶ steel sealed circuit, externally treated with epoxy paint;
▶▶ sealed combustion chamber suitable for indoor installations;
▶▶ burner equipped with ignition and flame detection device,
controlled by an electronic controller;
▶▶ titanium stainless steel shell-and-tube water exchanger;
▶▶ stainless steel, flue gas latent heat recovery exchanger;
▶▶ air exchanger with finned coil, with steel pipe and aluminium fins;
▶▶ automatic microprocessor-controlled finned coil automatic
defrosting valve;
▶▶ circulation pump.
Mechanical and thermo-hydraulic components
▶▶ integrated spiral single tube stainless steel heat exchanger;
▶▶ modulating premix burner with 1:9 ratio;
▶▶ automatic air purging valve;
▶▶ high efficiency modulating water pump;
▶▶ system drain cock;
▶▶ heat circuit temperature probe;
▶▶ condensate drain siphon;
▶▶ diverter valve for DHW production.
Control and safety devices
▶▶ GHP10 electronic board with microprocessor, display and
selection keys;
▶▶ installation water flowmeter;
1.1.2Characteristics of condensing boiler module
peration
O
The K18 Hybrigas Easy Boiler is the condensing boiler module
integrating the K18 heat pump and it provides for the DHW production of by means of a remote DHW buffer tank, as well as
the thermal power for space heating integrating the heat pump
when required.
Control and safety devices
▶▶ flue safety thermal fuse;
▶▶ 3 bar safety valve;
▶▶ gas solenoid valve;
▶▶ safety thermostat;
▶▶ expansion tank;
▶▶ water differential pressure switch.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
7
1
Features and technical data
1.1.3Control of the two heat generators
A control system has been designed for the
K18 Hybrigas EASY Indoor unit, called Armonia, which allows
integration between the heat pump module and the condensing boiler module (auxiliary boiler) that compose the
K18 Hybrigas EASY Indoor unit, to be managed as optimally as
possible in order to provide the best performance in terms of
comfort and energy efficiency.
Specifically, as shown in Figure 1.1 p. 8 below, various cases
are possible:
A. very low load: active auxiliary boiler in modulation and
heat pump off (replacement at a particularly mild outdoor
temperature)
low load: active heat pump in modulation and auxiliary boiler off
average/high load: active heat pump at full power and active
auxiliary boiler in modulation (integration)
high load: maximum power for the operating condition to
be reached quicker (integration)
very high load: heat pump out of the operating limits and
auxiliary boiler that autonomously covers the design load
(replacement at low ambient temperature)
B.
C.
D.
E.
Figure 1.1 Armonia control system diagram
100%
E
PL
R
h(T
D
j) [%
]
A
B
C
0%
20°C
Tj [°C]outdoor temperature
PLRh(Tj) [%]plant partial load ratio at outdoor temperature Tj
A Heat pump off. Active auxiliary boiler in modulation.
B Active heat pump in modulation. Auxiliary boiler off.
In the presence of a minimal thermal demand (scenario A), the
minimum power of the heat pump could still be excessive in
comparison to the demand. In this case it may be advantageous
to use only the auxiliary boiler (replacement mode).
In the presence of low thermal demand (scenario B), only the
heat pump will be active in modulation mode, whereas the auxiliary boiler will be off.
As the thermal demand increases (scenario C), the heat pump
reaches full power and, if the thermal load still cannot be fulfilled, it will activate the auxiliary boiler, which will run in modulation mode. The heat pump will still remain active and at full
power, and therefore the power of the auxiliary boiler will be
added to that of the heat pump (integration mode).
When the thermal demand is high (scenario D), for example
while the system reaches operating conditions, the heat pump
and auxiliary boiler will run at maximum power, reducing the
necessary time for the operating conditions to be reached and
ensuring the optimal comfort even in harsher environmental
conditions.
If the heating system design require the water temperature to be higher than the maximum that can be
dispensed by the heat pump, in high thermal demand
conditions (scenario E), the auxiliary boiler can be activated as its replacement. In this type of application the
8
C
D
E
Tj
ctive heat pump at full power. Active auxiliary boiler in modulation.
A
Active heat pump at full power. Active auxiliary boiler at full power.
Heat pump off. Active auxiliary boiler at full power.
maximum thermal load of the building must be at most
equal to the power of the auxiliary boiler and not to the
sum of the power of the two appliances (replacement
mode).
The auxiliary boiler can therefore be operated in four ways (see
also Paragraph 5.5.5 p. 44):
▶▶ inactive (the auxiliary boiler does not intervene in any way);
▶▶ emergency (the auxiliary boiler is only activated when there
is an alarm on the heat pump module);
▶▶ integration (active auxiliary boiler as necessary for integration of the thermal power of the heat pump module, scenarios B, C, and D);
▶▶ integration and replacement (just like in the integration
mode, with the addition that in particular environmental
conditions, the heat pump can be deactivated and only the
auxiliary boiler operates, scenarios A and E).
1
Features and technical data
1.2DIMENSIONS
Figure 1.2 Dimensions K18 Hybrigas Indoor
L
I
A
C
J
K
D
B
G
M
H
E
A
B
C
D
E
F
G
Front panel
Left panel
Electrical connection input
Heat pump flue gas exhaust outlet Ø 80 mm
Flue gas condensate and defrosting water drain Ø 20 mm
Flue gas condensate and defrosting water discharge conveyor
Boiler display transparent cover, which can be detached to access the user
interface keys
H
I
J
K
L
M
F
B oiler reset/unlock button
Heat pump display transparent cover, which can be detached to access
the user interface keys
Heat pump reset/unlock button
Safety valve drain duct fitting 1 1/4"
Fan air expulsion ducting flange
Coil air input ducting flange
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
9
1
Features and technical data
Figure 1.3 K18 Hybrigas Indoor cover detail
A
1.3CONNECTION PLATE DETAIL
Figure 1.4 Connection plate detail
A Heating water outlet connection Ø 3/4" M
B Heating water inlet connection Ø 3/4" M
C DHW outlet connection Ø 3/4" M (1/2" M for K18 Hybrigas READY)
D DHW inlet connection Ø 3/4" M (1/2" M for K18 Hybrigas READY)
EDHW buffer tank temperature probe passage (only for K18 Hybrigas
EASY)
FBoiler module safety valve discharge pipe passage
GGas connection Ø 3/4" M
10
oaxial boiler air-fumes duct connection Ø
C
60/100
1
Features and technical data
1.4COMPONENTS
Figure 1.5 LH front view
A
B
C
A
B
C
eat pump module
H
Boiler module
DHW temperature probe
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
11
1
Features and technical data
Figure 1.6 LH front view heat pump module internal components
6
7
1
5
3
10
9
8
4
2
1
2
3
4
5
12
F an
Flame sensing / ignition electrodes
PT1000 flue exhaust temperature probe
Limit thermostat
Defrosting valve
6
7
8
9
10
T A outdoor temperature probe
Teva evaporator temperature probe
Heat pump module delivery temperature probe
Components box
Circulation pump
1
Features and technical data
Figure 1.7 Heat pump module internal components rear view
9
1
10
3
2
5
7
11
4
6
8
1
2
3
4
5
6
Safety valve
Flowmeter
Heat pump module flue gas exhaust
Condensate discharge
Condensate level sensor
Water outlet connection Ø 3/4" M
7
8
9
10
11
ater inlet connection Ø 3/4" M
W
Return temperature probe
120 °C flue gas thermostat
Safety valve drain ducting
Condensate drain siphon
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
13
1
Features and technical data
Figure 1.8 RH front view heat pump module internal components
5
1
7
2
3
1
2
3
4
14
Gas valve
Combustion blower
Ignition transformer
Oil pump
4
5
6
7
6
T G generator temperature probe
Electrical panel
TGV probe
1
Features and technical data
Figure 1.9 LH side view
A
C
B
A
B
C
B oiler module coaxial air-fumes duct connection
Heat pump module flue gas exhaust outlet
Socket for boiler flue gas analisys
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
15
Features and technical data
Figure 1.10 Detail of water pipes connection between boiler module and connection plate
A Heating water outlet pipe
B Heating water inlet pipe
C DHW outlet pipe
D DHW inlet pipe
GGas pipe
SSpace heating water delivery temperature probe
VBoiler module safety valve drain ducting pipe
(to be fitted by the installer)
16
1
1
Features and technical data
Figure 1.11 K18 Simplygas Indoor flanges detail
2
1
1
2
F an air expulsion ducting flange, supplied with the appliance, to be fitted by the installer
Coil air input ducting flange, supplied with the appliance and already fitted
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
17
1
Features and technical data
1.5ELECTRICAL WIRING DIAGRAM
Figure 1.12 Heat pump module wiring diagram
SCHGHP10 electronic board
CNTBOXFlame controller
BLWBlower
PMWater pump
PMPOil pump
IGNTRIgnition transformer
IGNIgnition electrodes
FLSFlame sensor
LSGas valve ON indicator lamp
GVGas solenoid valve
18
TCManual flue gas thermostat
TLGenerator limit thermostat
FMFlowmeter
CWSCondensate water sensor
VDDefrosting valve
FANFan
THMCHot water flow temperature
probe
THRCHot water return temperature
probe
TAAmbient air temperature sensor
TGGenerator temperature sensor
TEVAEvaporator outlet temperature
sensor
TGVGas valve probe
TFPT1000 flue gas temperature
probe
REEDOil pump rotation sensor
1
Features and technical data
Figure 1.13 Boiler module wiring diagram
MP
VD
OAL +AL 0 +10
gi
ve
bi
PM
ma
gi-ve
N
bl
L
TR
ma
ce
ne
ce
ma
ma
1
3
gr
ro
ER
ma
4
ce
ma
ce
3
2
1
5
6
M8
7
8
10
9
11
M4
EA
M10
Tra
SRi
M15
68
67
66
65
64
63
62
ma
ce
ma
gi
bi
ce
ma
16
17
M16
VG
ce
13
14
15
61
60
59
58
57
gr
ma
12
M2
M14
M9
ar
ar
ma
ce
M12
27
26
31
30
29
28
M7
M5
ce
ma
ma
ce
37
36
35
34
33
32
M13
44
43
42
41
40
39
38
56
55
54
53
52
51
EV
+24V
HS
PWM
GND
TF
TS
SR
SS
SE
Pacq
ERDetection electrode
EAIgnition electrode
PMModulating water pump
VGGas valve
TRAIgnition transformer
TRTransistor
SRiSystem return probe
SSDHW buffer tank probe
TSSafety thermostat
PacqWater pressure switch
EVBlower
SRSpace heating probe
TFFlue gas thermofuse (102 °C)
SEConnector for optional outdoor
temperature probe
MPControl panel terminal block
VDDiverter valve
LLine
NNeutral
neBlack
gi-veGreen-yellow
blBlue
roRed
ceLight blue
maBrown
arOrange
giYellow
biWhite
grGrey
veGreen
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
19
1
Features and technical data
Figure 1.14 Detail of connection between heat pump module electrical panel and boiler module electrical panel
A
B
eat pump module electric panel
H
Boiler module electric panel
1.6ELECTRONIC BOARD
The appliance's electrical panel contains:
▶▶ Electronic Board GHP10 with microprocessor, it controls the
appliance and displays data, messages and operative codes.
The appliance is monitored and programmed by interacting
with the display and selection keys (Figure 1.15 p. 20). The
display is accessible from the right side of the unit (detail I
Figure 1.2 p. 9).
Figure 1.15 GHP10 board display
A
B
C
D
E
F
20
Display
Left selection key
Right selection key
Enter / Access menu key
RS232 connector
Chimney sweep function for heat pump module
1
▶▶
Features and technical data
ondensing boiler electronic board; it controls the boiler
C
and displays data, messages and operative codes related to
the boiler itself. The display is accessible from the left side of
the unit (detail G Figure 1.2 p. 9).
Figure 1.16 Boiler control panel
6
1
5
2
1
2
3
4
5
6
3
4
eating temperature adjustment keys
H
INFO key: press once to view the temperatures and other informations - hold for 5 seconds, in off operating mode, to view the last 5 faults
Operating mode selection key: summer only / winter only / summer-winter / OFF
RESET key: faults reset - boiler module chimney sweep function activation (hold for 7 seconds)
Domestic hot water temperature adjustment keys / hold the keys at the same time for 5 seconds to activate display back lighting for 10 minutes
Display
1.7OPERATION MODE
The functioning mode of the appliance is set on modulating by
default, that is the thermal power output is adapted to the thermal load.
For any modifications contact the installer or the TAC.
1.8CONTROLS
Control device
The appliance may only work if it is connected to a control device, selected from:
▶▶ (1) OQLT019 system controller (optional)
▶▶ (2) OCDS007 ambient chronothermostat (optional)
▶▶ (3) external request
1.8.1Control system (1) with OQLT019
The OQLT019 controller is able to control one
K18 Hybrigas EASY Indoor unit and one or more heating circuits.
QLT019 system controller
O
The main functions are:
▶▶ control of one K18 Hybrigas EASY Indoor unit with variable
water setpoint according to heating curves;
▶▶ room comfort control by controlling two heating circuits, of
which one optionally of mixed type, or zone valve control;
control based on heating curves (one for each circuit) and
optionally influence by the installed room unit/s;
▶▶ parameter figures display and setting;
▶▶ hourly programming on a weekly basis on two temperature
levels (comfort, reduced);
nti-icing protection function
A
absence periods programming;
▶▶ diagnostics;
▶▶ reset errors.
For additional details and diagrams see OQLT019 controller
manual.
▶▶
▶▶
Using the optional ODSP030 expansion kit it is possible
manage up to three heating circuits, of which up to two
optionally mixed.
1.8.2Control system (2) with OCDS007
The OCDS007 chronothermostat is able to control a single
K18 Hybrigas EASY Indoor unit. In this case the water setpoint is either fixed or based on weather compensation, with
a single heating curve which is directly controlled by the
K18 Hybrigas EASY Indoor unit; as such, it can not be modified
from the OCDS007 device.
CDS007 ambient chronothermostat
O
The main functions are:
▶▶ room timer thermostat for hourly programming on a weekly
basis on various levels of room temperature;
▶▶ interfacing with the K18 Hybrigas EASY Indoor unit through
voltage-free request contact;
▶▶ reporting on the display of the device of the possible alarm
status of the K18 Hybrigas EASY Indoor unit.
For further information refer to OCDS007 manual.
1.8.3Control system (3) with external request
The appliance may also be controlled via generic enable devices
(e.g. thermostats, timer, buttons, contactors...) fitted with voltage-free NO contact.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
21
1
Features and technical data
This system allows for a control similar or equivalent to that of
the system (2), depending on the type of request device used;
also, in this case a water setpoint can be used, fixed or calculated
according to the climatic curve managed by the unit.
Using a commercially available device it is generally not possible
to obtain on the device a reporting of the unit alarm. In case,
refer to the Paragraph 4.5 p. 38 for the connection instructions
of a alarm status indicator lamp.
For connection of the selected device to the appliance's
electronic board please refer to Paragraph 4.4 p. 36.
1.9TECHNICAL CHARACTERISTICS
Table 1.1 K18 Hybrigas Easy 37/4 Indoor technical data
K18 Hybrigas Easy 37/4 Indoor
Heating mode
Seasonal space heating energy efficiency class
(ErP)
Operating point A7W50
Operating point A7W35
Heating capacity
Hot water delivery temperature
Hot water return temperature
Heating water flow
Ambient air temperature (dry bulb)
medium-temperature application (55 °C)
low-temperature application (35 °C)
thermal power
thermal power
nominal (1013 mbar - 15 °C)
real
minimum
maximum for heating
minimum temperature in continuous operation
nominal
maximum
minimum
DHW mode
Nominal thermal power for DHW at 20 °C ambient
Specific capacity in continuous operation - Δt 30°C
DWH delivery temperature
maximum for DHW
DHW inlet temperature
maximum for DHW
Electrical specifications
voltage
Power supply
type
frequency
Electrical power absorption
nominal
Degree of protection
IP
Installation data
methane G20 (nominal)
Gas consumption
G30 (nominal)
G31 (nominal)
type
Water fitting
thread
type
Gas connection
thread
Safety valve outlet channel fitting
diameter (Ø)
Fume outlet
residual head
diameter (Ø)
Boiler fume outlet
residual head
Maximum equivalent length of coaxial exhaust duct
Type of installation (heat pump)
type of installation
Type of installation (boiler)
type of installation
NOx emission class
width
Dimensions
depth
height
Weight
in operation
Sound pressure Lp at 5 metres (max)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
22
kW
kW
kW
kW
kW
°C
°C
l/h
°C
°C
A++
A+
36,6
37,9
29,4 (1)
34,9 (2)
2,9
65 (3)
25 (4)
2000
40
0
kW
l/min
°C
°C
23,5
20,0 (5)
80
80
V
50 Hz supply
kW
-
230
single-phase
50
0,48 (6)
25
m³/h
kg/h
kg/h
“G
“G
“G
mm
Pa
mm
Pa
m
mm
mm
mm
kg
dB(A)
3,10 (7)
2,29 (8)
2,27 (8)
M
3/4
M
3/4
1 1/4
80
70
100 (9)
100
10
B23P, B53P
C13, C33, C43, C53, C63, C83, C93
5
1452
795 (10)
1348
300
43,0 (11)
For operation in space heating mode only.
For space heating mode and combined production of DHW.
Value in combined operation. 80 °C for boiler only operation (half of the total available power).
In transient operation, lower temperatures are allowed.
10 minute peak collection of domestic hot water. The exact value depends on the performance of the DHW buffer tank.
Value stated without air ducting. ±10% according to the power supply voltage and tolerance on electrical motors consumption.
PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).
PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).
Coaxial flue gas exhaust 60/100.
Overall dimensions including the connection flange to the air ducting.
Sound pressure values in free field, with directionality factor 2, obtained from the sound power value in compliance with standard EN ISO 9614. Sound power Lw 65 dB(A) at maximum
ventilation, 62 dB(A) at minimum ventilation; sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.
1
Features and technical data
K18 Hybrigas Easy 37/4 Indoor
Sound pressure Lp at 5 metres (min)
Maximum water pressure in operation
Maximum condensation and defrosting water flow rate
Water content inside the apparatus
maximum head
Circulating pump data
residual pressure head at nominal flow rate
Expansion tank volume
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
dB(A)
bar
l/h
l
m w.c.
m w.c.
l
40,0 (11)
4
17,5
9
7,5
2,0
8
For operation in space heating mode only.
For space heating mode and combined production of DHW.
Value in combined operation. 80 °C for boiler only operation (half of the total available power).
In transient operation, lower temperatures are allowed.
10 minute peak collection of domestic hot water. The exact value depends on the performance of the DHW buffer tank.
Value stated without air ducting. ±10% according to the power supply voltage and tolerance on electrical motors consumption.
PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).
PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).
Coaxial flue gas exhaust 60/100.
Overall dimensions including the connection flange to the air ducting.
Sound pressure values in free field, with directionality factor 2, obtained from the sound power value in compliance with standard EN ISO 9614. Sound power Lw 65 dB(A) at maximum
ventilation, 62 dB(A) at minimum ventilation; sound power values detected in compliance with the intensity measurement methodology set forth by standard EN ISO 9614.
Table 1.2 Heat pump for K18 Hybrigas Indoor technical data
K18 Simplygas C1 Indoor
Heating mode
nominal (1013 mbar - 15 °C)
real
nominal
maximum
minimum
kW
kW
l/h
l/h
l/h
11,4
11,2
1000
2000
400
Electrical specifications
Electrical power absorption
Installation data
nominal
kW
0,39 (1)
Gas consumption
methane G20 (nominal)
GPL G30/G31 (nominal)
m³/h
kg/h
m³/h
Pa
1,20 (2)
0,87 (3)
4000
20 (4)
kg
kg
4,7
5,0
K18 Hybrigas
K18 Hybrigas EASY
K18 Hybrigas
READY
14,5
3,0
2,2
4,2
2,8
55
32
0,176
group 1°
14,5
3,0
2,2
4,2
2,8
55
32
0,176
group 1°
14,5
3,0
2,2
4,2
2,8
55
32
0,176
group 1°
Heating capacity
Heating water flow
Required air flow
Fan residual head
General information
ammonia R717
water H2O
Cooling fluid
(1)
(2)
(3)
(4)
Value stated without air ducting. ±10% according to the power supply voltage and tolerance on electrical motors consumption.
PCI (G20) 34,02 MJ/m³ (15 °C - 1013 mbar).
PCI (G30/G31) 46,34 MJ/kg (15 °C - 1013 mbar).
Value stated without air ducting.
Table 1.3 PED data (referred to heat pump)
PED data
generator
cooling volume transformer
absorber/condenser
cooling absorber solution
solution pump
Components under
pression
test pressure (in air)
maximum pressure of the cooling circuit
filling ratio
fluid group
l
l
l
l
l
bar g
bar g
kg of NH3/l
-
Table 1.4 Boiler for K18 Hybrigas EASY technical data
K18 Hybrigas Easy Boiler
Heating mode
Heating capacity
nominal (1013 mbar - 15 °C)
minimum
Operating point 80/60
Nominal thermal capacity
Operating point 50/30
Operating point Tr = 30 °C
Operating point Tr = 47 °C
Nominal thermal capacity
Thermal capacity 30%
Thermal capacity 30%
effective power
efficiency
efficiency
efficiency
efficiency
kW
kW
kW
%
%
%
%
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
18,0
2,9
17,6
98,0
105,5
107,5
101,2
23
2
Transport and positioning
K18 Hybrigas Easy Boiler
Heat loss
to jacket in operation
to jacket in operation
to flue in operation
to flue in operation
in off mode
in off mode
kW
%
kW
%
kW
%
0,02
0,10
0,38
2,10
0,045
0,25
****
nominal (1013 mbar - 15 °C)
minimum
kW
kW
23,5
2,9
m³/h
kg/h
kg/h
%
%
%
%
%
%
°C
kg/h
kg/h
ppm
1,90
1,42
1,40
9,44
11,10
10,20
9,04
10,50
10,05
73,7
28
5
41,0
Efficiency class
DHW mode
Heating capacity
Installation data
Gas consumption
methane G20 (nominal)
G30 (nominal)
G31 (nominal)
Nominal thermal capacity
Percentage CO2 in fumes
Minimal thermal capacity
Flue temperature
FUMES FLOW RATE
Nominal thermal capacity
Nominal thermal capacity
Minimal thermal capacity
G20
G30
G31
G20
G30
G31
G20
G20
G20
CO emission
2TRANSPORT AND POSITIONING
2.1WARNINGS
▶▶
Damage from transport or installation
The manufacturer shall not be liable for any damage during appliance transport and installation.
On-site inspection
▶▶
▶▶
▶▶
2.1 p. 24).
It is possible remove defrosting water and flue gas condensate discharge conveyor during handling to avoid damages
(reference F Figure 1.2 p. 9) using screws; reassemble the
discahrge conveyor when handling is ended.
Comply with safety regulations at the installation site.
Figure 2.1 Instruction for lifting
pon arrival at the site, ensure there is no transport damage
U
on packing, metal panels or finned coil.
After removing the packing materials, ensure the appliance
is intact and complete.
Packing
▶▶
▶▶
nly remove the packing after placing the appliance on site.
O
Do not leave parts of the packing within the reach of children (plastic, polystyrene, nails...) since they are potentially
dangerous.
Weight
▶▶
▶▶
T he lifting equipment must be suitable for the load.
Do not stand under suspended loads.
2.2HANDLING
Handling and lifting
▶▶
▶▶
▶▶
24
lways handle the appliance in its packing, as delivered by
A
the factory.
Use slings to lift the appliance.
Use to lifting beams to avoid damaging the outer panels, finned coil and defrosting water discharge (Figure
In the event of handling with forklift or pallet truck,
comply with the handling instructions shown on the
packing.
Pay attention to the unit centre of gravity position
(Figure 2.2 p. 25).
2
Transport and positioning
Figure 2.2 Unit centre of gravity position
▶▶
▶▶
▶▶
▶▶
▶▶
▶▶
place of installation regarding gas appliances and cooling
appliances;
any other gas appliances in the room must necessarily be
type C;
adequate opening must be provided for regular combustion
air flow to the heat pump, in accordance with current regulations;
the air ducts (details 2 and 3 in Figure 2.3 p. 25) must be
sized for the rated air flow (4000 m³/h), having available
head of 20 Pa (see Paragraph 3.14 p. 34);
the flue gas exhausts of all installed units must be ducted
to the outside, in accordance with current regulations (see
Paragraph 3.10 p. 32);
the outlet of the safety valve must be ducted outwards (see
Paragraph 3.13 p. 34;
the temperature inside the installation room must never
drop below zero.
Do not install inside a room that has no aeration openings.
2.3INSTALLATION PREMISES
Figure 2.3 p. 25 below shows an indicative positioning in case
of indoor installation.
The provisions that must be adopted in an indoor installation
are:
▶▶ the installation premises must meet all the requirements set
forth by laws, standards and regulations of the Country and
In order to favour the flow of air into and out of the finned coil
the K18 appliances in the version for indoor installation are
provided with connection flanges to facilitate these ducts (respectively on the back and front, see details L and M in Figure
1.2 p. 9).
The available data on residual head and required air flow rate are
shown in Table 1.2 p. 23.
Figure 2.3 K18 Simplygas/Hybrigas indoor version
4
5
6
7
2
1
3
B
A
1
2
3
4
K 18 Simplygas/Hybrigas indoor version (Indoor)
expelled air from the fan ducting
coil air input ducting
condensing boiler flue gas exhaust and air intake (coaxial pipe) (K18 Hybrigas only)
Defrosting water drainage
In winter, it is normal for frost to form on the finned coil
and for the appliance to perform defrosting cycles.
5
6
7
A
B
K 18 heat pump flue gas exhaust
K18 heat pump safety valve drain
heat pump combustion air flow opening
gas connection
heating/DHW system hydraulic connections
(and optionally neutralised, where required by applicable regulations) as well as the defrost water of the finned
coil. A collection tank with its drain pipe is set on the
back of the unit (see details E and F in Figure 1.2 p. 9).
„„ The condensation water of the fumes must be conveyed
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
25
3
Heating engineer
Acoustic issues
▶▶
Smooth disassembly of the air ducting must be ensured
on both the coil side and the expulsion fan side in order
to perform routine maintenance (and cleaning of the coil
itself ) and special maintenance.
re-emptively assess the appliance's sound impact inside
P
the room and to the next rooms and the outside.
2.4MINIMUM CLEARANCE DISTANCES
Distances from combustible or flammable materials
▶▶
eep the appliance away from combustible or flammable
K
materials or components, in compliance with applicable
regulations.
Clearances around the appliance
The minimum clearance distances shown in Figure 2.4 p. 26
(bar any stricter regulations) are required for safety, operation
and maintenance.
Figure 2.4 K18 Hybrigas Indoor minimum clearance distances - view
from above
A
B
C
D
2.5MOUNTING BASE
Flooring of the utilities room
▶▶
lace the appliance on a levelled flat surface made of fireP
proof material and able to withstand its weight.
Anti vibration mountings
Although the appliance's vibrations are minimal, resonance
phenomena might occur.
▶▶ Use vibration damper supports (available as optional features).
▶▶ Also provide anti-vibration joints between the appliance
and water and gas pipes.
1000 mm
600 mm
600 mm
1000 mm
3HEATING ENGINEER
3.1WARNINGS
General warnings
Read the warnings in Chapter III.1 p. 4, providing important information on regulations and on safety.
Compliance with installation standards
„„
„„
„„
„„
„„
Installation must comply with applicable regulations in
force, based on the installation Country and site, in matters of safety, design, implementation and maintenance
of:
heating systems;
cooling systems;
gas systems;
flue gas exhaust;
flue gas condensate discharge.
Installation must also comply with the manufacturer's
provisions.
26
3.2INSTALLATION
3.2.1Primary and secondary heating circuit
The K18 Hybrigas EASY Indoor appliance can operate in plants
with primary circuit only, or in plants with primary and secondary circuits with hydraulic separation: in the first case the water
pump managed by the K18 Hybrigas EASY Indoor unit ensures
water circulation also for the users; in the second case water circulation in heating circuits is ensured by dedicated water pumps.
With regard to the generation part, the layout must be set up as
shown in Figure 3.1 p. 27.
With regard to the heating distribution circuits, the solutions
described in Figures 3.2 p. 27, 3.3 p. 28, 3.4 p. 28 and
3.5 p. 29 are possible.
3.2.2Constant ot variable water flow
The K18 Hybrigas EASY Indoor unit may operate with constant
or variable water flow, according to electronic board settings
(Paragraph 5.8 p. 46).
System and components must be designed and installed
3
Heating engineer
consistently.
3.2.3Minimum water content
High thermal inertia is conducive to efficient appliance operation. Very short ON/OFF cycles are to be avoided.
A buffer tank (input on the top and output on the bottom) is
not strictly required but suggested in systems with low water
content in the primary circuit to ensure a minimum load during the periods of medium to low thermal demand. It is recommended in systems where the system water flow can be significantly reduced, and therefore, in the presence of:
▶▶ 2-way zone valves;
▶▶ thermostatic valves on radiators;
▶▶ heating circuits with several zones.
A capacity of 80/100 liters is usually adequate.
3.2.4Hydraulic diagrams
3.2.4.1K18 Hybrigas EASY Indoor hydraulic diagram
Figure 3.1 K18 Hybrigas Easy Indoor
D
10
C
E
F
8
ST
G
9
1
2
7
2
P
A
ST
3
4
6
5
B
1
2
3
4
5
6
7
8
h eat pump + condensing boiler K18 Hybrigas Easy 37/4 Indoor
modulating internal water pumps with available head of 2,0 m w.c.
anti-vibration connection
pressure gauge
separator filter
shut-off valve
GHP immersion temperature probe (standard) to be installed on heating
circuit (see Paragraph 3.2.4.2 p. 27)
DHW buffer tank, 150 liter (available as optional OSRB013)
9
10
A
B
C
D
E
F
G
immersion temperature probe (standard)
outdoor temperature probe (available as OSND007 optional)
gas connection
skylight well
ambient chronothermostat (available as OCDS007 optional)
condensing boiler flue gas exhaust and air intake (coaxial pipe)
K18 heat pump flue gas exhaust
K18 heat pump safety valve drain
heat pump combustion air flow opening
3.2.4.2Heating distribution
Direct heating distribution with single zone (system with primary water circuit only).
Figure 3.2 Heating distribution 01 - direct
1
2
HP immersion temperature probe (standard)
G
radiator
A
connection to K18 unit (GHP plant water temperature probe)
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
27
3
Heating engineer
Heating distribution with two zones controlled by 2-way valves (system with primary water circuit only).
Figure 3.3 Heating distribution 02 - system controller with two 2-way zone valves
B
1
2
5
C
3
4
5
6
7
A
B
7
6
C
HP immersion temperature probe (standard)
G
by-pass section with overpressure valve calibrated to open
only when both valves (3) are closed
2-way valve
radiator
system controller (required optional OQLT019)
advanced room unit (standard)
advanced room unit (available as optional ODSP005) or basic
room unit (available as optional ODSP004)
connection to K18 unit (GHP plant water temperature probe)
connection to K18 unit (heating service request). See system
controller manual
outdoor temperature probe connection
4
3
A
1
ST
2
Heating distribution with up to two heating circuits, one of which is optionally mixed and one not mixed (system with primary and
secondary water circuits).
Figure 3.4 Heating distribution 03 - system controller with a mixed heating circuit and a direct one
B
1
9
C
2
3
4
5
11
10
6
7
8
9
7
8
10
11
ST
6
5
A
2
1
ST
A
B
C
HP immersion temperature probe
G
(standard)
decoupling of primary/secondary circuits
(large cross-section pipe with T-connections
or a hydraulic separator)
shut-off valve
zone mixing valve
zone circulating pump (available as OPMP009/OPMP004 optional)
Immersion temperature probe (available as
OSND004 optional)
radiant panel
radiator
system controller (required optional
OQLT019)
advanced room unit (standard)
advanced room unit (available as optional
ODSP005) or basic room unit (available as
optional ODSP004)
connection to K18 unit (GHP plant water
temperature probe)
connection to K18 unit (heating service
request). See system controller manual
outdoor temperature probe connection
4
3
Heating distribution with up to three heating circuits, two of which are optionally mixed and one not mixed (system with primary
28
3
Heating engineer
and secondary water circuits).
Figure 3.5 Heating distribution 04 - system controller with two mixed heating circuits and a direct one
1
B
2
C
9
3
4
5
11
12
A
2
1
ST
6
7
8
9
10
8 11
7
ST
10
ST
6
12
5
A
B
4
C
HP immersion temperature probe
G
(standard)
decoupling of primary/secondary circuits
(large cross-section pipe with T-connections
or a hydraulic separator)
shut-off valve
zone mixing valve
zone circulating pump (available as OPMP009/OPMP004 optional)
Immersion temperature probe (available as
OSND004 optional)
radiant panel
radiator
System controller + expansion kit (required
optional OQLT019 + ODSP030)
advanced room unit (standard)
advanced room unit (available as optional
ODSP005) or basic room unit (available as
optional ODSP004)
advanced room unit (available as optional
ODSP005) or basic room unit (available as
optional ODSP004)
connection to K18 unit (GHP plant water
temperature probe)
connection to K18 unit (heating service
request). See system controller manual
outdoor temperature probe connection
3
3.2.5DHW circuit
Minimum components of heating plumbing circuit
The K18 Hybrigas EASY Indoor unit is set up to be connected to
a remote DHW buffer tank for the production of DHW. Connect
the hydraulic connections (see Figure 1.4 p. 10) to the DHW
buffer tank coil and insert the supplied water probe (detail C Figure 1.6 p. 12) in a DHW buffer tank well so that it can provide a
temperature representative of the water in the DHW buffer tank
itself.
Always provide, near the appliance:
— on water piping, both output and input (m/r)
▶▶ 2 antivibration joints on water fittings;
▶▶ 2 isolation ball valves;
— on the input water piping (r)
▶▶ 1 separator filter;
▶▶ 1 pressure gauge.
3.3HYDRAULIC CONNECTIONS
Heating system hydraulic connections
on the rear, at the bottom, connection plate (Figure 1.4 p. 10).
▶▶ A (= out) 3/4" M - WATER OUTLET (m = outlet to the space
heating system);
▶▶ B (= in) 3/4" M - WATER INLET (r = return from the space heating system).
DHW system hydraulic connections
on the rear, at the bottom, connection plate (Figure 1.4 p. 10).
▶▶ C (= out) 3/4" M - WATER OUTLET (m = outlet to the DHW
system);
▶▶ D (= in) 3/4" M - WATER INLET (r = return from the DHW system).
Hydraulic pipes, materials and features
▶▶
se pipes for heating/cooling systems, protected from
U
weathering, insulated for thermal dispersion.
Pipe cleaning
The K18 Hybrigas EASY Indoor appliance is equipped
with remote temperature probe (GHP), to be installed
by the installer on the delivery pipe to the plant, after
optional primary/secondary separation or buffer tank
(reference 1 Figure 3.2 p. 27, 3.3 p. 28, 3.4 p. 28,
3.5 p. 29).
Minimum components of DHW water circuit
Always provide, near the appliance:
— on water piping, both output and input (m/r)
▶▶ 2 antivibration joints on water fittings;
▶▶ 2 isolation ball valves;
▶▶ 1 DHW buffer tank, 150 liter (available as optional OSRB013),
or greater.
The K18 Hybrigas EASY Indoor unit is equipped with a
water temperature probe, factory wired inside the boiler
(detail C Figure 1.6 p. 12), which must be installed
by the installer on the DHW buffer tank (detail 9 Figure
3.1 p. 27). The probe comes with an 8 m long cable.
Cable extension should be avoided.
„„ B
efore connecting the appliance,accurately wash the
water and gas piping and any other system component,
removing any residue.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
29
3
Heating engineer
Water temperature probes
▶▶
Insert water temperature probe (GHP) and DHW buffer
tank probe in dedicated thermowells immersed in water flow, using thermal paste to ensure proper heating
transfer.
Refer to Paragrahp 4.7.1 p. 38 for details concerning
the electrical connection of the water temperature
probe.
▶▶
▶▶
▶▶
3.4ANTI-ICING FUNCTION
Active anti-icing self-protection
The appliance is equipped with an active antifreeze self-protection system to prevent icing. The anti-icing function (activated
by default) automatically starts the primary circulation pump
and, if required, the burner too, when the outside temperature
approaches zero.
Electrical and gas continuity
The active anti-icing self-protection is only effective if
the power and gas supplies are assured. Otherwise, anti-icing liquid might be required.
3.5ANTI-ICING LIQUID
caused by improper glycol use.
lways check product suitability and its expiry date with the
A
glycol supplier. Periodically check the product's preservation
state.
Do not use car-grade anti-icing liquid (without inhibitors),
nor zinc-coated piping and fittings (incompatible with glycol).
Glycol modifies the physical properties of water (density, viscosity, specific heat...). Size the piping, circulation pump and
thermal generators accordingly.
With automatic system water filling, a periodic check of the
glycol content is required.
With high glycol percentage (> 20…30%)
If the glycol percentage is ≥30% (for ethylene glycol) or
≥20% (for propylene glycol) the TAC must be alerted before first start-up.
When producing DHW by DHW buffer tank, use propylene glycol only.
Type of anti-icing glycol
Inhibited type glycol is recommended to prevent oxidation
phenomena.
Glycol effects
The Table 3.1 p. 30 shows, indicatively, the effects of using a
glycol depending on its %.
Precautions with glycol
The manufacturer disclaims any liability for any damage
Table 3.1 Technical data for filling the hydraulic circuit
GLYCOL %
10
15
20
25
30
35
40
WATER-GLYCOL MIXTURE FREEZING
TEMPERATURE
-3 °C
-5 °C
-8 °C
-12 °C
-15 °C
-20 °C
-25 °C
3.6SYSTEM WATER QUALITY
Responsibility of the user/operator/installer
The installer, operator and user must assure system water quality (Table 3.2 p. 31). Failure to comply with the manufacturer's
guidelines may affect operation, integrity and life of the appliance, voiding the warranty.
System water features
Free chlorine or water hardness may damage the appliance.
Adhere to the chemical-physical parameters in Table 3.2 p. 31
and the regulations on water treatment for residential and industrial heating systems.
30
PERCENTAGE OF INCREASE IN
PRESSURE DROPS
6,0%
8,0%
10,0%
12,0%
14,0%
16,0%
LOSS OF EFFICIENCY OF UNIT
0,5%
1,0%
2,0%
2,5%
3,0%
4,0%
3
Heating engineer
Table 3.2 Chemical and physical parameters of water
CHEMICAL AND PHYSICAL PARAMETERS OF WATER IN HEATING/
COOLING SYSTEMS
UNIT OF
PARAMETER
ALLOWABLE RANGE
MEASUREMENT
pH
/
> 7 (1)
Chlorides
mg/l
< 125 (2)
°f
< 15
Total hardness (CaCO3)
°d
< 8.4
Iron
mg/kg
< 0,5 (3)
Copper
mg/kg
< 0,1 (3)
Aluminium
mg/l
<1
Langelier’s index
/
0-0,4
HARMFUL SUBSTANCES
Free chlorine
mg/l
< 0,2 (3)
Fluorides
mg/l
<1
Sulphides
ABSENT
1
2
3
10.If, after the above operations, a decrease in system water
pressure is observed, open again the system filling cock until
the system pressure reaches 1,5 bar;
11.Repeat items 7, 8, 9 and 10 until the pressure has stabilised
(at least 1,5 bar).
Figure 3.6 Jolly valve on boiler circulating pump position
1
ith aluminium or light alloys radiators, pH must also be lower than 8 (in compliance
w
with applicable rules)
value referred to the maximum water temperature of 80 °C
in compliance with applicable rules
Water topping up
The chemical-physical properties of the system's water may alter
over time, resulting in poor operation or excessive topping up.
▶▶ Ensure there are no leaks in the installation.
▶▶ Periodically check the chemical-physical parameters of the
water, particularly in case of automatic topping up.
1
Cap of the jolly valve
Figure 3.7 Boiler pressure gauge position
Chemical conditioning and washing
▶▶
▶▶
▶▶
▶▶
▶▶
Water treatment/conditioning or system washing carried out carelessly may result in risks for the appliance,
the system, the environment and health.
Contact specialised firms or professionals for water treatment or system washing.
Check compatibility of treatment or washing products with
operating conditions.
Do not use aggressive substances for stainless steel or copper.
Do not leave washing residues.
Always refer to the requirements of the standards and existing regulations.
3.7INSTALLATION FILLING
How to fill up the system
After completing all water, electrical and gas connections:
1. Slightly loosen the cap of the jolly valve on the circulating
pump of the boiler module (at the bottom left inside the
boiler module) to release the air (detail 1 Figure 3.6 p. 31).
2. Slightly loosen the cap of the jolly valve placed on the top
right on the condensing block of the boiler module (Figure
3.8 p. 31) to release the air from the top.
3. Open the system filling cock and let out all the air.
4. Check with pressure gauge M (Figure 3.7 p. 31) that system pressure reaches 1,5 bar.
5. Open the automatic air purging valves on the system, if any,
and check the air purging process.
6. Make sure that the unit is powered electrically.
7. Send an operating request to the unit for a few seconds. The
circulating pump will be immediately activated.
8. Remove the request before the burner is activated. The circulating pump will continue to circulate the water for the
post-circulation time.
9. Check and clean the filter on the inlet pipe.
M
M
Pressure gauge
Figure 3.8 Jolly valve on boiler condensing block position
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
31
3
Heating engineer
3.8BOILER SAFETY VALVE DRAIN DUCTING
CONNECTION
The connection between the safety valve discharge and the connection plate of the boiler module is already provided inside the
boiler module.
The installer must provide the discharge hose from the 1/2" M
connection of the boiler module connection plate (detail V Figure 1.10 p. 16), which will cross the K18 Hybrigas EASY Indoor
unit connection plate through the appropriate free space (detail
F Figure 1.4 p. 10).
3.9FUEL GAS SUPPLY
Gas connection
and the gas piping.
Mandatory shut-off valve
▶▶
▶▶
rovide a gas shut-off valve (manual) on the gas supply line,
P
next to the appliance, to isolate it when required.
Perform connection in compliance with applicable regulations.
Gas pipes sizing
The gas pipes must not cause excessive load losses and, consequently, insufficient gas pressure for the appliance.
Supply gas pressure
The appliance's gas supply pressure, both static and dynamic,
must comply with Table 3.3 p. 32, with tolerance ± 15%.
3/4" M
on the rear, at the bottom, connection plate (Figure 1.4 p. 10).
▶▶ Install an anti-vibration connection between the appliance
▶▶
Non compliant gas pressure (Table 3.3 p. 32) may
damage the appliance and be hazardous.
Table 3.3 Gas network pressure
Gas supply pressure
Product
category
Countries of destination
G25 [mbar]
G30 [mbar]
G31 [mbar]
AL, BG, CY, CZ, DK, EE, FI, GR, HR, IT, LT, MK, NO, RO, SE, SI, SK, TR
20
30
30
AT, CH
20
50
50
AL, BG, CZ, ES, GB, HR, IE, IT, LT, MK, PT, SI, SK, TR
20
RO
20
II2ELL3B/P
DE
20
20
II2Esi3P
FR
20
25
II2HS3B/P
HU
25
II2E3P
LU
20
II2L3B/P
NL
II2E3B/P
PL
20
I2E(S)
BE
20
II2H3B/P
II2H3P
I3P
I2H
I3B
▶▶
30
50
50
37
30
30
50
50
50
37
37
25
BE
37
IS
30
20
30
MT
Vertical pipes and condensate
▶▶
37
25
LV
I3B/P
ertical gas pipes must be fitted with siphon and discharge
V
of the condensate that may form inside the pipe.
If necessary, insulate the piping.
LPG pressure reducers
With LPG the following must be installed:
▶▶ a first stage pressure reducer, close to the liquid gas tank;
▶▶ a second stage pressure reducer, close to the appliance.
3.10COMBUSTION PRODUCTS EXHAUST
Compliance with standards
The appliance is approved for connection to a combustion products exhaust duct for the types shown in Table
1.1 p. 22.
Flue gas exhaust connection
Heat pump module:
32
G20 [mbar]
30
30
80 mm (with gasket), on the rear, at the top (Figure
Ø
1.2 p. 9).
Boiler module:
▶▶ Coaxial flue gas exhaust 60/100. mm (with gasket), on the
unit cover (Figure 1.3 p. 10).
▶▶
The cover prevents water and/or foreign bodies entering the appliance before the flue gas exhaust duct is
installed. The cover should thus be removed only when
actually installing the flue gas exhaust duct on the appliance.
Combustion air intake fitting
Since the heat pump module of the K18 Hybrigas EASY Indoor
unit is of type B, it has no combustion air intake connection.
The combustion air is drawn directly from the installation room
through the casing.
Adequate opening must be provided for regular combustion air flow to the heat pump.
3
Heating engineer
Since the boiler module of the K18 Hybrigas EASY Indoor unit is
of type C, it has a dedicated air intake through the coaxial duct
connection.
Fume outlet
The fumes exhaust may be wall-mounted, but it can also be easily conveyed over the ridge of the roof because the residual head
allows the ducts to be extended by some tens meters, if the local
regulations require this.
The flue gas exhaust of the heat pump module (type B) is distinct
from that of the boiler module (type C), who is fitted with an
air/fumes coaxial duct connection that is independent from the
heat pump module (see Figure 1.3 p. 10).
The two distinct flue gas exhaust ducts must be anyway conveyed separately.
Table 3.4 p. 33 below shows the characteristics of the fume
outlet of the K18 Hybrigas EASY Indoor unit.
Table 3.4 Characteristics of K18 Hybrigas EASY Indoor flue gas exhaust
K18 Hybrigas
Easy 37/4
Indoor
Installation data
Type of installation
(heat pump)
type of installation
Fume outlet
diameter (Ø)
residual head
Type of installation
(boiler)
type of installation
diameter (Ø)
residual head
Maximum equivalent length of coaxial
exhaust duct
Boiler fume outlet
(1)
-
B23P, B53P
mm
Pa
mm
Pa
80
70
C13, C33, C43,
C53, C63, C83,
C93
100 (1)
100
m
10
-
Percentage CO2 in
fumes
Flue temperature
FUMES FLOW RATE
Nominal thermal
capacity
Minimal thermal
capacity
Nominal thermal
capacity
Nominal thermal
capacity
Minimal thermal
capacity
G20
G30
G31
G20
G30
G31
%
%
%
%
%
%
K18
Hybrigas
Easy Boiler
9,44
11,10
10,20
9,04
10,50
10,05
G20
°C
73,7
G20
kg/h
28
G20
kg/h
5
For each of the flue gas exhausts to be realized:
▶▶ The flue must be designed, sized, tested and constructed by
a skilled form, with materials and components complying
with the regulations in force in the country of installation.
▶▶ For the heat pump module, always provide a socket for flue
gas analysis, in an accessible position. The condensing boiler
module already has it (detail C Figure 1.9 p. 15).
For the design of the coaxial discharge of the boiler module, Table 3.4 p. 33 reports the maximum equivalent length of the
60/100 coaxial duct.
In any case you must consider that:
▶▶ the equivalent length of a 60/100 coaxial elbow at 90° is
equal to 1 m;
▶▶ the equivalent length of a 60/100 coaxial elbow at 45° is
equal to 0,6 m;
▶▶ the maximum equivalent length of coaxial exhaust duct corresponds to the sum of the lengths of the linear pipe and
the equivalent one of each curve in addition to the first one.
Coaxial flue gas exhaust 60/100.
In case of flue gas discharge to the roof, use a Tee at the
base of the vertical pipe, with proper condensate drain,
provided with siphon, to be connected to a suitable discharge manifold.
Table 3.5 p. 33 below shows the characteristics of the combustion products of the heat pump module.
Table 3.5 Characteristics of K18 Simplygas combustion products
K18
Percentage CO2 in fumes
Nominal thermal
capacity
G20
G30
G31
%
%
%
9,00 (1)
10,50 (2)
10,00 (3)
G20
G30
G31
°C
°C
°C
60,0
60,0
60,0
G20
G30
G31
kg/h
kg/h
kg/h
19
19
21
diameter (Ø)
residual head
mm
Pa
B23P, B53P
80
70
Flue temperature
Nominal thermal
capacity
3.11FLUE GAS CONDENSATE DISCHARGE
The K18 Hybrigas EASY Indoor unit is a condensing appliance
and therefore produces condensation water from combustion
flue gases.
Condensate acidity and exhaust regulations
FUMES FLOW RATE
Nominal thermal
capacity
Installation data
type of installation
Fume outlet
(1) 8,8 ÷ 9,2.
(2) 10,3 ÷ 10,7.
(3) 9,8 ÷ 10,2.
Table 3.6 p. 33 below shows the characteristics of the combustion products of the condensing boiler module.
Table 3.6 Characteristics of K18 Hybrigas EASY boiler combustion
products
K18
Hybrigas
Easy Boiler
▶▶
The flue gas condensate contains aggressive acid substances. Refer to applicable regulations in force for condensate exhaust and disposal.
If required, install an acidity neutraliser of adequate capacity.
Do not use gutters to discharge the condensate
Do not discharge the fume condensate in gutters, due to
the risk of materials corrosion and ice formation.
Flue gas condensate connection
The connection for flue gas condensate discharge is located on
the rear of the appliance (reference E in Figure 1.2 p. 9).
▶▶ The condensate discharge pipe must be connected to a suitable discharge manifold.
▶▶ The junction between the pipe and the manifold must remain visible.
Installation data
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
33
3
Heating engineer
Flue gas condensate discharge manifold
To make the condensate drain manifolds:
▶▶ Size the ducts for maximum capacity (maximum condensation and defrosting water flow rate) (Table 1.1 p. 22).
▶▶ Use plastic materials resistant to acidity pH 3-5.
▶▶ Provide for min. 1% slope, i.e. 1 cm for each m of the length
(otherwise a booster pump is required).
▶▶ Prevent icing.
▶▶ Dilute, if possible, with domestic waste water (e.g. bathrooms, washing machines, dish washers...), basic and neutralising.
Charging the siphon
harging the heat pump module siphon
C
Robur uses condensate collection siphons with float, which
blocks the passage of fumes and odours deriving therefrom
in case the equipment remains turned off for a long time and
the liquid contained in the siphon evaporates or in case of
commissioning.
Thanks to this system, it is not necessary to fill the siphon at
commissioning.
harging the boiler module siphon
C
To prevent an initial discharge of combustion products from the
condensate drain, charge the siphon itself before activating the
boiler.
For charging the siphon proceed as follows (Figure 3.9 p. 34):
1. unscrew the T cap and fill three quarters of the S siphon with
water;
2. screw the T cap back in.
Figure 3.9 Boiler condensate drain siphon
Do not install any shut off device on the exhaust duct
between the safety valve and the outside exhaust.
Safety valve drain ducting
The exhaust ducting shall be made in steel pipes (do not use
copper or its alloys). Table 3.7 p. 34 provides sufficient criteria of pipe sizing; alternatively, less compelling sizing is accepted, provided it is compliant with specific applicable norms (the
manufacturer cannot be held liable).
Table 3.7 Safety valve drain ducting
Diameter
1” 1/4
2”
DN
32
50
Maximum length (m)
30
60
The exhaust duct must have an initial straight section of
at least 30 cm.
Place the drain terminal outside the room, away from
doors, windows and aeration vents, and at such a height
that any coolant leaks cannot be inhaled by any people.
3.14AIR DUCTING
Flanges assembly
The fan air expulsion ducting flange is supplied with the appliance and should be fitted by the installer.
The coil air input ducting flange is supplied with the appliance
and is already fitted.
Sizing the air duct
TCap
PDischarge pipe
3.12DEFROSTING WATER DRAINAGE
Defrosting
In winter, frost may form on the finned coil and the appliance performs defrosting cycles.
The defrosting water drain is located below the finned coil itself
(see reference E in Figure 1.2 p. 9).
3.13SAFETY VALVE DRAIN
The safety valve drain must be obligatorily ducted outside. Failure to comply with this provision jeopardises
first switch on.
34
Set up the air ducting, which must have its input toward the
finned coil and output from the fan of the K18 unit, using a traditional sufficiently smooth sheet metal duct.
The insulation of the duct must be assessed in order to avoid
excessive production of condensate, especially if a duct of over
one metre in length must be set up.
The following should be provided for:
▶▶ intake and air outlet grilles (it is not strictly required to use a
filter because of the high pressure drops associated with the
presence of the filter itself );
▶▶ intake and air outlet channels easily removable for maintenance;
▶▶ anti-vibration bellows at the connections to the flanges provided on the K18 units.
For the pressure drops consider indicatively the following:
▶▶ 0.1 Pa/m for a straight smooth sheet metal duct, with a
600x1000 mm cross-section (dimensions of the air intake
duct);
▶▶ 1 Pa/m for a straight smooth sheet metal duct, with a 450x450
mm cross-section (dimensions of the air outlet duct);
▶▶ 3 Pa for every curve having a 450x450 mm cross-section at
90°, ratio R/D ≥ 1.5;
▶▶ 0.5 Pa for every curve having a 600x1000 mm cross-section
at 90°, ratio R/D ≥ 1.5;
▶▶ 5 Pa for every intake or expulsion grille (pay particular attention to the pressure drops when choosing the grille, considering the rated air flow equal to 4000 m³/h).
Figure 3.10 p. 35 below shows an example of air ducting.
4
Electrical installer
Figure 3.10 Example of K18 Indoor air ducts - plan view
1m
A
600 x 1000 mm
A
1m
450 x 450 mm
90°
R/D ≥ 1,5
1m
450 x 450
mm
A
Anti-vibration bellows removable for maintenance operations
4ELECTRICAL INSTALLER
4.1WARNINGS
▶▶
General warnings
Read the warnings in Chapter III p. 4, providing important information on regulations and on safety.
Compliance with installation standards
Installation must comply with applicable regulations in
force, based on the installation Country and site, in matters of safety, design, implementation and maintenance
of electrical systems.
(occasional black outs are tolerated).
To turn the appliance on and off, exclusively use the suitably
provided control device.
4.2ELECTRICAL SYSTEMS
Electrical connections must provide:
A. power supply (Paragraph 4.3 p. 36);
B. control system (Paragraph 4.4 p. 36);
C. alarm indicator lamp (if there is no optional system controller, Paragraph 4.5 p. 38);
D. unit error reset remote (if there is no optional system controller, Paragraph 4.6 p. 38);
E. temperature probes (Paragraph 4.7 p. 38).
Installation must also comply with the manufacturer's
provisions.
Live components
▶▶
fter placing the appliance in the final position, and prior
A
to making electrical connections, ensure not to work on live
components.
Earthing
▶▶
▶▶
T he appliance must be connected to an effective earthing
system, installed in compliance with regulations in force.
It is forbidden to use gas pipes as earthing.
Cable segregation
Keep power cables physically separate from signal ones.
Do not use the power supply switch to turn the appliance on/off
▶▶
ever use the external isolation switch (GS) to turn the apN
pliance on and off, since it may be damaged in the long run
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
35
4
Electrical installer
The unused holes for cables passage must remain covered by caps.
Figure 4.1 Terminal block for electrical connections of K18 unit
REQ
4.
5.
6.
7.
I nsert cables through cable gland.
Identify the appropriate connection terminals.
Perform the connections.
Replace the lower front panel.
DHW
K18 CONTROL CABLE
1
RES
COM
+10
0
Power supply line
AL
AL
B
RS485
2
A
GND
9
4
9
AUX
W. PUMP BOILER
5
AUX
AUX
PROBE 2 PROBE 1
3
T2
T1
T1
The switches must also provide disconnector capability,
with min contact opening 4 mm.
+10
0
0
How to connect the power supply
+ AL
AUX
BOILER
0 AL
AUX
BOILER
ON/OFF
230V W. PUMP
7
Provide (by the installer) a protected single phase line (230 V 1-N
50 Hz) with:
▶▶ 1 three-pole cable type FG7(O)R 3Gx1.5;
▶▶ 1 4 A magnetothermic breaker with differential protection.
T2
+10
6
4.3ELECTRICAL POWER SUPPLY
N
L
L
Figure 4.2 Appliance power supply wiring diagram - Unit connection
to power supply network (230V 1N - 50 Hz)
N
8
To connect the three-pole power supply cable (Figure
4.2 p. 36):
1. Access the connection terminal block according to Procedure 4.2 p. 35.
2. Connect the three wires to terminal board (TER) as shown in
Figure 4.2 p. 36.
3. Provide the earth lead-in wire longer than live ones (last to
be torn in the event of accidental pulling).
1
2
3
4
5
6
7
8
9
Control system connection (see Paragraph 4.4 p. 36)
odbus connection to RS485 port for optional monitoring
M
Outdoor temperature probe connection (Paragraph 4.7 p. 38)
GHP temperature sensor connection (see par. 4.7 p. 38)
Connection of 0-10 V signal on the internal water pump
Condensing boiler module connections
Supply connection on the internal water pump
Power supply connection (see Paragraph 4.3 p. 36)
Earth connections for signal cable shielding
How to perform connections
All electrical connections must be performed in the connecting
terminal block located near the Electrical Panel:
1. Ensure the appliance is not live.
2. Remove the appliance's lower front panel (placed under the
fan).
3. Remove the cap of the hole for electrical connection (see reference C Figure 1.2 p. 9) and fit a suitable cable gland in
order to:
„„ properly protect the cable insulation from abrasion;
„„ properly protect cables against mechanical stresses on
the wiring terminals and liquid penetration (at least the
protection index IP 25 declared for the unit must be
guaranteed).
36
Lphase
Nneutral
Components NOT SUPPLIED:
GS4A magnetothermic breaker with differential protection
4.4CONTROL SYSTEM
Control systems, options (1) (2) (3)
Three separate control systems are provided, each with specific
features, components and diagrams:
▶▶ System (1), with OQLT019 controller.
▶▶ System (2), with chronothermostat OCDS007.
▶▶ System (3), with an external request.
OQLT019 controller (optional)
(System (1) see also Paragraph 1.8 p. 21)
4
Electrical installer
How to connect the OQLT019 controller
Connection of OQLT019 controller is made on the wiring
terminal block located in the Electrical Panel inside the
unit.
1. Access the Electrical Board of the appliance according to the
Procedure 4.2 p. 35.
2. Refer to the OQLT019 controller Installation Manual for the
actual wiring instructions.
Figure 4.3 Connection diagram (Request signal) to OCDS007
chronothermostat
OCDS007 Ambient chronothermostat (optional)
(System (2) see also Paragraph 1.8 p. 21)
How to connect the OCDS007 chronothermostat
1.
2.
3.
4.
Connection of OCDS007 is made on the wiring terminal
block located in the Electrical Panel inside the unit.
Access the Electrical Board of the appliance according to the
Procedure 4.2 p. 35.
Perform connections as shown in the diagram in Figure
4.3 p. 37 and in Figure 4.4 p. 37.
Use shielded cable 2x0.75 mm² (or 4 x 0.75 mm² if the alarm
indication signal is included), connecting the shield to one
of the ground terminals provided on the appliance electrical
panel.
The connection cable must be kept separate from mains
voltage cables.
Figure 4.4 Connection diagram (alarm indication signal) to OCDS007
chronothermostat
The cable may not be longer than 30 metres.
External request
(System (3) see also Paragraph 1.8 p. 21)
It is required to arrange:
▶▶ request device (e.g. thermostat, clock, button, ...) fitted with
a voltage-free NO contact.
How to connect the external request
1.
2.
3.
4.
Connection of external request is effected on the terminal board located in the Electrical Panel inside the unit.
Access the Electrical Board of the appliance according to the
Procedure 4.2 p. 35.
Connect the voltage free contact of the external device,
through two conductor wires, to terminals COM and REQ
(respectively: common and heating request) of the internal
terminal board (Figure 4.5 p. 37).
Use shielded cable 2x0.75 mm², connecting the shield to one
of the ground terminals provided on the appliance electrical
panel.
The connection cable must be kept separate from mains
voltage cables.
Figure 4.5 Wiring diagram, external enable connection
The signal is SELV (Safety Extra Low Voltage). The voltage-free contact of the external device that gives the
request must have double or reinforced insulation with
respect to line voltage parts.
The cable may not be longer than 30 metres.
COMcommon
REQheating request
Components NOT SUPPLIED:
CSexternal request
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
37
4
Electrical installer
4.5ALARM INDICATOR LAMP
Connect the button as instructed below.
Figure 4.7 p. 38
This paragraph is not applicable in case of use of system
controller OQLT019 or of chronothermostat OCDS007.
It is possible to connect a lamp indicating an appliance’s alarm
(for both the heat pump module and the boiler module) to the
Electrical Panel inside the appliance.
To connect the alarm indicator lamp, follow the instructions
below.
Figure 4.6 p. 38.
1. A
ccess the connection terminal block according to Procedure 4.2 p. 35.
2. The cable required to connect the lamp must be shielded
2x0.75 mm².
3. Cut a suitable length of cable.
4. Connect the cable to terminals AL and AL.
5. The connection cable must be kept separate from mains
voltage cables.
The cable may not be longer than 30 metres.
1. A
ccess the connection terminal block according to Procedure 4.2 p. 35.
2. The cable required to connect the reset button must be
shielded 2x0.75 mm².
3. Cut a suitable length of cable.
4. Connect the cable to terminals COM and RES.
5. The connection cable must be kept separate from mains
voltage cables.
The cable may not be longer than 30 metres.
It is not possible to remote the boiler module alarm reset
command. The reset command of this module must be
given by pressing the appropriate button on the boiler
panel (detail 4 Figure 1.16 p. 21).
Figure 4.7 Board error reset connection wiring diagram
Figure 4.6 Alarm indicator lamp connection wiring diagram
Lphase
Nneutral
Components NOT SUPPLIED:
LAgeneral alarm indicator lamp
PTRsafety transformer with secondary voltage ≤ 24V (compliant
with norms IEC EN 61558-2-6)
The AL lamp switched on indicates an appliance's alarm.
To know the type of alarm, read through the sight glass
(reference I Figure 1.2 p. 9), the operating code on
the display of the electronic board and refer to Table
8.2 p. 54.
4.6REMOTE THE BOARD ERROR RESET
This paragraph is not applicable in case of use of
OQLT019 system controller.
The error reset for the heat pump module of the
K18 Hybrigas EASY Indoor unit may be remoted by connecting
a dedicated button to the terminal block in the Electrical Panel
inside the appliance.
38
COMcommon
RESreset errors
Components NOT SUPPLIED:
PLSrelease button
4.7TEMPERATURE PROBES
It is possible to connect one or two temperature probes, AUX
PROBE 1 and/or AUX PROBE 2 to control specific functions described in Paragraph 5.5.4 p. 43.
4.7.1GHP immersion temperature probe
The probe connected to the AUX PROBE 1 input is factory installed inside the K18 Hybrigas EASY Indoor unit on the delivery
manifold downstream of the boiler coupling (see detail S Figure
1.10 p. 16).
The probe is only used in this position in case of distribution with
only primary water circuit in the absence of the buffer tank (see
Figures 3.2 p. 27 and 3.3 p. 28).
In all other cases, use the GHP probe supplied installing it downstream of the primary/secondary decoupling or the optional
buffer tank (see detail 1 Figures 3.4 p. 28 and 3.5 p. 29). This
probe must be connected to the AUX PROBE 1 input as shown
in Figure 4.8 p. 39, after disconnecting the factory wired one.
5
First start-up
4.7.2Outdoor temperature probe
4.7.3DHW temperature probe
The outdoor temperature probe (available as OSND007 optional) must be connected to AUX PROBE 2 input, as shown in Figure
4.8 p. 39.
With reference to Paragraph 1.8 p. 21, this probe is recommended for applications in which control type (2) or (3) is used
together with adjustment based on climatic curve.
Proceed as follows to connect the DHW probe inside the remote
DHW buffer tank:
1. remove the K18 Hybrigas EASY Indoor unit left panel (detail
B Figure 1.2 p. 9) removing the 2 fastening screws;
2. take the DHW probe cable located on the plate below the
hydraulic piping (see detail C Figure 1.5 p. 11), pass it
through the appropriate connection plate passage (detail E
Figure 1.4 p. 10), using an appropriate cable gland and/or
sheath that allows to adequately protect the cable insulation
from abrasion, and insert the probe into the remote DHW
buffer tank probe well;
3. re-mount the unit left panel.
Figure 4.8 Temperature probes connection to K18 unit
AUnit terminal block detail
GHPWater delivery temperature probe NTC 10k Beta 3977 (supplied as standard with K18 Hybrigas EASY Indoor unit)
EXT.TAir temperature probe NTC 10k Beta 3977 (optional OSND007)
NOTESUse shielded cable:
2 x 0.5 mm² up to 40 m
2 x 0.75 mm² up to 60 m
2 x 1.0 mm² up to 80 m
2 x 1.5 mm² up to 120 m
Connect the shield to a ground terminal on the
K18 Hybrigas EASY Indoor unit's terminal block
5FIRST START-UP
First Start-Up entails checking/setting up the combustion parameters and may exclusively be carried out by a
Robur TAC. NEITHER the user NOR the installation technician is authorised to perform such operations, under
penalty of voiding the warranty.
▶▶
The installer is obliged to carry out preliminary checks
described in Paragraph 5.1 p. 39.
Should any abnormal or hazardous installation situations be
found, the TAC shall not perform First start-up and the appliance
shall not be commissioned.
These situations may be:
▶▶ appliance installed inside a room that has no sufficiently
wide aeration vents;
▶▶ other gas appliances inside the room which are not type C;
▶▶ failed compliance with minimum clearances;
▶▶ insufficient distance from combustible or flammable materials;
▶▶ conditions that do not warrant access and maintenance in
safety;
▶▶ appliance switched on/off with the main switch, instead of
the control device provided (OQLT019, OCDS007, or external
request);
▶▶ appliance defects or faults caused during transport or installation;
▶▶ gas smell;
▶▶ non-compliant mains gas pressure;
▶▶ non-compliant flue gas exhaust;
▶▶ no outside ducting of the safety valve drain;
5.1PRELIMINARY CHECKS
Paragraph dedicated to the installer.
Preliminary checks for First start-up
Upon completing installation, before contacting the TAC the installer must check:
▶▶ water-heating, electrical and gas systems suitable for the required capacities and equipped with all safety and control
devices required by the regulations in force;
▶▶ absence of leaks in the water and gas systems;
▶▶ type of gas for which the appliance is designed (methane);
▶▶ supply gas pressure complying with the values of Table
3.3 p. 32, with max tolerance ±15%;
▶▶ Power supply mains complying with the appliance's rating
plate data;
▶▶
a ppliance correctly installed, according to the manufacturer's instructions;
system installed in a workmanlike manner, according to national and local regulations.
Abnormal or hazardous installation situations
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
39
5
First start-up
▶▶
▶▶
o ducting of the air expelled by the fan;
n
all situations that may involve operation abnormalities or are
potentially hazardous.
Non-compliant system and corrective actions
Should the TAC find any non conformities, the user/installer is
bound to perform any corrective procedures required by the
TAC.
After performing the remedial actions (the installer's responsibility), if the TAC deems that safety and conformity conditions
are in place, "First start-up" may be effected.
5.2HOW TO ACCESS THE BOILER
To access the boiler proceed as follows:
1. remove the K18 Hybrigas EASY Indoor unit left panel (detail
B Figure 1.2 p. 9) removing the 2 fastening screws;
2. remove the fastening screws placed in the lower edge f the
boiler front panel (detail 1 Figure 5.1 p. 40);
3. grab the front panel from the bottom and remove it pulling
to yourself and then upwards (Figure 5.1 p. 40).
Figure 5.1 Removal of the front panel of the boiler module
module of the unit (detail B of Figure 1.15 p. 20) for 5 seconds to activate the chimney sweep function at minimum
power.
8. The display shows the letters "CS.LO" (chimney sweep low
power), alternating with the flashing message "UAIt" (wait)
which indicates that the machine is not yet ready for the
reading.
9. Once an approximate time ranging between 5 and 8 minutes elapses, the flashing message becomes "_GO_" to indicate that the combustion control can be implemented.
10.Ensure the CO2 value is between values indicated in column
"Minimal thermal capacity" of Table 5.1 p. 41. Otherwise
set CO2 percentage reading by acting on the offset adjustment screw.
11.Press the
key on the user interface again for 5 seconds
to activate the chimney sweep function at maximum power.
12.The display shows the letters "CS.HI" (chimney sweep high
power), alternating once again with the flashing message
"UAIt" (wait) which indicates that the machine is not yet
ready for the reading.
13.After a short while, the flashing message becomes "_GO_"
again to indicate that the combustion control at maximum
power can be implemented.
14.Ensure the CO2 value is between values indicated in column
"Nominal thermal capacity" of Table 5.1 p. 41.
If the check is successful:
15.Press the
key on the user interface again for 5 seconds
to deactivate the chimney sweep function and complete the
procedure.
If the check is not successful:
16.Set CO2 percentage reading by acting on the throttle adjustment screw.
17.Press the
key on the user interface again for 5 seconds to
deactivate the chimney sweep function.
18.Repeat points 7 to 10 to reactivate the chimney sweep function at minimum capacity; verify once again and if necessary,
correct the CO2 value in these conditions by actuating the
offset adjustment screw.
1
1
1
Boiler front panel fastening screws
5.3HEAT PUMP COMBUSTION PARAMETERS
CHECK
Paragraph reserved exclusively to TACs.
Figure 5.2 p. 41.
1. If the appliance is running, switch it off with the applicable
control system (OQLT019, OCDS007, external request).
2. Remove the cap over the offset adjustment screw (C).
3. Screw in completely the throttle adjustment screw (D).
4. Screw in completely the offset adjustment screw (C).
5. Unscrew the throttle adjustment screw (D) as indicated in
Table 5.1 p. 41.
6. Unscrew the offset adjustment screw (C) as indicated in Table 5.1 p. 41.
7. Press the
40
key on the user interface of the heat pump
19.Press the
key on the user interface again for 5 seconds to
activate the chimney sweep function at maximum capacity,
and then again for 5 seconds to deactivate it and complete
the procedure.
To ensure the chimney sweep function is executed properly, there must be adequate thermal load, otherwise the
appliance could reach the maximum limit of the delivery
and/or return temperature and then stop.
The following may be necessary to provide adequate
thermal load, depending on the system characteristics:
„„ activate optional pumps or zone valves of the distribution water circuit;
„„ fully open the manual or thermostatic valves, mounted
on the radiators;
„„ activate the ventilation of the fan coils and increase the
setting of the optional thermostat placed on them.
Table 5.2 p. 41 shows the messages that can appear on the
display while the chimney sweep function is running, the relative meaning and the optional actions required.
Limit the time you use the chimney sweep function to
the minimum actually required.
5
First start-up
The system automatically interrupts chimney sweep
function after 20 minutes from activation.
If the required CO2 settings cannot be reached, contact
Robur.
Table 5.1 Gas valve setting table for K18 heat pump module
Gas
Gas network
pressure
Type
mbar
G20
See Table
3.3 p. 32
Screw pre-adjustment
Throttle
Offset
turns
-6 ¾
Offset pressure
Minimum
turns
-3
Percentage CO2 in fumes
Minimal thermal capacity
Nominal thermal capacity
Pa
%
%
-10
8,50 (1)
9,00 (2)
(1)8,3 ÷ 8,7.
(2)8,8 ÷ 9,2.
Table 5.2 Display messages for chimney sweep function
Message
HI.t
Meaning
Chimney sweep function is active at minimum capacity and the flame
is still not lit or lit at a different capacity than required.
Chimney sweep function is active at minimum capacity and the flame
is lit at the required capacity.
Chimney sweep function is active at maximum capacity and the flame
is still not lit or lit at a different capacity than required.
Chimney sweep function is active at maximum capacity and the flame
is lit at the required capacity.
The appliance has switched off because the maximum operating
temperature of the delivery and/or return water was exceeded.
Err.
The appliance switched off due to an anomaly (Warning or Error).
Cod.x
(x = 0, 1, ..)
The appliance is temporarily running a special cycle that requires
the rare event of one of these codes appearing, deactivate the funcspecific control of the power that is not compatible with the execution In
tion by pressing the key for 5 seconds and then contact Robur.
of the chimney sweep function.
CS.LO / UAIt
CS.LO / _GO_
CS.HI / UAIt
CS.HI / _GO_
Action
Wait.
Run CO2 reading (minimum capacity).
Wait.
Run CO2 reading (maximum capacity).
Deactivate the function by pressing the key for 5 seconds and then
increase the thermal load before reactivating the function.
Deactivate the function by pressing the key for 5 seconds and then
intervene according to the operating codes shown on the display,
while referring to Section 8 p. 54. Once the problem is resolved,
reactivate the function.
Figure 5.2 K18 heat pump module gas valve
A
B
C
D
as mains pressure intake
G
Offset pressure intake
Offset adjustment screw
Throttle adjustment screw
A
C
B
D
5.4BOILER COMBUSTION PARAMETERS
CHECK
The CO2 value should be checked with casing assembled,
while the gas valve should be adjusted with the casing
open.
To check and calibrate the CO2 value of the boiler at minimum
and maximum heating power proceed as follows.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
41
5
First start-up
Minimum power
Maximum power
1. A
ccess the P10 parameter by following the procedure described in Paragraph 5.6 p. 45 and remain in edit mode
until the end of calibration (the maximum time before being
forced out of the edit mode is 7 minutes).
2. Activate the chimney sweep function by pressing for 7 seconds the R key (detail 4 Figure 1.16 p. 21).
3. Insert the fumes analyser probe in the suitable fumes inlet
(detail C Figure 1.9 p. 15), then make sure that the CO2
value is 9,04 %, otherwise unscrew the protection screw A
(5.3 p. 42) and adjust using a 4 Allen wrench the screw 2
(5.3 p. 42) od the offset adjuster. To increase the CO2 value
turn the screw clockwise and vice-versa if you want to decrease it.
4. Once completed the adjustment, tighten the protection
screw A (5.3 p. 42) on the offset adjuster.
5. Exit the P10 parameter by following the procedure described
in Paragraph 5.6 p. 45.
1. A
ctivate the chimney sweep function by pressing for 7 seconds the R key (detail 4 Figure 1.16 p. 21).
2. Make sure that the CO2 value is 9,44 %, otherwise adjust
using the screw 1 of the gas flow adjuster (5.3 p. 42). To
increase the CO2 value turn the screw counterclockwise and
vice-versa if you want to decrease it.
3. After each adjustment variation on screw 1 (5.3 p. 42) of
the gas flow adjuster you have to wait for the boiler to stabilize itself to the set value (about 30 seconds).
4. Press the 3 key (Figure 1.16 p. 21) to deactivate the chimney sweep function.
5. Access the P10 parameter again and make sure that the CO2
value at minimum power has not changed. If so, repeat the
calibration described in Paragraph  p. 42.
5.5SETTING PARAMETERS FOR HEAT PUMP
FIRST START-UP
Figure 5.3 Boiler gas valve
Paragraph reserved exclusively to TACs.
The instructions on the use of the GHP10 electronic
board concern the firmware version 1.012.
1
For the use of GHP 10 electronic board and related menu,
see Chapter 6 p. 47.
2
A
1
2
A
as flow adjustment screw
G
Offset adjustment screw
Protection screw
Table 5.3 Menu 4 GHP10 board parameters for startup
Parameter
Do not modify
Temperature measurement unit
47
IF20 electronic board usage
48
49
Building time constant
Auxiliary boiler installation type
Do not modify
50
Auxiliary boiler purpose for space heating
52
Do not modify
53
Do not modify
54
Do not modify
55
156
Do not modify
Auxiliary boiler 0-10 V output temperature setpoint
corresponding to 0 V
Auxiliary boiler 0-10 V output temperature setpoint
corresponding to 10 V
Min auxiliary boiler 0-10 V output temperature setpoint
for min ON
Auxiliary boiler alarm input management
Auxiliary boiler locking time for space heating
163
Heating antifreeze function activated
174
Modulation of circulation pump in space heating mode
activated
OFF drive voltage for heating circulation pump
175
42
Description
44
Do not modify
Setting
0.°C
1.°F
1.generic controller
2.Siemens controller (OQLT019)
from 0 to 50 hours
0.none (not active)
1.emergency (active only if K18 in alarm)
2.integration
3.integration and replacement
Default
0
1
10
1
3
0
80
27
from 0 to 600 minutes
0.not active
1.active
0.not active
1.active
1
40
1
1
0,7
5
First start-up
Parameter
Do not modify
178
Description
ON drive voltage for circulation pump in space heating
mode
Space heating mode water deltaT setpoint
181
Power modulation enable for space heating
182
Glycol in heating water loop
185 (2)
Outdoor temperature threshold to enable auxiliary boiler from -30 °C to 40 °C
in space heating
Temperature differential for GAHP recovery after replace- 0,0replacement function disabled
ment with auxiliary boiler due to exceeding operational from 0.1 to 10.0 K return differential
limits
0.not active
Fan noise reduction
1.active
Min flow rate for heating circulation pump
from 4 to 20 hundreds of liters/hour
Auxiliary boiler 0-10 V output temperature setpoint boost from 0 K to 20 K
0.none (probe not installed)
AUX 2 temperature probe usage
2.outdoor temperature probe
AUX 1 temperature probe usage
Max delivery water setpoint for space heating
from 35 °C to 80 °C
Max inlet water setpoint for space heating
from 25 °C to 70 °C
Min delivery water setpoint for space heating
from 30 °C to 60 °C
Min inlet water setpoint for space heating
from 20 °C to 50 °C
Auxiliary boiler release integral
from 0 to 500 °C * minutes
Auxiliary boiler reset integral
from 0 to 500 °C * minutes
Low outdoor temperature threshold for replacing GAHP from -30 °C to 10 °C
with auxiliary boiler
High outdoor temperature threshold for replacing GAHP from 10 °C to 40 °C
with auxiliary boiler
0.return
Delivery water temperature control for space heating
1.delivery
0.Fixed setpoint
Setpoint management
1.heating curve
The minimum and maximum values
Fixed water setpoint for space heating
depend on what has been set in the
installation stage.
Heating curve slope for space heating
from 10 to 400
Heating curve offset for space heating
from -5 K to +5 K
Room temperature setpoint with heating curve for space from 0 °C to 40 °C
heating
176 (1)
187
198
200
203
209
210
211 (3)
212 (3)
213 (3)
214 (3)
215
216
Do not modify
217 (4)
218 (5)
219 (6)
225 (7)
226 (7) (8)
228 (7)
229 (7)
230 (7)
Setting
Default
from 0 V to 10 V
10
from +1 K to +20 K
0.not active
1.active
0.absent
1.present
10
1
0
10
3,0
0
4
0
0
1
40
30
30
20
30
5
-30
14
1
1
40
75
0
20
(1)If modulation of circulation pump in space heating mode is not active, i.e. parameter 174 set to 0.
(2)Auxiliary boiler enabled if outdoor temperature < parameter 185.
(3)Parameters 211 and 213 are used if parameter 219 has value 1 and parameters 212 and 214 are used if parameter 219 has value 0. If the unit is connected to controller OQLT019 (parameter
47 set to 2) this parameter is ignored; in this case maximum (or minimum) setpoint is fixed and corresponds to maximum (or minimum) value set with parameter.
(4)Replacement if outdoor temperature < parameter 217.
(5)Replacement if outdoor temperature > parameter 218.
(6)If the system is set for regulation of space heating service using GHP probe (AUX PROBE 1, see parameter 210), regulation of course occurs on the pipe on which the probe is physically
installed. However, it is still important to set this parameter correctly in order to allow the system to apply correct maximum and minimum setpoint limits.
(7)If the unit is connected to controller OQLT019 this parameter is ignored.
(8)This parameter is ignored if parameter 225 is set to 1.
5.5.1Settings depending on the control system type
▶▶
▶▶
If the OQLT019 system controller is used, set parameter 47
to 2.
For other control systems, set parameter 47 to 1 (default).
5.5.2Settings depending on glycol presence
Before doing these settings, read warnings in Paragraphs
3.4 p. 30 and 3.5 p. 30.
▶▶
▶▶
If has been added in the primary water circuit glycol, set parameter 182 to 1; additionally, the anti-icing function can be
disabled by setting parameter 163 to 0.
If has not been added glycol, set parameter 182 to 0 and
make sure that parameter 163 is set to 1; also, keep the unit
connected to power supply and to gas network, in order to
allow anti-icing function activation.
5.5.3Operating mode setting (ON/OFF or
modulating)
Before doing this setting, is strongly suggested contact
Technical Support Robur.
The operating mode is MODULATING by default. To set the unit
in ON/OFF mode, set parameter 181 to 0
5.5.4Settings depending on the installed
temperature probes
ith OQLT019 system controller
W
Follow the instructions provided in the system controller installation manual.
ith other control systems (OCDS007 chronothermostat or
W
generic external request)
▶▶ Referring to Figure 3.1 p. 27, connect the GHP probe to
AUX PROBE 1 clamp (see Paragraph 4.7 p. 38) and set parameter 210 to 1 (probe for space heating regulation).
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
43
5
First start-up
▶▶
If weather compensation is activated (see Paragraph
6.5.1 p. 48), the installation of an outdoor temperature
probe EXT.T (Optional OSND007) is recommended; install
this probe in North facing, protected by direct sunlight and
far from heat sources (windows, discharges, ecc.) and connect it to clamp AUX PROBE 2 (see Paragraph 4.7 p. 38);
set parameter 209 to 2 (outdoor temperature probe). If this
probe is not installed weather compensation will be based
on the value provided by outdoor temperature probe on
board unit, significantly less accurate.
5.5.5Auxiliary boiler (boiler module) management
settings
▶▶
▶▶
ake sure that parameters 49, 52, 53, 54 and 55 are set to
M
their default value as shown in Table 5.3 p. 42.
With reference to the possible functions of the auxiliary
boiler (condensing boiler module) for the space heating service (see Paragraph 1.1.3 p. 8 and further on in this Paragraph), set parameter 50 to:
1. for emergency mode;
2. for integration mode;
3. (default value) for integration and replacement mode.
▶▶
▶▶
T he setpoint value communicated by 0-10 V signal to the
auxiliary boiler can be increased by a constant boost value
with respect to the actual system setpoint. This is sometimes
useful to guarantee that the outlet manifold can actually
reach the setpoint, even despite water mixing occurring on
the secondary circuit. If required, set parameter 203 to the
desired boost value. It is recommended to limit the boost
value to that which is strictly needed.
It is possible to inhibit auxiliary boiler operation in integration mode for space heating service above a set outdoor
temperature threshold.
„„ To use this function, set parameter 185 to the desired
outdoor temperature threshold value.
„„ To disable this function, set parameter 185 to maximum
value (40 °C).
Even when inhibited by the above function, the auxiliary
boiler remains active for the emergency function.
The function uses the filtered value with a constant time
of 30' with respect to the instantaneous value as the outdoor temperature.
I ntegration and replacement mode on space heating service
If the control mode of the boiler module is integration and replacement (parameter 50 set to 3 by default), the system uses
certain replacement criteria of the heat pump module for the
space heating service, using only the boiler module. The replacement criteria can be modified or inhibited by using certain
parameters.
1. Replacement at low outdoor temperature: the heat pump
module of the unit is replaced with the boiler module if the
outdoor temperature drops below a given value. This criterion is particularly useful when the system requires a particularly high delivery temperature (which exceeds also the
operating limits of the heat pump) when the outdoor temperature is very low.
„„ To use this feature, set the threshold value of the outdoor
temperature in parameter 217.
„„ To deactivate the replacement function, set parameter
217 to the minimum value allowed (-30 °C, default value).
44
2. R
eplacement at high outdoor temperature: the heat pump
module of the unit is replaced with the boiler module if the
outdoor temperature rises above a given value. This criterion is particularly useful in systems with low water content
and low energy demand with respect to the power of the
heat pump module.
„„ To use this feature, set the threshold value of the outdoor
temperature in parameter 218.
„„ To deactivate the replacement function, set parameter
218 to the maximum value allowed (40 °C).
„„ The function is active by default and the value is set to
14 °C.
Even these two replacement functions use the filtered
value of the outdoor temperature.
3. R
eplacement on heat pump module limit thermostating
condition: the heat pump module of the unit is replaced
with the boiler module if the delivery and/or return temperature of the heat pump module exceeds the permissible
operating limits (see Table 1.4 p. 23). Every 25’ the system
verifies whether the heat pump module can be reactivated.
This function can be modified or deactivated from parameter 187.
„„ To use this function, set parameter 187 to a value other than 0.0; a high value makes it less likely for the heat
pump module to be reactivated, thereby ensuring more
stable system operation; a low value favours the reactivation of the heat pump module but makes it more likely
for the limit thermostating condition to reoccur.
„„ To deactivate the replacement function, set parameter
187 to the minimum value allowed (0.0 K).
„„ The function is active by default and the value is set to
3.0 K.
5.5.6Settings depending on water setpoint mode
for the space heating service
ith OQLT019 system controller
W
Follow the instructions provided in the OQLT017 system controller installation manual (for example, to set the heating curves,
which are directly managed by such controller).
ith other control systems (OCDS007 chronothermostat or
W
generic external request)
It is possible to set the K18 Hybrigas EASY Indoor appliance to
provide the space heating service using a fixed water setpoint,
or a variable setpoint which depends on the outdoor temperature (weather compensated control; this option is strongly
recommended).
▶▶ To set fixed water setpoint mode, set parameter 225 to 0;
then set parameter 226 to the desidered setpoint value (Paragraph 6.5.2 p. 50).
▶▶ To set variable setpoint mode depending on outdoor temperature:
1. Set parameter 225 to 1.
2. A
ccess menu 2 and select Parameter "_26", display must
show "2._26" (refer to procedure Paragraph 6.4 p. 48).
3. Press button
: display shows the blinking code "rPF1".
4. Press again button
.
5. Then follow the instructions in Paragraph 6.5.1 p. 48.
To restart a locked-down unit, refer to Paragraph
6.6 p. 50.
5
First start-up
5.6SETTING PARAMETERS FOR BOILER
FIRST START-UP
3. U
se the keys "+" and "-" of the space heating circuit
select the parameter to be edited.
To access the parameters menu and set their values, follow the
procedure below (refer to Figure 5.4 p. 45):
1. Press
key to select the OFF mode, displayed with the
symbol.
2. Hold at the same time the
and
keys and wait until on
the display appears the
symbol with the message ‘P00’,
and release the
and
keys.
4. U
se the keys "+" and "-" of the DHW circuit
to change the
value of the parameter.
5. Press the
key to confirm and wait for the display to
stop blinking, to make the adjustment effective.
6. To exit the parameters menu, hold at the same time the
and
keys and wait for the symbol
to appear on the
display.
to
Figure 5.4 Access and setting to boiler module parameters
Table 5.4 Boiler electronic board parameters
Parameter
P00
P01
Do not modify
Do not modify
Do not modify
P02
P03
P04
Do not modify
Do not modify
P05
P06
P07
P08
P09
P10 (1)
P11 (1)
P12 (1)
P13 (1)
P14 (1)
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
P15
P16
Do not modify
Description
Boiler model selection
Boiler type selection
Gas type selection
WARNING: before changing parameter value you must refer to the
instructions supplied with the gas change kit
Heating temperature range setting
Heating run-up
Anti-water hammer selection
By enabling this function, the DHW contact is delayed for a time equal to
the entered value
Domestic hot water circuit preservation function (only for instantaneous
boilers)
Keeps the diverter valve in DHW position for the post-circulation time
(parameter P09) so as to maintain the secondary heat exchanger warm
Heating timing
Post-circulation heating timing
Post-circulation domestic hot water/boiler timing
Domestic hot water blower minimum speed adjustment
Domestic hot water blower maximum speed adjustment
Heating blower minimum speed adjustment
Heating blower maximum speed adjustment
Starting step adjustment
Legionella function
WARNING: burn hazard. See Paragraph 5.7 p. 46
Heating curve setting
Setting
0.natural gas
1.LPG
Default
7
2
0
0
3
from 0 to 20 seconds
2
0.disabled
1.enabled
1
0
36
24
0.disabled
1.enabled
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
0
15
45
5
First start-up
Parameter
P17
P18
P19
P20
P21
P22
P23
P24
P25
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Do not modify
Description
Disabling of domestic hot water request by means of a switch
Enabling 0-10 V drive
Min heating setpoint
Max heating setpoint
Max domestic hot water setpoint
DeltaT (delivery-return) setpoint
Heating modulating pump minimum speed
Heating modulating pump maximum speed
DWH buffer tank setpoint differential
(1)Do not change from the default value. In case of doubt:
• verify the correct setting of parameter P02;
Notes to boiler parameters setting
After setting the boiler parameters, you must:
▶▶ Check that user setpoint for space heating service is set to 80
°C. If not, set it to that value by using the keys "+" and "-" of
▶▶
▶▶
the space heating circuit
(left side of the boiler control
panel Figure 1.16 p. 21).
Check that user setpoint for DHW service is set to 55 °C. If
not, set it to that value by using the keys "+" and "-" of the
DHW circuit
(right side of the boiler control panel Figure
1.16 p. 21).
Make sure that the boiler is ON on both space heating and
DHW services. To do this, proceed as follows:
1. press
key to select desired operating mode
(summer mode / space heating only mode / winter
mode / OFF);
2. make sure that on the boiler display appear both the
symbol (on the left) and
fixed.
symbol (on the right), both
5.7ANTI-LEGIONELLA SERVICE SETTINGS
Anti-legionella service managed by boiler module of the
K18 Hybrigas EASY Indoor unit is set by default not active (parameter 15 set to 0 by default).
The service, if activated (parameter P15 set to 1), is carried out
with the following non-modifiable settings:
▶▶ The cycle is run for the first time one hour after electrically
starting the boiler.
▶▶ Then the cycle is run every 7 days, at the same time.
▶▶ Following loss of boiler voltage (e.g. after a blackout, even
if brief ) the previous anti-legionella cycle timing is reset. So
the next anti-legionella cycle will be run one hour after electrical start-up following the voltage loss.
It is not, therefore, possible to specify in advance the day
and time of execution of the anti-legionella disinfection
cycle.
Thermostatic valve
In order to avoid scalding or damage to persons, animals
or property we recommend installing a thermostatic
valve at the DHW buffer tank output.
If it is not possible to install a thermostatic valve at the
DHW buffer tank output, we recommend not activating
the anti-legionella function (parameter P15 to be left at
default value 0) and provide for the anti-legionella disinfection with methods other than the thermal shock (e.g.
chemical methods, UV lamps or addition of ozone).
46
Setting
from 45 °C to 75 °C
from 3 °C to 9 °C
Default
0
1
24
80
65
15
50
100
5
• set the parameter P00 to a value different than the current one, and then
restore the default value 7.
5.8SETTINGS DEPENDING ON THE PRIMARY
CIRCUIT WATER PUMP TYPE
The water pumps are controlled by the unit in variable flow rate
mode, both in space heating and DHW service, with the objective to keep constant temperature differential (10 K default for
the heat pump module, 15 K default for the condensing boiler
module) between water return and delivery in the whole range
of the unit thermal output power; this regulation mode is appropriate for most of applications.
However it is possible:
▶▶ To modify temperature differential value required for space
heating and/or DHW service, by setting respectively parameters 178 (heat pump module) and P22 (boiler module).
Before doing this, it is strongly suggested to contact Robur
Technical Support.
▶▶ To modify the lower limit of water pump flow rate, by setting parameter 200 (heat pump module) and P23 (boiler
module). This can be necessary to problems correct low or
nothing water circulation (possibly, only in some parts of the
plant) when the pump is controlled by the system at a low
flow rate.
▶▶ To set fixed flow rate pump operation, for space heating
(heat pump module only), set parameter 174 to value 0, then
set parameter 176 to a value between 3 (minimum flow rate)
and 10 (maximum flow rate).
For the heat pump module, it is always possible to show
the actual flow rate value measured by the appliance
flowmeter. To do this, enter menu 0 and select parameter
24: the value shown is expressed in liters/hour.
6
Normal operation
6NORMAL OPERATION
This section is for the end user.
6.1WARNINGS
General warnings
Prior to using the appliance carefully read the warnings
in Chapter III.1 p. 4, providing important information
on regulations and on safety.
(system 1, see Paragraph 1.8 p. 21), refer to the relevant
manual.
▶▶ Se l'apparecchio è comandato dal cronotermostato
OCDS007 o da un consenso esterno (es. termostato, orologio, pulsante, ... con contatto pulito NA), (sistemi (2) e (3) vedi Paragrafo 1.8 p. 21), l'apparecchio viene acceso/spento
dalle posizioni ON/OFF del dispositivo di controllo esterno.
After switching on with the control, in normal operating conditions, the appliance starts/stops automatically according to the
user's thermal needs, supplying hot water at the programmed
temperature.
Although the external request is in the "ON" position, this
does not mean the appliance will start immediately, but
it will only start when there are actual service demands.
First start-up by TAC
First start-up may exclusively be carried out by a Robur
TAC (Chapter 5 p. 39).
Never power the appliance off while it is running
NEVER power the appliance off while it is running (except in the event of danger, Chapter III.1 p. 4), since
the appliance or system might be damaged.
Burn hazard
Carefully read Paragraph 5.7 p. 46 and, if the anti-legionella service has been activated (boiler parameter
P15 at 1), make sure that the thermostatic valve is present and correctly adjusted.
Otherwise, contact the installer to set the boiler parameter P15 to 0, according to the procedure described in
Paragraph 5.6 p. 45.
6.3MESSAGES ON THE HEAT PUMP DISPLAY
4 digit display
The GHP10 board of the appliance (Paragraph 1.6 p. 20) is
equipped with a 4-digit display (detail A Figure 1.15 p. 20), visible through the sight glass (reference I Figure 1.2 p. 9).
▶▶ When the appliance is powered, all the LEDs switch on for 3
sec, then the central hyphens of the four digits are switched
on, and lastly the GHP10 board name is displayed in two subsequent stages (GHP during the first stage and 10 during the
second).
▶▶ After 5 sec, the appliance is ready to operate.
Signals in normal operation
▶▶
6.2SWITCH ON AND OFF
Routine switching on/off
The appliance may be exclusively switched on/off using
proper control device (OQLT019, OCDS007 or external
request).
Do not Switch On/Off with the power supply switch
Do not switch the appliance on/off with the power supply switch. This may be harmful and dangerous for the
appliance and for the system.
Inspections before switching on
▶▶
▶▶
▶▶
▶▶
▶▶
Before switching on the appliance, ensue that:
as cock open;
g
appliance electrical power supply (main switch GS ON, Figure 4.2 p. 36);
OQLT019 or OCDS007 power supply (if present);
K18 Hybrigas EASY Indoor on, that is the boiler module display on (detail G Figure 1.2 p. 9) and heat pump module
display on (detail I Figure 1.2 p. 9);
water circuit ready and filled.
How to switch on/off
▶▶
If the appliance is controlled by the OQLT019 controller
uring normal operation, water temperature values alterD
nate on the display: output,input and the difference between the two.
Events reporting
In case one or more events occur, the display shows up the three
event types, indicated by first green character:
▶▶ “I” for information;
▶▶ “u” for warning;
▶▶ “E” for errors.
The other three red digits represent a numeric event code.
Info events are shown steadily while warnings and errors blink.
The display rotates after the values of the outlet water temperature, the inlet and the difference between them.
If multiple events are active, they are shown in sequence, ordered by increasing code number.
If warning or error events are active, the left green symbol,
shown together with water temperature data, blinks.
If it is a permanent error or warning the appliance stops.
For details about information, errors and warnings codes see Tables 8.1 p. 54 and 8.2 p. 54.
Menu navigation
Once the menu list has been accessed (see Paragraph
6.4 p. 48), the display shows:
▶▶ first green digit on the left: indicates menu number (eg. "0.",
"1.", "2.", ... "8.");
▶▶ the last three red digits on the right, indicate a parameter
code or value, among those included in the selected menu
(e.g. "__6" "_20", "161").
(e.g. menu+parameter "1.__6", "2._20", "3.161").
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
47
6
Normal operation
6.4ON-BOARD ELECTRONIC CONTROLS
– MENUS AND PARAMETERS OF THE
GHP10 BOARD
Selection keys
One of the following actions may be done with the GHP10 board
selection keys (references B, C and D in Figure1.15 p. 20):
▶▶ Enter the menu list (by pressing the
key the first time).
▶▶ Scroll the menu list, or a series of parameters in a menu (by
pressing keys , ).
▶▶ Select a menu or a parameter (pressing the key
).
▶▶ Edit and confirm the setting of a parameter (pressing keys
and
and confirming with key ).
▶▶ Execute a command (pressing key
).
▶▶ Exit a menu and go back to the higher level by selecting the
letter "E" which is displayed at the end of the menu list or of
a series of parameters in a menu.
The letter "E" is displayed at the end a menu parameters list, and
indicates the exit to go back to the higher level by pressing .
Menus and Parameters
The menus may be display only (functional data or parameters),
display and setting (parameters) or control (reset).
▶▶ Display menus: menu "0" and menu "1";
▶▶ Command menu: menu "2" to execute error reset command
(Paragraph 6.6 p. 50);
▶▶ Visualization and modification (read and write) menu (for
the user): menu "3" to display or set certain system parameters (eg. water temperature setpoint); the settings are initialised by the TAC upon First start-up; the Table 6.1 p. 48
shows parameters in menu 3.
▶▶ Visualization and modification (read and write) menu (to be
exclusively used by the installer and TAC): menu "4." (for the
installer) "5." and "6." (for the TAC). They are password protected. These are specific sections, exclusively intended for
skilled personnel (installer or TAC). For information see the
technical Assistant Manual.
How to access the Menus and Parameters
Before Starting:
(1) Power supply switch "ON";
(2) Display showing water temperature data, and optionally one or more event codes.
To access the menus and parameters of the GHP10
board, proceed as follows (see also Figure 1.15 p. 20):
1. Remove the display transparent cover (detail I Figure
1.2 p. 9) by removing the four fixing screws.
2. Press the
key once to display the menus: the first menu is
displayed, "0." (= menu 0).
3. Press the
to scroll down and display the other/subsequent menus; the menu numbers will be displayed in order,
"1.", "2.", ... , "6." ... or "E" (= exit).
4. Select the menu of interest (e.g. display "2.___" = menu 2)
by pressing the
key; the first parameter code will be displayed, in order in the menu (e.g. display "2._21" = parameter 21 in menu 2).
5. Press the
to scroll down the other parameters in the
menu; the codes will be displayed in order (e.g. display
"2._21", ... "2._26" = parameters 21, ... 26 in menu 2), or letter
"E" (= exit) at the end of the list.
6. Edit the parameter of interest by pressing key
the display will show the current parameter value (blinking) or, for
a command menu, a blinking code (eg. "rEr1" for the board
error reset command).
7. Press the
key to reconfirm the figure; or use
and
keys to modify the figure, and press
at the end to confirm
or set the new figure; if however, it is a matter of controlling
an appliance operation, press the
key to execute it.
8. To exit a parameter menu or the menu list and go back to
the higher level, press the
until displaying the letter "E"
for exit, then press the
key again.
9. The water temperature values alternate again on the display:
output, input and the difference between them.
10.Fit the display transparent cover.
Table 6.1 Menu 3 parameters (for the user) of GHP10 board
Parameter
Description
44
Temperature display format
48
Building time constant
163
Anti-icing function
198
Fan noise reduction
225 (1)
Setpoint source
226 (1) (2)
Fixed setpoint in heating operation
228 (1) (3)
229 (1) (3)
230 (1) (3)
Heating curve slope
Heating curve offset
Internal ambient setpoint with heating curve
Setting
0.°C
1.°F
from 0 to 50 hours
0.not active
1.active
0.not active
1.active
0.Fixed setpoint
1.Heating curve
The minimum and maximum values depend on what has been set in the installation stage.
from 10 to 400
from -5 K to +5 K
from 0 °C to 40 °C
Default
0
10
1
0
1
75
0
20
(1)If the unit is connected to the system controller (optional) this parameter is ignored.
(2)This parameter is ignored if parameter 225 is set to 1.
(3)This parameter is ignored if parameter 225 is set to 0.
6.5MODIFYING HEAT PUMP SETTINGS
Do not modify complex settings
Specific technical and system knowledge is required for
complex settings. Contact a TAC.
The settings described in this section does not apply
48
when using the OQLT019 system controller. Refer to the
system controller installation manual for detailed instructions about its settings.
6.5.1How to modify the heating curve
This kind of regulation is active if parameter 225 (menu
6
Normal operation
3) is set to value 1 (default).
The heating curve makes it possible to change the system's outlet water temperature according to the measured external temperature and to the internal ambient set point temperature.
Depending on the type of installation, especially on the type of
exchangers (radiators, fan coils, floor radiators etc.) and the features of the building, a specific curve will be used, selected from
the family of heating curves. Furthermore, upon changing the
internal room set point temperature, the curve actually used will
be automatically modified.
The family of heating curves is shown in Figure 6.1 p. 49 and
the curve to be used is chosen by specifying the value of parameter 228 in menu 3 which indicates the curve slope. The curve
defined in this way refers to an internal ambient set-point temperature of 20 °C (68 °F) . If the set-point temperature is different,
the system automatically adapts the curve used.
To set the adequate heating curve operate as specified
below:
1. s et the flow water temperature according to the expected
minimum external ambient temperature (for instance: Twater = 60 °C when Toutside = -10 °C);
2. using the chart in Figure 6.1 p. 49, select the curve that
meets the above requirement (in the specific case curve with
slope 1.5);
3. multiply the slope of the selected curve by 100 and set
the figure thus obtained in menu 3 parameter 228 (in the
example set parameter 228 at 150);
If no curve passes through the established point, select
an intermediate figure between those of the curves immediately above or immediately below this point. Indicatively, a system that uses floor radiant heat exchangers
will use "low" slope figures, a fan coil system will use “medium” figures and a system with radiators "high" figures.
4. e
nsure parameter 229 (heating curve offset) of menu 3 is set
at 0;
5. set parameter 230 (room temperature setpoint with heating
curve) of menu 3 at the desired setting (default setting 20
°C).
Unit operation is based on the heating curve ONLY if the
setting of parameter 225 (menu 3) is at 1 (default setting
- see Table 5.3 p. 42).
If the slope of the selected curve is not correct the following
cases may occur, to be assessed during early operation of the
system:
▶▶ Ambient temperature lower when outdoor temperature is
lower: in this case, the slope of the curve is not sufficient, it
is needed to set a higher value for parameter 228, indicating
the slope of the curve.
▶▶ Internal ambient temperature is higher when the external
temperature is lower: in this case the curve slope is excessive, a lower figure must be set for parameter 228 indicating
curve slope.
If however the slope is correct (stable internal ambient temperature when the outside temperature changes), but the internal
temperature does not match the set point one, the following
cases may occur:
▶▶ Internal ambient temperature is always higher than the setpoint: in this case one must act on the Offset parameter of
the heating curve, setting a negative figure equal to the internal temperature deviation from the setpoint; for instance,
if the setpoint is 22 °C and the actual internal temperature is
24 °C, set the Offset parameter (parameter 229) to -2 °C.
▶▶ Internal ambient temperature is always lower than the setpoint: in this case a positive figure must be set for the Offset
parameter of the heating curve; for instance, if the setpoint
is 20 °C and the actual internal temperature is 19 °C, set the
Offset parameter (parameter 229) to 1 °C.
Figure 6.1 Heating curves for internal ambient temperature = 20 °C
Tacq
Tacqwater temperature
Tambexternal ambient temperature
Tamb
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
49
6
Normal operation
6.5.2How to raise/lower the water temperature setpoint (fixed setpoint)
The water temperature set-point establishes the outlet temperature to the system (water output from the appliance), or inlet
from the system (water input in the appliance). The temperature
is pre-set by the TAC upon First start-up
The water set point is set on outlet by default.
▶▶
▶▶
T o restart the appliance you must know and perform the
procedure concerning the issue signalled and identified by
the code of the module involved (Paragraph 8.1 p. 54 for
the heat pump module and Paragraph 8.2 p. 56 for the
boiler module).
Only act if you are familiar with the issue and with the procedure (technical expertise and professional qualifications
might be required).
If you do not know the code, the problem, or the procedure,
or you do not have sufficient skills, and in any case of doubt,
contact the TAC.
Fixed setpoint regulation is used if parameter 225 is set
to 0.
▶▶
In general, regulation based on heating curve, described
in Paragraph 6.5.1 p. 48, provides better results in
terms of comfort and efficiency. Contact Robur technical
Support before changing the regulation mode.
Locked-down appliance
To raise/lower the water temperature set-point, proceed
as follows (also see Paragraph 6.4 p. 48):
1. Access menu 3 parameter 225 (= setpoint origin) with keys
and
; set parameter 225 to 0 (fixed setpoint - see
Table 6.1 p. 48).
2. Set parameter 226 (fixed setpoint in heating operation) to
the desired temperature setting.
3. Exit menu 3 by pressing the
key until displaying the letter
"E" for exit, then press the
key.
4. The water temperature values alternate again on the display:
output, input and the difference between them.
An external intervention (reset or repair) is required due to an
appliance fault or problem with the system.
▶▶ A reset may be enough for a temporary and provisional
anomaly.
▶▶ For a fault or breakdown, alert the maintenance technician
or TAC.
6.6.1Reset heat pump module
There are three options for resetting a fault:
1. If the appliance is connected to the OQLT019 controller, you
may act through the control device, as described in the relevant manual.
2. If a remote reset button has been provided (Paragraph
4.6 p. 38) act directly on the button.
3. Act on unlock/reset button under unit display (reference J
Figure 1.2 p. 9).
6.6RESTARTING A LOCKED-DOWN UNIT
6.6.2Reset boiler module
Fault signals on the display
To reset a fault, act on unlock/reset button (Figure 1.2 p. 9 detail H).
In the event of heat pump module or boiler module lockeddown, an operational code flashes on the corresponding display
of the involved module.
6.7MESSAGES ON THE BOILER DISPLAY
Figure 6.2 Boiler display icons
4
5
6
7
3
8
2
9
1
10
≤ 33%
15
14
1
2
3
4
5
6
7
8
13
12
>66%<100%
11
P arameter number indication or displayed info code
Parameter programming function active
Not used
Not used
Not used
Not used
Temperature display / setpoint / parameter value
OpenTherm communication present (remote control / area control unit)
Info menu display
To view the boiler data from Info menu you have to:
1. remove the display transparent cover (detail G Figure
50
>33%<66%
9
10
11
12
13
14
15
Insufficient system water pressure signal
Flame presence signal / it also indicates, on 3 percentage levels, the
modulating power level of the boiler
Operation in domestic hot water mode enabled
Resettable error signal
OFF operating mode
Non resettable error signal
Operation in heating mode enabled
1.2 p. 9) by removing the fixing screws;
2. press the
key (detail 2 Figure 1.16 p. 21). The info code
will be displayed on the left side of the screen and its relative
6
Normal operation
value will be displayed on the centre of the screen.
3. u
se keys + and - of the space heating circuit
(detail 1 Figure 1.16 p. 21) to scroll through the list of displayable data.
4. To exit the Info menu press
key (detail 2 Figure
1.16 p. 21);
5. fit the transparent cover (detail G Figure 1.2 p. 9) by
screwing in the fixing screws;
Table 6.2 p. 51 shows the list of Info menu displayable data.
Table 6.2 List of displayable data from menu Info
Info code
Description
Domestic hot water probe temperature
Outdoor probe temperature
Blower speed
Not used temperature
Not used temperatures
d0
d1
d2
d3
d5 - d9
6.8BOILER MODULE HEATING
TEMPERATURE SETTING
Do not change space heating setpoint set on the boiler during
first startup.
6.9DHW TEMPERATURE SETTING
You can set the temperature using keys "+" and "-" of the DHW
circuit
(detail 5 Figure 1.16 p. 21):
1. remove the display transparent cover (detail G Figure
1.2 p. 9) by removing the fixing screws;
2. press the "-" to decrease the temperature;
3. press the "+" to increase the temperature;
4. the temperature adjustment field of the domestic hot water
ranges from a minimum of 35 °C to a maximum of 65 °C;
5. once the setting is completed, fit the transparent cover (detail G Figure 1.2 p. 9) by screwing in the fixing screws.
6.10EFFICIENCY
For increased appliance efficiency:
▶▶ Keep the finned coil clean;
▶▶ Set the maximum water temperature and heating curve at
the actual installation requirement;
▶▶ Reduce repeated switch-ons to the minimum (low loads);
▶▶ Program appliance activation for actual periods of use;
▶▶ Keep water and air filters on plumbing and ventilation systems clean.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
51
7
Maintenance
7MAINTENANCE
7.1WARNINGS
Correct maintenance prevents problems, assures efficiency and keeps running costs low.
The efficiency checks and every other "check and maintenance operation" (see Tables 7.1 p. 52 and 7.3 p. 53)
must be performed with a frequency according to current regulations or, if more restrictive, according to the
provisions set forth by the manufacturer, installer or TAC.
Maintenance operations described herein may exclusively be performed by the TAC or skilled maintenance
technician.
Responsibility for efficiency checks, to be carried out for
the aims of restricting energy consumption, lies with the
system manager.
Any operation on internal components may exclusively
be performed by the TAC.
Environmental or operational heavy conditions
Before performing any operation, switch off the appliance by means of the control device and wait for the end
of the switching off cycle, then disconnect power and
gas supply, by acting on the electrical disconnector and
gas cock.
In environmental or operational conditions particularly
heavy (for example: heavy-duty use of the appliance,
salty environment, etc.), maintenance and cleaning operations must be more frequent.
7.2PRE-EMPTIVE MAINTENANCE
7.2.1Heat pump module
For pre-emptive maintenance, comply with the recommendations in Table 7.1 p. 52.
Table 7.1 Guidelines for the preventive maintenance operations
K18 Simplygas
Guidelines for the preventive maintenance operations
visually check of the general condition of the unit and of its air heat exchanger
check the correct operation of the device used for monitoring the water flow
check the % value of CO2
Check of the unit
check that the condensate discharge is clean (If necessary, frequency of the maintenace operation must be increased)
replace the belts after 6 years or 12,000 hours of operation
√ (1)
√
√
√
√
(1) It is suggested to clean the finned coil once every 4 years (Optimal frequency of the cleaning operation is in any case strongly affected by the installation site).
7.2.2Condensing boiler module
For pre-emptive maintenance, comply with the recommendations in Table 7.2 p. 52.
Table 7.2 Guidelines for the preventive maintenance operations
Boiler for K18 Hybrigas
Guidelines for the preventive maintenance operations
check the % value of CO2
check that the condensate discharge is clean (If necessary, frequency of the maintenace
Check of the unit
operation must be increased)
check/restore the air pressure inside of the expansion vessel of the primary hydronic circuit
52
√
√
√
7
Maintenance
7.3SCHEDULED ROUTINE MAINTENANCE
7.3.1Heat pump module
For scheduled routine maintenance, perform the operations in Table 7.3 p. 53, at least once every 2 years.
Table 7.3 Scheduled routine maintenance
K18 Simplygas
Routine scheduled maintenance (to be performed at least once every TWO YEARS)
clean the combustion chamber
clean the burner
Check of the unit
clean the electrodes of ignition and flame sensing
check that the condensate discharge is clean
√ (1)
√ (1)
√
√
(1) Only in case the analysis of combustion products is non-compliant.
7.3.2Condensing boiler module
For scheduled routine maintenance, perform the operations in Table 7.4 p. 53, at least once every 2 years.
Table 7.4 Scheduled routine maintenance
Boiler for K18 Hybrigas
Routine scheduled maintenance (to be performed at least once every TWO YEARS)
clean the burner
clean the electrodes of ignition and flame sensing
Check of the unit
check that the condensate discharge is clean
check integrity and positioning of the sealed chamber gasket
check/clean the primary heat exchanger
7.4PERIODS OF INACTIVITY
Avoid emptying the installation
Emptying the system may cause damage due to corrosion of the water pipes.
Deactivate the system in winter
Should you intend to stop the appliance in the winter
season, ensure at least one of the following conditions:
1. anti-icing function active (Paragraph 3.4 p. 30);
2. sufficient anti-icing glycol (Paragraph 3.5 p. 30).
Prolonged periods of inactivity
▶▶
S hould you foresee to leave the appliance inactive for a long
period of time, disconnect it from the electrical and gas
mains. These operations must be performed by Qualified
Personnel.
How to deactivate the appliance for long periods of
time
1. Switch the appliance off (Paragraph 6.2 p. 47).
2. O
nly when the appliance is completely off, power it off
with the main switch/disconnector switch (Detail GS in
Figure 4.2 p. 36).
3. Close the gas valve
4. If necessary, add water with glycol (if the appliance is
disconnected from the power and gas mains, the active
anti-icing protection is missing, Paragraph 3.4 p. 30).
How to reactivate the appliance after long periods of
√
√
√
√
√
inactivity
Before reactivating the appliance, the operator/maintenance technician of the system must first of all:
„„ Check whether any maintenance operations are required (contact the TAC; see Paragraphs 7.2 p. 52 and
7.3 p. 53).
„„ Check content and quality of the water in the system, and
if necessary top it up (Paragraphs 3.7 p. 31, 3.6 p. 30
and 3.5 p. 30).
„„ Ensure the flue gas exhaust duct is not obstructed, and
that the condensate drain is clean.
After completing the above checks:
1. Open the gas cock and ensure there are no leaks; should
gas smell be noticed, close the gas cock again, do not
switch any electrical devices on and request intervention
by Skilled Personnel.
2. P
ower on with the main power supply switch (GS, Figure
4.2 p. 36).
3. S witch on the appliance using the provided control device (OQLT019, OCDS007 or external request, Paragraph
4.4 p. 36).
7.5TEMPORARY STOP COMMAND OF THE
FAN
During some maintenance operations the air flow from the fan
may be annoying for the operator.
It is possible to stop temporarily the fan by acting on the
GHP10 board as follows:
1. E nter Menu 2 in Parameter "_27", display must show "2._27"
(procedure Paragraph 6.4 p. 48).
2. Press button
: display shows the blinking code "OFan".
3. To stop the fan press again button
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
.
53
8
Diagnostics
To enable the fan operation again:
4. Accedere nel Menu 2 al Parametro "_28", sul display deve
comparire "2._28" (procedura Paragrafo 6.4 p. 48).
5. Press button
: display shows the blinking code "IFan".
6. Press again button
.
To exit the Menu 2 and return to the main screen:
7. Press button
until the rightmost digit shows letter "E"
(Exit), then press button
8. Press again button
(Exit), then press button
.
until the leftmost shows letter "E"
.
Limit the time you use this function to the minimum effectively needed. The system cancels the fan stop automatically after 15 minutes.
8DIAGNOSTICS
8.1HEAT PUMP BOARD CODES
Table 8.1 Informative codes
CODES
406
DESCRIPTION
Outdoor temperature below operational limits
430
Generator protection cycle activated
435
Gas valve antifreeze function activated
452
Defrosting cycle activated
457
Generator anti condensation cycle activated
458
Service request filtering activation
459
Possible flue obstruction
462
479
Pre-ignition phase
Heating antifreeze function activated
Info (I)
The code is reset automatically when the triggering condition ceases.
The event indicates the activation of the protection cycle in case of high flue
temperature.
It is activated when the anti icing cycle starts and it is stopped when the anti icing
cycle ends.
The code clears automatically when execution of defrosting ends.
The anti-condensation cycle ensures that once the flame is turned on, it stays on
until the conditions that guarantee the absence of condensation occur.
The message appears when there are too frequent requests for activation, and so
the appliance establishes a minimum turn-on and turn-off time before switching
off or on again.
The control informs that, after flame ignition , the temperature measured by the
flue probe is not the expected one; this could be due to a possible flue discharge
duct obstruction.
The event indicates that the unit is performing the pre-ignition cycle.
The code clears automatically when anti-icing function execution ends.
Table 8.2 Operative codes
CODES
401
402
54
Warning (u)
Error (E)
NA
Contact the TAC.
Contact authorised Technical Assistance
405
DESCRIPTION
Limit thermostat trip
Flue gas thermostat trip
Outdoor temperature exceeding operational limits
407
High generator temperature
Reset is automatic when the triggering
condition ceases.
408
Flame controller error
NA
410
Low hot water flow
Reset is automatic when the triggering
condition ceases.
411
Insufficient rotation of oil pump
Reset occurs automatically 20 minutes
after the code is generated.
412
Flame controller lockout
Reset is automatic up to 4 attempts (in
about 5 minutes).
413
Flame controller communication error
Reset is automatic when the triggering
condition ceases.
414
415
Flame controller not compatible
Flame controller parameters error
NA
NA
416
Hot water delivery temperature probe
fault
NA
NA
Reset is automatic when the triggering condition ceases.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
Contact the TAC.
Check and clean water filters on the system.
Check for air in the system.
Check water flow pump.
Power cycle the appliance.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
Gas supply check.
If the code persists or in case of doubt, contact the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
Contact the TAC.
Contact the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
8
Diagnostics
CODES
DESCRIPTION
417
Hot water inlet temperature probe fault NA
420
Generator temperature probe fault
NA
422
Water flowmeter fault
NA
424
Flue gas temperature probe fault
Reset is automatic up to 5 attempts.
425
Clogged condensate drain
NA
426
Generator fins temperature probe fault
Reset is automatic up to 5 attempts.
430
High flue gas or generator fins
temperature
Reset is automatic when the triggering
condition ceases.
435
Gas valve temperature probe fault
Reset is automatic when the the functioning probe is restored.
436
Blower fault
Reset occurs automatically 20 minutes
after the code is generated.
438
Internal flame controller error
Reset occurs automatically 10 seconds
after the code is generated.
439
Fan fault
440
Oil pump inverter fault
The system tries to resolve the anomaly
once; if not successful, warning 461 is
generated.
Reset is automatic when the triggering
condition ceases.
441
Parasitic flame lockout
NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
442
Flame loss
Reset occurs automatically 10 seconds
after the code is generated.
NA
443
Flame controller communication error
Reset is automatic when the triggering
condition ceases.
444
Evaporator temperature probe fault
NA
446
High hot water inlet temperature
447
Hot water inlet temperature below
operational limits
448
High hot water differential temperature
Warning (u)
Check configuration of other heat
generators on the system.
Ensure the secondary circuit pump is
working.
Ensure the exchange terminals are
active.
Check any by-passes between outlet
and inlet.
Reset is automatic and occurs if the
generating condition ceases with
circulating pump on or 20 minutes after
the code is generated with circulating
pump off.
Reset occurs automatically when the
generating cause resolves or 430 seconds after the code is generated.
Check cleanliness of water filters.
Check water flow.
Reset occurs automatically 20 minutes
after the code is generated.
Error (E)
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
Check and clean condensate discharge.
Reset occurs automatically when the condition that has generated the code ends.
It is also possible to make the reset following one of procedures
shown in Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
NA
NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
NA
Reset occurs automatically when the condition that generated
the code ceases.
If the code shows up again or in case of doubt contact the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code shows up again or in case of doubt contact the TAC.
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
55
8
Diagnostics
CODES
DESCRIPTION
460
Defrosting valve has failed to open
461
Fan fault
473
474
Manifold probe fault (connected to
AUX 2)
Manifold probe fault (connected to
AUX 1)
478
High hot water delivery temperature
480
80
Incomplete functional parameters
Invalid configuration parameters
Contact the TAC.
481
Invalid bank 1 parameters
Contact the TAC.
482
Invalid bank 2 parameters
Reset is automatic when the triggering
condition ceases.
Reset is automatic when the triggering
condition ceases.
485
NA
Contact the TAC.
486
487
488
489
Invalid module type configuration
parameters
ROM board fault
pRAM board fault
xRAM board fault
Registers board fault
NA
NA
NA
NA
490
Outdoor temperature probe fault
NA
491
493
Electronic board fault
Weather probe fault (connected to
AUX 1)
Weather probe fault (connected to
AUX 2)
NA
Reset is automatic when the triggering
condition ceases.
Reset is automatic when the triggering
condition ceases.
Contact the TAC.
Contact the TAC.
Contact the TAC.
Contact the TAC.
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
Contact the TAC.
495
Auxiliary boiler fault
NA
492
Warning (u)
Non-blocking event.
Reset is automatic, however, it is advisable to contact the TAC.
Generated as a result of a failed attempt
are restoring warning 439; it is resumed
once the generating cause is resolved.
If the code persists, contact the authorized TAC.
Reset is automatic when the triggering
condition ceases.
Reset is automatic when the triggering
condition ceases.
Check cleanliness of water filters.
Check water flow.
Reset is automatic when the triggering
condition ceases.
Error (E)
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
Contact the TAC.
NA
NA
NA
NA
Contact the TAC.
NA
NA
The reset may be done following one of procedures shown in
Paragraph 6.6.1 p. 50.
If the code persists, shows up again or in case of doubt, contact
the TAC.
NA: Not Applicable
8.2BOILER BOARD CODES
Table 8.3 Operative codes
Code
E01
Icon
RESET
Fault
Flame lockout
Intervention
Make sure that the boiler and gas meter gas valves are open.
Press the reset button (detail H Figure 1.2 p. 9). As soon as the error code
disappears from the display, the boiler will restart automatically.
If the code persists, shows up again or in case of doubt, contact the TAC.
E02
RESET
Safety thermostat (95 °C)
E03
RESET
Flue safety thermal fuse (102 °C)
E04
56
Low system water pressure
E05
E06
E15
E16
E18
SERVICE
SERVICE
SERVICE
SERVICE
SERVICE
Heating probe
DHW probe
Return probe
Blower
Low water flow
E21
SERVICE
Generic internal electronic board error
E22
SERVICE
Parameter programming request
E35
RESET
Parasitic flame
E40
SERVICE
Supply voltage
Press the reset button (detail H Figure 1.2 p. 9). As soon as the error code
disappears from the display, the boiler will restart automatically.
If the code persists, shows up again or in case of doubt, contact the TAC.
Contact the TAC.
If the system pressure is below 1,5 bar fill the system as described in Paragraph
 p. 31.
If the code persists, shows up again or in case of doubt, contact the TAC.
Contact the TAC.
Contact the TAC.
Contact the TAC.
Contact the TAC.
Contact the TAC.
Cut off power supply from the main switch and then restore it. As soon as the
error code disappears from the display, the boiler will restart automatically.
If the code persists, shows up again or in case of doubt, contact the TAC.
Cut off power supply from the main switch and then restore it. As soon as the
error code disappears from the display, the boiler will restart automatically.
If the code persists, shows up again or in case of doubt, contact the TAC.
Press the reset button (detail H Figure 1.2 p. 9). As soon as the error code
disappears from the display, the boiler will restart automatically.
Contact the TAC.
8
Diagnostics
Table 8.4 Active functions signaling codes
Code
F08
F09
F28
F33
Function
Heating antifreeze function activated
DHW antifreeze function activated
Anti-legionella
System air purge cycle in progress
Intervention
Wait until the operation is completed.
Wait until the operation is completed.
Wait until the operation is completed.
Wait until the operation is completed.
8.3WATER PUMP ALARM CODES OF HEAT
PUMP MODULE
Table 8.5 Water pump alarm codes
LED
Steady green light
Fast blinking green
light
Alternately blinking
between green and
red light
Blinking red light
OFF
Meaning
Pump ON
Operational status
Pump runs according to setup
---
Pump in stand-by
Pump ready but not
running
Pump out of order
No power supply
Pump will start as soon as the
error is cleared
Pump blocked
No voltage on electronics
Cause
Normal operation
Remedial action
---
Normal operation
---
Undervoltage U<160 V or overvoltage
U>253 V
Check power supply voltage 195 V
<U<253 V
Disconnect PWM connector until LED
turns into permanent green light, then
reconnect PWM connector
Check fluid temperature and ambient
temperature
Replace the pump
Air bubbles in water circuit
Module overtemperature Motor
temperature too high
Pump does not restart autonomously
The unit has never received a service
request since it has been powered
electrically, or more than one hour has
elapsed since the last service request
was completed; in these cases the
control electronics of the appliance
do not power the pump. It is a normal
operating mode
The pump is not connected to the
power output supplied by the control
electronics of the appliance
LED failure
Failure of electronics
The control electronics of the appliance
do not activate the power output of
the pump although there is a service
request
---
Check cable connection
Check if pump is actually running
Replace the pump
If the power output of the pump does
not supply voltage, check the cabling
of the electrical panel; if no anomaly is
found, try replacing the GHP10 board
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
57
Appendices
9APPENDICES
9.1PRODUCT FICHE
Figure 9.1
Table 8
COMMISSION DELEGATED REGULATION (EU) No 811/2013
Technical parameters for heat pump space heaters and heat pump combination heaters
Model(s):
K18 Hybrigas
Air-to-water heat pump:
yes
Water-to-water heat pump:
no
Brine-to-water heat pump:
no
Low-temperature heat pump:
no
Equipped with a supplementary heater:
yes
Heat pump combination heater:
no
Parameters shall be declared for medium-temperature application.
Parameters shall be declared for average, colder and warmer climate conditions.
Item
Symbol
Value
Unit
Item
Symbol
Value
AVERAGE CLIMATE CONDITIONS
Seasonal space heating
ηs
Prated
33,3
kW
126
Rated heat output (*)
energy efficiency
Declared coefficient of performance or primary energy
Declared capacity for heating for part load at indoor
ratio for part load at indoor temperature 20 °C and
temperature 20 °C and outdoor temperature Tj
outdoor temperature Tj
24,3
kW
Tj = -3 °C
PERd
111
19,3
kW
Tj = +1 °C
PERd
127
15,3
kW
Tj = +4 °C
PERd
140
10,3
kW
Tj = +8 °C
PERd
141
5,0
kW
Tj = +12 °C
PERd
143
197
GJ
COLDER CLIMATE CONDITIONS
Seasonal space heating
ηs
Prated
32,4
kW
120
Rated heat output (*)
energy efficiency
Declared coefficient of performance or primary energy
Declared capacity for heating for part load at indoor
ratio for part load at indoor temperature 20 °C and
temperature 20 °C and outdoor temperature Tj
outdoor temperature Tj
Tj = -3 °C
Tj = +1 °C
Tj = +4 °C
Tj = +8 °C
Tj = +12 °C
Annual energy consumption
Pdh
Pdh
Pdh
Pdh
Pdh
Q HE
Tj = -12 °C
Tj = -7 °C
Tj = -1 °C
Tj = +5 °C
Tj = +10 °C
Tj = operation limit
temperature
For air-to-water heat pumps:
Tj = –15 °C (if TOL < –20 °C)
Pdh
Pdh
Pdh
Pdh
Pdh
24,0
19,8
14,6
9,4
5,2
kW
kW
kW
kW
kW
Pdh
32,4
kW
Pdh
26,6
kW
Annual energy consumption
Q HE
Tj = -12 °C
Tj = -7 °C
Tj = -1 °C
Tj = +5 °C
Tj = +10 °C
Tj = operation limit
temperature
For air-to-water heat pumps:
Tj = –15 °C (if TOL < –20 °C)
58
Pdh
Pdh
Pdh
Pdh
Pdh
Q HE
26,4
21,2
16,0
10,8
5,2
137
kW
kW
kW
kW
kW
GJ
Tj = +6 °C
Tj = +8 °C
Tj = +10 °C
Tj = +12 °C
Tj = +14 °C
%
%
%
%
%
%
%
PERd
PERd
PERd
PERd
PERd
97
113
127
141
143
%
%
%
%
%
PERd
92
%
PERd
95
%
240
GJ
WARMER CLIMATE CONDITIONS
Seasonal space heating
ηs
Prated
37,2
kW
131
Rated heat output (*)
energy efficiency
Declared coefficient of performance or primary energy
Declared capacity for heating for part load at indoor
ratio for part load at indoor temperature 20 °C and
temperature 20 °C and outdoor temperature Tj
outdoor temperature Tj
Tj = +6 °C
Tj = +8 °C
Tj = +10 °C
Tj = +12 °C
Tj = +14 °C
Annual energy consumption
Unit
PERd
PERd
PERd
PERd
PERd
120
136
140
141
143
%
%
%
%
%
%
Appendices
Figure 9.2
Bivalent temperature
T biv
TOL <
Tdesignh
Power consumption in modes other than active mode
P OFF
Off mode
0,000
P TO
Thermostat-off mode
0,021
P SB
Standby mode
0,005
P
Crankcase heater mode
CK
Other items
°C
kW
kW
kW
kW
variable
Capacity control
Sound power level, indoors/
outdoors
L WA
- / 65
dB
For air-to-water heat pumps:
Operation limit temperature
Heating water operating limit
temperature
Supplementary heater
Rated heat output
TOL
-22
°C
WTOL
65
°C
Psup
17,6
kW
Type of energy input
For air-to-water heat pumps:
Rated air flow rate, outdoors
For water- or brine-to-water
heat pumps: Rated brine or
water flow rate, outdoor heat
exchanger
monovalent
__
4000
m³/h
__
-
m³/h
(*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for
heating Pdesignh , and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating
sup(Tj) .
Additional information required by COMMISSION REGULATION (EU) No 813/2013, Table 2:
mg/
NO x
32
Emissions of nitrogen oxides:
kWh
Installation, use and maintenance manual – K18 Hybrigas EASY Indoor
59
22/05/2017
17MEDSDC011
Revision: A
Robur is dedicated to dynamic progression
in research, development and promotion
of safe, environmentally-friendly, energy-efficiency products,
through the commitment and caring
of its employees and partners.
Code: D-LBR836
Robur mission
Robur S.p.A.
advanced technologies
for climate conditioning
via Parigi 4/6
24040 Verdellino/Zingonia (BG) Italy
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www.robur.it robur@robur.it
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