Robur GAHP-AR Installation, Use And Maintenance Manual
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Robur GAHP-AR Installation, Use And Maintenance Manual

Air/water reversible absorption heat pump
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Installation, use and maintenance manual
GAHP-AR
air/water reversible absorption heat pump
gas powered

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Summary of Contents for Robur GAHP-AR

  • Page 1 Installation, use and maintenance manual GAHP-AR air/water reversible absorption heat pump gas powered...
  • Page 2 The rights of those who have legitimately filed the registered trademarks contained within this publication are not affected. With the aim of continuously improving the quality of its products, Robur Corporation reserves the right to modify the data and contents of this Installation, use and maintenance manual without prior notice.

  • Page 3: Table Of Contents

    III.2 Conformity ................ p. 6 Water circulation pump ..........p. 29 III.3 Exclusions of liability and warranty ......p. 6 With more than one GAHP-AR unit ......p. 29 1 Features and technical data 5 First start-up ........p. 7 ................p. 30 Features ................p. 7 Preliminary checks ............

  • Page 4: Iintroduction

    CONTROL DEVICE In order to be able to work, the GAHP-AR unit needs a control RECIPIENTS device (DDC or external request), which must be connected by the installer.
  • Page 5 AT. „ In the event of coolant leak keep away and disconnect the power and gas supply (only if it is possible to do so Installation, use and maintenance manual – GAHP-AR...

  • Page 6: Iii.2 Conformity

    Warnings Routine maintenance regulations, depending on the Country and location, and in accordance with the manufacturer's instructions. In particular, regulations regarding the following shall be complied with: Proper maintenance assures the efficiency and good op- Gas systems and equipment. eration of the appliance over time. ▶...

  • Page 7: Features And Technical Data

    The cycle of the GAHP-AR is fed by the thermal energy provided by a gas burner, therefore the required electric energy is limited to driving the fan and pump motors (the only mechanical mov- ing parts of the appliance).

  • Page 8: Dimensions

    Features and technical data DIMENSIONS Figure 1.1   Unit dimensions 10-1/2" 5-7/8" 38-3/8" (A) 27-3/8" (A) 48-1/2" 33-1/2" Position of holes for fixing of anti-vibration joints Figure 1.2   Service plate with plumbing and gas connections Water outlet connection Ø 1 1/4" F Water inlet connection Ø 1 1/4" F Electrical knockouts Ø...

  • Page 9: Components

    Water inlet connection Ø 1 1/4" F Combustion air intake Water outlet connection Ø 1 1/4" F Combustion blower Gas connection Ø 1/2" F Gas valve TA outdoor temperature probe Electrical panel Oil pump Installation, use and maintenance manual – GAHP-AR...
  • Page 10 Features and technical data Figure 1.4   Internal components - left side view Generator fins temperature probe Flame sensor / ignition electrodes Ø 80mm flue gas exhaust...
  • Page 11          Safety valve Outlet temperature probe Return temperature probe Flow switch Defrosting valve Teva evaporator temperature probe TG generator temperature probe TCN probe Limit thermostat Installation, use and maintenance manual – GAHP-AR...

  • Page 12: Electrical Wiring Diagram

    The appliance is monitored and pro- operations of the GAHP-AR unit. grammed by interacting with the display and the knob.
  • Page 13 T 10A fuse JP12 Generator fins temperature probe input MAIN 230V (L,N) Board supply input 230 Vac T 2A fuse Not used PUMP 230V (L, N) Oil hydraulic pump supply output T 3.15A fuse Installation, use and maintenance manual – GAHP-AR...

  • Page 14: Controls

    OFF mode (non modulating). For more details refer to the DDC, RB100, RB200 Manuals and the Design Manual. DDC Controller The main functions are: Setup and control of one (or more) Robur units of the ab- ▶ sorption line (GAHP, GA, AY). Data display and parameters setting.
  • Page 15 11.72 8.37 4.25 4.35 4.42 14.53 11.36 11.81 12.60 8.81 4.64 4.76 4.86 14.97 11.98 12.48 13.35 9.25 5.05 5.19 5.28 15.41 12.63 13.17 14.12 9.69 5.50 5.66 5.77 15.85 13.29 13.87 14.91 Installation, use and maintenance manual – GAHP-AR...
  • Page 16 Features and technical data Water flow rate Outlet water temperature Water flow rate Outlet water temperature 122.0 °F 104.0 °F 86.0 °F 122.0 °F 104.0 °F 86.0 °F ft of head ft of head ft of head ft of head ft of head ft of head 16.29...

  • Page 17: Transport And Positioning

    Transport and positioning Hot water outlet temperature [°F] than those in the tables, contact Robur or your authorized External air temperature distributor. (dry bulb) [°F] ΔT = 18 °F ΔT = 27 °F Heating 77.0 134.8 134.4 129.7 126.2 Table 1.4  p.  17 shows the unitary heat output at full load and in stable operation, depending on hot water delivery tempera- The highlighted value corresponds to the nominal heating capacity.

  • Page 18: Appliance Positioning

    „ Do not install inside a room, not even if it has openings. cles. „ In no event start the appliance inside a room. „ To prevent overflowing and damage provide for a drain- GAHP-AR unit ventilation age system. „ The aerothermic appliance requires a large space, venti- Acoustic issues...

  • Page 19: Mounting Base

    Also provide anti-vibration joints between the appliance ▶ and water and gas pipes. 54” 38” 4" concrete slab (2) - installation on terrace or roof The structure of the building must support the total weight ▶ Installation, use and maintenance manual – GAHP-AR...

  • Page 20: System Design

    National Fuel Gas Code, ANSI Z223.1. If the unit The GAHP-AR unit works with constant, water flow and ON/OFF is installed in Canada, the installation must conform to operative mode.

  • Page 21: Hydraulic Connections

    The primary circulating pump must be obligatorily controlled tomatically starts the primary circulation pump and, if required, by the appliance's electronic board (S61) (see Paragraph the burner too, when the outside temperature approaches 32 °F. Installation, use and maintenance manual – GAHP-AR...
  • Page 22 ABSENT With aluminium or light alloys radiators, pH must also be lower than 8 (in compliance Robur is not liable for ensuring that water quality is al- with applicable rules) ways compliant with what reported in Table 3.2  p.  22 Value referred to the maximum water temperature of 176 °F...

  • Page 23: System Filling

    3.10 COMBUSTION PRODUCTS EXHAUST The appliance and its gas connections must be leaked Compliance with standards The appliance is approved for the connection of the flue Installation, use and maintenance manual – GAHP-AR...

  • Page 24: Flue Gas Condensate Discharge

    Table 1.1  p. 14 is sufficient only to reach the terminal of the flue gas kit supplied. If the GAHP-AR flue gas exhaust must be extended over the supplied kit, the pressure head at the exhaust kit terminal must be considered equal to 0 inch WC.

  • Page 25: Defrosting Water Drainage

    1. Ensure the appliance's electrical panel is not live. „ It is forbidden to use gas pipes as grounding. Installation, use and maintenance manual – GAHP-AR...

  • Page 26: Electrical Power Supply

    The CAN bus communication network, implemented with the cable of the same name, makes it possible to connect and re- motely control one or more Robur appliances with the DDC con- trol device. It entails a certain number of serial nodes, distinguished in: Intermediate nodes, in variable number.
  • Page 27 Insulating tape to protect the shield of the CAN bus cable Eyelet terminal and fixing screw THMFTHRF SRT1 SRT2 JP12 JP11 1 2 3 4 IGN. PUMP MAIN 230V 230V CONTACT BK WHBR Installation, use and maintenance manual – GAHP-AR...
  • Page 28 Electrical installer Figure 4.4   CAN bus connection for systems with multiple single units JTAG JTAG External request Place the CLOSED J21 Jumpers (Detail A) if the node is terminal (one connected CAN bus cable section only), or OPEN (Detail System (2) see also Paragraph 1.6  p. 14 . B) if the node is intermediate (two connected CAN bus cable It is required to arrange: sections).

  • Page 29: Water Circulation Pump

    If the thermostat has a built-in heating an- WITH MORE THAN ONE GAHP-AR UNIT ticipator, this must be set as required by the heating unit load. Figure 4.8  p.  30 shows typical wiring for 2 or more GAHP-AR units. WATER CIRCULATION PUMP It is always necessary to provide a safety transformer (secondary SELV) and a respective control relay.

  • Page 30: First Start-Up

    Check personally that all of the connections (hydraulic, gas ▶ a Robur AT. NEITHER the user NOR the installation tech- and electrical) of the appliance (and of the DDC, if any) have nician is authorised to perform such operations, under been made correctly.

  • Page 31: First Start-Up Operations

    Adjust the gas pressure to the appliance (Paragraph ▶ the guidance of the installer and the CSA design certification 5.4  p. 31 ). does not cover the conditions described therein. Check the dynamic gas mains pressure (if possible on the ▶ Installation, use and maintenance manual – GAHP-AR...

  • Page 32: Gas Changeover

    First start-up GAS CHANGEOVER For propane gas appliances, follow the same instructions as given for natural gas. The manifold pressure for pro- pane gas should be 5.1 inch WC and adjustment is made Only an authorised technician can perform the gas at the gas valve regulator.

  • Page 33: Electronic Adjustment On The Machine - Menus And Parameters Of The S61 Board

    The S61 electronic control board has three fuses for cir- Execute a command (by pressing). ▶ Exit a menu and go back to the higher level by selecting the cuit protection. If the electronic control board does not ▶ Installation, use and maintenance manual – GAHP-AR...
  • Page 34 First start-up letter “E” which is displayed at the end of the menu list or of 7. Turn the knob clockwise to scroll down the other param- a series of parameters in a menu. eters in the menu; the codes will be displayed in order The letter "E"...

  • Page 35: Modifying Settings

    First start-up by AT „ water circuit ready How to switch on/off First start-up may exclusively be carried out by a Robur AT (Chapter 5  p. 30 ). The appliance may be turned on/off, in heating or cooling mode by seasonal heating/cooling switching, to alternatively produce Never power the appliance off while it is running hot water or chilled water, according to climate control needs.

  • Page 36: Efficiency

    Maintenance MODIFYING SETTINGS Switch on the appliance using the on/off command (placing it in the "ON" position). After switching on with the control, in normal operating condi- Modify settings via the DDC tions, the appliance starts/stops automatically according to the user's heating/cooling needs, supplying hot or chilled water at If the device is connected to the DDC control, refer to the the programmed temperature.

  • Page 37: Extraordinary Maintenance

    5. Remove screws holding the burner and insulation retaining If multiple events are active, they are shown in sequence, or- straps. dered by increasing code number. If warning or error events are active, the left green symbol, Installation, use and maintenance manual – GAHP-AR...

  • Page 38: Restarting A Locked-Out Unit

    Maintenance shown together with water temperature data, blinks. At this point, if the appliance still fails to start: If it is a permanent error or warning the appliance stops. Refrain from proceeding by trials and errors. Instead, ask an ▶ (Table 8.1 ...

  • Page 39: Diagnostics

    Diagnostics Installation, use and maintenance manual – GAHP-AR...
  • Page 40 Diagnostics...
  • Page 41 Diagnostics Installation, use and maintenance manual – GAHP-AR...
  • Page 42 Diagnostics...
  • Page 44 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 Corporation advanced technologies for air conditioning 827 E. Franklin Street Evansville, Indiana 47711 USA P (812) 424 1800 F (812) 422 5117 www.robur.com/us sales@robur.com...

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