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1. RECOMMENDATIONS: 
 

- This Electrical Boiler is not intended for use by persons with reduced physical, sensory or 
mental  capabilities,  or  lack  of  experience  and  knowledge,  unless  they  have  been  given 
supervision or instruction concerning use of the Electrical Boiler by a person responsible for 
their safety.  
- It is not allowed, to play with the electrical boiler by CHILDREN. 
- It is necessary one to be familiar and to observe the safety operation and assembly manual. 
- After unpacking the boiler, check delivery integrity and completeness. 
-  Electrical  boiler  has  IP  20  protection  degree,  which  applies  after  an  installation  at  place 
where it will be used. 
- Check whether the boiler type corresponds to your needs. 
- It is recommendable for each assembly a project to be drafted. 
- The assembly may be carried out only by an expert, authorized for such activity. 
- Boiler assembly should meet the effective prescriptions, norms and to the present manual. 
- Connection of the boiler to the power network (if necessary) should be harmonized with the 
local  power  supplier,  which  should  be  done  by  the  consumer  prior  to  the  purchase  of  the 
boiler. 
- Adjustment and commissioning should be carried out only by a service technician approved 
by the producer. 
- Upon incorrect assembly, damages may occur and the producer shall not be liable thereof. 
- In case of failure contact the service organization. Unprofessional intervention may damage 
the boiler. 
- For correct functioning, safety and long-term operation secure prophylactics at least once a 
year. 
-  In case of damages  incurred by  unprofessional  assembly, as  well  as upon noncompliance 
with  the  regulations  and  the  operation  manual,  the  producer  is  not  liable  and  shall  not 
provide guarantee service. 
- The heating installation should have air bleeds at all necessary places.  
- It is not allowed to make any changes whatsoever on the electrical diagram of the product, 
except for connection of the indoor temperature or equithermal thermoregulator.  
-  Hydraulic  and  warm  tests  should  be  carried  out  of  each  heating  installation  upon 
commissioning. 
- The electric boiler may operate at open system up to temperature of 95

o

C max and at closed 

system up to 110

o

C at pressure of 1.8 bar in a self-contained heating circuit. 

- The assembly organization is obliged to get the client familiar with the operational rules of 
the heating system as a whole. 
 
 
 

2. INTRODUCTION 

 

The  flow-through  electric  boiler  ECOTERMAL  is  a  modern  ecological  source  of  heat 
designated  for  story  and  central  heating  of  small  and  average  size  houses  and  production 
facilities. The main advantages of heating with electric power are mostly cost effectiveness, 
high efficiency,  environmental  friendliness and  compactness. Electric boiler can be used in 

Summary of Contents for 10 MRT

Page 1: ...E WITH THREE STAGE ELECTRONIC CONTROL PASSPORT OF ELECTRIC BOILER WITH THREE STAGE ELECTRONIC CONTROL ECOTERMAL MRT MODULE T 6 8 10 12 15 18 22 24 30 kW Bourgas 8000 47 Slivnitsa Str tel 056 814 681 056 814 215 fax 056 814 584 E mail sales ecotermal bg com www ecotermal com ...

Page 2: ... 8 7 Commissioning 8 8 Conditions of commissioning and undertaking guarantee maintenance 8 9 Diagrams and tables 10 15 9 1 Method of connecting of story local heating Fig 1 10 9 2 Method of connecting the system to a solid fuel boiler Fig 2 10 9 3 Structure of the electric boiler from 6 to 30 kW Fig 3 11 9 4 Structure of the electric module from 6 to 30 kW Fig 4 12 9 5 Control panel Fig 5 13 9 6 T...

Page 3: ...ay occur and the producer shall not be liable thereof In case of failure contact the service organization Unprofessional intervention may damage the boiler For correct functioning safety and long term operation secure prophylactics at least once a year In case of damages incurred by unprofessional assembly as well as upon noncompliance with the regulations and the operation manual the producer is ...

Page 4: ... board which corresponds to the difference between the set and the measured temperature This signal is in the 4 20 mA range Because both the regulators room and boiler are interconnected in cascade system this signal goes as a setpoint at the boiler thermo regulator s input which in turn controls the temperature of the water in the boiler therefore the more the room temperature approaches the set ...

Page 5: ...ple for electric boiler then it is not required to be mounted room thermo regulator In this case jumper J1 which placed on the main board is switched to pos 2 and by trimmer potentiometer W pos 12 the temperature is set In all other cases jumper J1 is placed in pos 1 4 2 TECHNICAL CHARACTERISTICS Power Supply 240V АС Maximum permissible operating current of the power relays 16А 250V The outlet ele...

Page 6: ...ontact external clock for timing of operation of the boiler in a closed contact In case that clock is not used these power wires are short circuit with a bridge X3 is connected to the boiler temperature sensor The sensor is polar you must follow the indicated polarity when connected In a reverse connection does not fail but the temperature is unreal To connect x8 to advanced management another six...

Page 7: ...order not to prevent the normal operation of the programmable thermo regulator The water temperature in the boiler is adjusted manually by the user and doesn t depend on the ambient temperature The thermostatic valves influence the boiler regulator by dosing the consumed heat power and the room temperature influences the duration of the boiler operating time An advantage of this method is the conv...

Page 8: ...startup is possible after performed control on the good working order of the connections to the heating system checkup of the electrical connections and the external line Check up whether the valves and taps of the heating circuit are open check up also the water pressure in the system Switch on the automatic fuse of the electric boiler and preset the desired temperature of the boiler and the indo...

Page 9: ... 5 Banjo fitting connections should be mounted on the boiler intake and the outlet 6 Hydraulic test should be carried out at an index of 1 25 above the operating pressure 7 Upon assembly it is necessary the adjustments of the boiler and the blocking thermostats to be checked up The actual control is done during the warm test 8 The guarantee shall be effective as from the commissioning date but not...

Page 10: ...ff valve 9 Safety valve by pressure 4 Electric heater 10 Solid fuel boiler 5 Electric boiler 11 Expansion vessel 6 Circulation pump 12 Manifold Box Method of connecting of story local heating Fig 2 1 Air bleeder 7 Safety valve 2 Electric heater 8 Shut off valve 3 Electric boiler 9 Manifold Box 4 Expansion vessel 5 Circulation pump 6 Water filter ...

Page 11: ...eaker with additional protection 5 Emergency blocking Thermostat 6 Air Bleeder 7 System control 8 Water Container 10 Heaters 11 Circulation Pump 12 Control Panel 13 Pressure gauge valve 14 Expansion Tank 15 Thermostat Pocket 16 Thermostat bimetallic 17 Pressure switch 9 Pressure gauge ...

Page 12: ... Automatic Breaker with additional protection 5 Emergency blocking Thermostat 6 Air Bleeder 7 System control 8 Water Container 9 Pressure gauge 10 Heaters 12 Control Panel 13 Pressure gauge Valve 15 Thermostat Pocket 16 Thermostat bimetallic 17 Pressure switch ...

Page 13: ...LED Indication of activated emergency thermostat 4 LED Indication of circulation pump condition 5 Button set current temperature 6 Pressure gauge 7 Potentiometer of boiler s temperature 8 LED Indication Second Stage ON 9 LED Indication Third Stage ON MRT MODULE T 6 30 KW Fig 6 ...

Page 14: ... 22 24 30 Commutations level pcs 3 3 3 3 3 Boiler body volume dm3 8 9 8 9 8 9 8 9 8 9 Supply voltage V 240 400 240 400 400 400 400 Maximum operating pressure Bar 2 5 Test pressure Bar 4 0 Regulation of heat medium temperature C 30 90 Room temperature control C 5 30 Connection pipes dimensions G 1 Efficiency index 99 30 Р kW Iheater A Cross section mm2 Ifuse A 6 8 33 5 x 2 5 10 8 11 11 5 x 2 5 16 1...

Page 15: ...modules Model Power kW Weight kg Model Power kW Weight kg 6 MRT 6 29 0 6 T 6 22 0 8 MRT 8 8 T 8 10 MRT 10 10 T 10 12 MRT 12 12 T 12 15 MRT 15 29 5 15 T 15 22 5 18 MRT 18 29 5 15 T 18 22 5 22 MRT 22 31 0 22 T 22 24 0 24 MRT 24 33 0 24 T 24 26 0 30 MRT 30 33 0 30 T 30 26 0 MODEL EQUIPMENT MRT Module Т Expansion tank Circulation pump Safety valve Blocking emergency Thermostat Air bleeder Mounting bra...

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