Vaillant VA 6-050 MXNHDI User manual

VA 6-060 MXNHO
VA 6-085 MXNHO
VA 6-105 MXNHO
VA 6-020 MXNHI
VA 6-025 MXNHI
VA 6-035 MXNHI
VA 10-020 MXNHI
VA 10-025 MXNHI
VA 10-035 MXNHI
VA 6-035 MXNHKI
VA 6-050 MXNHKI
VA 6-035 MXNHDI
VA 6-050 MXNHDI
climaVAIR
DE, EN, ES, HR, IT, NL, TR, PL

For the fitter
Installation Manual
Air-conditioner - climaVAIR
Multi Split Type
EN
VA 6-060 MXNHO
VA 6-085 MXNHO
VA 6-105 MXNHO
VA 6-020 MXNHI
VA 6-025 MXNHI
VA 6-035 MXNHI
VA 10-020 MXNHI
VA 10-025 MXNHI
VA 10-035 MXNHI
VA 6-035 MXNHKI
VA 6-050 MXNHKI
VA 6-035 MXNHDI
VA 6-050 MXNHDI

2
Contents
Multi Split Type Installation Manual
Contents
1 Your Safety
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
1.1 Symbols used
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
1.2 Proper Use of the Unit
. . . . . . . . . . . . . . . . . . . . . . .
3
2 Extreme Operating Conditions
. . . . . . . . . . . . . .
3
3 Identification of the Unit
. . . . . . . . . . . . . . . . . .
3
4 Declaration of Conformity
. . . . . . . . . . . . . . . .
4
5 Description of the Unit
. . . . . . . . . . . . . . . . . . .
4
5.1 Wall mounted type Indoor Unit
. . . . . . . . . . . . . . . .
4
5.2 Cassette type Indoor Unit
. . . . . . . . . . . . . . . . . . . . .
5
5.3 Duct type Indoor Unit
. . . . . . . . . . . . . . . . . . . . . .
5
5.4 Outdoor Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
5.5
Remote Controller
. . . . . . . . . . . . . . . . . . . . . . . . . . .
7
5.6 Connections and Channels
. . . . . . . . . . . . . . . . . . . .
7
5.7
Wall mounted type unit
Accessories
. . . . . . . . . . . .
7
5.8 Cassette type unit Accessories
. . . . . . . . . . . . . . . .
7
5.9 Duct type unit Accesories
. . . . . . . . . . . . . . . . . . . .
7
5.10
Technical Specifications
. . . . . . . . . . . . . . . . . . . .
8
6 Transport
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
7 Unpacking
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
8 Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
8.1
Qualification of the Installation Personnel
. . . . . .
9
8.2 General precautions to be taken into account
before starting the installation
. . . . . . . . . . . . . . . .
9
8.3 General Installation Diagram with Wall mounted
type units
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
8.4 General Installation Diagram with Cassette type
units
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
8.5 General Installation Diagram with Duct Type
units
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
9 Installation of the Wall mounted Indoor Unit
.
12
9.1 Selecting the Assembly Location
. . . . . . . . . . . . . .
12
9.2 Fixing the Assembly Plate
. . . . . . . . . . . . . . . . . . . .
12
9.3 Installation of the Pipes
. . . . . . . . . . . . . . . . . . . . . .
1
2
9.3.1
Methods for the Correct Discharge of the
Condensed Water
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
9.3.2 Handling the Coolant Pipes
. . . . . . . . . . . . . . . . . . .
1
3
9.3.3
Handling the Condensed Water Pipe
. . . . . . . . . .
1
3
9.3.4
Making Holes for the Pipes
. . . . . . . . . . . . . . . . .
1
4
9.3.5 Laying the Pipes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
5
9.3.6 Installation of the Indoor Unit Body
. . . . . . . . . . . .
1
5
10
Installation of the Cassette Indoor Unit
. . . . .
16
10
.1 General Warnings
. . . . . . . . . . . . . . . . . . . . . . . . . . .
16
10
.2 Selecting the Assembly Location
. . . . . . . . . . . . .
16
10
.3 Recommended Installation Process
. . . . . . . . . . . .
1
7
10
.
4 Installation of the Condensed Water Pipe
. . . . . . .
1
7
10
.4.1 Handling the
Condensed Water Pipe
. . . . . . . . . . .
1
7
10
.4.
2
Laying of the Condensed Water Pipe
. . . . . . . . .
1
7
10
.5
Installation of the Coolant Pipes
. . . . . . . . . . . .
1
8
10.5.1
Handling the Coolant Pipes
. . . . . . . . . . . . . . . . . .
1
8
10.5.2
Laying of the Coolant Pipes
. . . . . . . . . . . . . . . . . .
1
8
10
.6 Installation of the Fresh Air and Bypass Lines
. .
1
9
10
.7 Indoor unit Assembly in the Ceiling
. . . . . . . . . . .
1
9
10
.8 Connections
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
10
.9
Installation of the
decorative panel
. . . . . . . . . . .
20
11 Installation of the Duct Indoor Unit
. . . . . . . .
21
11.1 Initial check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
11.2
Attachment of the indoor unit
. . . . . . . . . . . . . . . . .
21
11.3 Installation of the indoor unit
. . . . . . . . . . . . . . . . .
21
11.4 Installation of the drainage pipe
. . . . . . . . . . . . . . .
21
11.5 Hanging the indoor unit
. . . . . . . . . . . . . . . . . . . . . .
21
12
Installation of the Outdoor Unit
. . . . . . . . . .
22
12.1 Selecting the Assembly Location
. . . . . . . . . . . . .
22
12.2 Planning the Coolant Return
. . . . . . . . . . . . . . . . .
23
12.3 Connection of the Coolant Pipes
. . . . . . . . . . . . .
23
12.4 Connection of the Pipe for the Drainage of the
Condensed Water
. . . . . . . . . . . . . . . . . . . . . . . . . . .
23
13 Electric Wiring
. . . . . . . . . . . . . . . . . . . . . . . . .
24
13.1 Safety Precautions
. . . . . . . . . . . . . . . . . . . . . . . . . .
24
13.2
Remark with regard to Directive 89/336/EEC
. . . .
24
13.3 Electric Connection of the Indoor Unit
. . . . . . . .
25
13.4 Electric Characteristics
. . . . . . . . . . . . . . . . . . . . . .
27
14
Communication between the Indoor and
Outdoor Units
. . . . . . . . . . . . . . . . . . . . . . . . .
28
14.1 Address setting for Cassette and V6 Wall Indoors
by using the remote
. . . . . . . . . . . . . . . . . . . . . . . .
28
14.2
Address setting for Cassette and Duct Indoor
units by using Dip switches
. . . . . . . . . . . . . . . . . .
29
14.3
Address setting for Wall units when using the
. .
dip
switches
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29
14.4 Address setting for Wall Indoors V 10 by using the
remote and the LCD display board
. . . . . . . . . . .
30
15 Preparation for Use
. . . . . . . . . . . . . . . . . . . . . .
31
15
.1 Checking for Leaks
. . . . . . . . . . . . . . . . . . . . . . . . . .
31
15
.2 Purging the Installation
. . . . . . . . . . . . . . . . . . . . . .
31
15
.3 Start Up
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
15
.4 Troubleshooting
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
1
6
Error Codes
. . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
1
6
.1
Cassette
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
3
1
6
.2
Duct
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4
1
6
.3
Wall
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
6
1
6
.4
Outdoor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
7

Multi Split Type Installation Manual
3
EN
1 Your Safety
1.1 Symbols used
Danger!
Direct danger for life and health.
Danger!
Danger of electric shock.
Warning!
Potentially dangerous situation for the product
and the environment.
Note!
Useful information and indications.
1.2 Proper Use of the Unit
This unit has been designed and manufactured for
acclimatisation purposes by means of air conditioning.
The use thereof for other domestic or industrial
purposes shall be the exclusive responsibility of the
persons projecting, installing or using them in that way.
Prior to handling, installing, start up, using or
performing maintenance on the unit, the persons
assigned to perform these tasks should be familiar with
all the instructions and recommendations set forth in
the unit's installation manual.
Note!
Keep the manuals throughout the service life of
the unit.
Note!
The information relating to this unit is divided
between two manuals: installation manual and
user manual.
Note!
The relevant personnel performing any service of
maintenance operations involving the handling of
the refrigerant fluid must have the necessary
certification to comply with all local and
international regulations.
2 Extreme Operating Conditions
This unit has been designed to operate within the range
of temperatures indicated on Figure 2.1. Ensure that
these ranges are not exceeded.
CALEFACCIÓN
Fig. 2.1 Operating ranges of the unit.
Legend
D.B. Temperature measured by dry bulb
3 Identification of the Unit
This manual is valid for the Split system series. In order
to know the specific model of your unit please refer to
the unit nameplates.
The nameplates are located on the outdoor and indoor
units.
Your Safety 1
Extreme operating conditions 2
Identification of the Unit 3
Indoor
Outdoor
43ºC D.B.
10ºC D.B.
18ºC D.B.
18ºC D.B.
27
ºC D.B.
24ºC D.B.
-15ºC D.B.
C
OOLING
HEATING
27
ºC D.B.
Note!
This equipment contains R-410A refrigerant. Do
not vent R-410A into atmosphere: R-410A, is a
fluorinated greenhouse gas, covered by Kyoto
Protocol, with a Global Warming Potential (GWP)
= 1975.
Note!
The refrigerant fluid contained in this
equipment must be properly recovered for
recycling, reclamation or destruction before
the final disposal of the equipment.

Multi Split Type Installation Manual
4
4 Declaration of Conformity
The manufacturer declares that this unit has been
designed and constructed in compliance with the
standard in force with regard to obtaining the CE
Marking.
5 Description of the Unit
This unit is comprised of the following elements:
- Indoor unit.
- Outdoor unit.
- Remote controller and holder.
- Connections and channels.
- Accessories.
Figure 5.1 shows the unit components.
Fig. 5.1 Unit components.
Legend
1 Indoor Unit
2 Outdoor Unit
3 Remote controller and holder
4 Connections and channels
5 Condensed water drainage pipe
5.1 Wall mounted type Indoor Unit
The indoor unit provides acclimatised air inside the
room to be acclimatised.
The dimensions and weights of the indoor unit are
shown on Figure 5.2 and Table 5.1, depending on the
model (please consult the model nameplate).
The dimensions are given in mm.
Fig. 5.2 Dimensions of the indoor unit.
Legend
H Height
L Width
D Depth
MODEL
H
L
D
kg
VA 6-020 MXNHI
285
760
182
8.6
VA 6-025 MXNHI
285
760
182
8.6
VA 6-035 MXNHI
285
760
182
8.6
VA 10-020 MXNHI
265
795
197
7.6
VA 10-025 MXNHI
265
795
197
7.6
VA 10-035 MXNHI
265
795
197
7.6
Table 5.1 Dimensions and weights of the indoor unit.
4 Declaration of Conformity
5 Description of the Unit

Multi Split Type Installation Manual
5
EN
5.2 Cassette type Indoor Unit
The indoor unit provides acclimatised air inside the
room to be acclimatised.
The dimensions and weights of the indoor unit are
shown on Figure 5.3 and 5.4 and Table 5.2 and 5.3,
depending on the model (please consult the model
nameplate).
The dimensions are given in mm.
Fig. 5.3 Dimensions of the Indoor Unit (plant).
MODEL
A
B
C
D
Kg
VA 6-035 MXNHKI
570
570
700
700
17
VA 6-050 MXNHKI
580
580
700
700
19
Table 5.2 Dimensions and Weights of the Indoor Unit (plant).
Fig. 5.4 Dimensions of the Indoor Unit (lateral).
MODEL
H
I
Ø
D
VA 6-035 MXNHKI
260
60
100mm
VA 6-050 MXNHKI
260
60
100mm
Table 5.3 Dimensions of the Indoor Unit (lateral).
5.3 Duct type Indoor Unit
The indoor unit provides acclimatised air inside the
room to be acclimatised.
The dimensions and weights of the indoor unit are
shown on Figure 5.5 and Table 5.4, depending on the
model (please consult the model nameplate).
The dimensions are given in mm.
Fig. 5.5 Dimensions of the Indoor Unit.
MODEL
A
B
C
D
E
F
G
H
I
VA 6-035 MXNHDI
538
483.5
131
610
255
105
418
508
220
VA 6-050 MXNHDI
1002
483.5
131
1105
255
105
880
970
220
Table 5.4 Dimensions and Weights of the Indoor Unit.
Description of the Unit 5

Multi Split Type Installation Manual
6
5.4 Outdoor Unit
The outdoor unit ensures that the absorbed air is
released to the outside from the room during operation
in cooling mode and that the heat introduced into the
room during operation in heat pump mode is taken from
the outside.
The dimensions and weights of the outdoor unit are
shown on Figure 5.6 and Table 5.5, depending on the
model (please consult the model nameplate).
The dimensions are given in mm.
Fig. 5.6 Dimensions of the outdoor unit.
Legend
H Height
L Length
D Depth
A Length of valves
B Distance between valves
C Distance from the second valve to the floor
MODEL
H
L
D
A
B
C
I
J
Kg
VA 6-060 MXNHO
680
928
288
54
51
147
319,5
583
54
VA 6-085 MXNHO
840
1068
340
45,8
58,2
158,4
380
580
74
VA 6-105 MXNHO
840
1068
340
45,8
58,2
158,4
380
580
75
Table 5.5 Dimensions and weights of the outdoor unit.
5 Description of the Unit
Air inlet
Air outlet

Multi Split Type Installation Manual
7
EN
5.5 Remote Controller
The remote control allows using the unit
5.6 Connections and Channels
This unit has the following connections and channels:
- Gas (G) and liquid channels (L): they carry the cooling
agent between the outdoor and indoor unit.
- Discharge channels for condensed water (in the
outdoor and indoor unit): they allow the water to be
properly discharged which condenses during the
normal operation of the unit.
- Electric connections: they supply electric energy to
the unit.
5.7 Wall mounted type unit Accessories
This unit is provided with the accessories shown on Table 5.6.
No.
Accessory
Quantity
1
Remote Control
1
2
Remote Controler Bracket
1
3
Batteries
2
4
Mounting plate
1
5
Piping support plate
1
6
Cushion
4
7
Drainage elbow
1
8
Cover
1
9
Drain tube
1
10
Steel nail, cement
6
11
Screw caps
2
12
Wireclamp
1
13
Installation Manual
1
14
User Manual
1
15
Warranty cards
2
Table 5.6 Accessories supplied with the unit.
5.8 Cassette type unit Accessories
This unit is provided with the accessories shown on Table 5.7.
No.
Accessory
Quantity
1
Remote Control
1
2
Remote Controler Bracket
1
3
Batteries
2
4
Cushion
4
5
Drainage elbow
1
6
Screw caps
2
7
Wireclamp
1
8
Installation Manual
1
9
User Manual
1
10
Warranty cards
2
Table 5.7 Accessories supplied with the unit.
5.9 Duct type unit Accessories
This unit is provided with the accessories shown on
Table 5.8.
No.
Accessory
Quantity
1
Wired remote control
2
2
Screw caps
2
3
User Manual
2
Table 5.8 Accessories supplied with the unit.
Description of the Unit 5

Multi Split Type Installation Manual
8
5.10 Technical Specifications
Indoor Units
Units
VA 6-020 MXNHI
VA 6-025 MXNHI
VA 6-035 MXNHI
VA 10-020 MXNHI
VA 10-025 MXNHI
Wall
Capacity
Cooling Capacity
kW
2.00
2.50
3.50
1,94
2.36
Heating Capacity
kW
2.30
2.90
3.80
2.26
2.76
Air Flow
m
3
/h
450/400/370
500/450/400
600/550/500
380/430/480
390/450/520
Sound Power level
dB(A)
56/52/45
56/52/45
56/52/45
30/33/36
31/34/38
Net Dimensions (HxLxD)
mm
285x760x182
285x760x182
285x760x182
265x795x197
265x795x197
Net Weight
kg
8.6
8.6
8.6
7.6
7.6
Panel Net Weight
kg
/
/
/
/
/
Air Drop (static pressure)
Pa
/
/
/
/
/
Pipe Connections
Pipe Connection liq/gas
inches
1/4-3/8
1/4-3/8
1/4-3/8
1/4-3/8
1/4-3/8
Indoor Units
Units
VA 10-035 MXNHI
VA 6-035 MXNHKI
VA 6-050 MXNHKI
VA 6-035 MXNHDI
VA 6-050 MXNHDI
Wall
Cassette
Duct
Capacity
Cooling Capacity
kW
3.10
3.24
5.03
3.61
5.15
Heating Capacity
kW
2
.80
3.45
5.47
3.85
5.65
Air Flow
m
3
/h
430/480/550
630/530/450
670/600/550
[550/]500/450/400
[1270/]1160/1020/900
Sound Power level
dB(A)
33/36/39
57/53/50
57/53/50
[56/]53/51/48
[59/]57/53/51
Net Dimensions (HxLxD)
mm
265x795x197
260x570x570
260x580x580
220x610x500
220x1090x500
Net Weight
kg
7.6
17
19
14
25
Panel Net Weight
kg
/
2.8
2.8
Air Drop (static pressure)
Pa
/
/
/
20
20
Pipe Connections
Pipe Connection liq/gas
inches
1/4-3/8
1/4-3/8
1/4-1/2 (includes
connector for OU)
1/4-3/8
1/4-1/2 (includes
connector for OU)
Table 5.9 Technical specifications
Indoor Unit
.
Outdoor Unit
Units
VA 6-060 MXNHO
VA 6-085 MXNHO
VA 6-105 MXNHO
Power Supply
V/Ph/Hz
230/1/50
230/1/50
230/1/50
Cooling Capacity
kW
5.55
8.20
10.27
Power Input
kW
1.72
2.47
3.27
Operating current
A
8,60
12,30
16,30
Performance
Air Flow volume
m
3
/h
3200/2300/1600
4000/3200/2300
4300/3500/2600
Sound Power level
dB(A)
66/63/60
66/63/60
68/65/62
Refrigerant
R410A
Refrigerant charge heat pump
gr
2000
2600
3000
Expansion system
Electronic expansion valve
Dimensions (HxLxD)
mm
680x928x288
840x1068x340
840x1068x340
Net Weight
kg
54
74
75
Pipe Connections
Pipe connection liq/gas
1/4-3/8
1/4-3/8
1/4-3/8
Max. Piping lenght (L1)
m
25
25
25
Max. L1+L2+L3+(L4 fo the 4x1)
m
45
60
60
Max. Height IU under OU
m
10
10
10
Max. Height OU under IU
m
15
15
15
Chargeless length
m
30
40
40
Additional charge per m.
gr
20
20
20
Table 5.10 Technical specifications
Outdoor Unit
.
Note!
As part of its policy for ongoing improvements of
its products, Vaillant reserves the right to modify
these specifications without prior notice.
5 Description of the Unit

Multi Split Type Installation Manual
9
EN
6 Transport
Danger of injury and physical damage!
During transport and unloading, the unit could
fall and injure anyone within the immediate
vicinity. To avoid this:
-
Use transport and lifting gear with suitable
load capacity for the unit weight.
-
Use the transport and lifting gear correctly
(consult the respective user manuals).
-
Use the slinging points provided for such a
purpose on the unit.
-
Secure the unit correctly.
-
Use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
7 Unpacking
Danger of injury and physical damage!
During unpacking you could get cut and bruised.
To avoid this:
-
Use lifting gear with suitable load capacity
for the unit weight.
-
Use the transport and lifting gear correctly
(consult the respective user manuals).
-
Use the slinging points provided for such a
purpose on the unit.
-
Use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
Unpack the unit and check that:
- The supply is complete.
- All the elements are in perfect condition.
Failing this, contact the manufacturer.
Warning!
Protect the environment. Dispose of the
packaging following the local standards in force.
Do not dispose of it without the proper controls.
8 Installation
8.1 Qualification of the Installation Personnel
Ensure that this unit is installed by authorised
personnel.
The personnel authorised by Vaillant must be suitably
qualified and able to install the unit correctly.
8.2 General precautions to be taken into account
before starting the installation
Danger of injury and physical damage!
During unpacking you could get cut and bruised.
To avoid this:
-
Use lifting gear with suitable load capacity
for the unit weight.
-
Use the transport and lifting gear correctly
(consult the respective user manuals).
-
Use the slinging points provided for such a
purpose on the unit.
-
Use suitable personal protection equipment
(helmet, gloves, safety boots and protective
glasses).
Danger of injury and physical damage!
The unit should be installed in accordance with
the Regulations and Standards for refrigerator,
electrical and mechanical installation prevailing
in relation to the location of such installations.
Danger!
Danger of electric shock.
Connect the earth cable to the right line (not to
the gas pipe, water pipe, lightning conductor or
telephone line).
Danger!
Danger of electric shock.
Install differentials to avoid short-circuits.
Warning!
Danger of breakdowns or malfunction.
Use the pipes specifically intended for coolant
for the cooling installation. Never use plumbing
pipes.
Transport 6
Unpacking 7
Installation 8

Multi Split Type Installation Manual
10
8.3 General Installation Diagram with Wall mounted
type units
Warning!
Danger of breakdowns or malfunction.
Observe the minimum assembly distances
indicated in Figure 8.1.
Fig. 8.1 General diagram of the installation and the minimum
assembly distances.
Legend
1 Indoor Unit
2 Outdoor Unit
3 Pipe for draining the condensed water
A Front separation (minimum 10 cm)
B Top separation in relation to the ceiling (minimum 5 cm)
D Height in relation to the floor (minimum 2 m)
E Side separation opposite side connections (minimum 10 cm)
F Rear separation (minimum 10 cm)
G Side separation connections side (minimum 15 cm)
H Front separation (minimum 60 cm)
8.4 General Installation Diagram with Cassette
type units
Warning!
Danger of breakdowns or malfunction.
Observe the minimum assembly distances
indicated in Figure 8.2 and 8.4.
Fig. 8.2 General diagram of the installation and the minimum
assembly distances.
Legend
1 Indoor Unit
2 Outdoor Unit
3 Pipe for draining the condensed water
E Side separation opposite side connections (minimum 10 cm)
F Rear separation (minimum 10 cm)
G Side separation connections side (minimum 15 cm)
H Front separation (minimum 60 cm)
8 Installation

Multi Split Type Installation Manual
11
EN
Installation 8
8.5 General Installation Diagram with Duct type
units
Warning!
Danger of breakdowns or malfunction.
Observe the minimum assembly distances
indicated in Figure 8.3 and 8.5.
Fig. 8.3 General diagram of the installation and the minimum
assembly distances.
Legend
1 Indoor Unit
2 Outdoor Unit
3 Pipe for draining the condensed water
E Side separation opposite side connections (minimum 10 cm)
F Rear separation (minimum 10 cm)
G Side separation connections side (minimum 15 cm)
H Front separation (minimum 60 cm)
Fig. 8.4 Minimum assembly distances
(Cassette unit).
MODEL
A
B
C
D
VA 6-035 MXNHKI
1000
1000
1000
1000
VA 6-050 MXNHKI
1000
1000
1000
1000
Table 8.1 Indoor unit minimum assembly distances.
Fig. 8.5 Minimum assembly distances
(Duct type unit).
MODEL
A
B
C
D
VA 6-035 MXNHDI
200
200
500
500
VA 6-050 MXNHDI
200
200
500
500
Table 8.2 Indoor unit minimum assembly distances.

Multi Split Type Installation Manual
12
9 Installation of the Wall Mounted
Indoor Unit
9.1 Selecting the Assembly Location
Warning!
Danger of breakdowns or malfunction.
Observe the minimum assembly distances
indicated in Figure 8.1.
Note!
If a hole already exists in the wall or a coolant
pipe or condensed water pipe has already been
installed, the base plate can be mounted to adapt
to these conditions.
Recommendations:
-
Install the indoor unit close to the ceiling.
-
Choose a mounting site that will allow air to reach all
parts of the room evenly. Avoid beams, installations or
lights which obstruct the airflow.
-
Install the indoor unit at an adequate distance from
chairs or workstations in order to avoid unpleasant
draughts.
- Avoid close heat sources.
9.2 Fixing the Assembly Plate
Carry out the steps described below:
• Place the mounting plate on the chosen installation
point.
• Level the plate horizontally and mark the holes to be
made on the wall for the installation using the screws
and rawplugs.
• Remove the plate.
Warning!
Danger of breaks in the domestic installation.
Check that there are no electricity lines, pipes or
any other element which could be impaired
behind the spots where the holes are to be
drilled.
If so, choose another installation location and
repeat the aforementioned steps.
• Make the holes using a drill and insert the rawplugs.
•
Place the assembly plate in the assembly location,
level it horizontally and fix it with the screws and the
rawplugs.
Warning!
Danger of breakdowns or malfunction.
Ensure that the assembly plate has been
correctly levelled.
Otherwise, disassemble the plate and assemble it
again correctly.
9.3 Installation of the Pipes
9.3.1
Methods for the Correct Discharge of the
Condensed Water
Warning!
Danger of breakdowns or malfunction. Danger of
condensed water spillage.
In order to ensure that the unit drains correctly
take the requirements described in this section
into account.
Methods for the removal of the condensed water which
is generated in the indoor unit:
-
Condensed water can be allowed to drain naturally
using the natural tilt of the condensed water pipe
along with the coolant pipe. In order for it to be
aesthetically pleasing, use a joint channel.
- The natural tilt of the condensed water pipe from the
indoor unit to the container (washbasin, sink, etc.).
Different invisible installation solutions also exist.
-
Using an external pump for condensed water, carrying
the condensed water to the outside or to the house
drainage system.
- By natural tilt to the collector deposit for condensed
water which is emptied using a pump for condensed
water. The pump for condensed water receives a signal
from the tank and takes the water from the tank
conveying it to the outside or to the house drainage
system.
Note!
This pump for condensed water is available as an
original Vaillant accessory with the
corresponding installation instructions.
Warning!
Danger of breakdowns or malfunction. Danger of
condensed water spillage.
To ensure that the unit carries out the drainage
properly in the event of draining using a natural
tilt, the condensed water pipe must also have a
tilt from the indoor unit.
9 Installation of the Wall Mounted Indoor Unit

Multi Split Type Installation Manual
13
EN
9.3.2 Handling the Coolant Pipes
Danger!
Danger of burns and eye injuries.
In the event of soldering, use suitable
protection equipment (protective soldering
mask, soldering gloves, solderer clothing).
Warning!
Danger of breakdowns or malfunction. Danger of
wear in the coolant pipes.
To ensure that the coolant pipes do not wear
take the following points into consideration:
- Use pipes specifically intended for cooling.
Note!
In specialised dealers you will find coolant pipes
which are thermally insulated as a Vaillant
accessory.
-
Ensure that the pipes are clean, dry and polished on
the inside.
-
The insulation of the pipes should be done using
specific insulation for cooling.
- Observe the minimum and maximum pipe distances
for each model.
-
Do not bend the pipes where possible. When bending
them, keep the radius as wide as possible to minimise
load losses.
- If soldering, do so using strong welding (copper-silver
alloy). During the soldering process a stream of dry
nitrogen should be run through the inside of the pipes
in order to avoid rusting.
- Only cut the coolant pipes using pipe cutters and
always keep the pipe ends covered.
-
Any flaring work should be performed meticulously in
order to avoid subsequent losses of gas through the
pipes.
-
When reviving keep the pipe opening directed
downwards in order to prevent shavings from getting
into the pipes.
-
Mount the joining tubes carefully, ensuring they
cannot become displaced. Ensure that they will not
cause traction in the joins.
-
Equip the coolant pipes (inflow and outflow) separately
and with thick diffusion heat insulation.
-
Carefully squeeze the flaring connector, centring the
flaring cone and the flanged nut. Applying excessive
force without correctly centring can damage the
thread and cause a reduction in the water tightness in
the join.
9.3.3 Handling the Condensed Water Pipe
Warning!
Danger of breakdowns or malfunction. Danger of
incorrect drainage of the condensed water and
wear of materials due to dripping water.
Take the following points into consideration:
-
Ensure that air circulates through the condensed
water pipe in order to guarantee that the water can be
freely released. Otherwise, the condensed water could
leak through the indoor unit body.
-
Mount the pipe without bending it in order to avoid
blockage.
-
If the water pipe is channelled outdoors, ensure that it
is insulated against freezing.
- If the condensed water pipe is installed in a room, fit
thermal insulation.
- Avoid installing the condensed water pipe with an
ascending bend (see Figure 9.2).
Fig. 9.2 Avoid ascending bends.
- Avoid installing the condensed water pipe with it free
end submerged in water (see Figure 9.3).
Fig. 9.3 Avoiding submerging the end.
- Avoid installing the condensed water pipe with
crimping (see Figure 9.4).
Installation of the Wall Mounted Indoor Unit 9

Multi Split Type Installation Manual
14
Fig. 9.4 Avoid crimping.
- Install the condensed water pipe in such a way that
the distance of its free end from the floor is at least 5
cm (see Figure 9.5).
Fig. 9.5
Minimum distance from the floor.
Legend
H Minimum distance from the floor: 5 cm
- Install the condensed water pipe in such a way that its
free end is kept away from unpleasant odours to
ensure that they do not penetrate the room (see
Figure 9.6).
Fig. 9.6 Avoids unpleasant odours.
9.3.4 Making Holes for the Pipes
• Case A: laying the rear piping.
In the event of laying the rear piping, a suitable hole
must be made (see Figure 9.7).
• Drill a hole in accordance with the diameter
indicated in Figure 9.7, slightly descending to the
outside.
Fig. 9.7 Dimensions of the hole for the piping.
• Case B: laying the side or bottom piping.
In this case holes do not have to made on the wall
since the indoor unit body has windows which can be
opened to admit the pipes: choose the most adequate
one for the desired outlet position (see Figure
9.8
).
• Carefully break the chosen window on the lid using
pliers.
Fig. 9.8 Windows for the installation of the pipes.
Legend
1 Lid for right piping
2 Lid for indoor piping
3 Securing with adhesive tape
4 Lid for left piping
9 Installation of the Wall Mounted Indoor Unit

Multi Split Type Installation Manual
15
EN
9.3.5 Laying the Pipes
• If installing the rear piping:
•
Place the lid supplied for the hole in the piping and
insert the coolant pipes with the condensed water
pipe through the hole.
•
Seal the hole properly after installing the pipes.
• Carefully bend the installation pipe in the right
direction.
Warning!
Danger of breakdowns or malfunction. Danger of
wear in the coolant pipes.
Bend the pipe carefully to prevent choking or
breaks.
• Cut the pipes, leaving enough extra piping hanging
over to enable the unit to be hooked up at the indoor
unit joins.
• Insert the nut in the coolant pipe and carry out the
flaring.
• Carefully remove the insulation of the flared
connections in the indoor unit.
• Hang the indoor unit on the top edge of the mounting
plate.
•
Tilt the lower part of the indoor unit forwards and
insert an auxiliary tool (e.g. a piece of wood) between
the mounting plate and the unit (see Figure 9.9).
Fig. 9.9 Assembling the indoor unit.
• Connect the coolant pipes and the condensed water
hose to the corresponding pipes and installation drain.
•
Insulate the coolant piping correctly and separately. To
do so, cover any possible cuts with masking tape or
insulate any bare coolant piping with the
corresponding insulation material used for cooling.
Fig. 9.10 Laying the Pipes.
Legend
1 Heat-resistant material
2 Drain pipe
3 Coolant pipe
4 Piping support plate
5 Indoor/outdoor electric cable
• Insert the electric piping, connect the line on the
indoor unit terminal strip and assemble the cabling
covering (see section 13).
• Carry out the start up and the equipment functional
test (see section 15).
• Fix the entire indoor unit (see section 9.3.6)..
Note!
The connections in the flaring should be
accessible in order to carry out the water
tightness tests.
• Install the mounting plate, lining up the holes with the
help of the plate.
9.3.6 Installation of the Indoor Unit Body
• Check that the installation has been carried out
correctly and that there are no leaks (see section 15.1).
•
Securely hang the indoor unit body onto the upper
notches of the mounting plate. Briefly move the body
from side to side to verify that it is secure.
• Lift the body up slightly from underneath, press it
onto the mounting plate and then lower it vertically.
The body will fit into the lower supports on the
mounting plate.
• Check that the indoor unit is properly secured.
• In the event that the body does not slot into the
supports properly, repeat this process.
Installation of the Wall Mounted Indoor Unit 9

Multi Split Type Installation Manual
16
10
Installation of the Cassette Indoor Unit
10.1 General Warnings
Warning!
Outdoor units must be placed in accessible areas
for subsequent maintenance and repair
operations. Vaillant will not be responsible for
any costs derived from incorrect positioning that
prevents easy access
.
Danger of physical damage!
To avoid the indoor unit from falling during the
assembly, carry out the work with the help of a
second person.
Warning!
Danger of deterioration of the indoor unit.
When you lift the indoor unit, do so by
supporting it at the four corners only.
Avoid lifting the unit up by the condensation
drainpipe or by the pipe connections.
Warning!
Danger of deterioration of the indoor unit drip
tray.
When you lift the indoor unit do not exert
pressure on the drip tray to avoid damaging it.
Warning!
Danger of malfunction due to incorrect air
circulation and the build-up of condensed water
on the ceiling or in the lower part of the indoor
unit.
To avoid this, ensure that the lower part of the
indoor unit is horizontally levelled and flush with
the finished ceiling
.
Note!
It is recommended to assemble the coolant
pipes, remove condensed water and carry out the
electrical installation before mounting the indoor
unit in the ceiling and to make the connections
immediately after mounting the indoor unit. This
will provide you with more space.
10.2 Selecting the Assembly Location
Danger of personal injury and material damage
from collapse!
Ensure that the ceiling and the fixing elements
are able to withstand the weight of the indoor
unit.
Warning!
Danger of breaks in the domestic installation.
Check that there are no electricity lines, pipes
or any other element which could be impaired
behind the spots where the holes are to be
drilled.
If so, choose another installation location and
repeat the aforementioned steps.
Warning!
Danger of breakdowns or malfunction.
Observe the minimum assembly distances
indicated in Figure 8.2 and 8.4.
Note!
The indoor unit can be installed with the false
ceiling fitted or not fitted.
Recommendations
- Choose a mounting site that will allow air to reach all
parts of the room evenly. Avoid beams, installations or
lights which obstruct the airflow.
- Install the indoor unit at an adequate distance from
chairs or workstations in order to avoid unpleasant
draughts.
- Avoid close heat sources.
- Ensure you leave sufficient space for carrying out
connection and inspection tasks of the indoor unit.
Warning!
Danger of breakdowns or malfunction.
Ensure that the assembly plate has been
correctly levelled.
Otherwise, disassemble the plate and assemble it
again correctly.
10 Installation of the Cassette Indoor Unit

Multi Split Type Installation Manual
17
EN
10.3 Recommended Installation Process
It is recommended carrying out the installation in the
following order:
• Installation of the condensed water pipe.
• Installation of the coolant pipes.
• Installation of the fresh air and bypass lines.
•
Electrical installation.
• Indoor unit assembly in the ceiling.
• Connections.
• Checking for leaks and starting the unit.
• Assembly of the decorative panel.
10.4 Installation of the Condensed Water Pipe
10.4.1 Handling the Condensed Water Pipe
Warning!
Danger of breakdowns or malfunction. Danger of
incorrect drainage of the condensed water and
wear of materials due to dripping water.
Take the following points into consideration:
- Ensure that air circulates through the
condensed water pipe in order to guarantee
that the water can be freely released.
Otherwise, the condensed water could leak
through the indoor unit body.
- Mount the pipe without bending it in order to
avoid blockage.
- If the water pipe is channelled outdoors,
ensure that it is insulated against freezing.
- If the condensed water pipe is installed in a
room, fit thermal insulation.
- Avoid installing the condensed water pipe with
an ascending bend.
- Avoid installing the condensed water pipe with
it free end submerged in water.
- Avoid installing the condensed water pipe with
crimping.
- Install the condensed water pipe in such a way
that the distance of its free end from the floor
is at least 5 cm.
- Install the condensed water pipe in such a way
that its free end is kept away from unpleasant
odours to ensure that they do not penetrate
the room.
10.4.2 Laying of the Condensed Water Pipe
Note!
The indoor unit is fitted with a condensed water
removal pump.
Note!
Use a pipe whose diameter is at least the same
as the diameter of the indoor unit connection
(polyethylene pipe: inner diameter 25 mm, outer
diameter 32 mm).
•
Plan the layout of the condensed water pipe taking
into account the indications in section 10.4.1.
- Ensure that the pipe is as short as possible.
- Ensure that the minimum inclination from the indoor
unit is at least 1%.
• Mount the pipe supports taking into account the
distances and inclinations indicated in figure 10.1.
Fig. 10.1 Installation diagram of the Pipe for the Drainage of
the Condensed Water.
Legend
1 Pump flange (jacketing)
A Distance with regard to the indoor unit (maximum 200 mm)
B Distance between supports (maximum 1 - 1.50 m)
C Pipe inclination (minimum 1%)
H Maximum height of the pipe with regard to the pump (maximum
500 mm)
• Mount the condensed water pipe in its supports.
- Prevent the pipe from bulging to guarantee the
correct removal of the water.
• Insulate the pipe with thermal insulation.
Installation of the Cassette Indoor Unit 10

Multi Split Type Installation Manual
18
10.5 Installation of the Coolant pipes
10.5.1 Handling the Coolant Pipes
Danger!
Danger of burns and eye injuries.
In the event of soldering, use suitable
protection equipment (protective soldering
mask, soldering gloves, solderer clothing).
Warning!
Danger of breakdowns or malfunction. Danger of
wear in the coolant pipes.
To ensure that the coolant pipes do not wear
take the following points into consideration:
- Use pipes specifically intended for cooling.
- Ensure that the pipes are clean, dry and
polished on the inside.
- The insulation of the pipes should be done
using specific insulation for cooling.
- Observe the minimum and maximum pipe
distances for each model.
- Do not bend the pipes where possible. When
bending them, keep the radius as wide as
possible to minimise load losses.
- If soldering, do so using strong welding
(copper-silver alloy). During the soldering
process a stream of dry nitrogen should be
run through the inside of the pipes in order to
avoid rusting.
- Only cut the coolant pipes using pipe cutters
and always keep the pipe ends covered.
- Any flaring work should be performed
meticulously in order to avoid subsequent
losses of gas through the pipes.
- When reviving keep the pipe opening directed
downwards in order to prevent shavings from
getting into the pipes.
- Mount the joining tubes carefully, ensuring
they cannot become displaced. Ensure that
they will not cause traction in the joins.
- Equip the coolant pipes (inflow and outflow)
separately and with high density heat
insulation.
- Carefully squeeze the flaring connector,
centring the flaring cone and the flanged nut.
Applying excessive force without correctly
centring can damage the thread and cause a
reduction in the water tightness in the join.
Note!
In specialised dealers you will find coolant pipes
which are thermally insulated as a Vaillant
accessory.
10.5.2 Laying of the Coolant Pipes
Note!
Ensure that after mounting there is enough
space for accessing the indoor unit connections.
• Carefully bend the installation pipe in the right
direction.
Warning!
Danger of breakdowns or malfunction.
Danger of wear in the coolant pipes.
Bend the pipe carefully to prevent choking or
breaks.
• Position the pipes in the runoff provided.
•
Cut the pipes, leaving enough extra piping hanging
over to enable the unit to be hooked up at the indoor
unit joins.
• Insert the nut in the coolant pipe and carry out the
flaring.
• Insulate the coolant piping correctly and separately
(figure 10.2). To do so, cover any possible cuts with
masking tape or insulate any bare coolant piping with
the corresponding insulation material used for cooling.
Fig. 10.2 Pipe Insulation.
Legend
1 Coolant pipe (gas)
2 Insulation
3 Coolant pipe (liquid)
4 Winding
5 Condensed water drainpipe
10 Installation of the Cassette Indoor Unit

Multi Split Type Installation Manual
19
EN
10.6 Installation of the Fresh Air
Note!
Only applicable to the models indicated in table
10.1.
MODEL
FRESH AIR
VA 6-035 MXNHKI
YES
VA 6-050 MXNHKI
YES
Table 10.1 Models with lines available for renewing fresh air.
The side opening allows installing pipes for air intake
from outside and pipe shunting to be installed (see
figure 10.3).
Fig. 10.3 Fresh air line.
Legend
1 Flange on the fresh air line
2 Fresh air line
Carry out the following operations:
• Select the lines. Use lines with the following
characteristics:
- Base material: flexible polyester with spring interior
or corrugated aluminium.
- Diameter: 101,6 mm.
- External anti-condensation lining: fibreglass, 12-25
mm thick.
• Install the lines.
10.7 Indoor Unit Assembly in the Ceiling
Note!
The indoor unit is fixed to the ceiling using hooks
and hanging bars (threaded varilla M10), with its
corresponding nuts, locknuts and washers.
• Draw the position of the fixing elements according to
the indicated measurements.
- Observe the minimum assembly distances (see
section 8.4).
• Adapt the length of the threaded rods to the correct
measurement.
• Mount the fixing bars in the points provided
(optionally, you can use hooks fixed to the ceiling and
hang the fixing bars from them).
Fig. 10.4 Indoor unit assembly diagram.
Legend
1 Indoor Unit
2 False ceiling
3 Decorative panel
4 Upper fixing nut
5
Indoor unit support
6 Nut-locknut set
7 Fixing bar
8 Fixing hook (optional)
D Distance of the hook to the ceiling (34 mm)
• Position a nut in each fixing bar (which will remain
above the unit support) and a nut-locknut set (which
will remain below the support). See assembly diagram
in figure 10.4.
Installation of the Cassette Indoor Unit 10