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.