Robur GAHP-AR Instructions For Installation, Use And Maintenance Manual
Air-water reversible absorption heat pumps for heating and cooling
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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 pumps for heating and cooling powered by gas and renewable energies...
- 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 S.p.A. reserves the right to modify the data and contents of this Installation, use and maintenance manual without prior notice.
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Page 3: Table Of Contents
Antifreeze function ..........p. 13 Antifreeze fluid ............ p. 13 9 Appendices ................p. 31 System water quality ......... p. 14 Product fiche ............p. 31 System filling ............p. 15 Safety devices ............p. 33 Fuel gas supply ............ p. 15 Installation, use and maintenance manual – GAHP-AR... -
Page 4: Iintroduction
INTRODUCTION CONTROL DEVICE Installation, use and maintenance manual In order to be able to work, the GAHP-AR unit needs a This Manual is an integral part of the GAHP-AR unit control device (DDC or external request), which must be and must be handed to the end user together with connected by the installer. - Page 5 „ Do not open the appliance and do not touch inter- nal components before the appliance has cooled Halogenated hydrocarbons containing chlorine down. and fluorine compounds cause corrosion. The air „ Do not touch the flue gas exhaust before it has Installation, use and maintenance manual – GAHP-AR...
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Page 6: Iii.2 Compliance
Warnings of the installation site must be free from aggressive added. substances. 2014/68/EU "Pressure Equipment Directive" as amend- ▶ ed and added. Switching the appliance off 811/2013/EU "Energy-Related Products regulation" as ▶ amended and added. Disconnecting the power supply while the appli- 813/2013/EU "Ecodesign requirements regulation"... -
Page 7: Features And Technical Data
Standard or low noise S fan. or coolant top-ups. ▶ The GAHP-AR unit, for heating and/or cooling systems, is 1.1.3 Control and safety devices able to alternatively (not simultaneously) provide: S61 electronic board with microprocessor, LCD display ▶... -
Page 8: Electronic Boards
1. DDC control 2. external request 1.4.2 DDC Controller The DDC control is able to manage one or more Robur ap- pliances in ON/OFF mode (GAHP heat pumps, GA chillers) or modulating mode (AY boilers). The main functions are: Adjustment and control of one (or more) Robur units ▶... -
Page 9: Technical Data
Possibility to interface with a BMS. with voltage-free NO contact. This system only provides ▶ DDC functionality may be extended with auxiliary Robur elementary control (on/off, with fixed setpoint tempera- devices RB100 and RB200 (e.g. service requests, DHW pro- ture), hence without the important functions of the DDC duction, third party generator control, probe control, sys- control. -
Page 10: Transport And Positioning
Transport and positioning GAHP-AR GAHP-AR S Electrical power absorption nominal 0,84 (3) 0,87 (3) Degree of protection Installation data G20 natural gas (nominal) m³/h 2,72 G25 (nominal) m³/h 3,16 G27 (nominal) m³/h 3,32 Gas consumption G2.350 (nominal) m³/h 3,78 G30 (nominal) -
Page 11: Handling And Lifting
The minimum clearance distances shown in Figure ings. 2.2 p. 12 (bar any stricter regulations) are required for „ In no event start the appliance inside a room. safety, operation and maintenance. GAHP-AR unit ventilation Installation, use and maintenance manual – GAHP-AR... -
Page 12: Mounting Base
Heating engineer MOUNTING BASE Figure 2.2 Clearances 2.5.1 Mounting base constructive features Place the appliance on a level flat surface made of fire- proof material and able to withstand its weight. 2.5.2 Installation at ground level Failing a horizontal supporting base, make a flat and level concrete base, at least 100-150 mm larger than the appli- ance size per side. -
Page 13: Water Pump
„ Do not use car-grade antifreeze fluid (without in- (activated by default) automatically starts the primary wa- hibitors), nor zinc-coated piping and fittings (in- ter pump and, if required, the burner too, when the out- Installation, use and maintenance manual – GAHP-AR... -
Page 14: System Water Quality
Heating engineer 3.6.1 Type of antifreeze glycol compatible with glycol). „ Glycol modifies the physical properties of water Inhibited type glycol is recommended to prevent oxida- (density, viscosity, specific heat...). Size the piping, tion phenomena. water pump and thermal generators accordingly. 3.6.2 Glycol effects „... -
Page 15: System Filling
BG, CH, CZ, ES, GB, GR, HR, IE, IT, LT, LV, MK, PT, SI, SK, TR 2H3P 2ELL3B/P 2Esi3P 2Er3P 2HS3B/P 2E3P GAHP-AR not approved for G25.1, G25.3 gases. GA ACF not approved for G25.1, G25.3, G2.350, G27 gases. Installation, use and maintenance manual – GAHP-AR... -
Page 16: 3.10 Combustion Products Exhaust
2E(R) 2E(S) 3B/P MT, CY GAHP-AR not approved for G25.1, G25.3 gases. GA ACF not approved for G25.1, G25.3, G2.350, G27 gases. 3.9.5 Vertical pipes and condensate Figure 3.2 Components of flue gas exhaust kit If needed, vertical gas pipes must be fitted with siphon ▶... -
Page 17: 3.11 Flue Gas Condensate Drain
Provide for min. 1% slope, i.e. 1 cm for each m of the ▶ length (otherwise a booster pump is required). If several GAHP-AR appliances are connected to a Prevent freezing. single flue, NO check valves must be installed. ▶... -
Page 18: Electrical Systems
Electrical installer Cable segregation Figure 4.1 GAHP/GA electrical panel Keep power cables physically separate from signal ones. Do not use the power supply switch to turn the appliance on/off „ Never use the external isolation switch (GS) to turn the appliance on and off, since it may be damaged in the long run (occasional blackouts are tolerated). -
Page 19: Adjustment And Control
SUPPLIED the cable of the same name, makes it possible to connect GS Main switch and remotely control one or more Robur appliances with the DDC control device. It entails a certain number of serial nodes, distinguished intermediate nodes, in variable number ▶... - Page 20 Electrical installer Figure 4.3 Connection of the CAN bus cable to the electronic board of GAHP/GA units GND H GND H SCH Electronic board of GAHP/GA units GND Common data Data signal LOW Data signal HIGH Onboard CAN bus jumper Detail of "terminal node" case (3 wires; J1 = jumper "closed") Detail of "intermediate node"...
- Page 21 Data signal HIGH J21 CAN bus jumper on DDC board Detail of "terminal node" case (3 wires; J21 = jumper "closed") Detail of "intermediate node" case (6 wires; J21 = jumper "open") P8 CAN port/connector Installation, use and maintenance manual – GAHP-AR...
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Page 22: Water Pump
First start-up entails checking/setting up the com- bustion parameters and may exclusively be carried 5.1.1 Preliminary checks for first start-up out by a Robur TAC. NEITHER the user NOR the in- stallation technician is authorised to perform such Upon completing installation, before contacting the TAC operations, under penalty of voiding the warranty. -
Page 23: Electronic Adjustment On The Machine
(Paragraph 7.5 p. 27 ). Menu "3.", display and setting, to set the value of some ▶ system parameters (e.g. water setpoint temperature); the values are initialised by the TAC at first start-up. Installation, use and maintenance manual – GAHP-AR... -
Page 24: Modifying Settings
Contact a TAC. ously assigned to the parameter will be displayed, NORMAL OPERATION This section is for the end user. The use of the device by the end user is only per- mitted after the Robur authorised TAC has com-... -
Page 25: Warnings
TAC or skilled main- tenance technician. Correct maintenance prevents problems, assures efficiency and keeps running costs low. Any operation on internal components may exclu- sively be performed by the TAC. Maintenance operations described herein may ex- Installation, use and maintenance manual – GAHP-AR... -
Page 26: Pre-Emptive Maintenance
For pre-emptive maintenance, comply with the recommendations in Table 7.1 p. 26 . Table 7.1 Guidelines for the GAHP/GA preventive maintenance operations GAHP A GAHP GS/WS GA ACF GAHP-AR Guidelines for the preventive maintenance operations visually check of the general condition of the unit and of its √ (1) √ (1) √... -
Page 27: Restarting A Locked-Out Unit
"2._XX" is displayed again (e.g. "2.__0"). The reset 3. Switch on the appliance by means of the provided operation has been performed. control device (Paragraph 4.4 p. 19 ). 4. Exit menu 2 and the menu list, by selecting and Installation, use and maintenance manual – GAHP-AR... -
Page 28: Diagnostics
Diagnostics DIAGNOSTICS OPERATIVE CODES Table 8.1 Operative codes GAHP-AR Code Description Warning (u) Error (E) Power cycle the appliance. Flame controller reset circuit If the code persists, shows up again or in case of doubt, con- fault tact the TAC. Limit thermostat trip... - Page 29 Reset is automatic in case of new switching and discontinua- Inversion valve in unknown tion of the generating cause. position If the code shows up again or in case of doubt contact the TAC. Installation, use and maintenance manual – GAHP-AR...
- Page 30 Diagnostics Reset is automatic in case of new switching and discontinua- Inversion valve in uncertain tion of the generating cause. position If the code shows up again or in case of doubt contact the TAC. Non-blocking Warning (informative Reset may be performed from the DDC or from the S61 board Defrosting valve has failed to code).
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Page 31: Appendices
Contact details Robur SPA, Via Parigi 4/6, I-24040 Zingonia (BG) (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh , and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj) . - Page 32 Contact details Robur SPA, Via Parigi 4/6, I-24040 Zingonia (BG) (*) For heat pump space heaters and heat pump combination heaters, the rated heat output Prated is equal to the design load for heating Pdesignh , and the rated heat output of a supplementary heater Psup is equal to the supplementary capacity for heating sup(Tj) .
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Page 33: Safety Devices
* The manufacturer guarantees the functioning and the safety of the unit only if it is equipped with original spare parts In the case of replacement, the use of original 9.2 p. 33 ). The manufacturer is exempt from any spare parts is recommended (see codes in Table contractual or extra-contractual responsibility for Installation, use and maintenance manual – GAHP-AR... - Page 34 Appendices damage caused by the use of non-original spare Figure 9.5 Detail of safety valve mounted on unit - Description parts. of components involved in the operation 9.2.3 Safety valve replacement operations This operation must be performed by profession- ally qualified staff.
- Page 35 1. development of a large amount of non-condensable and non-absorbable gas, produced of the corrosion reaction, which causes an accumulation of these gases in the generator and, consequently, immediate over- heating of the generator. This is caused by the inter- Installation, use and maintenance manual – GAHP-AR...
- Page 36 Appendices ruption of the water-ammonia solution evaporation process. 2. production of rust which, detaching from the internal walls of the hermetic circuit, rapidly blocks the circu- lation of refrigerant fluid, thus blocking the orifices of the restrictors. This situation leads to a lack of wa- ter-ammonia solution to be evaporated in the gener- ator and causes the same over-heating phenomenon.
- 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 S.p.A. advanced technologies for air conditioning via Parigi 4/6 24040 Verdellino/Zingonia (BG) Italy +39 035 888111 - F +39 035 884165 www.robur.com export@robur.it...
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