Solaronics MINIGAZ MHX 25 Owner's manual

TECHNICAL INSTRUCTIONS –Condensing warm air heater MHX–NT20006F-GB –27/10/2023
SOLARONICS Chauffage SAS. ZI n°3, 78 rue du Kemmel –CS 20302 –59429 ARMENTIERES CEDEX - FRANCE
Phone : [phone] - Fax : [phone]
Web site : www.solaronics.com
Page 1 / 48
Ultra-High Efficiency Warm Air Heater
Condensing MINIGAZ MHX
- Technical instructions -
MHX 25/35/45/60/80
Atmospheric Burner 2 stages
with condensation

TECHNICAL INSTRUCTIONS –Condensing warm air heater MHX–NT20006F-GB –27/10/2023
SOLARONICS Chauffage SAS. ZI n°3, 78 rue du Kemmel –CS 20302 –59429 ARMENTIERES CEDEX - FRANCE
Phone : [phone] - Fax : [phone]
Web site : www.solaronics.com
Page 2 / 48
Summary
1. Introduction..................................................................................................................................................................4
1.1. General.................................................................................................................................................................4
1.1.1. Manufacturer's liability ..........................................................................................................................................4
1.1.2. Installer's liability...................................................................................................................................................4
1.1.3. User's liability........................................................................................................................................................4
1.2. Certifications.........................................................................................................................................................5
2. Safety instructions and recommendations...............................................................................................................5
2.1. Safety instructions.................................................................................................................................................5
2.2. Caution .................................................................................................................................................................6
2.3. Recommendations................................................................................................................................................6
3. Description...................................................................................................................................................................7
3.1. Main components..................................................................................................................................................7
3.2. Operation..............................................................................................................................................................7
3.3. Safety....................................................................................................................................................................8
3.4. Switching off .........................................................................................................................................................8
3.5. Control Board........................................................................................................................................................8
4. Technical characteristics............................................................................................................................................9
4.1. MHX Model...........................................................................................................................................................9
4.1.1. Dimensions of MHX............................................................................................................................................10
4.1.2. Recommendations for MHX installation..............................................................................................................11
5. Fixing the devices......................................................................................................................................................11
5.1. Summary of existing supports.............................................................................................................................11
5.2. Rotating wall bracket SMR..................................................................................................................................12
5.2.1. SMR Dimensions................................................................................................................................................12
5.2.2. SMR Furniture ....................................................................................................................................................12
5.3. SMF Fixed wall brackets.....................................................................................................................................13
5.3.1. SMF 25/35/45 Dimensions..................................................................................................................................13
5.3.2. SMF 25/35/45 Furniture......................................................................................................................................13
5.3.3. SMF 60/80 Dimensions and mounting instructions.............................................................................................14
5.4. IPN Fixing kit.......................................................................................................................................................15
6. Electrical Wiring ........................................................................................................................................................16
6.1. Internal wiring diagram of MHX...........................................................................................................................16
6.2. Electrical connection between interne components............................................................................................17
6.3. Pilot wire principle...............................................................................................................................................18
6.3.1. Pilot wire principle diagram.................................................................................................................................18
6.4. Connection of standards controllers....................................................................................................................19
6.4.1. TM1 EVO Simple Thermostat.............................................................................................................................19
6.4.2. TM2 EVO V2 Touchscreen multi setting thermostat...........................................................................................20
7. Connections flue pipes.............................................................................................................................................21
7.1. General information ............................................................................................................................................21
7.2. Summary of existing flue kits..............................................................................................................................21
7.3. B22 kit connections.............................................................................................................................................22
7.4. C32 Kit Connection.............................................................................................................................................24
7.5. C12 kit Connection..............................................................................................................................................26
8. Gas connection..........................................................................................................................................................28
8.1. Connection of air heaters....................................................................................................................................28
8.2. Condensate Connection .....................................................................................................................................29
9. Gas circuit..................................................................................................................................................................30
9.1. Gas change over.................................................................................................................................................30
9.2. Gas manifold adjustment table ...........................................................................................................................31
9.3. Burner combustion settings ................................................................................................................................31
10. Commissioning and adjustment of the control setpoints......................................................................................33
10.1. Preliminary check................................................................................................................................................33
10.2. Use of the control unit.........................................................................................................................................33
10.3. Setting the heater via the control panel...............................................................................................................37

TECHNICAL INSTRUCTIONS –Condensing warm air heater MHX–NT20006F-GB –27/10/2023
SOLARONICS Chauffage SAS. ZI n°3, 78 rue du Kemmel –CS 20302 –59429 ARMENTIERES CEDEX - FRANCE
Phone : [phone] - Fax : [phone]
Web site : www.solaronics.com
Page 3 / 48
11. Maintenance...............................................................................................................................................................39
12. Spare parts.................................................................................................................................................................40
13. Troubleshooting ........................................................................................................................................................41
13.1. Defaults list of control panel................................................................................................................................41
13.2. General problems list..........................................................................................................................................43
14. Warranty (Extract from the general terms and conditions of sale, chapter WARRANTY) ..................................44
ANNEX.................................................................................................................................................................................45
End of life of the equipment..............................................................................................................................................45
Good safety practice.........................................................................................................................................................45
A smell of gas, the right reflexes ......................................................................................................................................45

TECHNICAL INSTRUCTIONS –Condensing warm air heater MHX–NT20006F-GB –27/10/2023
SOLARONICS Chauffage SAS. ZI n°3, 78 rue du Kemmel –CS 20302 –59429 ARMENTIERES CEDEX - FRANCE
Phone : [phone] - Fax : [phone]
Web site : www.solaronics.com
Page 4 / 48
1. Introduction
In these instructions, warnings are used to draw attention to particular indications. This is to ensure the safety
of the user, to avoid problems and to guarantee the correct functioning of the appliance.
WARNING
Indicates a possible dangerous situation that may result in personal injury and/or property damage.
Indicates important information.
Indicates a reference to other notices or other pages of the manual.
Before installing and commissioning the device, read all enclosed notices carefully.
1.1.General
1.1.1. Manufacturer's liability
Our products are manufactured in compliance with various applicable European directives requirements. They
thus supplied with CE (EC) label and all necessary documents. With our commitment to quality products, we
constantly seek to improve them. Therefore, we reserve the right to modify the characteristics stated in this
document. Our liability as a manufacturer does not apply in the following cases:
•Failure to follow operating instructions for the appliance.
•Failure to maintain or insufficiently maintain the appliance.
•Failure to follow installation instructions for the appliance
1.1.2. Installer's liability
The Installer is responsible for the installation and first commissioning of the device. The Installer must observe
the following:
•Read and follow the instructions given in the instruction manuals provided with the device.
•Carry out the installation by the applicable legislation and standards
•Carry out the first commissioning and carry out all necessary controls.
•Explain the installation to the User.
•Inform the User that he cannot make changes in the appliance's design and to the installation by
himself. The slightest modification (change, removal) of security components or parts automatically
results in the appliance's CE (EC) label being invalid.
•Alert the User about the obligation to control and maintain the device.
•Hand all documents to the User.
1.1.3. User's liability
To ensure the correct operation of the appliance, the User must observe the following: :
•Read and follow the instructions given in the instructions manuals provided with the device .
•Call a qualified technician to carry out the installation and perform the initial commissioning.
•Obtain explanations about the building from Installer.
•Keep all documents in good condition and near the appliance.
A maintenance contract is strongly recommended and is compulsory for appliances installed in
public buildings.
•Keep the instructions in good condition near the appliance.

TECHNICAL INSTRUCTIONS –Condensing warm air heater MHX–NT20006F-GB –27/10/2023
SOLARONICS Chauffage SAS. ZI n°3, 78 rue du Kemmel –CS 20302 –59429 ARMENTIERES CEDEX - FRANCE
Phone : [phone] - Fax : [phone]
Web site : www.solaronics.com
Page 5 / 48
1.2.Certifications
This equipment complies with the essential requirements of Regulation (EU) 2016/426 « Gas Appliance ». It is
registered under number n° 1312DL6489, standards EN17082 :2019.
The appliances covered by this manual also comply with the directives:
•Low voltage 2014/35/UE,
•Electromagnetic Compatibility 2014/30/EU,
•Ecodesign 2009/125/EC, according to the requirements of Regulation (UE) 2016/2281-2282-2283 of
30 November 2016.
2. Safety instructions and recommendations
2.1.Safety instructions
WARNING
The gas heater is a live appliance and as such it must be connected to the installation’s ground.
•It is forbidden to block and/or reduce the ventilation openings of the installation room or the
appliance.
•Never block the smoke exhaust or the fresh air intake.
•Never spray water on the heater, or touch the heater with wet body parts and/or bare feet.
•Do not place or hang any object on the heater.
•Do not work on the heater until it has been disconnected from the electrical supply and the gas supply
has been cut off.
•Do not change the type of gas used, appliance settings, the safety or control systems, as this could lead
to dangerous situations.
Contact a qualified technician in the event of a change in gas, gas pressure or supply voltage.
If the appliance is not used for a long period of time, disconnect the power supply. When restrarting the
appliance, it is advisable to call qualified personnel. In general, all repair and maintenance work must be carried
out only by authorized and qualified personnel.
The subscription of a maintenance contract is strongly recommended and is compulsory in the case of
appliances installed in an establishement receiving the public.