Lennox AAH051 Application Manual
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Lennox AAH051 Application Manual

Polyvalent air cooled heat pump
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APPLICATION
GUIDE
Polyvalent air cooled heat pump
50  330 kW
AQUA
4
AAH
AQUA4-AGU-1405-E
lennoxemeia.com

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Summary of Contents for Lennox AAH051

  • Page 1 APPLICATION GUIDE AQUA Polyvalent air cooled heat pump 50  330 kW AQUA4-AGU-1405-E lennoxemeia.com...

  • Page 3: Table Of Contents

    Table of Contents ......................1 1 TABLE OF CONTENTS ..................2 2 MODEL NUMBER DESCRIPTION ....................3 3 KEY CUSTOMER BENEFITS ........................ 3 3.1 T AQUA ........................ 3 3.2 T AQUA ........................3 3.3 B ENEFITS ....................4 4 FEATURES AND BENEFITS .....................

  • Page 4: Model Number Description

    MODEL NUMBER DESCRIPTION The AQUA units are identified by the following codes: Example AAH081MS AQUA Air Cooled Heat Pump Nominal Cooling capacity x10 [kW] (ex.: 08 = 80 kW) 1 = 2 compressors / 2 circuits 4 = 4 compressors / 2 circuits M= 2 pipes P= 4 pipes S= standard noise level...

  • Page 5: Key Customer Benefits

    KEY CUSTOMER BENEFITS Nominal cooling capacity @ 12/7°C and 35°C air ambient: 50 to 330kW Nominal heating capacity @ 40/45°C and 7°C air ambient: 50 to 340kW 3.1 The AQUA P: unique concept for thermal comfort with less energy consumption. The polyvalent heat pump AQUA P units are designed to meet the requirements of simultaneous and independent cooling and heating for air conditioning in the most efficient way.

  • Page 6: Features And Benefits

    FEATURES AND BENEFITS 4.1 Standard equipment • R410A refrigerant • Two refrigerant circuits • ISO 9001 certification. • Compliant with CE norms (PED directive 97'23) • Galvanized steel base frame powder coated RAL7031 • Galvanized steel cabinet powder coated panels RAL9002 •...

  • Page 7: Innovations Product : Solving The Defrosting Problem

    4.2 Innovations Product: solving the defrosting problems Thanks to two independent thermodynamic circuits, the AQUA unit is essential on the market as an exclusive solution that can continue to produce hot water for heating or sanitary uses while simultaneously performing a defrosting cycle. During winter, especially in the -3°C - +3°C range, the high relative air humidity condenses water around the coil fins.

  • Page 8: Control And Communication

    (optional). Thermal protection, however, is carried out by thermistor chains. These are set in the windings of each electric motor and are controlled by onboard electronics. All units are equipped as standard with a phase sequence relay which inhibits compressor operation if the phase sequence is not carried out: only one direction of rotation is possible for scroll compressors, as well as for the screw and Rotary compressors.

  • Page 9: Options And Accessories

    Options and Accessories Options Features and Benefits Power supply Supply 400V / 3 ph / 50Hz with 230V transformer and fuses Supply without neutral with a 230V transformer and fuses. Supply with neutral, the fuses have been replaced by Supply 400V / 3 ph + Neutral / 50Hz with circuit breakers thermomagnetic circuit breakers.
  • Page 10 Options Features and Benefits Antifreeze protection Electrical trace heating and reinforced insulation on the both braze Antifreeze protection on exchangers and pipes plate heat exchangers and pipes. Antifreeze protection on exchangers, pipes, pump(s) and Electrical trace heating and reinforced insulation on the brazed expansion vessel plate heat exchangers, pipess, pump(s) and the expansion vessel.
  • Page 11 Accessories Features and Benefits Accessories Capacitors fitted into unit. Cos phi correction up to 0.95 to reduce Power factor Correction current and energy consumption. Electronic soft starter included in the control panel. Reduces the peak starting current by up to 40%. They also participate in the installation design optimization of the electrical cables and reduce Soft starter the mechanical stresses on the compressors.

  • Page 12: Application

    Application The AQUA units allow creating installations with 2 or 4 pipes. The designation 2 or 4 pipe refers to the system of the water distribution for each building system. A 2 pipe system comprises a single supply and a single hydraulic line back to the unit. The terminal units of a system to 2 pipes are characterized by a single exchanger having the coil function of heating or cooling depending on the operating mode.
  • Page 13 Example of 2 pipe installation for Hotel and Hospital: AQUA –AGU-1405-E - 11 -...
  • Page 14 Operating modes available for AQUA P units will allow provision of hot and cold water simultaneously. - Circuit 1: Production of cold water for cooling - Circuit 2: Hot water production or total heat recovery for heating or preheating hot water for example. Cooling Heating Cooling + Heating...
  • Page 15 Example of 4 pipe installation for office or residential buildings: Below is shown an example of an inertial tank with double cycle inversion (on demand) for winter and summer air conditioning, in combination with a 2-pipe heating system. The double cycle inversion valve (automatically controlled by onboard microprocessor) provides the best performance as it favours tank stratification in both summer and winter modes.

  • Page 16: Operating Combination Depending On The Thermal Load

    Operating combination depending on the thermal load: The following tables show the possible operating regimes of the AQUA units at partial loads. The units are equipped with two thermodynamic circuits and two or four compressors that combine their operations to meet the changing demands of the heating system.
  • Page 17 - AQUA P (2 pipe) units: 4 compressors / 2 thermodynamic circuits : All the year : Summer to winter 100% Cooling 75% Cooling 50% Cooling 25% Cooling 100% Cooling + 50% to 100% Heating 75% Cooling + 25% to 75% Heating 50% Cooling + 25% to 100% Heating 25% Cooling + 25% to 75% Heating 100% Heating...

  • Page 18: Operating Limits

    Operating Limits This paragraph lists the operating limits of the AQUA M and AQUA P heat pumps, in relation to utility circuit water outlet temperature and air temperature. The nominal flow rate refers to a temperature differential of 5° C between inlet and outlet water, in relation to the cooling capacity provided at nominal water temperatures.

  • Page 19: Technical Data - Performances

    Operating range of the AQUA units in cooling mode and with heat pump in concurrent mode: Air ambient temperature Operating range of the AQUA units in full recovery mode: Température de sortie d’eau du circuit froid - ∆T=5°C Outlet water temperature of cold circuit - ∆T=5°C The diagrams were plotted with a temperature differential at the plate exchangers (water circuit) of 5°C Technical Data - Performance Performance was calculated in countercurrent to the plate heat exchangers.
  • Page 20 Nb of compressor 2 AQUA –AGU-1405-E - 18 -...
  • Page 21 M and AQUA P standard S version from AQUA 041 to AQUA 081 in nominal conditions : Unit M (2 pipes) et P (4 pipes) version S AAH041 AAH051 AAH061 AAH071 AAH081 Cooling at 12/7°C with air ambient at 35°C Cooling capacity 49.7...
  • Page 22 Power supply 400 / 3+N / 50 Maximum absorbed current (FLA) [without options] Start up current (LRA) [without options] Start up current with soft starter [without options] Number of fans Air flow m3/h 21379 21379 30913 30913 30913 Absorbed power of fans Absorbed current of fans Sound power level Lw db(A)
  • Page 23 Table 2 – General data of AQUA M and AQUA P standard S version from AQUA 094 to AQUA 194 in nominal conditions : Unit M (2 pipe) and P (4 pipe) version S AAH094 AAH104 AAH124 AAH144 AAH164 AAH194 Cooling at 12/7°C with air ambient at 35°C Cooling capacity 98.4...
  • Page 24 Power supply 400 / 3+N / 50 Maximum absorbed current (FLA) [without options] Start up current (LRA) [without options] Start up current with soft starter [without options] Number of fans Air flow m3/h 41340 41340 72700 72700 67672 67672 Absorbed power of fans Absorbed current of fans Sound power level Lw db(A)
  • Page 25 Table 3 – General data of AQUA M and AQUA P standard S version from AQUA 214 to AQUA 324 in nominal conditions : Unit M (2 pipe) and P (4 pipe) version S AAH214 AAH244 AAH274 AAH294 AAH324 Cooling at 12/7°C with air ambient at 35°C Cooling capacity 216.3 258.6...
  • Page 26 Power supply 400 / 3+N / 50 Maximum absorbed current (FLA) [without options] Start up current (LRA) [without options] Start up current with soft starter [without options] Number of fans Air flow m3/h 75478 75478 103511 97902 97902 Absorbed power of fans Absorbed current of fans Sound power level Lw db(A)
  • Page 27 ACOUSTIC DATA Maximum Maximum sound Spectrum per octave band dB(A) global sound pressure at 10 power. meters AAH M & P 1,000 2,000 4,000 8,000 dB(A) dB(A) S Version Maximum Maximum sound Spectrum per octave band dB(A) global sound pressure at 10 power.
  • Page 28 HP: 3.2 [A] abs. nom. current LP: 2.7 [A] abs. nom. current HP: 2.7 [A] Available Head pressure [kPa] for AAH051 S pumps Available Head pressure [kPa] for AAH051 S pumps (single or normal/backup switching operation) (parallel operation)
  • Page 29 Available Head pressure [kPa] for AAH061 S pumps Available Head pressure [kPa] for AAH061 S pumps (single or normal/backup switching operation) (parallel operation) High pressure High pressure Pump Pump Low Pressure Low Pressure Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 30 Available Head pressure [kPa] for AAH081 S pumps Available Head pressure [kPa] for AAH081 S pumps (single or normal/backup switching operation) (parallel operation) High pressure High pressure Pump Pump Low Pressure Low Pressure Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 31 Available Head pressure [kPa] for AAH104 S pumps Available Head pressure [kPa] for AAH104 S pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 32 Available Head pressure [kPa] for AAH144 S pumps Available Head pressure [kPa] for AAH144 S pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 33 Available Head pressure [kPa] for AAH194 S pumps Available Head pressure [kPa] for AAH194 S pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 34 Available Head pressure [kPa] for AAH244 S pumps Available Head pressure [kPa] for AAH244 S pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 35 Available Head pressure [kPa] for AAH294 S pumps Available Head pressure [kPa] for AAH294 S pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 36 HP: 3.2 [A] abs. nom. current LP: 2.7 [A] abs. nom. current HP: 2.7 [A] Available Head pressure [kPa] for AAH051 L pumps Available Head pressure [kPa] for AAH051 L pumps (single or normal/backup switching operation) (parallel operation)
  • Page 37 Available Head pressure [kPa] for AAH061 L pumps Available Head pressure [kPa] for AAH061 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 38 Available Head pressure [kPa] for AAH081 L pumps Available Head pressure [kPa] for AAH081 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 39 Available Head pressure [kPa] for AAH104 L pumps Available Head pressure [kPa] for AAH104 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 40 Available Head pressure [kPa] for AAH144 L pumps Available Head pressure [kPa] for AAH144 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 41 Available Head pressure [kPa] for AAH194 L pumps Available Head pressure [kPa] for AAH194 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 42 Available Head pressure [kPa] for AAH244 L pumps Available Head pressure [kPa] for AAH244 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.
  • Page 43 Available Head pressure [kPa] for AAH294 L pumps Available Head pressure [kPa] for AAH294 L pumps (single or normal/backup switching operation) (parallel operation) High pressure Pump High pressure Pump Low Pressure pump Low Pressure pump Pure water flow rate [l/h] Pure water flow rate [l/h] abs.

  • Page 44: Overview Diagrams

    Overview Diagrams AAH PS PL MS ML 041 and 051  Box F1+ AAH PS PL MS ML 061, 071 and 081  Box F2+ AQUA –AGU-1405-E - 42 -...
  • Page 45 AAH PS PL MS ML 094 and 104  Box F3+ AAH PS PL MS ML 124, 144, 164 and 194  Box F4 AQUA –AGU-1405-E - 43 -...
  • Page 46 AAH PS PL MS ML 214 and 244  Box F5 AAH PS PL MS ML 274, 294 and 324  Box F6 AQUA –AGU-1405-E - 44 -...

  • Page 47: Installation

    Delivery Note before signing it. LENNOX or its commercial reference must be promptly notified regarding the extent and type of damage. The Customer must submit a written report describing any significant damage.

  • Page 48: Water Connections

    Unpacking Carefully remove any packaging to avoid damaging the machine. Different packaging materials are used: wood, cardboard, nylon etc. Keep them separate and dispose of them at appropriate waste disposal or recycling facilities in order to minimise the environmental impact. Once the machine is positioned, loosen the bolts to remove the pallet.
  • Page 49 temperature and pressure indicators for routine maintenance and inspections of the unit. Pressure control on the water side allows expansion vessel operation to be checked and any water leaks in the system to be detected in advance. Sumps on inlet and outlet piping for measuring temperatures, and for directly viewing the operating temperatures. They can also be viewed on the display on board the unit (if pCO).

  • Page 50: Electrical Connections

    Drain the expansion vessel until the pressure reaches 0.5 bar Fill the system and pressurise it to approximately + 1 bar in pump suction (pump stopped) Bleed the system Check the pump suction pressure (approximately 1 bar) and start up the system Stop the pump after 15-30 minutes.
  • Page 51 Maximum water side pressure: = 3 bar Maximum pressure on high pressure circuit R410A = 42 bar-r Maximum pressure on low pressure circuit R410A = 29 bar-r (*) Power supply voltage: = +/- 10% compared to plate voltage Maximum storage T = + 50 °C Minimum storage T = - 20 °C (limit set by on-board electronics)
  • Page 52 LENNOX DISTRIBUTION PORTUGAL  +33 4 72 23 20 20  +351 229 066 050 Due to Lennox’s ongoing commitment to quality, the specifi cations, ratings and dimensions are subject to change without notice and without incurring liability. Improper installation,...

This manual is also suitable for:

Aah041Aqua4 aah seriesAah071Aah081Aah094Aah104 ... Show all

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