Robur k18 Installation, Use And Maintenance Manual
Modulating, condensing gas absorption heat pump, using aerothermal renewable energy and natural gas
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- Installation, use and maintenance manual (56 pages) ,
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- User manual (24 pages)
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Summary of Contents for Robur k18
- Page 1 Installation, Use and Maintenance Manual Modulating, condensing gas absorption heat pump, using aerothermal renewable energy and natural gas Nominal thermal capacity 18,9 kW...
- Page 2 Revision: A - 3.1 Code: D-LBR687 This Manual has been drawn up and printed by Robur Robur S.p.A.; whole or partial reproduction of this Manual is forbidden. The original is filed at Robur S.p.A. Any use of this Manual other than for personal referencing must be previously authorised by Robur S.p.A.
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Page 3: Table Of Contents
8 DIAGNOSTICS ������������������������������������������������34 Anti-icing function............19 Operative codes..............34 Anti-icing liquid ..............19 APPENDICES ��������������������������������������������������������36 System water quality ............20 Installation filling .............. 20 Declaration of Conformity ..........36 Fuel gas supply ..............20 Installation, Use and Maintenance Manual – K18... -
Page 4: I Introduction
I INTRODUCTION Manual qualified installer, for correct appliance installation; ▶ This Manual is an integral part of the K18 unit and must planner, for specific information on the appliance. ▶ be handed to the end user together with the appliance. - Page 5 Except in the event of danger, do not disconnect Water-ammonia solution ▶ the power supply to switch off the appliance, but al- The K18 unit uses the ammonia-water absorption cycle. ways and exclusively act through the control device The water-ammonia solution is contained in the tight- provided.
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Page 6: Conformity
III Warnings III�3 EXCLUSIONS OF LIABILITY AND Proper maintenance assures the efficiency and good operation of the appliance over time. WARRANTY Maintenance must be performed according to the ▶ manufacturer's instructions (see Chapter 7 p. 32) and in compliance with current regulations. Any contractual or extra-contractual liability of the manufacturer for any damage caused by incorrect in- Appliance maintenance and repairs may only be en-... -
Page 7: Features And Technical Data
▶ controlled by an electronic controller; anti-icing function for water circuit; ▶ titanium stainless steel shell-and-tube water exchanger; ▶ condensate discharge obstruction sensor. ▶ stainless steel, flue gas latent heat recovery exchanger; ▶ Installation, Use and Maintenance Manual – K18... -
Page 8: Dimensions
III Warnings 1�2 DIMENSIONS Figure 1�1 – Dimensions and service plate LEGEND Water outlet connection Ø ¾’’ M Flue gas condensate drain Water inlet connection Ø ¾’’ M Defrosting water drain Gas connection Ø 3/8’’ M Green warning light Electrical connection input Sight glass Flue gas outlet Ø... -
Page 9: Components
Defrosting valve Delivery temperature probe Ignitor and flame detector TA Probe Components box PT 1000 Flue gas Temperature Probe Teva Probe Standard circulation pump in version Limit thermostat Combustion air inlet C1 (standard) Installation, Use and Maintenance Manual – K18... - Page 10 III Warnings Figure 1�3 – Rear view internal components LEGEND Safety valve Condensate drain Water inlet connection: "G 3/4" M Flow meter Condensate sensor Inlet temperature probe Flue gas discharge Ø 60mm Water delivery connection: "G 3/4"...
- Page 11 III Warnings Figure 1�4 – RH front view internal components LEGEND Gas valve TG Probe Blower Electrical panel Ignition transformer Sonda TGV Oil pump Installation, Use and Maintenance Manual – K18...
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Page 12: Electrical Wiring Diagram
III Warnings 1�4 ELECTRICAL WIRING DIAGRAM Figure 1�5 – Wiring diagram of the appliance with water pump (C1 version) LEGEND GHP10 electronic board Manual flue gas thermostat Generator temperature sensor CNTBOX Flame controller Generator limit thermostat TEVA Evaporator outlet temperature sensor Blower Flowmeter Gas valve probe... -
Page 13: Electronic Boards
Electronic Board GHP10 with microprocessor, it controls the ▶ appliance and displays data, messages and operative codes. The appliance is monitored and programmed by interacting with the display and selection keys (Figure 1.7 p. 14). Installation, Use and Maintenance Manual – K18... -
Page 14: Operation Mode
The OCDS005 timer thermostat is able to control a single unit "MODULATING". For any modifications contact the in- K18. In this case the water setpoint is fixed or calculated based staller or the TAC. on one heating curve only directly controlled by the unit K18; it is not modifiable by the OCDS005 device. -
Page 15: Technical Characteristics
(3) Clearance dimensions without flue gas exhaust duct (4) The data excluded electrical consumption of the standard fitted pump (75 W) (5) Lower temperatures are admitted temporarily (6) The LPG version is available on request Installation, Use and Maintenance Manual – K18... -
Page 16: Transport And Positioning
2 Transport and positioning Table 1�2 – PED data PED data Generator 18,2 Cooling volume transformer COMPONENTS UNDER PRESSURE Absorber/condenser Cooling absorber solution 1.78 Solution pump TEST PRESSURE (IN AIR) bar g MAXIMUM PRESSURE OF THE REFRIGERANT CIRCUIT bar g FILLING RATIO kg of NH3/l 0,186... -
Page 17: Appliance Positioning
In order to work correctly, the appliance needs Mounting base constructive features clean air. Place the appliance on a levelled flat surface made of fire- ▶ proof material and able to withstand its weight. Installation, Use and Maintenance Manual – K18... -
Page 18: Heating Engineer
Constant ot variable water flow The unit K18 may operate with constant or variable water flow. System and components must be designed and installed consistently. -
Page 19: Water Circulation Pump
If the glycol percentage is ≥30% (for ethylene glycol) or and, if required, the burner too, when the outside temperature ≥20% (for propylene glycol) the TAC must be alerted be- approaches zero. fore first start-up. Electrical and gas continuity Installation, Use and Maintenance Manual – K18... -
Page 20: System Water Quality
3 Heating engineer Type of anti-icing glycol Glycol effects Inhibited type glycol is recommended to prevent oxidation The Table 3.1 p. 20 shows, indicatively, the effects of using a phenomena. glycol depending on its %. Table 3�1 – Technical data for filling the hydraulic circuit GLYCOL % WATER-GLYCOL MIXTURE FREEZING TEMPERATURE -3°C... -
Page 21: Combustion Products Exhaust
1 Rain cover Ø 60 mm; ▶ 1 Terminal Ø 60 mm; 3�11 FLUE GAS CONDENSATE DISCHARGE ▶ The K18 unit is a condensing appliance and therefore produces Figure 3�3 – Fume outlet condensate from combustion flue gases. Condensate acidity and exhaust regulations The flue gas condensate contains aggressive acid sub- stances. -
Page 22: Defrosting Water Drainage
4 Electrical installer 3�12 DEFROSTING WATER DRAINAGE The defrosting water drain point is located at its base (see refer- ence G in Figure 1.1 p. 8). Accessory OSCR019 needs to be used to connect the defrosting water drain to a drain manifold. Defrosting Prevent freezing of defrosting water drain by using a heating In winter, frost may form on the finned coil and the ap-... -
Page 23: Set-Up And Control
1. Access the Electrical Board of the appliance accord- ing to the Procedure 4.2 p. 22. 2. Perform connections as shown in the diagram in Fig- ure 4.3 p. 24. The cable may not be longer than 30 metres. Installation, Use and Maintenance Manual – K18... - Page 24 4 Electrical installer Figure 4�2 – Connection diagram to OQLT017 system controller Figure 4�3 – Connection diagram to timer thermostat OCDS005...
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Page 25: Water Circulation Pump
4�5�2 Option (2) VARIABLE FLOW circulating pump the Electrical Panel inside the appliance. To connect the alarm indicator lamp, follow the instructions It must be mandatorily controlled by the GHP10 electronic below. board. Figure 4.7 p. 26. Installation, Use and Maintenance Manual – K18... -
Page 26: How To Remote The Board Error Reset
Power supply mains complying with the appliance's rating ▶ tion parameters and may only be carried out by a TAC- plate data; Robur. NEITHER the user NOR the installation technician appliance correctly installed, according to the manufactur- ▶ is authorised to perform such operations, under penalty er's instructions;... -
Page 27: Check Combustion Parameters
If the required CO setting cannot be reached contact Robur. Paragraph reserved to TACs� Figure 5�1 – Gas valve LEGEND Mains gas pressure Off-set pressure Off-set regulating screw Burner gas pressure Throttle regulating screw Nozzle Installation, Use and Maintenance Manual – K18... -
Page 28: Normal Operation
First start-up by TAC When the appliance is powered, all the LEDs switch on for ▶ First start-up may exclusively be carried out by a Robur 3 sec, then the GHP10 board name is displayed in two sub- TAC (Chapter 5 p. 26). -
Page 29: Modifying Settings
1. active 0. Fixed setpoint Setpoint Origin 1. Heating curve (default) 2. External setpoint The minimum and maximum values depend on what Fixed setpoint in heating operation has been set in the installation stage. Installation, Use and Maintenance Manual – K18... - Page 30 5 First start-up Fixed setpoint in DHW operation from +10°C to +70°C (default 55°C) Heating curve slope from 10 to 400 (default 75) Heating curve offset from -5K to +5K (default 0) Internal ambient setpoint with heating curve from 0°C to 40°C (default 20°C) If the unit is connected to the OQLT017 controller this parameter is ignored.
- Page 31 24 °C, set the Offset parameter (parameter 229) to -2 °C. 3. Exit menu 3 by pressing the B -> key until displaying the let- ter "E" for exit, then press the Enter C key. Installation, Use and Maintenance Manual – K18...
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Page 32: Restarting A Locked-Out Unit - Reset
7 Maintenance How to modify the operation of the variable-flow circulation Locked-down appliance pump An external intervention (reset or repair) is required due to an appliance fault or problem with the system. The C1 version (standard) is equipped with a variable-flow cir- A reset may be enough for a temporary and provisional culation pump. -
Page 33: Pre-Emptive Maintenance
These operations must be performed by Qualified Personnel. How to deactivate the appliance for long periods of time 1. Switch the appliance off (6.2 p. 28). Installation, Use and Maintenance Manual – K18... -
Page 34: Diagnostics
7 Maintenance 8 DIAGNOSTICS 8�1 OPERATIVE CODES Table 8�1 – Operative Codes CODES DESCRIPTION Warning (u) Error (E) GENERATOR LIMIT THERMOSTAT Contact authorised Technical Assistance TRIP FLUE GAS THERMOSTAT TRIP Contact authorised Technical Assistance AMBIENT TEMPERATURE EXCEED- Reset is automatic when the triggering condition ceases. ING OPERATIVE LIMITS Non-blocking Warning (informative code). - Page 35 If the code persists, shows up again or in case of doubt, contact the TAC. CONTROLLER DEFECTIVE Contact authorised Technical Assistance. Reset is automatic when the triggering condition FAULTY EXTERNAL ROOM PROBE ceases. NA: Not Applicable Installation, Use and Maintenance Manual – K18...
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Page 36: Appendices
Address : Via Parigi 4/6 City, Country : Verdellino/Zingonia 24040 (Bg), Italy This is to declare that the ROBUR Gas Absortion Heat Pump (GAHP) are in conformity with the following EC- Directives: Machinery Directive 2006/42/EC with subsequent amendments and integrations. - Page 40 Robur mission Robur is dedicated to dynamic progression in research, development and promotion of safe, environmentally-friendly, energy-efficiency products, through the commitment and caring of its employees and partners. Robur Spa advanced climate control technologies Via Parigi 4/6 24040 Verdellino/Zingonia (Bg) Italy T +39 035 888111⇒F +39 035 884165...
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