Carrier 48EH Installation, Operation And Maintenance Instructions Download

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I N STA L L AT I O N , O P E R AT I O N A N D

M A I N T E N A N C E I N S T R U C T I O N S

48EN/EH

Nominal cooling capacity 58,9 - 135,5 kW

Nominal heating capacity 62,2 - 143,4 kW

50 Hz

Packaged rooftop cooling only / heat pumps

with integrated gas burner

Original document

Summary of Contents for 48EH

Page 1: ...ERATION AND MAINTENANCE INSTRUCTIONS 48EN EH Nominal cooling capacity 58 9 135 5 kW Nominal heating capacity 62 2 143 4 kW 50 Hz Packaged rooftop cooling only heat pumps with integrated gas burner Ori...

Page 2: ...ommissioning and maintenance operations 8 7 Gas Burner 9 Operating principle 9 Control of the gas burner 10 8 Safety elements 11 Safety devices in the gas burner 11 Safety devices in the 48EN EH unit...

Page 3: ...lation and reliable operation Space 48EN Series Autonomous air air cooling units with a compact horizontal rooftop design with a built in gas burner Space 48EH Series Autonomous reversible air air hea...

Page 4: ...5 900 18 000 18 200 20 400 24 000 Available static pressure mm w c 12 12 12 12 12 12 12 12 15 15 Type Centrifugal Number no turbines 2 2 Motor output kW 2 x 1 5 2 x 2 2 2 x 3 2 x 1 1 2 x 2 2 2 x 2 2 2...

Page 5: ...ents during installation commissioning or maintenance it is required to take into consideration the units specifications refrigerated circuits under pressure refrigerant presence voltage presence and...

Page 6: ...said vapours Although the R 410A is not flammable when in contact with a flame or hot spot it can decompose thus producing fluorhydric acid HF and fluophosgene COF2 which are highly toxic and corrosiv...

Page 7: ...re can withstand the weight of the unit Since the unit is designed to work outdoors some specific installation norms must be followed The unit will be located on the roof of the premises If it is fore...

Page 8: ...02 450 404 66 414 368 1805 MA MC0 1845 2095 137 498 438 63 424 364 1925 322 MO 1845 2095 72 432 397 74 433 398 1806 MS 1845 2095 107 471 423 69 434 385 1888 MA MC0 1845 2095 143 520 457 66 443 380 200...

Page 9: ...lectrode nozzle Control device On off signal Burner fan EVP pilot light flame EV1 1st electromagnetic valve gas EV2 2nd electromagnetic valve gas A B C D E F Operation of the air gas premix The air an...

Page 10: ...imit the power supplied by the burner This avoids the stratification of the hot air masses and that the outlet air temperature exceeds a maximum safety level 55 C by default which will cause the burne...

Page 11: ...or the modulation are outside the range Failure in the fan motor F4 F5 F6 Unused F7 No serial communication The remote control is disconnected F8 The flame control device does not work The flame contr...

Page 12: ...utomatic reactivation It is installed in the auxiliary electric panel Anti fire safety device This safety device integrated in the control shuts down the unit if the probe located in the return detect...

Page 13: ...ces etc refer to The information supplied in this document table of technical characteristics Data plate The wiring diagram and the legend supplied with the unit The CARRIERrtc electronic control broc...

Page 14: ...burns Note The gas burner chimney is not supplied with the unit Its design and installation is the responsibility of the engineer and must comply with all the directives and regulations in force in t...

Page 15: ...ibration transmission Air ducts connections Checks in the axial fans Before commissioning check the blade rotation direction and that the axis turns without strokes nor vibrations Once running check t...

Page 16: ...Condensates outlet Before commissioning check the blade rotation direction and that the axis turns without strokes nor vibrations Once running check the operation conditions pressures flows and consum...

Page 17: ...unit and all the components used This will be very helpful for maintenance and repairs to the installation Check that the electrical power supply matches the unit voltage and that its value lies with...

Page 18: ...means this has to be taken into account in the selection of higher pressure fans optional or in the substitution of the standard pulley set with a new set that generates a higher turn speed to the pa...

Page 19: ...ually Depending on the installation conditions the filter aspect must be examined to define the cleaning periodicity Gravimetric filters Cleaning the filtering mesh can be done with a household vacuum...

Page 20: ...f the charge Note Both the oil type as well as the volume needed for each model are stated in the Technical characteristic tables in chapter 3 Caution Before starting any maintenance operations ensure...

Page 21: ...n Burner Safety Devices Open the valve unblock the control and check that the burner is operating correctly 8 The safety thermostat and the air differential pressostat With the burner in operation ope...

Page 22: ...rature of air or water in condenser very low air or water flow very high adjust flow f Repair Compressor does not start does not make noise humming a No power b The contacts of a control element are o...

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Page 24: ...Order No 10051 03 2015 Supersedes order No New Manufactured for CARRIER in Spain The manufacturer reserves the right to change the specification without prior notice Printed in the European Union...