Kroll LH Series User manual

TECHNICAL WORK SHEET
TECHNICAL MANUAL
Air Heaters
SERIES LH and LH-X

060026-01 / Mai 2021

2
INDEX
Page
Index
2
Range
3
General Information
4
Important safety regulations
5
Description of unit
5
Product reception
5
Handling and Transport
6
Removing the packaging
6
Identification
7
Overall dimensions and weight
7
Structure
8
Technical data
9
Abbreviation index-caption
10
Air flow
10
Spread sheets capacity
17
Positioning
18
Kit for Shelf installation
20
Vertical fin kit installation
20
Installation the ceiling mounting kit
21
Water coupling dimensions
21
Water circuit diagram
22
Inverting the water connections
22
Hydraulic connections
23
Electrical connections
24
Electrical connection plans
25
Accessorys
26
Filling –emptying the unit
26
Connecting haeting installation
27
Fin adjustment
28
Preparing for start-up
29
Checks during and after first-time start-up
33
Setting into operation
35
Maintenance
38
Troubleshooting
40
Conformity
41
Maintenances
42

3
Type
Art.no.
Standard housing
RAL 7035
LH...
Art. No.
Stainless steel housing
LHX...
LH/X130
038973-01
038989-01
LH/X230
038975-01
038991-01
LH/X330
038977-01
038993-01
LH/X430
038979-01
038995-01
LH/X530
038981-01
038997-01
LH/X630
038983-01
038999-01
Please read this manual carefully before setting the heater into operation !
This manual is an integral part of the product: always make sure the unit is accompanied by this manual!
Modifications are subject to change; The supplier cannot be held liable for erroneaous translations which may lead to
incorrect interpretation or errors in writing or printing.
The following symbols are used in some parts of this handbook:
WARNING = tasks requiring special caution and adequate training
FORBIDDEN = actions that MUST NOT be performed.

GENERAL INFORMATION
This manual is an integral part of the product:
always make sure the unit is accompanied by this
manual so that it can be consulted by the user,
installer and any specialized Assistance Service
personnel even in the event of sale. If it is damaged
or lost a copy can be requested from your
authorized dealer.
Repair and/or maintenance work must be carried
out by an Authorised Technical Service or
personnel qualified as described in this manual. Do
not modify or tamper with the heater as dangerous
situations may result: the Manufacturer cannot be
held liable for any damages resulting from failure to
observe the above.
After removing the unit from its packaging make
sure it has not been damaged during transport and
that no parts are missing; if in doubt contact your
dealer.
The Manufacturer is responsible for ensuring that
the unit complies with the rules, regulations,
directives and standards concerning construction in
force at the time the unit is put on sale. Awareness
of, understanding and observance of legislation and
standards regarding systems design, installation,
use and maintenance are, instead, the exclusive
responsibility of the planner, installer and user.
Installation of water-fed fan heaters must be effected
by a qualified company.
The Manufacturer cannot be held liable for failure to
observe the instructions contained in this manual,
for the consequences of actions not specifically
described in this manual or for erroneous
translations which may lead to incorrect
interpretation.
This unit has been designed for indoor heating
purposes only and must only be used for such
purpose in situations compatible with their
performance.
Too high an indoor temperatures is both unhealthy
and constitutes a wasteful use of energy.
If you do not intend to use the unit for a long period
of time you MUST at least do the following:
•turn the main unit switch and themains
socket switch to OFF.
•if there is a risk of sub-zero temperatures,
drain the water from the unit.
Use original spare parts only. The Manufacturer
cannot be held liable for any damages caused by
improper use of the unit or the use of non-original
parts.
References to laws, directives and regulations are
indicative only and are valid at the time of going to
press. The coming into force of new laws, or
amendments to existing ones, does not constitute
any obligation towards third parties on the part of the
Manufacturer.
4

5
IMPORTANT SAFETY REGULATIONS
Before carrying out any cleaning and/or
maintenance work on the unit always disconnect
the unit from the mains power supply by turning the
main switch to OFF.
Do not place any objects on the unit or insert any
objects through the cover grating.
Any modification to safety or regulation systems is
strictly forbidden without the Manufacturer’s
permission and guidance.
Do not touch the heat exchanger battery with naked
hands
Never tug or detach any wires protruding from the
unit even when the latter is disconnected from the
power supply.
Do not use adapters, multiple sockets or extension
leads to connect the unit to the electricity supply.
Do not dump packaging (plastic bags, expanded
polystyrene etc) improperly, but dispose it
according the valid regional directives.
It is forbidden to install the unit outdoors or where it
is exposed to adverse weather conditions.
Do not install the unit in areas with a damp or
“aggressive” atmosphere. Please consult your
dealer for such cases.
Impeccable fonction of the unit can be granted onlyif
the entrance-temperature and the pump-capacity
has been assured according to the unit’s
classification.
DESCRIPTION OF UNIT
Water-fed fan heaters are designed to provide heating
in winter and ventilation in summer. They are ideal for
indoor areas such as shops, workshops and factories.
Hot water produced by a boiler flows inside a water-air
heat exchanger; an air flow generated by an electrically
powered helical fan flows through the exchanger. As
the air flows through the exchanger it absorbs the heat
contained in the coil and the air temperature increases.
Thus cold air flows into the exchanger and hot air flows
out.
During the summer the fan can be run on its own to
provide ventilation.
GENERAL CONSTRUCTION CHARACTERISTICS
Water-air exchanger
Made up of a high-efficiency copper battery with aluminium fins.
Water connection couplings have a manual bleed valve.
Cover
Made of galvanised, pre-painted sheet metal; attractive, modern
design. Highly compact and versatile.
Helical fan
Made up of a safety grating and a high performance, silent-
running fan unit.
PRODUCT RECEPTION
The unit is sent in a single case and includes: WATER-FED
FAN HEATER PLASTIC BAG (A) containing:
•Instruction manual
•Type label

6
HANDLING AND TRANSPORT
Handling must be done by properly equipped personnel. All
equipment must be suitable to handle the weight of the unit.
Unit types LH/X 130- 530 are packaged in a cardboard case
with handles to aid transport.
Units types LH/X630 are packaged in a cardboard
case with a wooden base. Raise the case with a
fork-lift truck by inserting the forks in the special
guides hollowed out in the support beams.
Manual handling (LH/X 130-530)
Handling with a fork lift truck (LH/X 630)
WARNING!
Handling and transport must be carried out with the
utmost care so as to prevent damage to the heater
unit and ensure the safety of the personnel carrying
out the work.
Use of personal safety items (work gloves, hard hat,
work shoes etc.) is recommended.
If it is necessary to stack several units always
observe the stacking index: this is shown on the
case. Always align the cases carefully to prevent
stack instability.
REMOVING THE PACKAGING
To remove the packaging proceed as follows:
•Cut the strap (types LH/X 630 only);
•Open the upper part of the case;
•Remove the inner spacers;
•Pull the unit upwards out of the case.

7
IDENTIFICATION
The water-fed fan heateres are to be identified as follows:
The TECHNICAL DATA plaque has to be on the rear of the unit.
If the plaque is damaged or lost request a
duplicate from an Authorised Technical
Service.
OVERALL DIMENSIONS AND WEIGHT
TYPE
LH/LH-X
130
230
330
430
530
630
A
555
600
700
750
800
850
mm
B
400
450
550
600
650
700
mm
C
331
mm
D
95
115
110
120
150
170
mm
E
79
mm
F
72
mm
P
489
539
639
689
739
789
mm
Ø
M6
M6
M6
M6
M6
M6
F
Weight
18,2
20,6
27
32
35,7
44,4
kg

8
STRUCTURE
Structure of heater types LH/X 130-530
Structure of heater types LH/X 630
1
Heat exchanger Cu/Al
6
Fixing part
2
Side panel, left
7
Fixing plate
3
Side panel, right
8
Fan (s)
4
Upper –lower panel
9
Outflow grating
5
Internal part

9
Type LH/X 130
obere Drehzahl mittlere Drehzahl untere Drehzahl
Luftvolumenstrom m³/h
Nenndrehzahl 1/min
Motorleistung W
(3) RPM v riations attained via use of special accessories (available as optionals).
RPM figures are average values as RPM varies from model to model.
UNOBSTRUC ED AREA SOUND P ESSURE
MEASUREME T DIAGRAM
TECHNICAL DATA
TYPE LH/X
HEATING CAPACITY
NUMBER OF RANGE
FAN
MAX. AIR DELIVERY RATE
AIR OUTFLOW RANGE
AIR OUTFLOW
TEMPERATURE(1)
WATER SIDE HEAD LOSS
WATER FLOW RATE
ELECTRICAL POWER SUPPLY
PROTECTION DEGREE
ELECTRICAL POWER
MAX. ELECTRICAL CURRENT
NOISE LEVEL dB (A) (2)
NUMBER OF FANS
DIAMTETRl
FAN SPEED rpm
MAX-
MED-MIN
KW
kcal/h
Nr.
Nr
mm
U/min’
m3/h
m
°C
kPa
Liter/h
V / Hz
IP
W
A
MAX
MED
MIN
1
1400 –900 –700 (3)
230V~ / 50 Hz
130
17,3
14900
3
300
1550
17
47
20
1020
55
74
0,34
50
47
41
230
23,8
20450
3
315
2300
19
45
20
1401
55
86
0,38
51
47
45
330
35,4
31300
3
350
3400
25
46
19
2141
55
130
0,58
53
49
43
430
42,7
36750
3
400
3900
24
47
13
2514
55
200
0,90
53
49
43
530
52,4
45100
3
420
4900
26
46
16
3086
55
220
0,95
53
49
47
900-700 (3)
400V~ / 50 Hz
630
63
54150
3
1
600
6200
37
45
12
3707
55
245
1,04
52
-
46
(1)
Data refers to following conditions:
•
Water temperature 85-70 °C
•
Air temperature 15 °C
•
U.R. 50%
•
Atmospheric pressure 1013 mbar
•
Max fan speed
(2)
Data refers to following conditions:
Area unobstructed
•
•
Max fan speed
•
Unit installed on wall 3m above ground with sound pressure measured frontally at 5 m distance.

10
Abbreviation index –caption
Tw1
Water intake temperature
Q
Thermal output
Tw2
Water outlet temperature
A
Electrical current
tl1
Air intake temperature
dB(A)
Noise level
tl2
Air outlet temperature
PW
Water flow rate
G
Size
∆p
Water side head loss
V
Air flow rate
W = Water flow rate [m³/h]
Q = Heating capacity [kW]
Ä t w = Temperature difference
supply- / return temperature [k]
Size
Air flow rate
Walll
mounting
Ceiling mounting
Max fan
speed
Med fan
speed
Min.fan
speed
Air outflow
Standard outlet
Four side outlet
m³/h
m³/h
m³/h
max.
m
Mounting
height
H max. m
Effective
surface
m²
Mounting
height
H max. m
Effective
surface
m²
LH/X 130
1550
*
*
17
4,5
52
4,5
57
LH/X 130
*
1150
*
*
3,5
38
3,5
42
LH/X 130
*
*
850
3,0
28
3,0
31
LH/X 230
2300
*
*
19
4,5
62
4,5
68
LH/X 230
*
1820
*
*
4,0
50
4,0
55
LH/X 230
*
*
1550
*
3,5
40
3,5
44
LH/X 330
3400
*
*
25
5,0
73
5,0
80
LH/X 330
*
2000
*
*
4,5
54
4,5
60
LH/X 330
*
*
1350
*
4,0
45
4,0
50
LH/X 430
3900
*
*
24
5,5
80
5,5
88
LH/X 430
*
2650
*
*
5,0
62
5,0
69
LH/X 430
*
*
1850
*
4,5
49
4,5
54
LH/X 530
4900
*
*
26
6,0
95
6,0
105
LH/X 530
*
3150
*
*
5,5
73
5,5
81
LH/X 530
*
*
2200
*
5,0
61
5,0
67
LH/X 630
6200
*
*
37
7,0
125
7,0
132
LH/X 630
*
*
*
*
*
*
*
*
LH/X 630
*
*
6100
*
6,0
100
6,0
110
0,86 x Q
w = Ä t w

11
2
LH 130
Max fan speed
Med fan speed
Min.fan speed
Air flow rate
m³/h
1.550
1.150
850
Fan speed rpm
1/min
700 –900 - 1400
Electrical power
W
74
Electr.power
supply
V
230
Max. electr.
current
A
Max. 0,34
Weight
kg
18,2
Water flow rate
l
7,3
Connection
inch
1
Noise level
dB(A)
20
47
41
Heating
medium
tl1
°C
Q
kW
tl2
°C
ΔP
KPa
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
LTHW 50 / 40°C
20
6,40
32,00
8
5,50
34,00
6
11,90
62,00
5
15
7,90
30,00
12
6,80
32,00
9
13,00
60,00
7
10
10,98
29,34
8,57
31,31
6,92
33,30
5
12,12
27,00
9,90
29,24
8,00
31,49
0
13,78
24,59
11,26
27,08
9,10
29,60
-5
15,45
22,10
12,63
24,86
10,21
27,64
-10
17,15
19,53
14,03
22,55
11,34
25,59
-15
18,87
16,89
15,44
20,16
12,48
23,46
LTHW 60 / 40°C
20
6,61
32,70
2
5,66
34,60
2
4,82
36,80
1
15
8,43
30,90
4
7,20
33,30
3
6,06
35,80
2
10
11,52
31,26
9,47
33,56
7,68
35,84
5
13,18
28,94
10,83
31,51
8,79
34,12
0
14,86
26,53
12,21
29,37
9,91
32,25
-5
16,56
24,03
13,60
27,14
11,04
30,29
-10
18,27
21,46
15,00
24,81
12,18
28,24
-15
20,01
18,80
16,42
22,40
13,34
26,09
LTHW 70 / 50°C
20
10,22
39,60
5
8,92
43,00
4
7,63
46,70
3
15
11,71
37,10
6
10,21
40,90
5
8,76
45,10
4
10
14,83
37,37
12,16
40,25
9,85
43,16
5
16,50
34,50
13,53
38,10
10,96
41,26
0
18,19
32,46
14,91
35,86
12,08
39,32
-5
19,89
29,88
16,31
33,54
13,22
37,26
-10
21,62
27,23
17,73
31,13
14,37
35,12
-15
23,37
24,49
19,16
28,64
15,54
32,88
LTHW 80 / 60°C
20
13,25
45,4
8
11,52
49,80
6
9,85
54,40
5
15
14,76
42,8
9
12,83
47,60
7
10,96
52,70
6
10
18,08
43,38
14,80
46,82
11,97
50,30
5
19,77
40,89
16,88
44,59
13,08
48,33
0
21,47
28,32
17,57
42,27
14,22
46,28
-5
23,19
35,67
18,99
39,88
15,37
44,14
-10
24,94
32,97
20,42
37,39
16,54
41,92
-15
26,71
30,12
21,88
34,83
17,33
39,61
LTHW 90 / 70°C
20
16,30
51,00
11
14,10
57,00
8
4,70
37,00
6
15
17,80
48,00
13
15,30
54,00
10
5,80
35,00
7
10
21,31
49,33
17,42
53,33
14,08
57,38
5
23,01
46,77
18,81
51,03
15,20
55,34
0
24,72
44,13
20,22
48,64
16,35
53,21
-5
26,47
41,41
21,65
46,17
17,52
51,00
-10
28,23
38,60
23,11
43,62
18,70
48,71
-15
30,02
35,72
24,58
40,98
19,90
46,32

12
4
LH 230
Max fan speed
Med. fan speed
Min. fan speed
Air flow rate
m³/h
2.300
1.850
1.550
Fan speed rpm
1/min
700 –900 - 1400
Electrical power
W
86
Electr.power supply
V
230
Max. electr. current
A
Max. 0,38
Weight
kg
18
Water flow rate
l
8,8
Connection
inch
1
Noise level
dB(A)
51
47
45
Heating medium
tl1
°C
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
Air flow rate
20
8,80
31,00
8
8,00
33,00
7
7,40
34,00
6
15
10,80
29,00
11
9,80
31,00
10
9,10
32,00
8
10
14,84
28,47
12,87
29,90
11,41
31,06
5
17,17
26,01
14,88
27,63
13,20
28,96
0
19,53
23,48
16,92
25,30
15,00
26,78
-5
21,91
20,88
18,98
22,89
16,84
24,52
-10
24,32
18,21
21,08
20,40
18,70
22,19
-15
26,75
15,46
23,20
17,83
20,58
19,77
LTHW 60 / 40°C
20
9,05
31,70
2
8,100
33,00
2
7,39
34,20
2
15
11,62
29,80
4
10,40
31,40
3
9,45
32,80
3
10
16,26
30,22
14,15
31,88
15,59
33,23
5
18,62
27,79
16,20
29,64
14,41
31,16
0
21,01
25,27
18,26
27,31
16,25
28,99
-5
23,41
22,66
20,35
24,90
18,10
26,74
-10
25,83
19,97
22,46
22,39
19,98
24,39
-15
28,29
17,21
24,59
19,80
21,88
21,96
LTHW 70 / 50°C
20
14,05
38,20
5
12,79
40,50
4
11,79
42,60
4
15
16,11
35,50
6
14,66
38,10
3
13,51
40,50
5
10
20,97
36,09
18,23
38,18
16,19
39,88
5
23,34
33,56
20,88
35,85
18,02
37,71
0
25,74
30,96
22,35
33,42
19,86
35,45
-5
28,16
28,27
24,45
30,92
21,73
32,11
-10
30,61
25,51
26,58
28,34
23,62
30,67
-15
33,09
22,67
28,73
25,67
25,54
28,16
LTHW 80 / 60°C
20
18,27
43,60
8
16,59
46,60
6
15,25
49,20
6
15
20,34
40,80
9
18,47
44,20
8
16,98
47,00
7
10
25,61
41,86
22,22
44,36
19,72
47,40
5
28,00
39,26
24,29
41,94
21,56
44,14
0
30,42
36,58
26,38
39,45
23,42
41,80
-5
32,86
33,83
28,50
36,87
25,31
39,37
-10
35,33
30,99
30,65
34,22
27,22
36,86
-15
37,83
28,07
32,83
31,48
29,16
34,27
LTHW 90 / 70°C
20
22,40
49,00
11
20,30
53,00
9
18,70
56,00
8
15
24,50
46,00
12
22,30
50,00
10
20,50
53,00
9
10
30,20
47,57
26,17
50,48
23,21
52,84
5
32,61
44,90
28,26
47,99
25,07
50,51
0
35,05
42,15
30,38
45,43
26,95
48,10
-5
37,51
39,33
32,53
42,78
28,86
45,61
-10
40,01
36,42
34,70
40,05
30,90
43,03
-15
42,54
33,43
36,90
37,24
32,17
40,36

13
LH330
Max. fan speed
Med. fan speed
Min. fan speed
Air flow rate
m³/h
3.400
2.000
1.350
Fan speed rpm
1/min
700 –900 - 1400
Electrical power
W
130
Electr.power supply
V
230
Max. electr. current
A
Max. 0,58
Weight
kg
27
Water flow rate
l
12,2
Connection
inch
1
Noise level
dB(A)
53
49
43
Heating medium
tl1
°C
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
LTHW 50 / 40°C
20
13,50
32,00
8
10,50
36,00
5
8,30
38,00
3
15
16,60
29,00
11
12,80
34,00
7
10,30
37,00
5
10
22,42
28,87
15,64
32,37
11,76
34,92
5
25,93
26,46
18,08
30,43
13,59
33,33
0
29,48
23,98
20,55
28,42
15,45
31,66
-5
33,07
31,43
23,06
26,33
17,34
29,91
-10
36,70
18,81
25,60
24,16
19,26
28,07
-15
40,38
16,10
28,19
21,91
21,22
26,16
LTHW 60 / 40°C
20
14,03
32,30
2
10,53
35,60
1
8,41
38,50
1
15
17,98
30,40
4
13,45
34,60
2
10,60
37,90
1
10
24,41
30,71
17,32
34,78
13,11
37,77
5
28,18
28,32
19,81
32,88
14,99
36,24
0
31,77
25,85
22,33
30,88
16,88
34,60
-5
35,40
23,29
24,87
28,79
18,81
32,86
-10
39,06
20,66
27,43
26,60
20,75
31,02
-15
42,76
17,94
30,04
24,33
22,73
29,09
LTHW 70 / 50°C
20
21,56
38,80
5
16,87
45,10
3
13,36
49,40
2
15
24,71
36,20
6
19,30
43,20
4
15,56
48,70
3
10
31,71
36,68
22,22
41,79
16,78
45,55
5
35,28
34,20
24,72
39,78
18,66
43,89
0
38,89
31,64
27,24
37,68
20,57
42,14
-5
42,54
29,01
29,81
35,50
22,50
40,30
-10
46,24
26,29
32,40
33,23
24,47
38,37
-15
49,98
23,49
35,04
30,88
26,47
36,35
LTHW 80 / 60°C
20
27,97
44,40
7
21,72
52,30
5
17,46
58,40
3
15
31,14
41,80
9
24,18
50,30
6
19,42
57,00
4
10
38,69
42,55
27,03
48,67
20,36
53,15
5
42,29
40,00
29,55
46,58
22,26
51,40
0
45,93
37,37
32,10
44,40
24,19
49,57
-5
42,62
34,66
34,69
42,14
26,15
47,65
-10
53,34
31,87
37,32
39,80
28,15
45,64
-15
57,12
28,99
39,99
37,36
30,18
43,54
LTHW 90 / 70°C
20
34,30
50,00
10
26,50
60,00
7
21,30
67,00
5
15
37,40
47,00
12
28,90
58,00
8
23,30
65,00
5
10
45,62
48,39
31,79
55,47
23,90
60,65
5
49,25
45,76
34,33
53,31
25,82
58,81
0
52,93
43,06
36,92
51,06
27,77
56,90
-5
56,65
40,28
39,54
48,73
29,76
54,90
-10
60,42
37,42
42,21
46,31
31,78
52,82
-15
64,24
34,48
44,91
43,81
33,84
50,64

14
LH430
Max. fan speed
Med. fan speed
Min. fan speed
Air flow rate
m³/h
2.650
Fan speed rpm
1/min
700 –900 –1400
Electrical power
W
200
Electr.power supply
V
230
Max. electr. current
A
Max. 0,90
Weight
Kg
32
Water flow rate
L
14,2
Connection
inch
1
Noise level
dB(A)
53
49
43
Heating medium
tl1
°C
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
LTHW 50 / 40°C
20
15,80
32,00
5
13,00
35,00
4
27,70
64,00
3
15
19,40
30,00
8
16,20
33,00
6
30,30
62,00
4
10
26,00
29,07
20,02
31,61
15,49
33,95
5
30,01
26,73
23,16
29,60
17,92
32,26
0
34,24
24,28
26,35
27,51
20,38
30,48
-5
38,43
21,78
29,58
25,34
22,89
28,62
-10
42,67
19,20
32,86
23,09
25,43
26,68
-15
46,97
16,54
36,19
20,76
28,02
24,66
LTHW 60 / 40°C
20
15,39
31,70
2
12,54
34,10
1
10,32
36,60
1
15
20,14
30,10
2
16,27
32,90
2
13,17
35,80
1
10
28,41
30,84
22,04
33,79
17,14
36,51
5
32,58
28,51
25,24
31,81
19,64
34,87
0
36,78
26,09
28,48
29,73
22,15
33,13
-5
41,01
23,58
31,75
27,56
24,70
31,28
-10
45,28
20,98
35,05
25,30
22,28
29,35
-15
49,61
18,31
38,40
22,94
29,69
27,31
LTHW 70 / 50°C
20
25,18
39,20
3
21,10
43,70
3
16,97
47,30
2
15
28,89
36,60
4
24,18
41,60
3
19,90
46,40
2
10
36,76
36,97
28,38
40,64
22,03
44,07
5
40,94
34,54
31,10
38,56
24,52
42,30
0
45,15
32,02
34,86
36,39
27,04
40,44
-5
49,40
29,43
38,16
34,13
29,61
38,49
-10
55,71
26,75
41,50
31,79
32,21
36,46
-15
58,07
23,99
44,88
29,36
34,65
34,33
LTHW 80 / 60°C
20
32,76
45,00
5
27,30
50,60
4
22,53
56,20
3
15
36,50
42,30
6
30,41
48,50
5
25,08
54,60
3
10
44,89
42,93
34,62
47,20
26,82
51,48
5
49,10
40,43
37,86
45,20
29,33
49,62
0
53,53
37,84
41,14
42,95
31,88
47,68
-5
57,65
35,18
44,47
40,61
34,48
45,65
-10
62,01
32,43
47,85
38,19
37,12
43,54
-15
66,42
29,60
51,28
35,68
39,80
41,43
LTHW 90 / 70°C
20
40,20
51,00
7
33,40
58,00
5
10,50
37,00
4
15
44,00
48,00
9
36,60
55,00
6
13,30
36,00
4
10
52,97
48,86
40,78
54,03
31,55
58,79
5
57,21
46,28
44,05
51,78
34,09
56,86
0
61,50
43,62
47,38
49,45
36,68
54,84
-5
65,85
40,89
50,75
47,04
39,30
52,74
-10
70,25
38,07
54,16
44,54
41,90
50,55
-15
74,71
35,17
57,63
41,95
44,70
48,27

15
LH 530
Max. fan speed
Med. fan speed
Min. fan speed
Air flow rate
m³/h
4.900
3.150
2.200
Fan speed rpm
1/min
700 –900 - 1400
Electrical power
W
220
Electr.power supply
V
230
Max. electr. current
A
Max. 1,95
Weight
kg
35,7
Water flow rate
l
16,2
Connection
inch
1¼
Noise level
dB(A)
53
49
47
Heating medium
tl1
°C
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
LTHW 50 / 40°C
20
19,40
32,00
6
15,70
35,00
4
12,70
37,00
3
15
23,80
29,00
9
19,30
33,00
6
16,00
26,00
5
10
32,19
28,79
23,90
31,70
18,49
34,05
5
37,24
26,39
27,64
29,69
21,38
32,35
0
42,35
23,91
31,43
27,60
24,31
30,57
-5
47,52
21,36
32,27
25,43
27,29
28,72
-10
52,75
18,73
39,17
23,18
30,32
26,78
-15
58,05
16,03
43,13
20,86
33,40
24,76
LTHW 60 / 40°C
20
19,58
31,90
2
15,83
34,50
1
12,55
37,00
1
15
25,39
30,10
3
19,92
33,50
2
16,05
36,30
1
10
35,24
30,58
26,36
33,94
20,51
36,68
5
40,38
28,19
30,18
31,96
23,48
35,04
0
45,56
25,72
34,03
29,89
26,47
33,29
-5
50,78
23,16
37,29
27,72
29,50
31,44
-10
56,04
20,52
41,85
25,45
32,57
29,50
-15
61,38
17,80
45,84
23,11
35,68
27,47
LTHW 70 / 50°C
20
30,90
38,70
4
25,27
43,80
3
20,56
47,80
2
15
35,43
36,10
5
28,94
41,80
4
23,98
46,80
3
10
45,48
36,56
33,91
40,80
26,33
44,24
5
50,63
34,08
37,74
38,71
29,30
42,48
0
55,83
31,52
41,60
36,53
32,30
40,62
-5
61,09
28,88
45,52
34,28
35,35
38,67
-10
66,41
26,17
49,50
31,93
38,45
36,64
-15
71,79
23,37
53,53
29,50
41,59
34,51
LTHW 80 / 60°C
20
40,14
44,30
6
32,63
50,80
4
26,93
56,40
3
15
44,70
41,60
8
36,33
48,70
5
29,97
54,80
4
10
55,55
42,43
41,31
47,32
32,00
51,62
5
60,74
39,88
45,16
45,35
34,99
49,76
0
65,98
37,25
49,07
43,09
38,03
47,82
-5
71,29
34,54
53,03
40,76
41,12
45,79
-10
76,66
31,75
57,05
38,33
44,26
43,68
-15
82,09
28,87
61,14
35,83
47,45
41,48
LTHW 90 / 70°C
20
49,40
50,00
9
39,80
58,00
6
32,90
64,00
4
15
54,00
47,00
10
43,50
56,00
7
36,00
63,00
5
10
65,51
48,21
48,63
54,17
37,62
58,93
5
70,74
45,63
52,52
51,92
40,65
57,00
0
76,03
42,92
56,48
49,60
43,73
54,98
-5
81,39
40,14
60,48
47,19
46,85
52,88
-10
86,82
37,28
64,55
44,69
50,04
50,69
-15
92,32
34,34
68,68
42,10
53,27
48,41

16
LH 630
Max. fan speed
Med. fan speed
Air flow rate
m³/h
6.700
4.250
Fan speed rpm
1/min
700 –900
Electrical power
W
245
Electr.power supply
V
400
Max. electr. current
A
Max. 1,04
Weight
kg
44,4
Water flow rate
l
18,5
Connection
inch
1¼
Noise level
dB(A)
52
46
Heating medium
tl1
°C
Q
kW
tl2
°C
ΔP
kPa
Q
kW
tl2
°C
ΔP
kPa
LTHW 50 / 40°C
20
23,00
31,00
5
19,10
33,00
3
15
28,40
28,00
7
23,90
32,00
5
10
39,25
28,11
30,56
30,57
5
45,47
25,64
35,04
28,44
0
51,76
23,09
40,29
26,23
-5
58,12
20,48
42,25
23,94
-10
64,55
17,78
50,28
21,57
-15
71,07
15,02
55,38
19,12
LTHW 60 / 40°C
20
21,46
30,30
1
17,64
32,30
1
15
28,73
28,50
2
23,38
31,10
1
10
42,61
29,66
33,41
32,49
5
48,93
27,21
38,34
30,38
0
55,30
24,67
43,30
28,19
-5
61,73
22,06
48,32
25,90
-10
68,20
19,35
53,39
23,52
-15
74,75
16,57
58,51
21,05
LTHW 70 / 50°C
20
36,78
37,60
3
31,08
41,70
2
15
42,25
34,90
4
35,78
39,60
3
10
55,30
35,52
43,23
39,10
5
61,63
32,98
48,17
36,90
0
68,02
30,35
53,16
34,60
-5
74,49
27,65
58,20
32,22
-10
81,03
24,87
63,32
29,75
-15
87,64
22,02
68,50
27,21
LTHW 80 / 60°C
20
48,05
43,00
4
40,53
48,30
3
15
53,57
40,20
5
45,17
46,00
4
10
67,77
41,27
52,86
45,58
5
74,15
38,66
57,83,
43,29
0
80,60
35,96
62,86
40,92
-5
87,13
33,19
67,97
38,46
-10
93,72
30,34
73,14
35,92
-15
100,40
27,41
78,39
33,20
LTHW 90 / 70°C
20
59,20
48,00
6
49,70
55,00
5
15
64,70
46,00
7
54,40
53,00
5
10
80,09
46,96
62,36
51,98
5
86,52
44,27
67,38
49,61
0
93,02
41,51
72,47
47,17
-5
99,61
38,66
77,63
44,64
-10
106,27
35,74
82,86
42,03
-15
113,02
32,74
88,17
39,33

17
POSITIONING
The heater installation point must be selected by the
planner or a person qualified to handle such matters: all
technical requirements, standards and laws in force must
be taken into account. Installation of the water-fed fan
heater must be carried out by a company qualified as per
valid law and regulations. You may need to make a
planning application to ensure that you comply with
architectural, fire prevention, and possution prevention
laws. Always obtain the necessary authorisation before
going ahead with installation.
For porper installation always observe the following minimum
requisites:
•Position the unit on a dry level surface capable of sustainingist
weight;
•Ensure that the unit is positioned in such a way as to ensure
proper air flow and allow cleaning and maintenance to becarried
out.
Select the appropriate model on the basis of performance
data for medium or minimum fan speed.
Example of installation in a small room
Example of installation in a large room/ area
Example of vertical installation
Example of celing installation
The shelves can be mounted either above or beneath the unit depending on installation requirement.

26
KIT FOR SHELF INSTALLATION
The shelves can be mounted either above or beneath the unit depending on installation requirement.
To assemble, proceed as follows:
•Drill holes in the walls as per the template;.
•Attach the shelves to the walls using suitable fixing items (not supplied).
•Mount the heater on the shelves and fix in place using the supplied screws and threadedinserts.
Drilling template with shelves applied underneath heater unit.
Typ
LH/X
120
130
220
230
320
330
420
430
520
530
620
630
720
730
920
930
P
489
539
639
689
739
789
1.139
1.339
mm
The diameter of the shelf plate fixing holes is 12 mm.

26
Drilling Template with shelves applied over heater unit
Typ
LH/X
130
230
330
430
530
630
P
489
539
639
689
739
789
mm
The diameter of shelf plate fixing holes is 12mm.
WARNING !
The support shelves are siezed to support one heater
unit only. The Manufacturer cannot be held liable for any
damages, that may result from imporper attachment of
the shelves to the wall.
It is forbidden to climb up on the shelves