Robur GA ACF Installation, Use And Maintenance Manual
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Robur GA ACF Installation, Use And Maintenance Manual

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Summary of Contents for Robur GA ACF

  • Page 1 Installation, use and maintenance manual GA ACF absorption chiller 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

    Set-up and control ............p. 26 III Warnings ..................p. 4 Water circulation pump ..........p. 29 General and safety warnings ........p. 4 III.1 With more than one GA ACF unit ......p. 30 III.2 Conformity ................ p. 6 5 First start-up ................p. 31 III.3 Exclusions of liability and warranty ......

  • Page 4: Iintroduction

    CONTROL DEVICE In order to be able to work, the GA ACF unit needs a control de- RECIPIENTS vice (DDC or external request), which must be connected by the installer.
  • Page 5 „ Enter into a maintenance contract with an authorised eration on appliance components. specialised firm for routine maintenance and for servic- „ For electrical connections exclusively use compli- ing in case of need. ant components and according to the specifications Installation, use and maintenance manual – GA ACF...

  • Page 6: Iii.2 Conformity

    Warnings „ Use only original parts. Fire safety and prevention. ▶ Any other applicable law, standard and regulation. ▶ Decommissioning and disposal III.3 EXCLUSIONS OF LIABILITY AND If the appliance is to be disposed of, contact the manu- WARRANTY facturer for its disposal. Keep the Manual Any contractual or extra-contractual liability of the manufacturer for any damage caused by incorrect in-...

  • Page 7: Features And Technical Data

    The thermodynamic cycle takes place within a hermetically sealed circuit, in welded construction, perfectly tight, factory- Versions tested, which does not require any maintenance or coolant The GA ACF unit is available in the following versions: top-ups. ACF standard, for residential/retail/industrial cooling sys- ▶...
  • Page 8 Features and technical data Figure 1.2   ACF Service plate with plumbing and gas connections 6-1/2” Water outlet connection Ø 1 1/4" F Water inlet connection Ø 1 1/4" F Electrical knockouts Ø 7/8" Gas fitting Ø 1/2" F 4-1/4” 7-1/8” Figure 1.3   ACF-HR Service plate with plumbing and gas connections 11-15/16”...

  • Page 9: Components

    Combustion air intake Oil pump Room temperature probe Combustion blower Water inlet connection Ø 1 1/4" F Gas valve Water outlet connection Ø 1 1/4" F Electrical panel Gas connection Ø 1/2" F Installation, use and maintenance manual – GA ACF...
  • Page 10 Features and technical data Figure 1.5   Internal components - left side view     Ignition transformer Flue thermostat Ignitor and flame detectors...
  • Page 11 Features and technical data Figure 1.6   Internal components - right side view Safety valve Limit thermostat TCN probe Return temperature probe Flow temperature probe TG generator temperature probe Flow switch Installation, use and maintenance manual – GA ACF...

  • Page 12: Electrical Wiring Diagram

    In Figure 1.7  p.  12 , below, thermostat THL (hot water outlet thermostat) is placed only on ACF 60-00 HR. Igniter and flame sensor wire have to be replaced with Figure 1.7   GA ACF unit wiring diagram ELECTRONIC BOARDS The appliance's electrical panel contains: operative codes.

  • Page 13: Controls

    DDC Controller The main functions are: For connection of the selected device to the appliance's Setup and control of one (or more) Robur units of the ab- electronic board please refer to Paragraph 4.4  p. 26 . ▶ sorption line (GAHP, GA, AY).

  • Page 14: Technical Data

    Features and technical data TECHNICAL DATA Table 1.1   GA ACF technical data ACF 60-00 ACF 60-00 ACF 60-00 ACF 60-00 ACF 60-00 Operation in cooling mode Cooling capacity nominal Btu/hr 60500 (1) 58400 (1) 45400 (2) Gas input (HHV) nominal Btu/hr...
  • Page 15 Figure 1.10   ACF60-00 LB unit internal pressure drop as a function of water flow rate 18.00 16.00 ACF60-00 LB 14.00 12.00 10.00 8.00 6.00 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 Ethylene glycol (40%) + water ow [GPM] Installation, use and maintenance manual – GA ACF...
  • Page 16 24.8 70200 70200 70200 71410 do not extrapolate. For capacities at ambient temperatures high- 32.0 69595 69595 69595 70200 er than in table, contact Robur or your authorized distributor. 39.2 68989 68989 68989 69595 ACF standard 46.4 67779 68384 68384 68989 53.6...
  • Page 17 45337 47580 49174 50768 full load and in stable operating mode, depending on the tem- 91.4 42084 44502 46919 48605 50291 perature of the thermal input fluid to the recuperator and the Installation, use and maintenance manual – GA ACF...

  • Page 18: Transport And Positioning

    Transport and positioning outdoor temperature for different water flow rates to the recu- Table 1.10   ACF60-00 HR - Heat capacity of the heat recovery unit for perator, referring to the ACF 60-00 HR unit. conditions other than nominal ones; flow rate = 6.6 GPM Consider that in the absence of a refrigeration request no recov- Heat capacity [Btu/hr] (flow rate = 6.6 GPM) erable heat output will be available.

  • Page 19: Appliance Positioning

    (Figure 2.3  p. 20 ). intakes of the building. For installations on balconies or roofs, the appliance should not be located within 8 feet from chimney Installation, use and maintenance manual – GA ACF...

  • Page 20: Mounting Base

    Transport and positioning Figure 2.3   Clearances from vent outlets, chimney flues and air intake openings 6 FT. MIN 8 FT. MIN. 8 FT. MIN. Roof/Terrace installation Ground installation MOUNTING BASE Although approved for installation on a combustible ▶ base, the appliance must not be installed directly on the roof surface.

  • Page 21: System Design

    Figure 3.1   2-pipe tank diagram Anti-vibration connection Pressure gauge Inlet flow control device Water filter Shut-off valves Water pump (primary circuit) Safety valve Expansion tank Hydraulic separator Water pump (secondary circuit) 2-connection inertial buffer tank Installation, use and maintenance manual – GA ACF...

  • Page 22: Hydraulic Connections

    System design Figure 3.2   4-pipe tank diagram Anti-vibration connection Pressure gauge Inlet flow control device Water filter Shut-off valves Water pump (primary circuit) Safety valve Expansion tank 4-connection inertial buffer tank Water pump (secondary circuit) HYDRAULIC CONNECTIONS Pipe cleaning „ Before connecting the appliance,accurately wash the Plumbing fittings water and gas piping and any other system component, on the right, at the bottom, connection plate...
  • Page 23 Langelier’s index 0-0.4 dustrial heating systems. Harmful substances Free chlorine < 0.2 (3) Robur is not liable for ensuring that water quality is Fluorides < 1 Installation, use and maintenance manual – GA ACF...

  • Page 24: System Filling

    System design may be required by local codes (Figure 3.4  p. 24 ). Sulphides ABSENT Be sure to use materials resistant to the LPG corrosive action ▶ when making pipe connections. Use an approved sealing With aluminium or light alloys radiators, pH must also be lower than 8 (in compliance with applicable rules) compound resistant to propane gas on all male pipe threads.

  • Page 25: Electrical Installer

    1. Access the electrical board of the appliance according to tronic board (S61). It is not admissible to start/stop the the Procedure 4.2  p. 25 . Installation, use and maintenance manual – GA ACF...

  • Page 26: Set-Up And Control

    CAN bus communication network 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. PUMP 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 – GA ACF...
  • 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. 13 . B) if the node is intermediate (two connected CAN bus cable It is required to arrange: sections).

  • Page 29: Water Circulation Pump

    N.O. contact on the S61 board (Figure 4.7  p. 29 ). Jumper J10 must be opened if the pump is > 700 W, otherwise it must be closed. Installation, use and maintenance manual – GA ACF...

  • Page 30: With More Than One Ga Acf Unit

    Electrical installer WITH MORE THAN ONE GA ACF UNIT Figure 4.8   Recovery exchanger pump connection Figure 4.9  p.  30 shows typical wiring for 2 or more GA ACF GND L H units. SRT1 SRT2 JP12 It is always necessary to provide a safety transformer (secondary SELV) and a respective control relay.

  • Page 31: First Start-Up

    Appliance defects or faults caused during transport or instal- ▶ a Robur AT. NEITHER the user NOR the installation tech- lation. nician is authorised to perform such operations, under Gas smell.

  • Page 32: Check The Static Gas Mains Pressure

    First start-up Switch on the appliance by means of the provided control Specific gravity of natural gas ▶ MJ/m³ Btu/CU.FT. device (DDC or external request). 0.55 0.60 0.65 0.70 Adjust the gas pressure to the appliance (Paragraph 37.78 1014 2.50 ▶...

  • Page 33: Gas Changeover

    Gas supply pipe ELECTRONIC ADJUSTMENT ON THE MACHINE – MENUS AND PARAMETERS OF THE S61 BOARD Firmware The instructions on the use of the S61 electronic board concern the firmware version 3.035. Installation, use and maintenance manual – GA ACF...
  • Page 34 First start-up The appliance's electronic board (S61) display and setting (parameters) or control (reset). The menu entries will be identified on the display of the elec- tronic control board through a number, where its maximum Figure 5.4   Electronic board S61 value is 3 digits (lined up at right). The visualization is characterized by the presence (on the 1st digit of display) of the menu identification number (example: indicates entry 0, menu 0;...

  • Page 35: Modifying Settings

    (total of 3 ignition trials) before going into lockout. Upon lockout, the gas valve will de- energize immediately and the pre-mixer blower will turn off. The thermostat (“W” terminal), air pressure switch and burner Installation, use and maintenance manual – GA ACF...

  • Page 36: Normal Operation

    First start-up by AT user's cooling needs, supplying chilled water at the programmed temperature. First start-up may exclusively be carried out by a Robur AT (Chapter 5  p. 31 ). Although the external request is in the "ON" position, this does not mean the appliance will start immediately, but Never power the appliance off while it is running it will only start when there are actual service demands.

  • Page 37: Scheduled Routine Maintenance

    If the fan is at an improper height, adjust the location of the Be careful not to distort or damage the burner tube or mounting strap around the fan motor. the flame sensor / ignition electrodes assemblies in the Installation, use and maintenance manual – GA ACF...

  • Page 38: Extraordinary Maintenance

    Maintenance generator housing. or "E" = error). To restart the appliance you must know and perform the ▶ procedure concerning the issue signalled and identified by 7. Position the burner tube with open end down. 8. Clean burner tube ports with fiber bristle brush and shake the code (Paragraph 8.1 ...

  • Page 39: Periods Of Inactivity

    (Detail GS in control device (DDC or external request, Paragraph Figure 4.1  p. 26 ). 4.4  p. 26 ). 3. Close the gas valve. 4. If necessary, add water with glycol (if the appliance is Installation, use and maintenance manual – GA ACF...

  • Page 40: Diagnostics

    Diagnostics...
  • Page 41 Diagnostics Installation, use and maintenance manual – GA ACF...
  • 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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