Kroll LH Series Technical Information Assembly, Use And Maintenance Instructions
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Kroll LH Series Technical Information Assembly, Use And Maintenance Instructions

Water-fed fan heaters
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TECHNICAL INFORMATION ASSEMBLY, USE AND
MAINTENANCE INSTRUCTIONS
Water-Fed Fan Heaters
SERIES LH / LH-X

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  • Page 1 TECHNICAL INFORMATION ASSEMBLY, USE AND MAINTENANCE INSTRUCTIONS Water-Fed Fan Heaters SERIES LH / LH-X...

  • Page 2: Warranty

    Kroll Technical Service only so as to ensure optimum performance at all times, low running costs and immediate availability of original spare parts.
  • Page 3 INDEX CONFORMITY Page. RANGE WARRANTY INDEX GENERAL INFORMATION Page. IMPORTANT SAFETY REGULATIONS “ DESCRIPTION OF UNIT “ PRODUCT RECEPTION Page. HANDLING AND TRANSPORT “ REMOVING THE PACKAGING “ IDENTIFICATION “ OVERALL DIMENSIONS AND WEIGHT “ STRUCTURE “ TECHNICAL DATA “ PERFORMANCES WITH WATER AT 90-70°C PERFORMANCES WITH WATER AT 85-70°C PERFORMANCES WITH WATER AT 50-40°C...

  • Page 4: General Information

    GENERAL INFORMATION This manual is an integral part of the product. Always If the unit has remained idle for a long period, it is make sure the unit is accompanied by this manual so advisable to have it restarted by an authorised that it can be consulted by the user, installer or any Technical Assistance Service or, in any case, by specialised Assistance Service personnel, even in...

  • Page 5: Important Safety Regulations

    IMPORTANT SAFETY REGULATIONS It is forbidden for children or unassisted Do not dump packaging (plastic bags, expanded disabled persons to use this unit. polystyrene etc.) improperly. Keep such packaging away from children as it is dangerous. For proper Never touch the unit if you are barefoot or if any disposal consult your local authorities.

  • Page 6: Handling And Transport

    HANDLING AND TRANSPORT Handling must be done by properly equipped personnel. Unit’s types 7-8-9 are packaged in a cardboard case All equipment must be suitable to handle the weight of with a wooden base. Raise the case with a fork-lift truck the unit.

  • Page 7: Overall Dimensions And Weight

    IDENTIFICATION The water-fed fan heaters can be identified by: • If the plaque is damaged or lost request a The TECHNICAL DATA plaque (positioned on the duplicate from an Authorised Technical Service. rear unit) which shows main technical/performance data. MANUFACTURER IDENTIFICATION WATER-FED FAN HEATER Technical data label...
  • Page 8 Type 1200 1400 1139 1339 ∅ Weight 17.0 18.2 19.2 20.6 22.2 24.8 25.6 27.0 30.5 32.0 32.0 35.7 41.0 44.4 58.7 63.8 70.6 76.3 Kg Structure of Heater Types 1 - 14 Structure of Heater Types 15 - 18 Water-air heat exchanger Fixing part Side panel, left...
  • Page 9 NOISE LEVEL WATER MAX AIR AIR OUTFLOW WATER FAN SPEED PROTECTION NUMBER OF ELECTRICAL ELECTRICAL ELECTRICA HEATING CAPACITY SIDE TECHNICAL DATA TYPE DELIVERY OUTFLOW TEMP FLOW RANGE POWER SUPPLY DEGREE POWER L CURRENT HEAD NUMBER OF FANS RATE RANGE RATE MAX-MED-MIN dB(A) LOSS...
  • Page 10 TYPES 1 AND 2, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 1 at maximum fan speed with water 90 – 70°C °C Air intake temperature 13,7 12,5 11,3 Thermal output 11.750 10.750 9.750 Kcal/h...
  • Page 11 TYPES 3 AND 4, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 3 at maximum fan speed with water 90 – 70°C Air intake temperature °C 18,1 16,6 15,1 Thermal output 15.600 14.300 12.950 Kcal/h...
  • Page 12 TYPES 5 AND 6, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 5 at maximum fan speed with water 90 – 70°C Air intake temperature °C 22,6 20,8 18,8 Thermal output 19.450 17.850 16.200 Kcal/h...
  • Page 13 TYPES 7 AND 8, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 7 at maximum fan speed with water 90 – 70°C Air intake temperature °C 28,1 25,8 23,4 Thermal output 24.200 22.150 20.100 Kcal/h...
  • Page 14 TYPES 9 AND 10, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 9 at maximum fan speed with water 90 – 70°C °C Air intake temperature 32,7 29,9 27,2 Thermal output 28.150 25.750 23.400 Kcal/h...
  • Page 15 TYPES 11 AND 12, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 11 at maximum fan speed with water 90 – 70°C Air intake temperature °C 40,1 36,6 33,2 Thermal output 34.450 31.500 28.550 Kcal/h...
  • Page 16 TYPES 13 14 15, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 13 at maximum fan speed with water 90 – 70°C Air intake temperature °C 48,6 44,5 40,3 Thermal output 41.800 38.250 34.700 Kcal/h...
  • Page 17 TYPES 16 17 18, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 90-70°C Fan heater type 16 at maximum fan speed with water 90 – 70°C °C Air intake temperature 90,4 82,6 74,9 Thermal output 77.750 71.050 64.400 Kcal/h...
  • Page 18 TYPES 1 AND 2, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 1 at maximum fan speed with water 85 – 70°C Air intake temperature °C 13,3 12,2 Thermal output 11.450 10.450 9.450 Kcal/h 1.750...
  • Page 19 TYPES 3 AND 4, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 3 at maximum fan speed with water 85 – 70°C °C Air intake temperature 17,7 16,2 14,7 Thermal output 15.250 13.900 12.600 Kcal/h...
  • Page 20 TYPES 5 AND 6, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 5 at maximum fan speed with water 85 – 70°C Air intake temperature °C 22,0 20,1 18,2 Thermal output 18.950 17.300 15.650 Kcal/h...
  • Page 21 TYPES 7 AND 8, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 7 at maximum fan speed with water 85 – 70°C Air intake temperature °C 27,4 25,0 22,6 Thermal output 23.550 21.500 19.450 Kcal/h...
  • Page 22 TYPES 9 AND 10, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 9 at maximum fan speed with water 85 – 70°C Air intake temperature °C 31,9 29,1 26,3 Thermal output 27.400 25.000 22.650 Kcal/h...
  • Page 23 TYPES 11 AND 12, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 11 at maximum fan speed with water 85 – 70°C Air intake temperature °C 39,1 35,6 32,2 Thermal output 33.600 30.650 27.700 Kcal/h...
  • Page 24 TYPES 13 14 15, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 13 at maximum fan speed with water 85 – 70°C Air intake temperature °C 47,4 43,3 39,2 Thermal output 40.800 37.250 33.700 Kcal/h...
  • Page 25 TYPES 16 17 18, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 85-70°C Fan heater type 16 at maximum fan speed with water 85 – 70°C °C Air intake temperature 87,8 80,1 72,4 Thermal output 75.550 68.900 62.250 Kcal/h...
  • Page 26 TYPES 1 AND 2, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 1 at maximum fan speed with water 50 – 40°C °C Air intake temperature Thermal output 5.150 4.200 3.250 Kcal/h 1.750 Air flow rate DB(A)
  • Page 27 TYPES 3 AND 4, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 3 at maximum fan speed with water 50 – 40°C °C Air intake temperature Thermal output 6.800 5.550 4.150 Kcal/h 2.450 Air flow rate dB(A)
  • Page 28 TYPES 5 AND 6, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 5 at maximum fan speed with water 50 – 40°C °C Air intake temperature 10,0 Thermal output 8.600 7.000 5.400 Kcal/h 2.800 Air flow rate...
  • Page 29 TYPES 7 AND 8, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 7 at maximum fan speed with water 50 – 40°C °C Air intake temperature 12,4 10,1 Thermal output 10.650 8.650 6.650 Kcal/h 3.600...
  • Page 30 TYPES 9 AND 10, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 9 at maximum fan speed with water 50 – 40°C °C Air intake temperature 14,4 11,7 Thermal output 12.400 10.050 7.800 Kcal/h 3.950...
  • Page 31 TYPES 11 AND 12, ELECTRICAL POWER SUPPLY SINGLE-PHASE 230 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 11 at maximum fan speed with water 50 – 40°C °C Air intake temperature 17,5 14,2 10,4 Thermal output 15.050 12.200 8.950 Kcal/h...
  • Page 32 TYPES 13 14 15, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 13 at maximum fan speed with water 50 – 40°C °C Air intake temperature 21,3 17,2 12,9 Thermal output 18.300 14.800 11.100 Kcal/h...
  • Page 33 TYPES 16 17 18, ELECTRICAL POWER SUPPLY TRI-PHASE 400 V – 50 Hz, WATER TEMP. DROP 50-40°C Fan heater type 16 at maximum fan speed with water 50 – 40°C °C Air intake temperature 39,7 31,9 22,6 Thermal output 34.100 27.400 19.400 Kcal/h...
  • Page 34 The following accessories are available on request: Type Code 1 2 3 4 N N 7 8 9 10 11 12 13 14 15 16 17 18 Shelf pair 4AZM001 4-position speed selector 4AAR022 4 position speed selector 4AAR023 Panel with speed commutator 4AZQ001 Speed commutator 4AZC001...
  • Page 35 Example of installation in a small room Example of installation in a large room/area Example of vertical installation and ceiling installation Example of ceiling installation When mounting the heater on the ceiling it is recommended that you use the CEILING INSTALLATION KIT.

  • Page 36: Shelf Installation

    SHELF INSTALLATION The shelves can be mounted either above or beneath the unit depending on installation requirements. To assemble, proceed as follows: • drill holes in the walls as per the template; • attach the shelves to the walls using suitable fixing items (not supplied); •...
  • Page 37 Drilling template with shelves applied over heater unit. HEATER OUTLINE Type 1.139 1.339 The diameter of shelf plate fixing holes is 12 mm. WARNING! IT IS FORBIDDEN The support shelves are sized to support one To climb up on the shelves heater unit only.
  • Page 39 INSTALLING THE CEILING MOUNTING KIT To install the CEILING MOUNTING KIT proceed as follows: • Remove the hang up facilities (1); • Remove an half of the horizontal fins and mount it again in different direction, to direct the air flow in 2 different ways (2);...

  • Page 40: Water Circuit Diagram

    WATER CIRCUIT DIAGRAM OUTLET INLET WARNING! KEY: Install a drain valve at the lowest point in the Helical fan(s) water circuit to empty the system when Water-air exchanger necessary. Manual air bleed Spherical check valve (not supplied) INVERTING THE WATER CONNECTIONS To switch the water connections from one side to the other proceed as follows: •...

  • Page 41: Electrical Connections

    TO CONNECT UP TO THE WATER SUPPLY: • Remove the plastic plugs from the water connection fittings; • Connect up to the system as indicated in the diagram on page 39. To prevent damage to the unit, secure the heater water fittings by using the wrench / counter wrench method. To seal the threads, use hemp and green paste.
  • Page 42 Wire sizing table: Type Power supply Max absorbed Max absorbed Mains fuse Mains wires Earth wire power current cross- cross- section section (V ph Hz) 230V ∼ 50Hz 1 – 2 0,40 230V ∼ 50Hz 3 – 4 0,40 5 – 6 230V ∼...
  • Page 43 WIRING CONNECTION DIAGRAM TYPES 1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9 – 10 –11 –12 (Single-phase 230 V – 50 Hz power supply) MFAN 230V 50Hz MFAN - Fan connecting terminal 230V 50Hz - Single-phase 230V ∼...
  • Page 44 WIRING CONNECTION DIAGRAM TYPES 13 – 14 –15 – 16 – 17 – 18 ( TRIANGLE – MAX. SPEED) (Tri-phase 400 V – 50 Hz 3N power supply) FAN1 Wires colours: U1 V1 W1 V2 W2 Black = nero Brown = marrone Blue = blu Green = verde Yellow = giallo...
  • Page 45 WIRING CONNECTION DIAGRAM TYPES 15 – 16 – 17 – 18 ( STAR - MIN. SPEED) For version with 2 fans and derivation box (Tri-phase 400 V – 50 Hz 3N power supply) FAN1 FAN2 U1 V1 W1 V2 W2 U1 V1 W1 V2 W2 E E 1 1 2 2 3 3 4 4 5 5 6 6...
  • Page 46 WIRING CONNECTION DIAGRAM TYPES 15 – 16 – 17 – 18 ( TRIANGLE - MAX. SPEED) For version with 2 fans and derivation box (Tri-phase 400 V – 50 Hz 3N power supply) FAN1 FAN2 U1 V1 W1 V2 W2 U1 V1 W1 V2 W2 E E 1 1 2 2 3 3 4 4 5 5 6 6...
  • Page 47 WIRING CONNECTION DIAGRAM FOR ACCESSORIES For wiring connections of accessories, please read carefully the instructions of each accessory FILLING - EMPTYING THE UNIT FILLING: • start filling by slowly opening the water system Before you start filling: filling valve external to the heater unit; •...

  • Page 48: Preparing For Start-Up

    PREPARING FOR START-UP Before starting and testing the fan heater, check that: • water pressure (unit cold) is as required; • • any air has been bled from the system; the heater unit is positioned correctly; • • the fins are open. the check valves are open;...

  • Page 49: Switching Off For Long Periods

    CHECKS DURING AND AFTER FIRST-TIME START-UP Once the fan heater has been started, check that it shuts down on reaching the required temperature and With the fan heater running: • then restarts again when the room cools down (adjust check that the fan(s) rotates the right way; the room thermostat settings if necessary).
  • Page 50 CHECKING THERE IS NO AIR IN THE WATER CIRCUIT Loosen the manual bleed valves and check that there is no air. CHECKING VOLTAGE Using a voltmeter, check that the power supply is as indicated on the technical data plaque (tolerance ±10%).

  • Page 51: Troubleshooting

    TROUBLESHOOTING PROBLEM CAUSE SOLUTION No power Check unit is powered THE FAN DOES NOT START Main switch turned to OFF Turn to ON Room thermostat faulty Check room thermostat Fan faulty Check fan motor Condenser faulty Check condenser Overload cut-out tripped Check absorption Heat exchanger dirty Clean exchanger...
  • Page 52 Notes...
  • Page 53 Notes...
  • Page 54 Kroll GmbH- Pfarrgartenstrasse 46 D-71737 Kirchberg am Murr (D) Tel. +49 (0)7144 830 0 AWS - Fax +49 (0) 7144 830112 www.kroll.de Since the company is constantly engaged in making improvements to its products, the appearance, dimensions, technical data ,equipment and accessories may be subject to alterations.

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