Electric Heating Company Fusion Comet User manual

The COMET Range of Boilers
the ultimate solution for central heating
INSTALLATION
&
TECHNICAL MANUAL
If you require any further assistance:
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
or visit our website www.electric-heatingcompany.co.uk

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INTRODUCTION
Please read and follow the installation and operating instructions
carefully, to ensure the long life and reliable operation of this
appliance.
The Electric Heating Company may make minor changes
if necessary in the appliance that will not be shown in the
operating instructions, so long as the main features of the boiler
remain the same.
All boilers come with a 24 month warranty that covers all
defects originating from faulty materials and workmanship in the
manufacture of the boilers.
The warranty covers the replacement of any faulty parts and
labour costs.
The warranty will not cover any damage to the boiler from poor
or incorrect installation work.
The warranty will not cover any call out charges that have not
been organised by the Electric Heating Company Ltd.
The warranty will not cover water leaks into the boiler. All
plumbing joints must be checked.
The warranty card must be completed and sent back to The
Electric Heating Company as soon as possible for registration.
An internal Magnetic Filter is fitted to the Boiler and it must be
cleaned at least annually. (Note: Failure to clean the Magnetic
Filter may result in boiler shutdown). Warranty calls will not be
covered for this repair.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental cap-
abilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use
of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Page Contents
INTRODUCTION 3
PREPARATION 4
INSTALLATION 5
ELECTRICAL CONNECTIONS AND CONTROLS 9
EXTERNAL CONTROL WIRING 11
CONTROL PANEL CONNECTIONS 12
EXTERNAL BOILER WIRING 13
BOILER DIMENSIONS 13
USER INSTRUCTIONS 15
FAULT FINDING 16
TECHNICAL SPECIFICATIONS 17

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PREPARATION
Instructions and Building Regulations
This appliance must be fitted in accordance with the following
instructions.
The Local Building Regulations
The Building Regulations
The Building Standards, (Scotland-consolidated) Regulations.
Local water bylaws. British Standards- code
of practice
BS EN 12828:2003
Heating systems in buildings. Design for water-based heating sys-
tems.
BS EN 12831:2003
Heating systems in buildings. Method for calculation of the de-
sign heat load
BS EN 14336:2004
Heating systems in buildings. Installation and commissioning of
water based heating systems
BS 7671:2008
Requirements for electrical installations. IEE Wiring Regulations.
Seventeenth edition.
BS EN 13831:2007
Closed expansion vessels with built-in diaphragm for installation
in water
C.O.S.H.H.
Materials used in the manufacture of this appliance are non-haz-
ardous and no special precautions are required when fitting or
servicing this appliance.
PREPARATION
1. Load Check
A load check should be taken into consideration when installing
high output boilers.
2. Boiler location
The boiler must be fitted on a wall that will provide an adequate
fixing, and should be fitted in a location that the boiler and pipe-
work are not subject to frost and damp conditions.
3. Central heating (design & installation)
Detailed recommendations are given in BS EN 12828:2003, BS
6700: 2006+A1: 2009 and CP 342-2:1974
Pipes forming part of the useful heating surface should be
insulated to prevent any potential heat loss or frost damage (BS
6700:1997).
Drain valves should be fitted at the lowest point of the system
pipe work in an accessible position.
Drain valves should be in accordance with BS 2879: 1980 and
copper tube to BS EN 1057: 1996. is recommended.
LOCATION
The boiler can be installed in almost any location within a do-
mestic or commercial property, however consideration should be
given to future maintenance. Never leave the boiler switched off
if there is danger of having temperatures below 0°C in the room
where it is located.
We recommend that a minimum clearance of 450 mm should be
allocated for the removal of the front cover and adequate access
to the boiler plumbing and the internal electrical connections. A
50 mm allowance should be made at either side of the boiler to
allow free flow air into the boiler case and allow access to screws
on the boiler case
THE BOILER MUST BE INSTALLED IN THE UPRIGHT POSI-
TION, FAILURE TO DO SO WILL INVALIDATE THE WARRAN-
TY

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INSTALLATION
1. General
The boiler must be installed by a professional plumber or heat-
ing engineer and must be connected to the public low voltage
network by a competent person. For systems that require a three
phase electrical supply we strongly recommend this is installed
by a 17th Edition certified Electrical Engineer.
The Electric Heating Company Ltd will not be held responsible
for faulty installations which are performed by un- qualified
tradespersons.
2. Pipe Connections
All Fusion Electric Boilers have a 22mm compression connection
at the boiler’s flow and return pipes. Please note that the boilers
are supplied with blank washers fitted for transit purposes. These
must be removed before connections to pipe-work can be made.
The flow (red) and return (blue) are clearly marked on the external
case and under no circumstances should these connections be
reversed. Hot connections are not recommended at the boiler for
future maintenance and boiler disconnection. Lockshield valves
are recommended.
3. Case Removal
Remove outer screws at the bottom of the boiler and pull the front
cover outwards taking care to remove internal earth connections.
Earth connections must be re-connected before the boiler case is
re-installed.
4. Isolation Valves
We recommend that lockshield isolation valves are fitted on the
flow and return pipework. Such valves must be ‘full way’ and
not ‘ball valves.’ The installation of ‘ball valves’ in the flow and
return pipework will reduce the recommended flow rate through
the boiler and promote premature boiler shutdown.
5. Auto air vents
An auto air vent is integral within the boiler however an addi-
tional auto air vent must be fitted at the cylinder coil if the boiler
is being used for central heating and domestic hot water.
6. Boiler Sizing
Calculate the ‘space heating’ requirements in accordance with BS
EN 12831 and BS EN 14336. If the boiler is to heat the domestic
hot water, an additional allowance of 3kW (10,239 Btu’s) should
be made to the ‘space heating’ calculation.
7. Insulation
Where practical, and if at all possible, we recommend that all
pipe-work be insulated, in particular the primary pipe-work
with-in a boiler cupboard. This is to reduce heat loss and reduce
high cupboard temperatures from exposed pipe-work. (BS 6700:
2006+A1: 2009).
8. System Design
The boiler has an integral automatic bypass valve fitted which
should be set to the relevant settings to allow the minimum flow
rates to pass through the boiler (8 l/min) when all radiator thermo-
stats and zone valves are closed.
Allowance should be made for a radiator to be installed within
the heating circuit and locked open. This will be located in the
room that has the room thermostat installed.
To comply with building regulations, Part L and Part J (in Scot-
land), room and cylinder stats must be fitted.
9. Water Connections
Provisions must be made for the replacement of water lost from
the heating system (sealed systems). Reference should be made
to BS EN 14336 for the method of filling and make up of water.
There must be no direct connection between the boilers central
heating system and the main water supply. When mains water is
required to fill the system directly, all local water bylaws must be
observed, and any connection made must be disconnected after
use.
10. Flushing
When installing a new Boiler to existing radiators & pipework
these items should be flushed before a new boiler is installed.
New boiler installations also require to be flushed before bolier
start up. This is to ensure that no debris is trapped in the flow sen-
sor as this may result in boiler failure.
11. System pressures
All boilers are tested to 4.0 bar. The normal working pressure of
the boiler should be set to approx 1.0 / 1.5 bar. All sealed sys-
tems should comply with the relevant building regulations and
standards, including BS EN 13831 – Specification for Expansion
Vessels.
Please Note:
In order to protect the Flow Sensor located within the boiler, it is
imperative that the pre-installed magnetic filter is removed and
cleaned at least annually. Failure to carry out this action will in-
crease contamination of the boiler by system residue.

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INSTALLATION
ELECTRIC BOILER INTERNAL LAYOUT
Figure 1
Electrical ‘mains’ input
connection block
 [1] - StainlessSteelHeatExchanger
 [2] - FlowSensor
 [3] - PressureSensor
 [4] - SafetyValve
 [5] - CirculatingPump
 [6] - SafetyTemperaturelimiter
 [7] - Returnconnection
 [8] - Flowconnection
 [9] - PowerBoard
 [10] - ControlModule
 [11] - AutomaticVent
 [12] - ExpansionVesselandconnection
 [13] - By-passValve
 [14] - MagneticFilter
 PF - Internal‘mains’phaseconnectionsfromthePNconnectionblock
 PN - Incoming‘mains’cableconnectionblock
 WP - Electriccableaccess
 M - Boilerfixingpoints
 RP - RoomThermostatvoltfreeconnection

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INSTALLATION
12. System types
The Fusion Comet range of boilers can be used in various system
designs. Please refer to The Electric Heating Company for more
details on our Fusion Boiler for under floor heating. We are able
to supply a heat pack that contains the relevant control valves,
cylinder and room thermostats required to configure an ‘S’ plan
heating system. The heat pack has all the necessary components
that you need to connect the systems controls and plumbing con-
figurations for ‘S’ Plan design.
We recommend the use of thermostatic radiator valves on all ra-
diators except in the room that has the wall thermostat fitted. This
radiator should be fitted with lock shield valves and left in the
fully open position.
The boiler has an integral automatic bypass valve fitted which
should be set to the relevant settings to allow the minimum flow
rates to pass through the boiler (8 l/min) when all radiator thermo-
stats and ” zone valves are closed.’
Systems should be designed to meet the current building regula-
tions in force at the current time.
13. Hanging the Boiler
1. Hang the boiler in a vertical position on the fixing points and
screws provided, with the flow and return connections to the
bottom of the boiler, maintaining the clearances as per Figure
12 of this manual.
2. Connect the boiler to a heating system that is equipped with
isolation valves (see Figures 4 & 5)
3. Fill the heating system with treated water, which will substan-
tially extend the life of the heating coils. See item 14 ‘System
Protection’ below.
4. Connect the boiler to the ‘mains’ electrical system as per Figures
6, 8, 9 & 11 using conductors sizes as per as specified in the
Technical Specification on page 17 of this document.
5. Connect the room thermostat / Programmer using the two
control conductors marked RP as in Figure 7 & 10.
6. For all other electrical connections refer to the ELECTICAL
CONNECTIONS & CONTROL section of this manual.
14. System protection
Failure to protect the system will invalidate the manufacturer’s
warranty.
After the system has been installed the cleansing and inhibiting
procedure must be carried out as follows:
Procedure:
1. Fill the system with cold mains water to the recommended
pressure 1.5 bar and check for leaks, then drain the system
thoroughly making sure all drain cocks are fully open and that
the system is completely drained.
2. Add Fernox Heavy Duty restorer through the header tank or
via filling loop at the recommended dose. One bottle must be
used as a minimum per dwelling. If you are unsure of the cor-
rect dose rate, contact Fernox.
3. Re-fill the system and circulate the Heavy-Duty Restorer prior
to the boiler being fired up, then commission the system in
the normal way. The cleansing agent must be in the system
for a minimum 1 hour with the system at normal operating
temperature. A longer period of time would be more beneficial
to the cleansing process especially if excess flux was used.
4. Drain and flush the system thoroughly to remove the cleaning
agent and any debris or contaminant. This is a critical part of
the cleaning process and must be carried out correctly. Use a
rinse test meter (TDS), such as the Fernox CTM. The reading
must be within 10% of the mains ppm value.
5. Then add the Fernox Protector (Copal MB1 or Super concen-
trate). This will protect against the formation of scale, corrosion
and microbiological growths. It is crucial however, that for
the protector to work correctly, the system must be properly
cleansed and flushed.
6. The label included within the Fernox Protector carton should
be completed and attached adjacent to the boiler.
7. We recommend inhibitor levels are checked on an annual basis
(usually during the service) or sooner if the system content is
lost. This should be carried out using a Fernox inhibitor Test
Kit.
8. Fernox Technical Service Helpline on 0870 870 0362 for further
assistance
15. Start-up / Commissioning
1. Turn ‘mains’ power on at main Isolating Switch
2. Make sure that all external controls are not calling for heat at
this stage.
3. Switch the boiler on by pressing the button)
4. Check to see that the correct installation water pressure is ap-
prox (1.0/1.5 bar) by pressing the right arrow key and correct
as necessary. If the A indicator flickers the pressure is too low.
5. Vent the Pump in the following way:
• Make sure the system is pressurized to the correct pressure
• Carefully undo the venting screw (see figure 2)
• Vent until you see running water and all air from the boiler has
been released
• You may need to repeat this process
• Check the system pressure and top up if required
• Re tighten the vent screw
6. Turn on external controls to call for heat.
7. Set the temperature of the boiler to your desired temperature
(normally 650C).
Vent Screw
Pump Speed Screw
Figure 2 Figure 3

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Temporary
Filling Loop
Mains Water
Supply
Temporary
Filling Loop
Mains Water Supply
INSTALLATION
Figure 5
Figure 4

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Boiler Protection
The recommended protection for hard wired boilers are as fol-
lows:
Model No Boiler size Protection (per phase)
FUSION 24 kW 24kW BOILER 40 AMP Protection
FUSION 14.4kW 14.4kW BOILER 80 AMP Protection
FUSION 12kW 12kW BOILER 63 AMP Protection
FUSION 9kW 9kW BOILER 45 AMP Protection
FUSION 6kW 6kW BOILER 32 AMP Protection
External Controls
We recommend the use of the EHC Select 107XL Programmer
and EHC TLX 4101 room stat for heating only installations
For Heating and Hot water installations, we recommend the use
of the EHC ‘Heat Pack’ which includes the EHC Select 207XL
programmer.
The EHC ‘Heat Pack’ will incorporate all the relevant parts to
comply with current building regulations i.e. Motorized valves to
control the heating and hot water circuits and Room and cylinder
thermostats to control the room and water temperatures. This will
also provide boiler interlock. The use of TRV’s alone will not pro-
vide boiler interlock
We recommend the use of TRV’s, however they must not be used
in the room that has the room thermostat fitted.
Note: This control method is recommended by TACMA (The As-
sociation of Control Manufactures) in order to comply with the
current Building Regulations.
ALL WIRING MUST BE CARRIED OUT IN ACCORDANCE WITH
CURRENT IEE BS7671 WIRING REGULATIONS
ALL ELECTRICAL CONNECTIONS MUST BE MADE BY A QUALI-
FIED TRADESPERSON
A load check should be carried out to ensure that there is a sufficient
current and voltage for the intended boiler installation. Consideration
should be taken into account with regard to the remainder of the
properties load requirements.
All boilers must be protected at the meter position with a double pole
fused switch with a minimum of 3mm contact separation. If the boiler
is not fitted local to the meter position then an isolation switch must
be fitted local to the boiler
THIS APPLIANCE MUST BE EARTHED.
All pipe-work must be earthed in accordance with the IEE BS7671
Wiring Regulations.
After completion of all electrical works, an electrical safety check
should be carried out i.e. short circuit, earth continuity, resistance to
earth and polarity check, and all relevant Test Certificates completed.
Never open the front cover of the boiler until all power supplies to the
boiler have been disconnected.
ELECTRICAL CONNECTIONS
The boiler connections are clearly marked inside the boiler L W N
(24hr LIVE)
The 24hr live is the permanent live connection to the boiler from
the mains supply. External controls will require an independent
fused spur supplied from the consumer unit., however this fused spur
should be supplied by the same power source as the boiler itself.
ELECTRICAL CONNECTIONS AND CONTROLS
Electrical ‘mains’ connection
Figure 6

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After the cleansing and protection of the system has been carried out,
set the external controls to the customers selected times.
If an off-peak electric meter has been installed by an Electricity Com-
pany to supply OFF-peak rate electricity at selected times, the ap-
propriate settings should be entered into to the system programmer to
take advantage of the OFF-peak rate electricity
The boiler has an inbuilt pressure sensor. If the boiler has been
switched on with a low or no water content, the system will sense
this and prevent the boiler from sending power to the main elements.
After the system has been filled with water and has had a cold flush
the Fernox cleanser should be added, the system filled with water,
purged of air and set to the correct pressure of 1.5 bar (sealed sys-
tems). At this point the main power may be switched on.
At this stage you may carry out the cleansing and protection of the
system. Refer to the installation section of this manual. (See page 7).
Programmer/Stat Connections
The boiler PCB has a voltage free connection for the controls (RP) &
(NA). Under no circumstances should 240V be connected to these
controller block connections as this will damage the boiler’s PCB and
Void the Manufacturers warranty.
The stat / programmer connections are clearly marked within the
boiler.
Only after all connections have been made and checked should the
system be filled with water and set to the proper pressure 1.5 bar
(Sealed systems)
Check the system for leaks. If water leaks into the boiler this may
damage the boiler electrics and the manufacturers warranty will be
invalid.
Under no circumstances should the boiler be switched on when the
system is dry.
ELECTRICAL CONNECTIONS AND CONTROLS
‘NA’ – Shower Sensor
connection (optional)
‘RP’ - Room Stat
connection
Figure 7

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EHC SELECT 107XL PROGRAMMER TLX4101 ROOM THERMOSTAT
CONTROL
CONNECTIONS
CONTROL
CONNECTIONS
EXTERNAL CONTROL WIRING
Figure 8
Figure 9

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CONTROL PANEL CONNECTIONS
Shower Sensor connection
(Optional)
Figure 10
SAFETY NOTE: ‘RP’, ‘Tzas’ and ‘NA’ are signal conductors only. DO NOT CONNECT ANY VOLT-
AGE to these as this will damage the boiler and invalidate the boilers warranty!
Tzas connections
not used ZTD connections
not used

Room Thermostat


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EXTERNAL BOILER WIRING
BOILER DIMENSIONS
Figure 11
Return Inlet Flow Outlet
Figure 12

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USER INSTRUCTIONS
R
F
P
CONTROL PANEL ControlPanelKey
 A - Waterpressureindicator(bar)
 B - Waterflowrateindicator(l/min)
 C - kWindicator
 D - Watertemperatureindicator(0C)
 E - Digitaldisplay
 F - SummerMode
 G - CallforHeat
 H - Pumpoperationindicator
 I - Returntemperatureflowindicator
 J - Flowtemperatureindicator
 K - Boilerheatingindicator
INDICATORS
Heat Indicator
• ‘on’ – calling for heat
• ‘off’ – the required temperature has been reached – no call for heat is required
• Flickers – NA entry is open – (external boiler interrupt active)
P Pump Indicator
• ‘on’ – pump is active, proper flow rate of water has been reached
• Flickers – lack of flow or insufficient flow rate of water – heating elements are off
Temperature Indicator
• Red light – Boiler is in heating mode
• Green light – Boiler temperature has been reached in radiators
A Indicator flickers – water pressure is not sufficient (below 0.5 bar)
F When boiler is in Summer Mode (i.e. switched off) indicator will blink
I Indicator flickers – relative temperature sensor failure
J Indicator flickers – relative temperature sensor failure
EE Messages on electronic display – data record error
Dashes (- -) on display – parameter out of range or a temperature sensor failure
Figure 13

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USER INSTRUCTIONS
1. General
Unlike other system boilers such as Gas, Oil and Propane the
FUSION ‘Comet’ range of electric boilers require no ignition or
lighting sequence to be executed by the end user. All the end user
is required to do is ensure that the system is filled with water and
the room thermostat or programmer is calling for heat.
2. Boiler Operation
2.1 Switch the boiler on by pressing the button. (Note: When
switching the boiler off use the same button by pressing
and holding it in for 3 seconds.)
2.2 The recommended Water Pressure is approx 1.0/1.5 bar and
this can be checked by pressing the button until indicator
A is illuminated. The water pressure can be adjusted by con-
necting the external filling loop and pressurizing to the desired
pressure. Note: the filling loop must be disconnected after the
system has been re -pressurized.
2.3 First set the required Boiler Temperature (we recommend a
setting of 65
0C) by pressing the button until only indicators
D and K are illuminated. Press the button or the button
until the desired temperature setting is achieved.
2.4 Ensure the room thermostat is switched on and is calling for
heat. If the boiler is not yet at the desired heat setting then
indicators D, G, H, I, J & K will be illuminated with indictor K
illuminated in red. Once the room has reached the required
setting the K indicator should change from red to green. Refer
to the Control Panel diagram above to learn how to adjust to
the right temperature to make the boiler work comfortably and
economically.
2.5 The boiler Flow Rate is set at 8 l/min during the installation
of the boiler. To check this setting then press the button a
number of times until only indicator B is illuminated and then
read the figure on the digital display. If the figure is well below
the 8 l/min figure then call a Service Engineer for assistance.
2.6 To check the amount of kW energy being used by the boiler at
any point in time then press the button a number of times
until only indicator C is illuminated and then read the figure
on the digital display.
2.7 When indicator H is illuminated the pump is running
3. Temperature Setting
We recommend the boiler temperature be set to 650C. Raise or
lower the temperature in your installation with the buttons on
the right hand side of the control panel as per 2.3 in the previous
section.
ATTENTION: Should the temperature on the front panel be set
too low the desired room temperature may not be achieved.’
4. Summer Setting. (‘Stand by’ Mode)
The customer has the option to switch the boiler onto ‘stand-
by’ mode during summer months and this can be carried out by
pressing the “button and holding this in for 3 seconds.’
All indicators will go off except the F indicator which will inter-
mittently illuminate.
IMPORTANT - DO NOT SWITCH THE BOILER OFF AT THE
MAINS SWITCH
In the ‘stand-by’ mode all the boiler functions are switched off ex-
cept the circulation pump. This is activated for 15 minutes each
day which protects the boiler and the whole central heating sys-
tem from being blocked and silted up. In this ‘stand by’ mode the
circulation pump will run each day at the same time. (e.g. If you
switch the boiler to ‘stand by’ at 6pm then the circulation pump
will run every day at 6pm for 15 minutes) To return to a ‘Winter’
mode setting then press and hold the button for 3 seconds
again.
5. Winter mode
In the Winter mode setting the digital display will be active and
will show the temperature of the water at various points within
the boiler. Those indicators which are illuminated will show the
current status of the boiler. If the boiler is being called for heat
by the thermostat then the G, H, I, J & K indicators will be illumi-
nated. In the winter mode both the two port valves are active and
they will direct heat as required.
Note: When in diagnostic mode of the Display (i.e. using the
arrow buttons), and there has been no activity (i.e. buttons
pressed) for 60 seconds the Display will revert to its normal
mode.

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FAULT FINDING
Symptom Reason Procedure
The indicators and LCD display
on the front panel are off
No power to the boiler Check electricity mains power supply
Main over heat stat cut-out Check the temperature safety cut-out investigate cause
- possibly fault / return sensors or power board
The “A” indicator flickering
Insufficient water pressure Check water pressure in display panel and increase to 1.5 bar
Pressure Sensor failure Check water pressure in display panel and if display shows
“- - “ then replace Pressure Sensor
The “H” indicator flickering
Pump is blocked
Free Pump by setting the Pump on the highest gearing – See
Figure 3 then unscrew the screw on the Pump housing –
See Figure 2. Move Pump rotor manually.
Water is not circulating through the
Boiler Vent the system: Radiators, Pump and Boiler
Pump not running
Check power available at Pump head, if power available
replace as necessary. If power not available check fuse on
Controller Module and replace if necessary
Flow sensor not operating Check the flow sensor and replace as necessary
‘G’ indicator is flashing but boiler
digital display operating ’NA’ connection open circuit Ensure ‘NA’ connection is closed or if using external control (e.g. Shower Sensor) that this is working correctly
‘G’ indicator flashing ‘NA’ connection open circuit Check ‘NA’ connection - should be closed
‘K’ indicator flickers Failure of inlet temp sensor Replace inlet temp sensor
‘L’ indicator flickers Failure of outlet temp sensor Replace outlet temp sensor
‘G’ ‘H’ & ‘K’ Indicators lit but
boiler not heating
No supply to heating coils from
Power Board.
Check outputs ‘G1’ ‘G2’ & ‘G3’ on Power Board if 230Volts
not present to all replace Power Board
‘G’ ‘H’ & ‘K’ Indicators lit but
boiler only partially heating
One or more heating coils have no
voltage supply from Power Board
Check outputs ‘G1’ ‘G2’ & ‘G3’ on Power Board if 230Volts
not present to all replace Power Board

17
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TECHNICAL SPECIFICATIONS
NB: Voltage free control connections
Boiler Dimensions
Width 418 mm
Height 710 mm
Depth 251.5 mm
The Electric Heating Company Ltd
Unit 40, Block 5
Third Road
Blantyre Industrial Estate
Blantyre
Glasgow
G72 0UP
Tel: [phone] Fax: [phone]
Boiler range Fusion Comet 6kW
(EHCCOM6KW)
Fusion Comet 9kW
(EHCCOM9KW)
Fusion Comet 12kW
(EHCCOM12KW)
Fusion Comet 14.4kW
(EHCCOM15KW)
Fusion Comet 24kW
(EHCCOM24KW)
Pipe entry from boilers Bottom Bottom Bottom Bottom Bottom
Central heating flow & return pipes 22 mm
Min water pressure 1 bar
Max water pressure 3 bar
Expansion vessel 6 lt.
Maximum system water volume about 60 litres at initial system pressure 1,5 bar
Vessel charge pressure 1,5 bar
Safety Class IP22
Dry weight 25kg
Electrical supply 230V 1ph 50Hz 415V 3ph 50Hz
Load/current 26,0 Amp. 39,1 Amp. 52,2 Amp. 62,6 Amp. 3 x 34,8 Amp.
Recommended diameter of mains cable 10mm 16mm 10mm
Heating output 20484Btu 30726 Btu 40968 Btu 49161 Btu 81936 Btu
Temp setting (factory set) 85°C
Min temp setting 20 - 40°C
Overheat Protection 100°C
Pump included Yes
Recommended Pump settings Set to max
Protection 32 Amp. 45 Amp. 63 Amp. 80 Amp. 3 x 40 Amp.
The maximum allowed network impedance 0,39 Ω 0,32 Ω 0,24 Ω 0,22 Ω