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Installation/Use/Maintenance Instructions

Fan coil units VFC, installation in sills

E

LTG Incorporated · PO Box 2889 · Spartanburg, S.C. 29304, USA

VFC_USA_BA (07/19)

Phone 864 599-6340, Fax -6344 · e-mail: [email protected] · Internet: www.LTG-INC.net
Former editions are invalid · Subject to technical modifications

page 11 of 19

Continuation 4.1 Specifications, dimensions, technical data VFC-0

4.1.2 4-pipe system, for extremely low inlet temperatures (type VFC-0/4/…./E/….)

Specification

Fan coil unit with one heat exchanger and two separate
water cycles for heating and cooling the ambient air.
Water-side control by valves.
Particularly small built-in depth and height, therefore es

pecially appropriate for a room-saving installation in sills.
For extremely low inlet temperatures an insulated drain
tray is available for insertion on site.
Vertical installation.
Water connection on the right or left.

Dimensions

Size

A

[inch]

B

[inch]

C

[inch]

D

[inch]

E

[inch]

Weight *

[lb]

500

20.7

19.5

22.1

29.8

27.3

35

630

24.7

23.5

26.1

33.7

31.3

42

800

33.7

32.6

35.1

42.8

40.3

53

1000

41.6

40.4

43

50.7

48.2

64

1250

49.5

48.3

51

58.5

56.1

75

* approx. values, depending on exact model

Side view, right side

KW-RL
WW-RL

WW-VL
KW-VL

Movable tray

2.3

Air outlet, dimension B

Unit length, dimension A

18.

9

Drain tray length, dimension D, movable

Total length, dimension E

3.5

approx. 1

View

0.7

6.5

2.2

2.3

6.

5

16.

9

Basi

c

u

ni

t

le

n

g

th

10.

4

5.4

0.25

2.5

0.79

7.

9

7.

1

4.

1

10.

8

6.

5

1

0.

9

0.

9

View

Bracket on the
top/side/rear
according to
customer
specification

Front view

Isometric view

Illustration: with EC motor
and water connection on the right

If water connection is on the left:
heating with a distance to the unit
cooling directly on the unit

View onto the heat exchanger

Drive always on the right

Mounting options:
- Suspension from above (attachment to the sill)
- Wall mounting - rear suspension

Technical data

see standard unit VFC-0/4/…./T/….

KW-VL = cold water inlet
KW-RL = cold water return
WW-VL = warm water inlet
WW-RL = warm water return

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Содержание VFC Series

Страница 1: ...Installation Use Maintenance Instructions LTG Air Water Systems AIR TECH SYSTEMS Fan Coil Units VFC Installation in sills ...

Страница 2: ... Other requirements on request Content Page 1 Safety instructions 3 1 1 Explanation of symbols and hints 3 1 2 Operating safety instructions 3 2 Transport storage delivery 4 2 1 Transport instructions 4 2 2 Storage 4 2 3 Delivery 4 3 Function 5 3 1 Intended use 5 4 Technical specifications 6 4 1 Specifications dimensions technical data VFC 0 6 4 2 Specifications dimensions technical data VFC N 15 ...

Страница 3: ...d to the operating safety instructions ban ning a dangerous or risky action as shown here as an example Do not touch 1 2 Operating safety instructions Carefullyread thesafetyinstructions beforeusinganyLTG fan coil unit Always follow the safety instructions The units meet any pertinent safety standards The installation and maintenance of air conditioning units may be dangerous be cause of high pres...

Страница 4: ...med by an expert Take the unit entirely off the main power sup ply until all repairs have been completed by an expert even if this might result in not being able to operate undamaged units It is in any case imperative to take a damaged unit completely off the main power supply 2 Transport storage delivery The unit requires dry and dust free conditions during transport storage installation and oper...

Страница 5: ... in a way to ensure that no condensation occurs during stan dard operation For operation below dew point insulated units are available Output is water side controlled by valves The fan speed is controlled by a 0 10 V input signale to the EC motor with low energy consumption For group controls a total of 5 units may be connected in parallel With view to sizing themost important dataarethecaloric ou...

Страница 6: ...on Water connection on the right or left Dimensions weights Size A inch B inch C inch D inch E inch Weight lb 500 20 7 19 5 22 1 28 7 27 3 28 6 630 24 7 23 5 26 1 34 8 31 3 33 800 33 7 32 5 35 1 42 7 40 3 42 1000 41 6 40 4 43 52 6 48 2 51 1250 49 5 48 3 50 9 61 1 56 1 62 approx values depending on the exact model Air outlet 6 5 2 2 0 7 3 6 4 5 1 Total length dimension E Dimension A Dimension B Uni...

Страница 7: ...6 III 3 7 224 34 40 157 3 147 8 6 012 5 322 23 9 IV 4 3 271 38 44 180 1 174 4 6 905 6 278 25 11 V 5 3 341 45 51 199 0 199 0 7 738 7 165 31 17 1000 I 2 3 176 27 33 117 5 111 8 5 077 4 026 0 88 7 6 25 6 II 3 0 247 30 36 155 4 144 1 6 714 5 186 29 8 III 3 7 276 34 40 174 4 168 7 7 093 6 073 33 11 IV 4 3 335 38 44 197 1 193 3 7 806 6 960 36 16 V 5 3 424 46 52 216 1 216 1 8 400 7 779 42 26 1250 I 2 3 2...

Страница 8: ...ter connection on the right or left Dimensions Size A inch B inch C inch D inch E inch Weight lb 500 20 7 19 5 22 1 28 7 27 3 28 6 630 24 7 23 5 26 1 34 8 31 3 33 800 33 7 32 5 35 1 42 7 40 3 42 1000 41 6 40 4 43 52 6 48 2 51 1250 49 5 48 3 50 9 61 1 56 1 62 approx values depending on the exact model suspension from above special version standard bracket for rear wall installation separate accesso...

Страница 9: ...nstallation Water connection on the right or left Dimensions Size A inch B inch C inch D inch E inch Weight lb 500 20 7 19 5 22 1 28 7 27 3 28 6 630 24 7 23 5 26 1 34 8 31 3 33 800 33 7 32 5 35 1 42 7 40 3 42 1000 41 6 40 4 43 0 52 6 48 2 51 1250 49 5 48 3 50 9 61 1 58 1 62 approx values depending on exact model Lateral view right side KW RL WW RL WW VL KW VL Drain tray movable 2 3 Air outlet dime...

Страница 10: ...71 38 44 155 4 153 5 6 080 5 527 89 1 89 1 25 11 V 5 3 341 45 51 174 4 172 5 6 704 6 209 96 7 96 7 31 17 I 2 3 176 27 33 109 9 100 5 4 340 3 617 68 2 62 5 0 88 6 0 0 44 1 1 25 6 II 3 0 247 30 36 144 1 134 6 5 814 4 845 89 1 83 4 29 8 1000 III 3 7 276 34 40 161 1 155 4 6 322 5 595 102 4 96 7 33 11 IV 4 3 335 38 44 180 1 174 4 6 905 6 278 111 8 108 0 36 16 V 5 3 424 46 52 202 8 199 0 7 738 7 165 123...

Страница 11: ...s Size A inch B inch C inch D inch E inch Weight lb 500 20 7 19 5 22 1 29 8 27 3 35 630 24 7 23 5 26 1 33 7 31 3 42 800 33 7 32 6 35 1 42 8 40 3 53 1000 41 6 40 4 43 50 7 48 2 64 1250 49 5 48 3 51 58 5 56 1 75 approx values depending on exact model Side view right side KW RL WW RL WW VL KW VL Movable tray 2 3 Air outlet dimension B Unit length dimension A 18 9 Drain tray length dimension D movable...

Страница 12: ... 42 800 33 7 32 5 35 1 42 7 46 9 41 3 53 1000 41 6 40 4 43 52 5 54 7 49 2 64 1250 49 5 48 3 51 60 4 62 6 57 0 77 approx values depending on exact model Front view KW RL WW RL WW VL KW VL Air outlet Suspension from above special version Standard bracket for rear wall installation separate accessory 6 5 6 5 61 angle of discharge 2 2 5 1 3 6 17 8 3 2 0 79 16 9 4 1 3 1 0 79 7 1 2 1 4 3 0 63 1 4 Latera...

Страница 13: ... pecially appropriate fora room savinginstallation in sills Vertical installation Water connection on the right or left Primary air socket laterally left or bottom left the latter only with water connection on the right Dimensions weights Size A inch B inch E inch Weight lb 500 20 7 19 5 36 5 31 630 24 7 23 5 40 4 35 800 33 7 32 5 49 5 44 1000 41 6 40 4 57 4 53 1250 49 5 48 7 65 3 64 approx values...

Страница 14: ...sion from above to hook in the sill Wall installation mounting on rear side Dimensions weights caloric data Size A inch B inch C inch Weight lb Voltage LA18 dB A LWA dB A Pel W 500 26 6 19 5 29 8 33 2 3 23 29 5 3 0 29 35 6 3 7 35 41 9 4 3 41 46 11 5 5 45 51 17 630 31 8 24 7 33 7 39 as size 500 800 38 4 31 4 42 8 51 as size 500 1000 46 3 39 50 6 62 2 3 24 30 6 3 0 29 35 8 3 7 35 41 11 4 3 41 47 16 ...

Страница 15: ... Size A EC B C D E Weight inch lb 500 25 5 19 6 23 1 21 0 22 0 33 630 30 6 24 7 28 8 26 1 27 2 40 800 37 3 31 4 34 9 32 8 33 9 51 1000 45 2 39 3 42 8 40 7 41 7 62 1250 55 0 49 1 52 6 50 5 51 6 73 approx values depending on execution Draught relief View 3 pin plug resp 4 pin plug Ø 1 3 0 8 2 2 2 2 Venting KW RL G 1 2 WW VL G 1 2 WW RL G 1 2 KW VL G 1 2 1 5 7 2 0 8 7 1 4 2 3 25 4 2 6 3 1 Tray movabl...

Страница 16: ...pending on execution Venting KW RL G 1 2 WW VL G 1 2 WW RL G 1 2 KW VL G 1 2 Lateral view right side Lateral view left side Front view Top view Proper water connection view in direction of air arrow Illustrated unit water connection only on the right drive always on the left KW VL cooling water inlet KW RL cooling water return WW VL heating water inlet WW RL heating water return Tray Ø 1 3 6x Plai...

Страница 17: ... 153 32 104 2 94 8 75 8 70 1 20 6 III 171 34 117 5 108 0 81 5 77 7 23 9 IV 200 38 127 0 121 3 87 2 83 4 25 11 V 224 43 140 3 132 7 94 8 89 1 31 17 1 Values apply to the unit with air outlet grille without filter 2 Values apply to the unit with air outlet grille with filter Values may vary when units are installed n speed V flow rate 10 LwA mF sound power level 3 dB A without casing with filter Qc ...

Страница 18: ... technical data VFC F 4 3 1 Special version type VFC F upright unit with solid floor Specification With base for attachment to the ground Dimensions weights Size A B Weight inch lb 630 31 23 5 42 800 40 32 5 51 1000 47 9 40 4 59 1250 55 7 48 3 70 Unit length dimension A Air outlet dimension B 21 8 2 1 1 Isometric view 6 5 1 5 1 2 0 23 2 4 4 2 22 24 8 7 1 6 8 Lateral view right side Front view 0 16...

Страница 19: ...s series HF and fan coil units series VF Consisting of a supporting structure of channel sections rear cover panel angle panel side mullions and air outlet grille LDC aluminum All exposed surfaces are high quality powder coated similar to RAL thickness of layer 60 μm All VF units are fixed to the casing using brackets Dimensions see table Special lengths on request Dimensions weights Size A B Weig...

Страница 20: ...t to technical modifications page 20 of 19 4 4 Capacity charts VFC 0 Capacity for different flow rates 2 pipe system Water flow rate w gpm 0 22 0 44 0 66 0 88 1 1 1 3 40 60 80 100 120 I II III Speed IV V Capacity in of the nom capacity Q Water side pressure loss for different flow rates 2 pipe system Water flow rate w gpm 0 33 1 0 3 0 10 0 22 0 31 0 44 0 89 0 62 1 23 Water side pressure loss Δp w ...

Страница 21: ...page 21 of 19 Continuation 4 4 Capacity charts VFC 0 Cooling capacity for different water flow rates 4 pipe system Water flow rate w gpm 0 22 0 44 0 66 0 88 1 1 1 3 40 60 80 100 120 I II III Speed IV V Cooling capacity in of the nom capacity Q k Water side pressure loss of the cooler for different water flow rates 4 pipe system Water flow rate w gpm 0 33 1 0 3 0 10 0 22 0 31 0 44 0 88 0 62 1 23 Wa...

Страница 22: ...e 22 of 19 Continuation 4 4 Capacity charts VFC 0 Heating capacity for different water flow rates 4 pipe system Water flow rate w gpm 0 22 0 35 0 53 0 7 0 88 40 60 80 100 120 140 I II III Speed IV V Heating capacity in of the nom capacity Q h Water side pressure loss of the heater for different water flow rates 4 pipe system Water flow rate w gpm 1 0 2 0 3 0 5 0 10 20 0 22 0 31 0 44 0 88 0 62 1 23...

Страница 23: ... Subject to technical modifications page 23 of 19 4 5 Capacity charts VFC N Cooling capacity for different water flow rates 4 pipe system Water flow rate w gpm 0 22 0 44 0 66 0 88 1 1 1 3 40 60 80 100 120 Cooling capacity in of the nominal capacity Q k I II III speed IV V Water side pressure loss of the cooler for different water flow rates 4 pipe system Water flow rate w gpm 0 33 1 0 3 0 10 0 22 ...

Страница 24: ...o technical modifications page 24 of 19 Continuation 4 5 Capacity charts VFC N Heating capacity for different water flow rates 4 pipe system Water flow rate w gpm 0 22 0 35 0 53 0 7 0 88 40 60 80 100 120 140 I II Heating capacity in of the nominal capacity Q h III speed IV V Water side pressure loss of the heater for different water flow rates 4 pipe system Water flow rate w gpm 1 0 2 0 3 0 5 0 10...

Страница 25: ...re invalid Subject to technical modifications page 25 of 19 Continuation 4 4 Capacity charts VFC N Capacity for different water flow rates 2 pipe system Waterflowratew gpm 0 22 0 44 0 66 0 88 1 1 1 32 40 60 80 100 120 I II III speed IV V Capacity in of the nominal capacity Q Water side pressure loss for different water flow rates 2 pipe system Water flow rate w gpm 0 33 1 0 3 0 10 0 22 0 31 0 44 0...

Страница 26: ... a graphic illustration of how outputs change with other flow rates compared to nomi nal flow rate output Flow rates have been determined through calculation and may vary by about 10 Addition of ethylene glycol to lower the freezing point To lower the freezing point cooling water is often added some ethylene glycol The lower specific ther mal capacity of the mixture reduces the unit s cool ing cap...

Страница 27: ...performed accord ing to the wiring diagram and by a licensed electrician Electricallines on sitemustberealizedusingtheopenings on the terminal box and on the unit housing Always disconnect power before working in the unit Units must be provided with a possibil ity to completely disconnected them from the main power supply Any work must be performed in compli ance with national regulations codes an...

Страница 28: ... wiring diagram for EC motor 0 10 V Two connections are necessaryfor electricallyconnecting thefan convector Theseareprovided byplugconnections protection IP 21 Theplugs arepreassembledon themotor side at the factory Only the supplied mating plugs have to be assembled by others accordingly Note As a rule we are not familiar with the full scope of the ventilation air conditioning and control engine...

Страница 29: ...when mounting the unit Hardware required for installation are not included Use only the existing holes on the unit for the mounting elements Use only the hardware described on the following pages for installing the unit to ensure sufficient stability Al ways observe the installation instructions Do not use the air conditioning units as supporting ele ments for other components and avoid loading th...

Страница 30: ...not be adjusted There fore always state the clearance W between the unit and the wall in your order For stability reasons this clearance must not exceed 7 9 when using the standard version but for greater clearances a reinforced version is available If the unit is not supported from below use a spacer in ad dition to the wall bracket for safety reasons consisting of clamping pieces or clamping bra...

Страница 31: ...n the second slot of the bracket 1 inch in height in the slot of the supporting plate In general the supporting plate is not attached to the unit but must be ordered together with the lateral bracket When ordering state the wall clearance W If the unit is not supported from below use a spacer in ad dition to the wall bracket for safety reasons consisting of clamping pieces version I or clamping br...

Страница 32: ...t Please always state the unit type and dimension H when ordering The unit is adjustable in height upwards by approx 0 2 and downwards to H However it should be considered that the floor stand may exceed the unit height The unit may also be adjusted to the rear in theslots of the stand by approx 0 4 The unit may furthermore be adjusted laterally by approx 2 0 provided that the center to center dis...

Страница 33: ...In orderto adjust thewaterflow ratespecified in theselec tion data a regulating device or restricting olive will be re quired A regulating device for each individual unit can be provided only when the units are identical with the same water flow quantities and the same pressure loses in the case of the Tichelmann system reverse return principle In this case one regulating device for the entire lin...

Страница 34: ... be specified when ordering the unit Some units offer a possibility to still change the side during installation if required by removing 4 bolts The heat exchanger needs to be connected as follows vertical heat exchangers water supply below water return above horizontal heat exchangers water supply at unit s front side water return at unit s back side Water connections 1 4 7 1 3 1 4 1 0 5 0 5 0 79...

Страница 35: ...G heat exchanger with smooth tube Connection types SK SK Eh Different hose connections thread diameter acc to customer requirements or standard min 6 0 min 1 4 min 1 4 min R 2 0 ca 4 0 ca 8 0 min 6 0 min 1 4 min 1 4 min R 2 0 ca 4 0 ca 8 0 Ø 0 67 ND 0 5 Ø 0 67 ND 0 5 Quick coupling connection to heat exchangers Example for water connection using transition LTG description VSG 10 2 EH venting strai...

Страница 36: ... connection to angle or straight way valve Connection type AGK external thread tapered Different hose connections thread diameter acc to customer requirements or standard Connection for direct screwing into the heat exchanger in case of angle connection Connection type double nipple 1 2 UFD hose connection flat seal union nut min 6 0 min 1 4 min R 2 0 Ø 0 67 ND 0 4 Example for water connection for...

Страница 37: ...ing transport nor during installation or when installed If it should turn out impossibleto keep theadmissible bending radius choose a different installation type For minimum length see chart below If the hose is being placed by bending it check whether there is sufficient hoselength to allow foran open bow in order to avoid kinking and destruction of the hose at the connecting points Absolutely av...

Страница 38: ... 2 1 Instructions for installation of water connections using flexible hoses Flexible hoses Type EPDM Oxygen diffusion tight Free of halogens plasticisers and heavy metals Tested acc to DIN 4726 Braiding Stainless steel wire acc to AISI 304 Ferrule Stainless steel acc to AISI 304 Temperature range 4 212 F up to 176 F Max operating pressure 217 5 psi 145 psi Internal Ø 0 5 in 0 5 in Bend radius DN ...

Страница 39: ...cs in Drinking Water recommendations TheCuprofit plug in connection has been evaluated based on DVGW German Association of the Gas and Water In dustries Worksheet W534 in connection with the use of Wieland copper tubing This permanently tight connection is suitable for concealed installation Using the special quick connect tool this connection may be detached up to three times when not under press...

Страница 40: ...solutions Case A Condensate tray not connected condensate socket closed by plug If outside air humidity is high keep windows closed Alternative If windows are opened use a window contact with closing time delayed opening system Alternative A central system controls the water supply tempera ture based on the outside air humidity whenever win dows are opened i e in case of a high humidity of the air...

Страница 41: ...media supply Check for proper availability of primary air cold water warm water and electrical power or compressed air for the controls Check whether voltage and line frequency comply with thedata given on theactuator s typeplate Neveroperate control devices with inappropriate voltage or frequency since this might result in destruction of theunits and put people at risk Control technical equipment...

Страница 42: ...t filter The exchanger s is are to be vacuum cleaned about 2 3 months after initial operation By that time heat exchang ers are usually visibly polluted from carpet lints and con struction dust remainders Exact timing is subject to local conditions Heat exchanges will then have to be vacuum cleaned on a regular basis every 6 months to max 2 years depending on dust formation This gains particular i...

Страница 43: ... or replace Unit is heating or cooling but set temperature is not achieved Window is open Close window Despite highest fan speed only weak air movement at the fan diffuser Filter or heat exchanger polluted Suction or diffuser opening blocked or polluted Replace filter Clean heat exchanger Remove objects in front of the diffuser and protective grille Observe a minimum distance of 10 cm in front of ...

Страница 44: ...corrosion correct positioning and fixation 12 Filter Check for pollution damage and odours 3 Check the filter layer for tightness 3 Replace filter medium document 12 x Check for hygienic condition 3 Heat exchanger Check for pollution damage and corrosion 6 Clean to maintain function 6 x Check water connections 12 Check proper function of supply and return 12 Vent x Check for hygienic condition 6 D...

Страница 45: ...ze 1000 for VFC 1 1 2 pipe heat exchanger size 1250 for VFC 1 1 530065 Condensate tray size 630 for VFC 10 1 530073 Condensate tray size 800 for VFC 10 1 531170 Condensate tray size 1000 for VFC 10 1 1003369 Condensate tray size 1250 for VFC 10 1 1008313 Terminal box electrical connection 1 1 Fan size 500 with EC motor 1 1 Fan size 630 with EC motor 1 1 Fan size 800 with EC motor 1 1 Fan size 1000...

Страница 46: ...40 Fax 1 864 599 6344 E Mail info LTG INC net www LTG INC net VFC USA BA 07 19 AG B 202 1us LTG Aktiengesellschaft Former editions are invalid Subject to technical modifications Comfort Air Technology Air Water Systems Air Diffusers Air Distribution Process Air Technology Fans Filtration technology Humidification Technology Engineering Services Laboratory Test Experiment Field Measurement Optimisa...

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