Toshiba RAV-DXC010 User manual

LC DX Interface
Installation manual
Model name:
For commercial use
RAV-DXC010
LC DX Interface
ENGLISH

1
LC DX Interface
Installation Manual
This symbol mark is for EU countries only.
This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and
Annex IV.
This product is designed and manufactured with high quality materials and components which can
be recycled and reused.
This symbol means that electrical and electronic equipment, at the end-of-life, should be disposed
of separately from your household waste.
Please dispose of this equipment at your local community waste collection / recycling centre.
In the European Union there are separate collection systems for used electrical and electronic
product.
Please read this Installation Manual carefully before installing the LC DX interface.
•This Manual describes the installation method of the LC DX interface.
•You must also refer to the Installation Manual attached to the Toshiba outdoor unit.
•Please follow the manual(s) for your Air Handling Unit (local supply).
•Toshiba Carrier UK (Ltd) does not take any responsibility on the local design.
ADOPTION OF R410A REFRIGERANT
This Air Conditioner is a type which adopts a HFC refrigerant (R410A) instead of the conventional
refrigerant R22 in order to prevent destruction of the ozone layer.
This appliance is for commercial use only and should not be accessible to the general public.
This appliance is not intended for use by person (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
Contents
1
SUPPLIED PARTS ……………..……………………
2
2
PRECAUTIONS FOR SAFETY ……………………………
2
3
INSTALLATION …………………………………….
3
4
ELECTRICAL WORK …………………………………
7
5
APPLICABLE CONTROLS ………................................
11
6
TEST RUN …………………………………….....
17
7
TROUBLE SHOOTING ………...................................
18
8
OPTIONAL PARTS …………………………………..
21
9
DECLARATION OF CONFORMITY ………………………....
22
10
SERVICE PARTS ……………………………………
23

2
LC DX Interface
Installation Manual
1SUPPLIED PARTS
The LC DX Interface is designed to allow the connection of a third party air handling unit (with R410A DX
Coil) to a Toshiba LC outdoor unit (DI / SDI / DI-Big).
The Interface consists of a LC DX Controller, including sensors (TC, TCJ and TA), and accessories that
include parts which the installer needs to assemble (including brazing).
LC DX Interface Item Description Qty
RAV-DXC010
Panel Door Key 1
Sensor Holder 2
Fix Plate 2
P Clamp (TA) 1
Installation manual (English) 1
IM Multi-Language CD 1
2PRECAUTIONS FOR SAFETY
•Ensure that all Local, National and International regulations are satisfied.
•Read this “PRECAUTIONS FOR SAFETY” carefully before installation.
•The precautions described below include the important items regarding safety. Observe them without fail.
•After the installation work, perform a trial operation to check for any problem.
•Follow the installation manual to explain how to use and maintain the unit to the customer.
•Turn off the main power supply switch (or breaker) before the unit maintenance.
•Ask the customer to keep the installation manual.
•THIS AIR CONDITIONER ADOPTS THE HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE
LAYER.
The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those of conventional refrigerant.
Accordingly the exclusive tools are required for the new refrigerant (R410A).
For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter. Moreover, do not use the existing piping because there are problems with the pressure-resistance force and
impurity in it.
This appliance must be connected to the main power supply by means of a switch with a constant separation of at least
3mm.
Refrigerant (R410A) Air Conditioner Installation
To Disconnect the Appliance from Main Power Supply

3
LC DX Interface
Installation Manual
3INSTALLATION
Use the following information to specify the appropriate AHU and DX Coil for each
outdoor unit. The DX Coil design should be optimised for Cooling (Rated) Condition:-
•The DX Coil must be suitable for R410A.
•The counter flow principle must be observed.
•The design should allow operation as both an Evaporator and a Condenser
•(Features: Multiple circuits / Liquid Capillary Distributor / Gas Header).
•A Drain Pan must be fitted (even if only used in Heat mode) due to defrost cycles.
•It is recommended to fit droplet eliminator plates in the discharge air stream if
used in Cool mode.
•The sensor holders must be brazed on to DX coil to ensure accurate temperature sensing.
•Cooling (Rated): Saturated Suction Temp. (Evaporating Temp.): 7°C
•Heating (Rated): Saturated Discharge Temp. (Condensing Temp.): 44°C
•Target Suction Super Heat: 5K
•System Maximum Operating Pressure: 4.15MPa
•DX Coil must satisfy Burst Pressure: More than 12.45MPa (3 times Maximum Operating Pressure)
AHU Air Volume
(m3/hr)
Coil Internal
Volume
(dm3)
Cooling
Capacity
(kW)
Heating
Capacity
(kW)
DI / DI-Big (SM)
SDI (SP)
Size
Standard
Min.
Max.
Rated.
Rated
RAV-
2HP 900 0.8 1.1
5.0 SM
5.0 SP
5.0 SP
5.6 SM
5.6 SP
5.6 SP
SM563AT-E
SP564AT-E
SP564AT-E
3HP 1320 1.0 1.4
6.7 SM
7.1 SP
7.1 SP
8.0 SM
8.0 SP
8.0 SP
SM803AT-E
SP804AT-E
SP804ATP-E
4HP 1600 1.5 2.1
10.0 SM
10.0 SP
10.0 SP
11.2 SM
11.2 SP
11.2 SP
SM1103AT-E1
SP1104AT-E
SP1104AT8-E
5HP 2100 1.7 2.7
12.1 SM
12.5 SP
12.5 SP
13.4 SM
14.0 SP
14.0 SP
SM1403AT-E1
SP1404AT-E
SP1404AT8-E
6HP 2800 1.7 3.2
14.0 SM
14.0 SP
16.0 SM
16.0 SP
SM1603AT-E
SP1604AT8-E
8HP 3600 3.0 4.2
20.0 SM
-
22.4 SM
-
SM2244AT8-E
-
10HP 4200 3.0 5.4
23.0 SM
-
27.0 SM
-
SM2804AT8-E
-
•The standard air volume flowrate is a guideline. Required capacity should be used for system matching.
•AHU fan motor must be interlocked to fan control output.
•Maximum DX-Coil U-pipe Outer Diameter: 12.7mm (1/2”)
•Recommended DX-Coil U-pipe Outer Diameter: 9.52mm (3/8”)
•Cooling & Heating output figures are based on calculations and ‘general’ test data. All figures are to be taken as approximations.
The properties of the third party DX Coil will have an affect on the performance of the outdoor units. All capacity data shown is
based on the following Rated Conditions: -
oCooling (Rated): Indoor air temperature 27°C db / 19°C wb, Outdoor air temperature 35°C db
oHeating (Rated): Indoor air temperature 20°C db, Outdoor air temperature 7°C db / 6°C wb

4
LC DX Interface
Installation Manual
Design Conditions for customers DX Coil
•The DX-Coil MUST be operated within the following limits to ensure reliability:-
oCooling mode DX coil “air on” temp: Min: 15°CWB (18°CDB) ~ Max: 24°CWB (32°CDB)
oHeating mode DX coil “air on” temp: Min: 15°CDB ~ Max: 28°CDB
•When used for Ventilation, the DX-Coil MUST be combined with other equipment such as heat recovery exchanger or heaters /
coolers to ensure that the CA limits are not exceeded:-
EA
SA
EA
Exhaust Air
OA
Outdoor Air
OA
RA
SA
Supply Air
Heat Recovery
Exchanger
DX COIL
CA
Coil Air (After Heat Recovery Exchanger)
CA
RA
Return Air
Recommended No. of Ref. Circuit by DX-Coil U-Pipe Dia. and DX Coil Size (HP)
U-Pipe
HP
No. of Circuits
Diameter
Min
Max
8.00
2
2
3
3
3
5
4
4
7
5
5
8
6
6
10
8
8
12
10
10
14
9.52
2
2
2
3
3
3
4
3
5
5
4
6
6
5
7
8
6
10
10
8
12
12.70
2
1
1
3
2
2
4
2
3
5
3
3
6
3
4
8
4
6
10
5
7
IP65
If the wiring is properly carried out by a specialist according to the local regulations, the device fulfills the protection class
IP65.
Automatic Mode
Please be aware that frequent mode changes could occur when using Automatic mode