Baxi POWER HT+ 1.50 User manual

AustraliaNew Zealand
en
User Guide
Gas fired floor-standing condensing boiler
POWER HT+ 1.50
POWER HT+ 1.70
POWER HT+ 1.90
POWER HT+ 1.110

Dear customer,
Thank you for purchasing this appliance.
Please read this manual carefully before using the product and keep it in a safe place for future reference.
In order to ensure continued safe and efficient operation we recommend that the product is regularly maintained. Our Service
and After Sales organization can assist with this.
We hope you will receive many years of satisfactory service.

Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3.1 User's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.3.3 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.2 Symbols used on the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.3 Abréviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.2.1 Sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.1 Gas/air setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2.2 Low-loss header (accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2.3 System in cascade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.2.4 Settings and safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.1 Description of the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.2 Description of the symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.1 Use of the control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 Modifying the user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Starting up the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.3 Stopping the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3.1 Putting the boiler in Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.4 Frost Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.4.1 Activating Protection mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1.1 Shortcuts menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1.2 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.1.3 List of user parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 Setting the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2.1 Setting the date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.2.2 Language selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2.3 Setting a temporary heating flow temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
6.2.4 Changing the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.5 Forcing domestic hot water production . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2.6 Setting the room temperature set point (On mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2.7 Modifying the domestic hot water production mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.2.8 Setting the domestic hot water temperature set point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.2.9 Setting the room temperature set point (Reduced mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.2.10 Programming a Holiday period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.2.11 Selecting a heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.3 Accessing the information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Contents
7609475 - v02 - 04092014 POWER HT + 3

7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
8.1 Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.1.1 Automatic error code clearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.1.2 Clearing error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.1 Energy savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.2 Room thermostat and settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
10.1 Disposal/recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.2 Terms of warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Contents
4 POWER HT + 7609475 - v02 - 04092014

1 Safety
1.1 General safety instructions
Danger
If you smell gas:
1. Do not use a naked flame, do not smoke, do not
operate electrical contacts or switches (doorbell,
light, motor, lift, etc.).
2. Shut off the gas supply.
3. Open the windows.
4. Trace possible leaks and seal them immediately.
5. If the gas leak is before the gas meter, contact the
gas supplier.
Danger
If you smell flue gases:
1. Switch off the appliance.
2. Open the windows.
3. Trace possible leaks and seal them immediately.
Warning
Do not touch the flue gas pipes. Depending on the
boiler settings, the temperature of the flue gas pipes
may exceed 60°C.
Warning
Do not touch the radiators for long periods. Depending
on the boiler settings, the temperature of the radiators
may exceed 60°C.
Warning
Take precautions with the domestic hot water. De
pending on the boiler settings, the domestic hot water
temperature may exceed 65°C.
Danger of electric shock
Before any work, switch off the mains supply to the
boiler.
1.2 Recommendations
Note
Keep this document close to the place where the ap
pliance is installed.
Note
Never remove or cover labels and data plates affixed
to the appliances. Labels and data plates must be
legible throughout the entire lifetime of the appliance.
Immediately replace damaged or illegible instructions
and warning stickers.
1 Safety
7609475 - v02 - 04092014 POWER HT + 5

Caution
The appliance should be on Summer or Antifreeze
mode rather than switched off to guarantee the follow
ing functions:
Anti-blocking of pumps
Frost Protection
Caution
If the home is unoccupied for a long period and there
is a risk of frost, drain the boiler and the heating sys
tem.
Caution
To enjoy warranty cover, no modifications must be
made to the appliance.
Caution
The frost protection does not work if the boiler is
switched off.
Caution
The integrated protection system only protects the
boiler, not the heating installation
Note
Remove the casing only to perform maintenance and
repair work. Put the casing back in place after mainte
nance and repair work.
Warning
Only qualified professionals are authorised to work on
the boiler and the heating installation.
Note
Keep the boiler accessible at all times.
Caution
Installation of the boiler must be done by a qualified
professional in accordance with prevailing local and
national regulations.
Caution
Install the boiler in a frost-free location.
Caution
Do not stock chloride or fluoride compounds close to
the boiler. They are particularly corrosive and may
contaminate the combustive air. Chloride and fluoride
compounds are present in aerosol sprays, paints, sol
vents, cleaning products, washing products, deter
gents, glues, snow clearing salts.
Caution
Do not neglect to service the boiler. Contact a quali
fied professional or subscribe to a maintenance con
tract for the annual servicing of the boiler.
1 Safety
6 POWER HT + 7609475 - v02 - 04092014

Note
Regularly check the presence of water and pressure
in the heating installation.
Caution
Maintenance work must be carried out by a qualified
professional.
Caution
Only a qualified professional is authorised to clean the
inside of the boiler.
Caution
Only genuine spare parts may be used.
Caution
After maintenance or repair work, check the entire
heating installation to ensure that there are no leaks.
Warning
Ensure correct earthing.
Install the appliance on a solid, stable structure able
to bear its weight.
Warning
Removal and disposal of the boiler must be carried
out by a qualified installer in accordance with local
and national regulations
Caution
If the power cable is damaged, it must be replaced by
the manufacturer, its after sales service or persons
with similar qualifications in order to obviate any dan
ger.
1.3 Liabilities
1.3.1 User's liability
To guarantee optimum running of the installation, you must
abide by the following instructions:
Read and follow the instructions given in the manuals pro
vided with the appliance.
Call on a qualified professional to carry out installation and
initial commissioning.
Get your installer to explain your installation to you.
Have the required checks and services done by a qualified
professional.
Keep the instruction manuals in good condition close to the
appliance.
1.3.2 Installer's liability
The installer is responsible for the installation and initial com
missioning of the appliance. The installer must abide by the
following instructions:
1 Safety
7609475 - v02 - 04092014 POWER HT + 7

Read and follow the instructions given in the manuals pro
vided with the appliance.
Install the appliance in compliance with prevailing legisla
tion and standards.
Carry out initial commissioning and any checks necessary.
Explain the installation to the user.
If maintenance is necessary, warn the user of the obliga
tion to check the appliance and keep it in good working or
der.
Give all the instruction manuals to the user.
1.3.3 Manufacturer's liability
Our products are manufactured in compliance with the re
quirements of the various Directives applicable. They are
therefore delivered with the marking and any documents
necessary. In the interests of the quality of our products, we
strive constantly to improve them. We therefore reserve the
right to modify the specifications given in this document.
Our liability as manufacturer may not be invoked in the fol
lowing cases:
Failure to abide by the instructions on installing the appli
ance.
Failure to abide by the instructions on using the appliance.
Faulty or insufficient maintenance of the appliance.
1 Safety
8 POWER HT + 7609475 - v02 - 04092014

2 About this manual
2.1 General
This manual is intended for the end user of a POWER HT + boiler.
2.2 Symbols used
2.2.1 Symbols used in the manual
This manual uses various danger levels to draw attention to special in
structions. We do this to improve user safety, to prevent problems and to
guarantee correct operation of the appliance.
Danger
Risk of dangerous situations resulting in serious personal injury.
Danger of electric shock
Risk of electric shock.
Warning
Risk of dangerous situations resulting in minor personal injury.
Caution
Risk of material damage.
Note
Please note: important information.
See
Reference to other manuals or pages in this manual.
2.2.2 Symbols used on the appliance
1Alternating current.
2Protective earthing.
3Before installing and commissioning the appliance, carefully read
the instruction manuals provided.
4Dispose of used products through an appropriate recovery and re
cycling structure.
5Caution: danger of electric shock, live parts. Disconnect the mains
power prior to carrying out any work.
2.3 Abréviations
Hi Lower heating value (LHV)
Hs Higher heating value (HHV)
PCU PCB for managing burner operation
SU Safety PCB
Fig.1 Symbols used on the appliance
1 2
MW-2000068-1
1
2
3
4
5
2 About this manual
7609475 - v02 - 04092014 POWER HT + 9

3 Technical specifications
3.1 Homologations
3.1.1 Certifications
We hereby certify that the series of appliances specified below complies
with the standard model described in the CE declaration of conformity.
CE number CE-0085CP0089
NOx classification Class 5
Type of flue gas connection B23 – B23P
C13
C33
C43
C53
C63
C83
3.2 Technical data
Tab.1 General
Boiler speed Unit POWER
HT+ 1.50
POWER
HT+ 1.70
POWER
HT+ 1.90
POWER HT
+ 1.110
Useful output at 80/60°C
Heating mode Minimum kW 5.0 7.2 9.4 11.4
Useful output at 80/60°C
Heating mode Maximum kW 45 65 85 102
Useful output at 50/30 °C
Heating mode Minimum kW 5.4 7.8 10.2 12.3
Useful output at 50/30 °C
Heating mode Maximum kW 48.6 70.2 91.8 110.2
Heating flow rate - Hi
Heating mode Minimum kW 5.1 7.4 9.7(1) 11.7
Heating flow rate - Hi
Heating mode Maximum kW 46.3 66.9 87.4 104.9
Heating flow rate - Hs
Heating mode Minimum kW 5.6 8.2 10.7 12.9
Heating flow rate - Hs
Heating mode Maximum kW 51.4 74.2 97.0 116.4
Efficiency at 80/60 °C - Hi
Heating mode under full load Maximum % 97.4 97.2 97.3 97.2
Efficiency at 50/30 °C - Hi Heating mode un
der full load % 105.0 105.0 105.5 105.1
Efficiency - Hi - Return temperature
30 °C
Heating mode un
der part load % 108.4 108.1 108.2 108.1
(1) The heat output with G31 gas is different and is 12.5 kW
Tab.2 Characteristics of the heating circuit
Unit POWER HT+
1.50
POWER HT+
1.70
POWER HT+
1.90
POWER HT+
1.110
Water content (excluding expansion vessel) litre 2.81 4.98 8.34 9.83
Minimum operating pressure kPa (bar) 0.5 0.5 0.5 0.5
Maximum operating pressure (MOP) kPa (bar) 4 4 4 4
3 Technical specifications
10 POWER HT + 7609475 - v02 - 04092014

Unit POWER HT+
1.50
POWER HT+
1.70
POWER HT+
1.90
POWER HT+
1.110
Maximum water temperature °C 85 85 85 85
Maximum operating temperature °C 80 80 80 80
Tab.3 Data on the gases and combustion gases
For gas flow rates at 15°C and
1013.25 hPA
Boiler speed Unit POWER HT
+ 1.50
POWER HT
+ 1.70
POWER HT
+ 1.90
POWER HT
+ 1.110
Consumption of natural gas H (G20) Minimum m³/h 0.54 0.78 1.03 1.24
Consumption of natural gas H (G20) Maximum m³/h 4.90 7.07 9.25 11.10
Consumption of natural gas E (G20) Minimum m³/h 0.54 0.78 1.03 1.24
Consumption of natural gas E (G20) Maximum m³/h 4.90 7.07 9.25 11.10
Consumption of natural gas L (G25) Minimum m³/h 0.63 0.91 1.19 1.44
Consumption of natural gas L (G25) Maximum m³/h 5.69 8.22 10.75 12.91
Consumption of natural gas LL (G25) Minimum m³/h 0.63 0.91 1.19 1.44
Consumption of natural gas LL (G25) Maximum m³/h 5.69 8.22 10.75 12.91
Consumption of Propane (G31) Minimum Kg/h 0.40 0.57 0.97 0.91
Consumption of Propane (G31) Maximum Kg/h 3.59 5.19 6.79 8.15
NOx emission according to EN297A3 Class 5 mg/kWh 29.8 34.8 39.5 24.7
Flue gas mass flow rate (G20) Minimum Kg/h 7.2 14.4 18 18
Flue gas mass flow rate (G20) Maximum Kg/h 75.6 111.6 144 169.2
Maximum flue gas temperature Minimum °C 92 76 70 70
Maximum counter-pressure (B23p) Pa 200 200 200 200
Tab.4 Electrical characteristics
Unit POWER HT+
1.50
POWER HT+
1.70
POWER HT+
1.90
POWER HT+
1.110
Power supply voltage VAC 230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz
Maximum absorbed power - Full load W 100 117 146 185
Maximum absorbed power - Part load W 24 24 24 24
Maximum absorbed power - Stand-by W 2.7 3 3 3
Tab.5 Other characteristics
Unit POWER HT+
1.50
POWER HT+
1.70
POWER HT+
1.90
POWER HT+
1.110
Electrical protection class IP21 IP21 IP21 IP21
Weight empty Kg 60 70 104 109
3.2.1 Sensor characteristics
Tab.6 Heating flow sensor and return sensor
Temperature (in °C) 30 65 85
Resistance (in ohms) 8060 2085 1070
3 Technical specifications
7609475 - v02 - 04092014 POWER HT + 11

4 Description of the product
4.1 General description
POWER HT + floor-standing condensing gas boilers have the following
characteristics:
Low pollutant emissions
High efficiency heating
Electronic control panel
Flue gas discharge by a forced flue, chimney or bi-flow type connection.
Perfectly suitable for cascade systems with several boilers.
4.2 Operating principle
4.2.1 Gas/air setting
The casing fitted to the boiler is also used as an air box. Air is sucked in by
the fan and gas injected into the Venturi by the fan intake. The fan speed
is modulated according to the settings, the thermal energy requirement
and the actual temperatures measured by the temperature sensors. The
gas and air are mixed in the Venturi. The gas/air ratio command function
accurately adjusts the quantities of gas and air required. This provides op
timum combustion over the entire output range. The gas/air mixture is sent
to the burner, located upstream of the thermal exchanger.
4.2.2 Low-loss header (accessory)
The low-loss header is used to prevent interaction between the dynamic
pressures within the boiler and the heating circuits. Thanks to the low-loss
header, the dynamic pressures of the circulation pumps on the various cir
cuits are only added or subtracted to a lesser extent.
4 Description of the product
12 POWER HT + 7609475 - v02 - 04092014

Fig.3 Functional diagram of a boiler with a low-loss header
MW-1000021-02
1
78
5
4
3
69
2
1Low-loss header (accessory)
2Air vent
3Safety valve
4Modulating circulation pump
5Drain valve
6Heating circuit flow
7Heating circuit return
8Boiler
9Low-loss header kit
4.2.3 System in cascade
The boiler is ideally suited for a cascade system configuration. Use a boil
er/cascade connection kit to connect boilers in cascade.
Fig.2 Boiler equipped with the low-loss
header kit
MW-3000144-01
4 Description of the product
7609475 - v02 - 04092014 POWER HT + 13

Note
Please contact us for further information.
4.2.4 Settings and safety devices
Note
The settings and safety devices are only operational if the boiler is
powered up.
Tab.7 Description of the safety devices
Device Description
Safety thermostats The safety thermostats suspend the supply of gas to the burner if the water in the pri
mary circuit overheats. To resume normal operation of the boiler, eliminate the cause of
this interruption.
Caution
The safety thermostats must in no circumstances be switched off or
disconnected.
NTC flue gas sensor The control panel blocks the gas supply to the burner in the event of overheating. To
resume normal operation of the boiler, switch off the boiler and switch it back on again
with the ON/OFF switch.
Flame detector by ionisation The boiler is put into safety shut-down in the event of gas shortage or incomplete inter
ignition on the burner.
Hydraulic pressure switch Thanks to this device, the burner can only operate if the system pressure is higher than
0.5 bar (50 kPa).
When the pressure switch detects a pressure lower than 0.8 bar (80 kPa), a warning
message is displayed, without stopping the heating pump.
Post-circulation pump After the burner stops, depending on the room thermostat setting and if in heating
mode, the heating pump runs for a further 3 minutes.
Antifreeze fluid device When the flow temperature is lower than 5°C, the burner starts up and runs until the
flow temperature reaches 15°C. This device runs under the following conditions:
The boiler is switched on
The gas supply is working
The pressure in the system is higher than 0.5 bar
Anti-blocking of the pump If there are no heating or domestic hot water requirements for 24 consecutive hours, the
pumps start up automatically and run for 10 seconds.
The pumps connected directly to the appliance's terminal blocks are started up every
Friday at 10:00 a.m. and run for 30 seconds.
Anticipatory start-up of the circula
tion pumps
In heating mode only, the appliance can start up the circulation pumps before burner ig
nition. The duration and activation of anticipatory start-up depends on the conditions of
installation and the operating temperatures. The duration of anticipatory start-up of the
circulation pumps therefore varies from a few seconds to several minutes.
Fig.4 Boilers in cascade
MW-3000145-01
4 Description of the product
14 POWER HT + 7609475 - v02 - 04092014

4.3 Main components
Fig.5 POWER HT+ 1.50 and POWER HT+ 1.70
MW-3000116-01
1
2
7
8
24
20
4
322 9
10
11
21
12
13
14
6
15
16
1923
18
17
5
1Control panel
2Flue gas measuring point
3Flue gas connection
4Power supply terminal block
5Terminal block for the sensors and the remote con
trol
6Controller PCB
7Gas valve
8Burner
9Flue gas fitting
10 Automatic air vent
11 Return sensor
12 Safety thermostat
13 Condensate siphon
14 Drain valve
15 Hydraulic pressure sensor
16 Igniter
17 Spark plug
18 Ionisation probe
19 Flame inspection window
20 Flue gas sensor
21 Flow temperature sensor
22 Emplacement for two AVS 75 boards maximum. A
third AVS 75 board can be used by the boiler but
must be fixed to the wall and powered externally.
23 Emplacement for OCI 345 board
Caution
Danger of short circuit on the OCI 345 board if
it is fixed in another emplacement.
24 Safety thermostat on the combustion chamber door
Fig.6 POWER HT+ 1.90 and POWER HT+ 1.110
MW-3000117-01
1
23
2022
5
6
4
9
10
11
21
14
15
16
12
13
7
8
24
19
23
18
17
1Control panel
2Flue gas measuring point
3Flue gas connection
4Power supply terminal block
5Terminal block for the sensors and the remote con
trol
6Controller PCB
7Gas valve
8Burner
9Flue gas fitting
10 Automatic air vent
11 Return sensor
4 Description of the product
7609475 - v02 - 04092014 POWER HT + 15

12 Safety thermostat against overheating
13 Condensate siphon
14 Drain valve
15 Hydraulic pressure sensor
16 Igniter
17 Spark plug
18 Ionisation probe
19 Flame inspection window
20 Flue gas sensor
21 Flow temperature sensor
22 Emplacement for two AVS 75 boards maximum. A
third AVS 75 board can be used by the boiler but
must be fixed to the wall and powered externally.
23 Emplacement for OCI 345 board
Caution
Danger of short circuit on the OCI 345 board if
it is fixed in another emplacement.
24 Safety thermostat on the combustion chamber door
4.4 Control panel description
4.4.1 Description of the keys
Operating mode key
This key is used to access the shortcuts menu
See
Shortcuts menu, page 19
MENU
Menu key
See
List of parameters, page 19.
Rotary selection and confirmation button
4.4.2 Description of the symbols
12
Burner lit
12
(1): Output < 70%
12
(2): Output > 70%
Operating mode: Comfort room temperature
Operating mode: Reduced room temperature
1 2 3
Operating mode: Heating
1 2 3
(1): Zone 1 active
1 2 3
(2): Zone 2 active
1 2 3
(3): Zone 3 active
Operating mode: Domestic Hot Water activated
Operating mode: Automatic
Operating mode: Manual
Room temperature (°C)
Outside temperature (°C)
Protection Mode active: the boiler frost protection is activated
Sweep Function active
Holiday Program Function active
Note
The domestic hot water can be activated, but not the
heating
1 2 3
.
Data transmission: only when the wireless device is connected
Solar integration available
Generic error
Error: the burner cannot start up
Error: After Sales Service intervention required
Hydraulic pressure too low
°C, °F,
bar, PSI
Temperature and hydraulic pressure units: international system or
imperial system
1Date: day, month, year
2Day of the week
3Boiler / heating circuit pressure
4Clock: hours and minutes
Fig.7 Control panel keys
MW-3000005
MENU
87654321 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Fig.8 Symbols on the control panel
4
87654321 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
14:13
1.5 bar
18. February 2014
Tuesday
1
23
MW-3000006-EN-03
4 Description of the product
16 POWER HT + 7609475 - v02 - 04092014

5 Operation
5.1 Use of the control panel
5.1.1 Modifying the user parameters
1. Press the
MENU
key to access the parameters.
Note
Press the
MENU
key to return to the main display.
The user parameters can now be accessed. Use the button to se
lect and modify them.
See
List of user parameters, page 20.
5.2 Starting up the boiler
1. Start up the boiler by pressing the ON/OFF switch.
2. Open the gas cock.
3. Press the key to access the shortcuts menu.
4. Select the Standby/operation parameter by turning the button.
5. Press the button to start up the boiler.
The symbol disappears.
5.3 Stopping the boiler
Note
Prefer the Off or Standby operating mode.
See
Activating Protection mode, page 18
Putting the boiler in Standby mode, page 17
1. Switch off the boiler by pressing the ON/OFF switch.
2. Close the gas cock.
5.3.1 Putting the boiler in Standby mode
1. Press the key to access the shortcuts menu.
2. Select the Standby/operation parameter by turning the button.
3. Press the button to put the boiler in standby.
The symbol is displayed.
5.4 Frost Protection
The electronic management system of the boiler includes protection
against frost. If the water temperature falls below 5°C, the burner starts up
in order to provide a water temperature of 30°C.
This function only works if the boiler is turned on, the gas supply open and
the hydraulic pressure correct.
Fig.9
MW-3000052-EN-02
MENU
14:13
1.5 ba
r
18. Februar
y
2014
Tuesda
y
MENU
Fig.10 Starting up the boiler
MW-3000050
1
5 Operation
7609475 - v02 - 04092014 POWER HT + 17

5.4.1 Activating Protection mode
1. Press the key to access the shortcuts menu.
2. Select the Central heating mode CH1 parameter by turning the
button.
3. Confirm the selection by pressing the button.
4. Select the Off parameter by turning the button.
5. Confirm the selection by pressing the button.
The symbol is displayed.
Note
When the Off operating mode is activated:
The electrical circuits continue to be powered up.
The frost protection function is activated.
Fig.11 Off
MW-3000051-EN-02
Hot water boost
Central heatin
g
mode CH1
Room tem
p
erature CH1
MENU
5 Operation
18 POWER HT + 7609475 - v02 - 04092014

6 Settings
6.1 List of parameters
6.1.1 Shortcuts menu
Tab.8 Functions accessible with the shortcut key
Parameter Description Adjustment range
Standby/operation Boiler standby / start-up Standby: Boiler put on standby.
The symbol is displayed.
The boiler's operating modes are deactivated.
The frost protection function is activated.
On: Starting up the boiler
316:Hot water boost Forcing domestic hot water pro
duction.
On:
Activates forcing of domestic hot water.
The symbol is displayed.
If a domestic hot water tank is connected to the
boiler circuit, the boiler will give priority to forcing
heating of the DHW tank, independently of the
other parameters.
Off: Deactivates forcing of domestic hot water.
Central heating mode CH1 Boiler operating mode. On:
Heating is always activated.
The symbols ,
1 2 3
and are displayed.
Reduced:
Heating is deactivated.
The symbols ,
1 2 3
and are displayed.
Timed:
Heating is dependent on the time range program
med.
The symbols and
1 2 3
are displayed.
Off:
The boiler is shut down and frost protection is ac
tive.
The symbol is displayed.
Room temperature CH1 Room temperature set point in
comfort mode.
Hot water heating Setting domestic hot water pro
duction
On: Enables domestic hot water production.
Off:
Disables domestic hot water production.
The symbol disappears from the display.
Eco: Not used.
Hot water temp setpoint Domestic hot water temperature
set point.
6.1.2 Information menu
Tab.9 Menu Information
Information Description Value
Room temperature Is displayed if the control system unit is configured as a room
temperature appliance
Room temperature min
Room temperature max
Boiler temperature Boiler flow temperature °C
Outside temp Outside temperature °C
6 Settings
7609475 - v02 - 04092014 POWER HT + 19

Information Description Value
Outside temp min
Minimum outside temperature value memorised
Note
The outside sensor must be connected.
°C
Outside temp max
Maximum outside temperature value memorised
Note
The outside sensor must be connected.
°C
Hot water temp 1 Domestic hot water temperature
Note
The value displayed comes from the sensor on the
boiler's domestic hot water circuit.
°C
Collector temp 1 Instantaneous temperature of the solar panel sensor (when asso
ciated to a solar installation)
°C
State central heating CH1 Operating mode of heating circuit 1 ON/OFF
State central heating CH2 Operating mode of heating circuit 2 ON/OFF
State central heating CH3 Operating mode of heating circuit 3 ON/OFF
State hot water Domestic hot water circuit operating mode Load
State boiler Boiler operating mode ON/OFF
State solar Indicates solar running (when associated to a solar installation) -
Telephone customer service xxxxxxxxxx No.
6.1.3 List of user parameters
Tab.10 Menu Set time and date
Parameter number Parameter Description
1Hours / minutes Setting the time
2Day / month Setting the day and the month
3Year Setting the year
Tab.11 Menu Operator section
Parameter number Parameter Description Factory setting
20 Change Language Setting the interface language English
27 Programming lock Setting the programming lock
Off: the parameters can be displayed and modified
On: the parameters can be displayed but cannot be modi
fied
Off
Tab.12 Menu Time program
Parameter number Parameter Description
Heating circuit
1
Heating circuit 2 Heating circuit 3
500 520 540 Select days Selecting the days or group of days for the hourly pro
gram.
514 534 554 Mon-Sun Selecting a default hourly program.
501 521 541 1st Time ON Start of hourly period 1.
502 522 542 1st Time OFF End of hourly period 1.
503 523 543 2nd Time ON Start of hourly period 2.
504 524 544 2nd Time OFF End of hourly period 2.
6 Settings
20 POWER HT + 7609475 - v02 - 04092014