• Wall-mounted gas boilers
• PROXIMA - new
• Electric boilers
• ELECTRA 8 - new
• ELECTRA 15 - new
• ELECTRA 24 - new
• Water tank without direct heating
• 100 NTR/HV
• 125 NTR/HV
• 160 NTR/HV
• Flow water heaters
• VEGA - new
• Accessories
• Regulation to gas and electric boilers
• Flue gas installation for wall-hung boilers
• Accessories for gas boilers and gas water heaters
• Leaflets to be downloaded

MORA-TOP, s.r.o.

Šumperská 1349
783 91 Uničov
Czech Republic

tel.: +420 588 499 911
fax: +420 588 499 902

e-mail: toptech@moratop.cz

Basic Data

Type	Rated capacity (kW)	Design	Fuel
PROXIMA 20KK.N012	5-20 kW	Combi - chimney design	natural gas
PROXIMA 20SK.N012	5-20 kW	Solo - chimney design	natural gas
PROXIMA 20KT.N012	5-20 kW	Combi - turbo design	natural gas
PROXIMA 20ST.N012	5-20 kW	Solo - turbo design	natural gas
PROXIMA 25KK.N012	6-25 kW	Combi - chimney design	natural gas
PROXIMA 25SK.N012	6-25 kW	Solo - chimney design	natural gas
PROXIMA 25KT.N012	6-25 kW	Combi - turbo design	natural gas
PROXIMA 25ST.N012	6-25 kW	Solo - turbo design	natural gas

Safety

Thanks to the boiler safety system, failures are practically eliminated.

• The functioning of safety sensors is checked by two independent microprocessors in the control unit. Both microprocessors compare the obtained data on a continuous basis. In the event of any differences, the boiler is immediately switched off.
• The principle of regulating safety sensors by two independent microprocessors represents a unique technical solution.
• The possibility that the control unit will fail to work is down to a minimum because it is protected from electromagnetic interference and voltage variations.

Feedback

• The boilers are equipped with a feedback system between the control unit and the boiler end nodes, particularly those responsible for the boiler's safe operation:

• Burner on / off
• Manostat check
• Turbo-chamber ventilation
• Turbo-chamber tightness
• Gas valve tightness
• Flame stabilization
• Output modulation

• The principle of the feedback system is that the control unit transfers signal to the executive node of the boiler and checks the performance of the task concerned.
• Thanks to the boiler automatics, it is possible to visually check the function of the feedback system in the boiler.

Compactness

From the perspective of dimensions, PROXIMA boilers are among the smallest on the market.

Wide range of output modulation

• Building on more than fifty-year experience in the manufacturing of copper exchangers, we have developed unique exchangers for the PROXIMA boilers, with 94% efficiency, allowing for efficient water heating at low burner power output.
• Thus we have achieved what no other boiler manufacturer has managed to achieve so far, i.e. reach below the minimum output level of 25%.
• The advantage for the boiler user ensuing from this is that the boiler will quickly heat up the system and then work at minimum output levels in the heating regime. If necessary, the boiler will heat up service water at quantities required by the user.

Working capacity at minimum water flow

• The minimum switching water flow for the production of hot water is 1.6 litres per hour

Economy

Product's economy is usually expressed as the efficiency value; however, in fact it should be expressed by several parameters:

• The efficiency of the PROXIMA boiler is 92.5% (exchanger 94%), while the efficiency of comparable competitive boilers does not exceed 90.5%
• The temperature is regulated with a precision of 1°C
• The minimum boiler output is 5 kW which means that under the same conditions other boilers switch off, subsequently switching on at maximum output rates after a short period of time, then begin to work at minimum output and switch off again. This process is repeated several times, i.e. the boiler recycles. On the other hand, our boiler keeps on working with minimum output
• Linear regulation of boiler output - while the boiler is in operation, it continues analyzing the output of the gas burner, water temperature and flow (if service water is heated). This helps avoid continuous overheating of the water. The boiler works only with the necessary output and does not consume more gas than absolutely necessary.
• All these differences between PROXIMA and other boilers lead to a conclusion that under standard operating conditions, PROXIMA may help you save up to 20% of gas.

High Comfort

High comfort is based on the following characteristics of the boiler:

• Ability to exactly measure the flow of hot service water within the range of 1.6-20 l/min.
• Ability to exactly measure the temperature of hot services water (precision: 1°C)
• "Intelligent water pre-heating" function
• The principle of the "intelligent water pre-heating" function consists in an automatic recording of the boiler user's requirements for hot service water consumption during the past 24 hours. On the basis of the information obtained, the control unit automatically starts water heating in the secondary circuit at an appropriate moment.
• The advantages for boiler users are as follows:

• High comfort
• Minimum loss of water upon its consumption

• Very quiet burner start-up and low boiler noise level while in operation - thanks to the boiler's special function, vibrations upon burner ignition are avoided
• Low minimum output - the boiler practically does not switch off during operation, i.e. avoiding so-called recycling
• Possibility to set up equitherm curves - the electronic system of the boiler allows for setting the dependence of the heating system water temperature on the external temperature. As soon as an external temperature sensor is connected to the boiler, the heating water temperature control unit automatically enters the temperature curve selection mode.

Service Reliability

The reliability of the boiler operation is secured by the following functions:

Control unit

• All the junction points of the boiler are connected via special relays directly to the control unit.
• The control unit is equipped with a special filter protecting it from electromagnetic interference.
• The control unit is stable at voltage from 155 to 260 V; in the event of voltage failures, the boiler automatically switches off and reactivates again as soon as the power supply stabilizes

Water flow and temperature sensors

• Boilers are equipped with special "turbulent" flow sensors which represent a revolutionary development compared with standard sensors.
• "Turbulent" sensors not only react to the water flow but are also able to measure it.
• Low boiler output and high sensor sensitivity make it possible for the boiler to start heating water even with the flow of 1.6 l/min.
• The sensor features no moving parts and its service is therefore practically unlimited.

Special characteristics of the secondary exchanger

• The secondary exchangers used in our boilers are characterised by high resistance to scale build-up, for several reasons: The internal geometry of the channel enable the exchanger to operate at extremely low speed while maintaining turbulent flow (in our exchangers, the critical Reynold's number is 150 while it is 2000 in a simple tube).
• The smooth surface of the channel plate of special finish minimises build-up.
• The exchanger does not have any corners ("dead zones") where material could sediment.

Created by: Artprodesign.com