LTG VFC Parts list manual

The Innovation Company
LTG Aktiengesellschaft
Instructions for Installation, Use
and Maintenance
Fan Coil Unit VFC
Example:
Fan coil unit for sill installation
LTG Aktiengesellschaft
D - 70435 Stuttgart, Grenzstraße 7
D -- 70405 Stuttgart, Postfach 40 05 25
[phone] Fax [phone]
Internet: http://www.LTG-AG.de
E-Mail: [e-mail]
AG--B 201.1e (Feb. 10)

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
3
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Table of contents
EC Declaration of Conformity 5
Safety Instructions 7
1 Transport and Storage 9
1.1 Transport Instructions 9
1.2 Storage 9
2 Function 10
2.1 Intended use 10
3 Technical Specifications 11
3.1 Specifications, Dimensions 11
3.2 Caloric Output Data 28
3.3 Acoustic Data 28
3.4 Hydraulic Data 28
3.5 Weight 29
3.6 Electrical Data 29
4 Installation 31
4.1 Installation / Suspension 31
4.2 Water Connections 34
4.3 Condensate Connection 40
4.4 Check after Installation 41
5FirstUse 42
6 Operation, Maintenance and Repair 43
6.1 Heat Exchanger, Water Connections and Condensate Tray 43
6.2 Filter 43
6.3 Fan 43
6.4 Repair 44
6.5 Trouble Shooting and Corrective Action 45
6.6 Maintenance Intervals of the Individual Components 47
7 Spare Parts 48
8 Decommissioning and Disposal 48

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
5
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
EC Declaration of Conformity

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
7
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Carefully read the safety instructions before using any LTG fan coil unit.
Always follow the safety instructions!
Safety Instructions
The units meet any pertinent safety standards.
The installation and maintenance of air conditioning units may be dangerous because of high
pressures andelectrical components being alive. Therefore, the installation, maintenance, andre-
pair must be performed by qualified and trained staff only.
In particular electrical connections are to be provided, removed, or modified by authorized per-
sons only observing all relevant safety instructions.
Safety instructions in the technical documentation and on unit labels must be followed at all times.
Do not open the unit for cleaning, maintenance, or repair and do not remove covers and casings
(air diffuser) unless all conducting lines have been completely disconnected. Do not connect or
remove the plug--in connector when under tension.
Any work regarding the electrical equipment is to be performed by skilled and trained staff only.
Connections to the main power supply and the safety earth terminal must be executed exactly as
described in the wiring diagram.
Electrical operation of the unit in a partly disassembled condition or of individual components
is not permitted since earth terminals might be interrupted.
The standard version of the heat exchangers is designed for an operating pressure of 10 bar (test
pressure 16 bar). High water pressures may be hazardous. Higher operating pressures,therefore,
require LTG’s express permission. Wear safety glasses.
During continuous operation the motor may reach temperatures of up to 65 _C. If necessary, al-
low the motor to cool off or wear gloves.
Be careful when performing work on the heat exchangers. Blades and housing parts are sharp--
edged. Wear gloves during work and handling.
Be careful when working overhead and provide protection against parts falling from above.
Never remove the protective grille of the fan impeller and the motor cover during operation.
Keep objects and dirtfrom entering the impeller. A damaged fan impeller or objects being ejected
by the impeller may be hazardous.
The casing on site also serves as a protection and should be removed for maintenance and clea-
ning only.
Avoid any additional load to the unit or the suspensions since stability might be insufficient.
In the heating mode a temperature of up to 80 _C may be achieved. Water--carrying parts may
be hot so do not touch with your bare hands to avoid burns.
The unit must be checked by an expert immediately
- if it has been mechanically damaged or is suffering from a water damage,
- if the fan shows signs of damages (imbalance, damage to the bearing or motor),
- if the suspension or the casing show clear signs of corrosion or ageing.
Do not put the unit back into operation before all necessary maintenance and repair has been per-
formed!
Take the unit entirely off the main power supply until all repairs have been completed 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!

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
9
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
1. Transport and Storage
The unit requires dry and dust--free conditions during transport, storage, installation, and operation.
The unit is supplied in corrugated board boxes secured with straps.
Units are stacked on Euro or single trip pallets and secured with straps. Pallets may be moved using forklifts
or cranes.
Do not remove the packaging unless immediately prior to installation on site to protect the unit from pollution
and damages.
LTG Aktiengesellschaft will not take responsibility for any pollution of or
damages to the unit.
1.1 Transport Instructions
Handle units appropriately and with care during transport.
Do not throw, let drop to the ground or bump into other items or walls.
Make sure that units are safely fastened during transport and avoid damage through other items.
It is recommended to always have units handled by at least two persons.
The packaging is not weather--resistant.
1.2 Storage
Make sure that units are entirely protected against weathering, humidity, and other adverse conditions that
might result in damages during storage.
The storage location must meet the following climatic requirements:
Temperature between +5 _C and +55 _C with a relative humidity of 90 % max. (non--condensing).

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
10
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
2. Function
The fan coil unit is a recirculating air unit for cooling or heating (2--pipe) or for cooling and heating (4--pipe)
the air.
These fan coil units have been designed for installation in sills and ceilings in office and conference rooms,
hotel rooms, hospitals and other closed rooms for indoor air treatment.
The fan sucks in ambient air via a heat exchanger, heating or cooling the air and reintroducing it into the room.
Uniform distribution of the air across the entire fan is ensured by a cross--flow impeller extending over the
entire width. The heat exchanger is usually equipped with a filter for protection.
Thermal energy transport to the heat exchanger is performed by water; water connection on the right or left.
If the cold water temperature drops in the cooling mode below dew point the condensate will be collected by
a condensate tray with possible connecting socket. For reasons of hygiene, the unit should be dimensioned
in a way to ensure that no condensation occurs during standard operation. For operation belowdew point insu-
lated units are available.
Output is water--side controlled by valves.
The fan speed is controlled by a five--speed capacitor motor with low energy consumption, with individual
switch activation.
For group activation a total of 5 units may be connected in parallel.
Take care to connect in parallel identical speeds only, i.e. connect speed I of unit 1 to speed I of unit 2, etc.
With view to dimensioning, the most important data are the caloric output, the sound power level and the air
flow rate.
The units’ caloric output is determined through the fan speed, the water flow rate, and the valve setting which
may be controlled by a regulating device.
The units’ sound power and the air flow rate are determined through the fan speed.
The use of a filter results, at the same speed level, in a reduction of both the caloric output and the air flow
rate while the sound power level of the units is higher when increasing the fan speed.
2.1 Intended Use
The LTG fan coil unit type VFCG is intended for use in closed rooms.
It is designed for ambient temperatures of +5 _Cto+40_C and a maximum relative humidity of up to 90%
(non--condensing).
In order to ensure safe motor functioning the ambient temperature when installed should not exceed +40 _C.
The maximum admissible supply temperature is, therefore, limited to +80 _C.
Any other operating conditions require the express and written permission of LTG Aktiengesellschaft.
LTG Aktiengesellschaft does not assume responsibility for any damages resulting from unintended use.

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
11
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
3. Technical Specifications
3.1 Specifications, Dimensions
Ceiling Unit, 2-pipe System
Specification
Fan coil unit with one heat exchanger for heating or
cooling the ambient air. Water-side control by valves.
Particularly low “built-in” depth and height, therefore
especially appropriate for a room-saving installation in
ceilings. For extremely low inlet temperatures an in-
sulated drain tray is available for insertion on site.
Horizontal installation (in the ceiling). Water con-
nection on the right or left.
Dimensions
Size A B C D E
500 784 527 725 543 538
630 884 627 870 643 638
800 1114 857 1030 873 868
1000 1314 1057 1230 1073 1068
1250 1514 1257 1470 1273 1268
RL VL
431
30
30
20
483
48
40
216
73
58 56
22
15
465
35
205
40
12 mm Cu tube with
rapid action coupling
View
Mounting suspen-
sion with threaded
rodØ6mm
View
469 incl. insulation
Condensate drainage
total height 178
VL = water inlet
RL = water return
drain tray, dimension C
unit width, dimension A
cross--flow fan width, dimension B
unit suspension fan--side, dimension D
unit suspension heat exchanger--side, dimension E
Top vi e w
Hint for Installation:
For horizontal installation, the cooler
must be angled by 10_in order to al-
low the condensate drainage and to
avoid condensate between the blades of
the heat exchanger.
This special arrangement will only be
required if a constant condensate for-
mation is to be expected, i.e. if the tem-
perature of the cold water supply will
constantly remain more than 2 K below
the dew point of the ambient air.
Water connection:
View: direction of air (arrow)
Unit as illustrated:
Water connection on the left
(or on the right, as required)
Motor always on the left
If water connection on the right,
unit width (dim. A) is extended by 80 mm
Connection heat exchanger:
shown 12 mm Cu--tube,
other dimensions with connection
1/2” internal thread.
Please note:
Position and size of the inspection openings
must meet constructional requirements
air outlet
width

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
12
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Technical Specifications, Ceiling Unit, 2-pipe System (legend see page 20)
Size 500
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I160 24 30 37 36 864 720
200/18
12
II 240 29 35 49 48 1152 960 15
III 290 35 41 57 56 1265 1120 18
IV 340 38 44 64 64 1408 1280 20
V430 45 51 73 73 1576 1460 27
Size 630
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I170 23 29 48 43 1032 860
200/20
12
II 260 27 33 59 59 1416 1180 15
III 310 34 40 68 68 1536 1360 18
IV 370 38 44 76 76 1672 1520 20
V480 45 51 87 87 1879 1740 27
Size 800
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I220 23 29 52 48 1152 960
200/22
12
II 320 26 32 72 64 1536 1280 15
III 380 32 38 83 78 1762 1560 18
IV 460 36 42 95 92 2024 1840 20
V580 43 49 105 105 2268 2100 28
Size 1000
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I300 25 31 62 59 1488 1180
200/23
22
II 420 28 34 82 76 1968 1520 26
III 470 33 39 92 89 2079 1780 28
IV 570 37 43 104 102 2288 2040 32
V720 45 51 114 114 2462 2280 39
Size 1250
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I360 25 31 80 73 1752 1460
200/25
22
II 470 28 34 98 92 2208 1840 26
III 570 33 39 107 104 2350 2080 28
IV 690 37 43 116 113 2486 2260 32
V830 44 50 128 124 2678 2480 39
1) Specific cooling capacity (noncondensing operation)
2) Cooling capacity with the following parameters: water inlet: 6_C,
induction air temperature before entering the heat exchanger: 26_C, 50% rel. humidity

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
13
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Ceiling Unit, 4-pipe System
Specification
Fan coil unit with one heat exchanger and 2 separate
cycles for heating and cooling the ambient air.
Water-side control by valves. Particularly low “built-
in” depth and height, therefore especially appropriate
for a room-saving installation in ceilings.
For extremely low inlet temperatures an insulated
drain tray is available for insertion on site. Horizon-
tal installation (in the ceiling).
Water connection on the right or left.
Dimensions
Size A B C D E
500 784 527 725 543 538
630 884 627 870 643 638
800 1114 857 1030 873 868
1000 1314 1057 1230 1073 1068
1250 1514 1257 1470 1273 1268
View
431
30
30
469 incl. insulation
20
483
48
73 20
19
62
126
29
58 56
22
15
KKW--VLKKW--RL HZG--VLHZG--RL
drain tray, dimension C
465
35205
40
unit width, dimension A
Mounting suspen-
sion with threaded
rodØ6mm
12 mm Cu tube
with rapid action coupling
View
Condensate drainage
Top vi e w
cross--flow fan width, dimension B
KKW--VL = cooling -- water inlet
KKW--RL = cooling -- water return
HZG--VL = heating -- water inlet
HZG--RL = heating -- water return
total height 178
unit suspension fan--side, dimension D
unit suspension heat exchanger--side, dimension E
Hint for Installation
For horizontal installation, the cooler must be
angled by 10_in order to allow the condensate
drainage and to avoid condensate between the
blades of the heat exchanger.
This special arrangement will only be required
if a constant condensate formation is to be ex-
pected, i.e. if the temperature of the cold water
supply will constantly remain more than 2 K
below the dew point of the ambient air.
Water connection:
View: direction of air (arrow)
Unit as illustrated:
Water connection on the left
(or on the right, as required)
Motor always on the left
If water connection on the right,
unit width (dim. A) is extended by 80 mm
Connection heat exchanger:
shown 12 mm Cu--tube,
other dimensions with connection
1/2” internal thread.
Please note:
Position and size of the inspection openings
must meet constructional requirements
air outlet
width

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
14
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Technical Specifications, Ceiling Unit, 4-pipe System (legend see page 20)
Size 500
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I160 24 30 34 28 672 560 21 19
200 / 13 100 / 2.5
12
II 240 29 35 46 45 1080 900 28 28 15
III 290 35 41 54 54 1220 1080 32 32 18
IV 340 38 44 60 60 1320 1200 35 35 20
V430 45 51 68 68 1468 1360 40 40 27
Size 630
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I170 23 29 41 36 864 720 26 23
200 / 14 100 / 2.7
12
II 260 27 33 52 51 1224 1020 32 31 15
III 310 34 40 60 60 1356 1200 35 35 18
IV 370 38 44 67 67 1474 1340 39 39 20
V480 45 51 76 76 1641 1520 43 43 27
Size 800
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I220 23 29 47 42 1008 840 29 26
200 / 16 100 / 3.1
12
II 320 26 32 64 60 1440 1200 38 36 15
III 380 32 38 74 71 1604 1420 42 41 18
IV 460 36 42 82 81 1782 1620 47 47 20
V580 43 49 92 91 1965 1820 51 51 28
Size 1000
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I300 25 31 58 53 1272 1060 36 33
200 / 18 100 / 3.4
22
II 420 28 34 76 71 1704 1420 47 44 26
III 470 33 39 85 82 1853 1640 54 51 28
IV 570 37 43 95 92 2024 1840 59 57 32
V720 45 51 107 105 2268 2100 65 65 39
Size 1250
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I360 25 31 74 68 1632 1360 46 43
200 / 20 100 / 3.6
22
II 470 28 34 90 85 2040 1700 54 51 26
III 570 33 39 98 96 2196 1920 61 58 28
IV 690 37 43 106 104 2288 2080 63 61 32
V830 44 50 118 116 2505 2320 69 67 39
1) Specific cooling capacity (noncondensing operation)
2) Cooling capacity with the following parameters: water inlet: 6_C,
induction air temperature before entering the heat exchanger: 26_C, 50% rel. humidity

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
15
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Unit for Sill Installation, 2-pipe System
Specification
Fan coil unit with one heat exchanger for heating or coo-
ling the ambient air.
Water-side control by valves.
Particularly small built--in depth and height, therefore
especially 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 B C D E
500 527 497 563 730 755
630 627 597 663 885 855
800 857 827 893 1085 1085
1000 1057 1027 1093 1335 1285
1250 1257 1227 1293 1553 1485
165
58 55
100 30
50 80
60
32
119
25
RL
VL
18
min. 80 min. 10 22
165
266
431
18745
15
160
total length, dimension E
unit suspension, dimension C
unit length, dimension A
air outlet, dimension B
length of drain tray, dimension D
note: drain tray length may exceed
total length of unit.
air outlet
condensate
drainage 22
Ø15
rubber stop to be ordered separa-
tely acc. to wall clearance
min. 10
without rear suspension
suspension from
above -- special
version
standard:
bracket for
rear wall
installation
(accessory)
RL = water return
VL = water inlet
power
switch
The unit may be mounted using one of the following possibilities:
- suspension from above (attachment to the sill)
- wall mounting -- rear suspension

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
16
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Unit for Sill Installation, 2-pipe System, for extremely low inlet temperatures
Specification
Fan coil unit with one heat exchanger for heating or coo-
ling the ambient air.
Water-side control by valves.
Particularly small built--in depth and height, therefore
especially 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 B C D E
500 527 497 563 757 755
630 627 597 663 857 855
800 857 827 893 1087 1085
1000 1057 1027 1093 1287 1285
1250 1257 1227 1293 1487 1485
165
58 55
100 30
50 80
RL
VL
32
60
130
143
18
air outlet
25 25 22
165
431
187
266 15
160
total length, dimension E
unit suspension, dimension C
unit length, dimension A
air outlet, dimension B
length of drain tray, dimension D
note: drain tray length may exceed
total length of unit.
power
switch
insulated
drain tray
condensate
drainage 102
Ø15
rubber stop to be ordered
separately acc. to wall clearance
min. 15
without rear suspension
suspension from
above -- special
version
standard:
bracket for rear
wall installation
(accessory)
RL = water return
VL = water inlet
The unit may be mounted using one of the following possibilities:
- suspension from above (attachment to the sill)
- wall mounting -- rear suspension

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
17
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Technical Specifications, Unit for Sill Installation, 2-pipe System (legend see page 20)
Size 500
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I160 26 32 37 36 864 720
200/18
16
II 240 30 36 49 48 1152 960 20
III 290 36 42 57 56 1265 1120 23
IV 340 40 46 64 64 1408 1280 25
V430 46 52 73 73 1576 1460 31
Size 630
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I170 25 31 48 43 1032 860
200/20
16
II 260 29 35 59 59 1416 1180 20
III 310 35 41 68 68 1536 1360 23
IV 370 39 45 76 76 1672 1520 25
V480 46 52 87 87 1879 1740 31
Size 800
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I220 25 31 52 48 1152 960
200/22
176
II 320 28 34 72 64 1536 1280 20
III 380 34 40 83 78 1762 1560 23
IV 460 38 44 95 92 2024 1840 25
V580 45 51 105 105 2268 2100 31
Size 1000
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I300 27 33 62 59 1488 1180
200/23
25
II 420 30 36 82 76 1968 1520 29
III 470 34 40 92 89 2079 1780 33
IV 570 38 44 104 102 2288 2040 36
V720 46 52 114 114 2462 2280 42
Size 1250
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /t1
[W/K]
QkmF /t1
[W/K]
QkmF2
[W]
QksensmF2
[W]
wo/pw
[kg/h]/[kPa]
Pel
[W]
I360 27 33 80 73 1752 1460
200/25
25
II 470 30 36 98 92 2208 1840 29
III 570 35 41 107 104 2350 2080 33
IV 690 38 44 116 113 2486 2260 36
V830 46 52 128 124 2678 2480 42
1) Specific cooling capacity (noncondensing operation)
2) Cooling capacity with the following parameters: water inlet: 6_C,
induction air temperature before entering the heat exchanger: 26_C, 50% rel. humidity

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
18
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Unit for Sill Installation, 4-pipe System
Specifikation
Fan coil unit with one heat exchanger with two separate
water cycles for heating and cooling the ambient air.
Water-side control by valves.
Particularly small built-in depth and height, therefore
especially appropriate for a room-saving installation in
For extremely low inlet temperatures the unit is availa-
ble with an insulated drain tray.
Vertical installation.
Water connection on the right or left.
Dimensions
Size A B C D E
500 527 497 563 730 755
630 627 597 663 885 855
800 857 827 893 1085 1085
1000 1057 1027 1093 1335 1285
1250 1257 1227 1293 1553 1485
165
55
58
100 30
50 80
18
60
32
KKW- RL
HZG- RL
HZG-VL
KKW-VL
25
min. 80 min. 10 22
165
160
266 15
45 187
113
82
length of drain tray, dimension D
note: drain tray length may exceed
total length of unit.
air outlet, dimension B
unit length, dimension A
unit suspension, dimension C
total length, dimension E
KKW--VL = cooling -- water inlet
KKW--RL = cooling -- water return
HZG--VL = heating -- water inlet
HZG--RL = heating -- water return
condensate
drainage 22
Ø15
air outlet
rubber stop to be ordered
separately acc. to wall clearance
min. 10
without rear suspension
suspension from
above -- special
version
standard: bracket
for rear wall in-
stallation (acces-
sory)
The unit may be mounted using one of the following possibilities:
- suspension from above (attachment to the sill)
- wall mounting -- rear suspension

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
19
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Unit for Sill Installation, 4-pipe System, for extremely low inlet temperatures
Specification
Fan coil unit with one heat exchanger and two separate
cycles for heating or 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 B C D E
500 527 497 563 757 755
630 627 597 663 857 855
800 857 827 893 1087 1085
1000 1057 1027 1093 1287 1285
1250 1257 1227 1293 1487 1485
165
58 55
100 30
50 80
32
60
130
143
18
22165187
266 15
160
431
113
82
2525
totallength,dimensionE
unit suspension, dimension C
unit length, dimension A
air outlet, dimension B
length of drain tray, dimension D
note:drain tray length may exceed totallength ofunit.
KKW--VL = cooling -- water inlet
KKW--RL = cooling -- water return
HZG--VL = heating -- water inlet
HZG--RL = heating -- water return
air outlet
rubber stop to be ordered
separately acc. to wall clearance
min. 15
without rear suspension
insulated
drain tray
condensate
drainage 102
Ø15
suspension from
above -- special
version
standard:
bracket for rear
wall installation
(accessory)
power
switch
The unit may be mounted using one of the following possibilities:
- suspension from above (attachment to the sill)
- wall mounting -- rear suspension

Instructions for Installation, Use and Maintenance
Fan Coil Unit Type VFC
Section:
Page:
Date:
AG--B 201.1e
20
Feb. 2010
The Innovation Company
LTG Aktiengesellschaft
ELTG Aktiengesellschaft ⋅Grenzstraße 7 ⋅D-70435 Stuttgart ⋅[phone] ⋅Fax -720
Internet: http://www.LTG-AG.de ⋅E-Mail: [e-mail] ⋅Printed in Germany ⋅Ausgaben mit früherem
Datum werden hiermit ungültig ⋅Technische Änderungen vorbehalten ⋅Former editions are invalid ⋅Subject to technical modifications.
Technical Specifications, Unit for Sill Installation, 4-pipe System (legend see page 20)
Size 500
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I160 26 32 34 28 672 560 21 19
200 / 13 100 / 2.5
16
II 240 30 36 46 45 1080 900 28 28 20
III 290 36 42 54 54 1220 1080 32 32 23
IV 340 40 46 60 60 1320 1200 35 35 25
V430 46 52 68 68 1468 1360 40 40 31
Size 630
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I170 25 31 41 36 864 720 26 23
200 / 14 100 / 2.7
16
II 260 29 35 52 51 1224 1020 32 31 20
III 310 35 41 60 60 1356 1200 35 35 23
IV 370 39 45 67 67 1474 1340 39 39 25
V480 46 52 76 76 1641 1520 43 43 31
Size 800
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I220 25 31 47 42 1008 840 29 26
200 / 16 100 / 3.1
16
II 320 28 34 64 60 1440 1200 38 36 20
III 380 34 40 74 71 1604 1420 42 41 23
IV 460 38 44 82 81 1782 1620 47 47 25
V580 45 51 92 91 1965 1820 51 51 31
Size 1000
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I300 27 33 58 53 1272 1060 36 33
200 / 18 100 / 3.4
25
II 420 30 36 76 71 1704 1420 47 44 29
III 470 34 40 85 82 1853 1640 54 51 33
IV 570 38 44 95 92 2024 1840 59 57 36
V720 46 52 107 105 2268 2100 65 65 42
Size 1250
n
[-]
V
[m3/h]
LA18
[dB(A)]
LwA
[dB(A)]
QkoF /
t1
[W/K]
Qk
mF/t1
[W/K]
QkmF2
[W]
Qksens
mF2
[W]
QhoF /
t
[W/K]
QhmF /
t
[W/K]
wok /pw
[kg/h]/[kPa]
woh /pw
[kg/h]/[kPa]
Pel
[W]
I360 27 33 74 68 1632 1360 46 43
200 / 20 100 / 3.6
25
II 470 30 36 90 85 2040 1700 54 51 29
III 570 35 41 98 96 2196 1920 61 58 33
IV 690 38 44 106 104 2288 2080 63 61 36
V830 46 52 118 116 2505 2320 69 67 42
1) Specific cooling capacity (noncondensing operation)
2) Cooling capacity with the following parameters: water inlet: 6_C,
induction air temperature before entering the heat exchanger: 26_C, 50% rel. humidity