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1. Manuals
2. Brands
3. Thermona Manuals
4. Boiler
5. Therm DUO 50 FT
6. Manual for installation and maintenance

• Page 1
  Manual for installation and maintenance DUO 50 FT…

• Page 2: Table Of Contents

  9. Graphs for output and connecting excess pressure setting………. 11 • 9.1 Graphs for usable connecting overpressure of heating water ….12 • 9.2 Graphs for output setting …………..13 10. Therm DUO 50 FT sets ………………… 14 11. Wiring diagrams …………………. 16 12.

• Page 3: Usage

  2. GENERAL DESCRITPTION OF THERM DUO 50 FT All functional parts of THERM DUO 50 FT are fixed to a metal supporting frame. There are two copper flue exchangers in its upper part. Their surface is protected by an aluminium and silicone mixture.

• Page 4: Technical Specifications

  The ventilator’s operation is checked by manostat. When the electric manostat contact closes the ignition cycle starts and the burner is ignited. GRUNDFOS 15/60 pump is used for this version. Graph for usable connecting overpressure of heating water with max. boiler output and heat slope up to 20 C shows relatively low excess pressure for the heating system.

• Page 5: Production Check

  ♦ Boiler connection to warm-water system Boiler rooms with THERM DUO 50 FT cascades must be solved by a project according to hydraulic ratio calculations with respect to total outputs. The connection of boilers to heating distribution systems and gas distribution must be carried out so that the boiler outlets are not strained.

• Page 6: Boiler Connection To Supply Mains

  boiler. A round gas cock with a certificate for gas must be fitted to the boiler’s gas inlet. The gas cock must be freely accessible. The boiler is designed for natural gas with 9 to 10.5 kWh/m heating power and 20 mbar nominal pressure in the distribution net.

• Page 7: Choice Of Regulation And Control Elements

  SIEMENS REV 23, Honeywell CM 707, CM 67 or Electrobock PT 21, PT 30 and others. For the weather compensated regulation Thermona offers the outside sensor THERM Q01. There is also a high quality regulation element – intelligent programmable SIEMENS QAA 73.110, which communicates with the boiler’s automatics microprocessor through IU02Q interface.

• Page 8: Disconnecting The Boiler

  ♦ Disconnecting the boiler The boiler can be switched off by mode switch or by the switch on the room thermostat. For long-term disconnection outside the heating season (e.g. during the summer holiday) it is advisable to close the gas tap. 6.

• Page 9: Lcd Display

  LCD display : ♦ The meaning of the used symbols: — temperature, failure modes and service data in digital numbers — heating mode (heating temperature displayed) — boiler burning — temperature symbol — K factor value displayed (weather compensated mode) — summer mode selected — winter mode selected — boiler ignition failure…

• Page 10: Maintenance

  Other kinds of information shown on the display: Using service buttons (buttons in the top left corner; right arrow „ “ – step forward, left arrow „ “ – step backwards) you can see these parameters in this order: 1. The set temperature of the heating water + °C + flashing value).

• Page 11: Boiler Hanging

  The setting of maximum, minimum and starting power is to be carried out by a service company worker and following the service manual. Important: The system for the setting of gas pressure range on modulator is protected by a plastic cover. That is removed for gas pressure setting and after the setting it is necessary to put it in its original place (necessary for correct work of modulation coil).

• Page 12: Graphs For Output And Connecting Excess Pressure Setting

  9. GRAPHS FOR OUTPUT AND CONNECTING EXCESS PRESSURE SETTING 9.1 Graphs of usable connecting overpressure of heating water Connecting overpressure Therm DUO 50 Wilo Grundfos Water throughflow (m / h) Important: The curves of usable connecting overpressures of heating water are done for Wilo 25/70 and Grundfos 15/60 pumps at the highest level of regulation.

• Page 13: Graphs For Output Setting

  9.2 Graphs for boiler output setting Graph for output settings of THERM DUO 50 FT (natural gas), nozzles — 1mm Starting output Boiler output (kW)

• Page 14: Therm Duo 50 Ft Sets

  10. BOILER SETS 10.1 THERM DUO 50 FT set — front view…

• Page 15
  10.2 THERM DUO 50 FT set – side and top view…

• Page 16: Wiring Diagrams

  11.1 Wiring diagram of THERM DUO 50 FT connection…

• Page 17: Dims01-Th01 Modulation Electronics

  12 DIMS01-TH01 modulation electronics Description of setting elements: Jumper JP1 – gas type selection (natural gas / propane) – interconnection 2-3 = natural gas, interconnection 1-2 = propane Dip-switch (Boiler type and parameters changing switch) DS2- ext. DS1-DHW DS3 — cascade sensor without ext.

• Page 18
  Graphs of curves (inclination — change) The inclinations The changes It follows that in this mode the knob on the control panel which is used for setting the temperature of the heating in fact shows the demanded temperature of the room. We recommend the initial service setting to be „K“…

• Page 19: Guarantee And Liability For Defects

  Additional functions The pump starts running regularly when not operational (it runs for 3 minutes after 24 hours of inactivity). Antifreeze protection is activated when the temperature in the boiler falls bellow 8 C. I.e. the pump starts running, the boiler ignites and it heats the circuit up to 35 C.

• Page 20: Installation Versions

  14. INSTALLATION VERSIONS Realizations: – Coaxial horizontal version with the outlet into the perimeter wall. The piping can also be doubled, the outlets are either concentric or placed so closely to each other (not further than 50 cm) that they are exposed to the same climatic conditions.

• Page 21: Record Of Repairs

  15. RECORD OF GUARANTEE AND POST-GUARANTEE REPAIRS AND YEARLY MAINTENANCE CHECKS Operation Authorized company Customer’s signature Date Packaging and product disposal All material used for production correspond with the requirements of valid norms and regulations. The product packaging is to be handed in the paper disposal area, the foil in the disposal containers for plastics.

• Page 22: Quality Certificate

  The product is certified by Engineering testing institute, authorized person 202: THERM DUO 50 FT — certificate for type testing according to EC guidelines for gas appliances 90/396/EHS no. E-30-00123-06 THERM DUO 50 FT — certificate for efficiency according to EC guidelines 92/42/EHS no.