LTG VFC Series Instruction/Use/Maintenance Instructions
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LTG VFC Series Instruction/Use/Maintenance Instructions

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Installation/Use/Maintenance Instructions
LTG Air-Water Systems
Fan Coil Units VFC
Installation in sills
AIR TECH
SYSTEMS

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Summary of Contents for LTG VFC Series

  • Page 1 AIR TECH SYSTEMS Installation/Use/Maintenance Instructions LTG Air-Water Systems Fan Coil Units VFC Installation in sills...

  • Page 2: Table Of Contents

    8. Spare parts 9. Decommissioning, disposal E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 3: Safety Instructions

    Wear gloves during work and handling. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 4: Transport, Storage, Delivery

    It is in any case imperative to take a damaged unit completely off the main power supply! E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 5: Function

    E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 6: Technical Specifications

    - suspension from above (attachment to the sill) KW-RL = cold water return - wall mounting - rear suspension E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 7 (with filter) Speed control wiring diagram see page 28. sens E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 8 KW-RL = cold water return - wall mounting (rear suspension) Technical data see standard version VFC-0/2/…./T/…. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 9 WW-VL = warm water inlet - Wall mounting - rear suspension WW-RL = warm water return E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 10 (with filter) mF - sens E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 11 - Wall mounting - rear suspension WW-RL = warm water return Technical data see standard unit VFC-0/4/…./T/…. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 12 Specification Dimensions, weights Fan coil unit special version with additional fresh air sup­ Size Weight ply. Via an adjustable LTG diffuser LDB, the air is blown out [inch] [lb] * in parallel to the tangential fan outlet. Optimum primary 20.7 19.5...
  • Page 13 = 10 * log (10 wA P + 10 E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 14 Illustrated unit: water connection optional on the right or left, drive always on the right E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 15: Specifications, Dimensions, Technical Data

    KW-VL (G 1/2") Illustration: type VFC-N/4/…./T/../EC, 4-pipe system, with EC motor E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 16 KW-VL (G 1/2") Illustration: type VFC-N/4/…./T/../AC5, 4-pipe system, with AC motor E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 17 (correction for other water flow rates see from page 25) - electric power consumption (± 20 %) E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 18: Specifications, Dimensions, Technical Data

    Technical data See standard units VFC-0/4/…./T (section 4.1.2) and VFC-0/2/…./T (section 4.1.1). E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 19 Dimension B Total length, dimension A 1.Dient zur Identifizierung der letzten Seite E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 20: Capacity Charts Vfc-0

    0.89 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 21 0.88 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 22 0.88 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 23: Capacity Charts Vfc-N

    0.88 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 24 0.88 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 25 0.89 1.23 Water flow rate w [gpm] E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 26: Caloric Output Data

    The lower specific ther- mal capacity of the mixture reduces the unit's cool- ing capacity. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 27: Electrical Data

    It is not permitted to operate the units in a partly disassembled condition. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 28 0…10 V output (optional) N, L operating voltage 115 V-AC E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 29: Installation

    Select the hardware in a way to ensure that sound transmission is avoided. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 30 34.3 about 2 1250 43.7 E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications page 30 of 19...
  • Page 31 Lateral wall bracket with BCH support plate and lateral wall brackets, to be ordered separately. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 32 43.9 Please state height H when ordering ! Ø 0.41 E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 33: Water Connections

    In this case, one regulating device for the entire line may be sufficient. Otherwise, a regulating device will be re­ quired for each heat exchanger. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 34 4-pipe heat exchanger connection ½ “ internal thread connection ½ “ internal thread E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 35 SK + Eh  Different hose connections thread diameter acc. to customer requirements or standard ½ ” Example for water connection using transition - LTG description VSG 10/ 2 EH (venting) -, straight- way valve and flexible hose min. R 2.0 min.
  • Page 36 Connection type: AGK, external thread, tapered ½ ”  Different hose connections, thread diameter acc. to customer requirements or standard ½ ” E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 37 E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...
  • Page 38 0.5 1.57 10.6 16.5 E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...
  • Page 39 Maximum operating pressure 145 psi / 200 °F Test pressure 232 psi / 86 °F E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 40: Condensate Connection

    This will, however, reduce the cooling capacity. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 41: Check After Installation

    Control valves are often factory-mounted. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 42: Operation, Maintenance, Repair

    Warranty applies to complete fans only. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 43: Trouble Shooting, Corrective Action

    Heat exchanger and filter polluted Check water volume balancing Water volume possibly too high E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid · Subject to technical modifications...

  • Page 44: Maintenance Intervals Of The Individual

    * Shorten replacement intervals if outside or recirculating air are extremely dust loaded. Sanitation requirements must be observed. E LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA VFC_USA_BA (07/19) Phone 864 599-6340, Fax -6344 · e-mail: info@LTG-INC.net · Internet: www.LTG-INC.net Former editions are invalid ·...

  • Page 45: Spare Parts

    Installation/Use/Maintenance Instructions Fan coil units VFC, installation in sills Spare parts The following spare parts are available and may be ordered from LTG Aktiengesellschaft stating unit type and description. Minimum Quantity Ident No. Description order quantity 4-pipe heat exchanger size 500 for VFC 4-pipe heat exchanger size 630 for für VFC...

  • Page 46: Vfc_Usa_Ba

    Germany Tel.: +49 (711) 8201-0 Tel..: +1 (864) 599-6340 Fax: +49 (711) 8201-720 Fax: +1 (864) 599-6344 E-Mail: info@LTG.net E-Mail: info@LTG-INC.net www.LTG.net www.LTG-INC.net VFC-USA-BA (07/19) AG-B 202.1us © LTG Aktiengesellschaft • Former editions are invalid • Subject to technical modifications...

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