REMKO LWM Series User manual

Operating and
installation instructions
Read the instructions prior to performing any task!
REMKO LWM series
LWM 80, LWM 110, LWM 150, LWM 110 Duo, LWM 150 Duo
Monobloc heat pumps
0205-2019-07 Edition 1, en_GB
Instructions for Technicians
Air/water system for heating and cooling

R454B
Refrigerant
Translation of the original
Read these operating instructions carefully before commis-
sioning / using this device!
These instructions are an integral part of the system and must
always be kept near or on the device.
Subject to modifications; No liability accepted for errors or mis-
prints!

Table of contents
1 Safety and usage instructions............................................................................................................. 4
1.1 General safety notes....................................................................................................................... 4
1.2 Identification of notes...................................................................................................................... 4
1.3 Personnel qualifications.................................................................................................................. 4
1.4 Dangers of failure to observe the safety notes................................................................................ 4
1.5 Safety-conscious working............................................................................................................... 5
1.6 Safety notes for the operator........................................................................................................... 5
1.7 Safety notes for installation, maintenance and inspection.............................................................. 5
1.8 Unauthorised modification and changes......................................................................................... 5
1.9 Intended use................................................................................................................................... 5
1.10 Warranty........................................................................................................................................ 6
1.11 Transport and packaging............................................................................................................... 6
1.12 Environmental protection and recycling........................................................................................ 6
2 Technical data........................................................................................................................................ 7
2.1 Unit data.......................................................................................................................................... 7
2.2 Product data.................................................................................................................................. 11
2.3 Unit dimensions of indoor units..................................................................................................... 13
2.4 Diagram, cooling cycle.................................................................................................................. 15
2.5 Heat pump usable limits in monovalent operation........................................................................ 16
2.6 Pump characteristics and circulation pump pressure losses........................................................ 16
2.7 Total sound power level................................................................................................................. 18
2.8 Characteristic curves..................................................................................................................... 21
3 Unit description................................................................................................................................... 31
4Assembly............................................................................................................................................. 35
4.1 System layout................................................................................................................................ 35
4.2 General installation notes.............................................................................................................. 36
4.3 Set-up and assembly of the heat pump........................................................................................ 37
5 Hydraulic connection.......................................................................................................................... 42
6 Emergency-heat operation................................................................................................................. 46
7 Cooling with room temperature/humidity probe.............................................................................. 47
8 Water treatment................................................................................................................................... 48
9 Commissioning the refrigeration system......................................................................................... 50
10 Electrical wiring................................................................................................................................... 52
11 Before commissioning....................................................................................................................... 52
12 Commissioning................................................................................................................................... 53
13 Care and maintenance........................................................................................................................ 54
14 Temporary shutdown.......................................................................................................................... 54
15 Troubleshooting and customer service............................................................................................ 55
16 General view of unit and spare parts................................................................................................ 56
16.1 Exploded view of the unit LWM 80-150....................................................................................... 56
16.2 Spare parts LWM 80-150............................................................................................................ 57
17 General terms...................................................................................................................................... 59
18 Index..................................................................................................................................................... 61
3

1 Safety and
usage instructions
1.1 General safety notes
Carefully read the operating manual before com-
missioning the units or their components for the
first time. It provides useful tips and notes such as
hazard warnings to prevent injury and material
damage. Failure to follow the directions in this
manual can endanger persons, the environment
and the equipment itself or its components and will
void any claims for liability.
Store this manual and the information required for
the operation of this system (e.g. refrigerant data-
sheet) in the vicinity of the unit.
The refrigerant used in the system is flammable. If
applicable, observe the local safety conditions.
Warning of inflammable substances!
1.2 Identification of notes
This section provides an overview of all important
safety aspects for proper protection of people and
safe and fault-free operation.The instructions and
safety notes contained within this manual must be
observed in order to prevent accidents, personal
injury and material damage.
Notes attached directly to the units must be
observed in their entirety and be kept in a fully
legible condition.
Safety notes in this manual are indicated by sym-
bols. Safety notes are introduced with signal words
which help to highlight the magnitude of the danger
in question.
DANGER!
Contact with live parts poses an immediate
danger of death due to electric shock. Damage
to the insulation or individual components may
pose a danger of death.
DANGER!
This combination of symbol and signal word
warns of a situation in which there is immediate
danger, which if not avoided may be fatal or
cause serious injury.
WARNING!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may be fatal or cause
serious injury.
CAUTION!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause injury or mate-
rial and environmental damage.
NOTICE!
This combination of symbol and signal word
warns of a potentially hazardous situation,
which if not avoided may cause material and
environmental damage.
This symbol highlights useful tips and recom-
mendations as well as information for efficient
and fault-free operation.
1.3 Personnel qualifications
Personnel responsible for commissioning, opera-
tion, maintenance, inspection and installation must
be able to demonstrate that they hold a qualifica-
tion which proves their ability to undertake the
work.
1.4 Dangers of failure to observe
the safety notes
Failure to observe the safety notes may pose a risk
to people, the environment and the units. Failure to
observe the safety notes may void any claims for
damages.
REMKO LWM series
4

In particular, failure to observe the safety notes
may pose the following risks:
nThe failure of important unit functions.
nThe failure of prescribed methods of mainte-
nance and repair.
nDanger to people on account of electrical and
mechanical effects.
1.5 Safety-conscious working
The safety notes contained in this manual, the
existing national regulations concerning accident
prevention as well as any internal company
working, operating and safety regulations must be
observed.
1.6 Safety notes for the operator
The operational safety of the units and compo-
nents is only assured providing they are used as
intended and in a fully assembled state.
nThe units and components may only be set up,
installed and maintained by qualified per-
sonnel.
nProtective covers (grille) over moving parts
must not be removed from units that are in
operation.
nDo not operate units or components with
obvious defects or signs of damage.
nContact with certain unit parts or components
may lead to burns or injury.
nThe units and components must not be
exposed to any mechanical load, extreme
levels of humidity or extreme temperature.
nSpaces in which refrigerant can leak sufficient
to load and vent. Otherwise there is danger of
suffocation.
nAll housing parts and device openings, e.g. air
inlets and outlets, must be free from foreign
objects, fluids or gases.
nThe units must be inspected by a service tech-
nician at least once annually. Visual inspec-
tions and cleaning may be performed by the
operator when the units are disconnected from
the mains.
1.7 Safety notes for
installation, maintenance and
inspection
nAppropriate hazard prevention measures must
be taken to prevent risks to people when per-
forming installation, repair, maintenance or
cleaning work on the units.
nThe setup, connection and operation of the
units and its components must be undertaken
in accordance with the usage and operating
conditions stipulated in this manual and comply
with all applicable regional regulations.
nRegional regulations and laws as well as the
Water Ecology Act (WHG) must be observed.
nOnly install and store the units in rooms larger
than 4 m2. With a failure to comply, leaks may
result in the room filling with a flammable mix-
ture! The minimum room size of 4 m2 required
for installation and storage pertains to the basic
fill quantity of the unit. This varies according to
the installation type and total fill quantity of the
system. The calculation must take place in
accordance with valid DIN standards. Make
sure that the installation site is suitable for safe
unit operation.
nThe electrical power supply should be adapted
to the requirements of the units.
nUnits may only be mounted at the points pro-
vided for this purpose at the factory. The units
may only be secured or mounted on stable
structures, walls or floors.
nMobile units must be set up securely on suit-
able surfaces and in an upright position. Sta-
tionary units must be permanently installed for
operation.
nThe units and components should not be oper-
ated in areas where there is an increased risk
of damage. Observe the minimum clearances.
nThe units and components must be kept at an
adequate distance from flammable, explosive,
combustible, abrasive and dirty areas or
atmospheres.
nSafety devices may not be modified or
bypassed.
1.8 Unauthorised modification
and changes
Modifications or changes to units and components
are not permitted and may cause malfunctions.
Safety devices may not be modified or bypassed.
Original replacement parts and accessories
authorised by the manufactured ensure safety. The
use of other parts may invalidate liability for
resulting consequences.
1.9 Intended use
Depending on the model, the equipment and the
additional fittings with which it is equipped is only
intended to be used as an air-conditioner for the
purpose of cooling or heating the air in an
enclosed room.
Any different or additional use shall be classed as
non-intended use. The manufacturer/supplier
assumes no liability for damages arising from such
use. The user bears the sole risk in such cases.
Intended use also includes working in accordance
with the operating and installation instructions and
complying with the maintenance requirements.
5

Under no circumstances should the threshold
values specified in the technical data be exceeded.
1.10 Warranty
For warranty claims to be considered, it is essential
that the ordering party or its representative com-
plete and return the "certificate of warranty" to
REMKO GmbH & Co. KG at the time when the
units are purchased and commissioned.
The warranty conditions are detailed in the "Gen-
eral business and delivery conditions". Further-
more, only the parties to a contract can conclude
special agreements beyond these conditions. In
this case, contact your contractual partner in the
first instance.
1.11 Transport and packaging
The devices are supplied in a sturdy shipping con-
tainer. Please check the equipment immediately
upon delivery and note any damage or missing
parts on the delivery and inform the shipper and
your contractual partner. For later complaints can
not be guaranteed.
WARNING!
Plastic films and bags etc. are dangerous
toys for children!
Why:
- Leave packaging material are not around.
- Packaging material may not be accessible to
children!
1.12 Environmental protection
and recycling
Disposal of packaging
All products are packed for transport in environ-
mentally friendly materials. Make a valuable contri-
bution to reducing waste and sustaining raw mate-
rials. Only dispose of packaging at approved
collection points.
Disposal of equipment and components
Only recyclable materials are used in the manufac-
ture of the devices and components. Help protect
the environment by ensuring that the devices or
components (for example batteries) are not dis-
posed in household waste, but only in accordance
with local regulations and in an environmentally
safe manner, e.g. using certified firms and recy-
cling specialists or at collection points.
REMKO LWM series
6

2 Technical data
2.1 Unit data
Series LWM 80 LWM 110 LWM 150
Function Heating or Cooling
System Air/water
Heat pump manager Smart Control Touch
Drinking water tank enamelled optional
Auxiliary heater installed/rated output kW optional 7.5
Domestic hot-water heating (change-
over valve)
optional
Connection oil/gas boiler changeover
valve optional
Heating capacity min./max. kW 0.6-8.0 2.0-10.7 3.0-14.5
Heating capacity/COP 1)
with A12/W35 kW/COP 7.5/5.65 9.18/5.57 11.0/5.58
with A7/W35 kW/COP 6.25/5.10 8.04/5.02 10.28/5.03
with A2/W35 kW/COP 4.33/4.09 6.35/4.04 8.33/4.11
with A-7/W35 kW/COP 3.82/3.55 5.57/3.42 7.85/3.57
with A-15/W35 kW/COP 2.6/2.95 4.47/2.82 6.5/2.97
with A7/W45 kW/COP 6.05/3.96 7.87/3.88 10.09/3.89
with A-7/W45 kW/COP 3.73/2.96 5.51/2.83 7.76/2.98
with A7/W55 kW/COP 5.68/3.20 7.50/3.12 9.72/3.13
with A-7/W55 kW/COP 3.64/2.49 5.42/2.36 7.67/2.51
with A10/W35 kW/COP 6.80/5.43 8.55/5.31 10.60/5.32
Cooling capacity min./max. kW 1.1-8.9 3.3-11.9 5.5-14.0
Cooling capacity/EER 2)
with A35/W7 kW/EER 4.90/2.81 7.63/2.73 12.20/2.65
with A35/W18 kW/EER 5.70/3.61 8.24/3.71 12.77/3.81
with A27/W18 kW/EER 5.80/3.92 10.71/4.00 18.20/4.11
Usable limits, heating °C -23 to +37
Service limits, cooling °C +15 to +45
Inlet temperature, heating water, max. °C 65
Min. inlet temperature for cooling °C 7
Heat pump power supply V/Ph/Hz 230/1~/50 400/3~/50
Electrical heating element power supply
(Smart Serv) V/Ph/Hz 400/3~/50
Control board power supply V/Ph/Hz 230/1~/50
7

Series LWM 80 LWM 110 LWM 150
Heater for anti-freeze protection power
supply (optional) V/Ph/Hz 230/1~/50
Max. current consumption per phase A 5.8 4.7 6.6
Rated current consumption for A7/W35 A 5.30 2.57 3.27
Rated power consumption for A7/W35 kW 1.22 1.60 2.04
Rated power consumption for A2/W35 kW 1.06 1.57 2.03
Max. power consumption kW 1.3 3.2 4.5
Power factor at A7/W35 (cosφ) -- 0.9
Customer-provided electrical protection A slow-
acting 16 3 x 20
Refrigerant R454B 3)
Refrigerant, basic capacity kg 1.3 1.4 1.6
Medium flow rate
water(according to EN 14511, at ∆t 5 K) m3/h 1.1 1.4 1.6
Pressure loss (heating system), outdoor kPa 80 70 60
Max. airflow volume m3/h 3000 3500 4000
Max. operating pressure, water bar 3
Hydraulic connection,
inlet/return flow (flat-sealing) Inches (DN) 1 1/4 (32)
Recommended diameter for copper
piping to be used by the customer mm 28
Max. sound power level in acc. with
DIN EN 12102:2008-09 and ISO 9614-2 dB(A) 54 56 58
Sound pressure level, LpA 4) dB(A) 32 34 36
Tonality dB(A) 0
Sound power level/sound pressure
levelnight operations/lowering mode dB(A) 47/25 49/27 51/29
Dimensions (height/width/depth) mm 1600 x 1000 x 850
Enclosure class -- IP X4
Weight kg 200 220
1) COP = coefficient of performance in accordance with EN 14511, VDE tested, rated compressor frequency
60 Hz
2) EER = energy efficiency ratio in accordance with EN 14511, rated compressor frequency 60 Hz
3) Contains greenhouse gas according to Kyoto protocol, GWP 466
4) Distance 5 m, VDE tested, A7/W55, with half-spherical propagation
Information provided without guarantee! We reserve the right to make technical changes within the frame-
work of technical advancement.
REMKO LWM series
8

Series LWM 110 Duo LWM 150 Duo
Function Heating or Cooling
System Air/water
Heat pump manager Smart Control Touch
Drinking water tank enamelled optional
Auxiliary heater/rated output per heat pump kW 7.5
Domestic hot-water heating (changeover valve) optional
Connection oil/gas boiler optional
Heating capacity min./max. kW 2.0-21.4 3.0-29.0
Heating capacity/COP 1)
with A12/W35 kW/COP 18.36/5.57 22.00/5.58
with A7/W35 kW/COP 16.08/5.02 20.56/5.03
with A2/W35 kW/COP 12.70/4.04 16.66/4.11
with A-7/W35 kW/COP 11.14/3.42 15.70/3.57
with A-15/W35 kW/COP 8.94/2.82 13.00/2.97
with A7/W45 kW/COP 15.74/3.88 20.18/3.89
with A-7/W45 kW/COP 11.02/2.83 15.52/2.98
with A7/W55 kW/COP 15.00/3.12 19.44/3.13
with A-7/W55 kW/COP 10.84/2.36 15.34/2.51
with A10/W35 kW/COP 17.10/5.31 21.20/5.32
Cooling capacity min./max. kW 3.3-23.8 5.5-28.0
Cooling capacity/EER 2)
with A35/W7 kW/EER 15.26/2.65 24.40/2.65
with A35/W18 kW/EER 16.48/3.71 25.54/3.81
with A27/W18 kW/EER 21.42/4.00 36.08/4.11
Usable limits, heating °C -23 to +37
Service limits, cooling °C +15 to +45
Inlet temperature, heating water, max. °C 65
Min. inlet temperature for cooling °C 7
Power supply per heat pump V/Ph/Hz 400/3~/50
Power supply per electrical heating element
(Smart Serv) V/Ph/Hz 400/3~/50
Power supply per control board V/Ph/Hz 230/1~/50
Power supply per heater for anti-freeze protection
(optional) V/Ph/Hz 230/1~/50
Max. current consumption per phase and heat pump A 4.7 6.6
Rated current consumption for A7/W35 per heat pump A 2.57 3.27
9

Series LWM 110 Duo LWM 150 Duo
Rated power consumption for A7/W35 kW 1.60 2.04
Rated power consumption for A2/W35 per heat pump kW 1.57 2.03
Max. power consumption per heat pump kW 3.2 4.5
Power factor at A7/W35 (cosφ) per heat pump -- 0.9
Fuse protection provided by the customer per heat pump A slow-
acting 3 x 20
Refrigerant R454B 3)
Max. refrigerant basic filling quantity per heat pump kg 1.4 1.6
Medium flow rate water(according to EN 14511, at ∆t 5 K)
per heat pump m3/h 1.4 1.6
Outdoor pressure loss (heating system) per heat pump kPa 70 60
Max. airflow volume per heat pump m3/h 2x3500 2x4000
Max. water operating pressure per heat pump bar 3
Hydraulic connection inlet/return flow, flat-sealing
per heat pump Inches (DN) 1 1/4 (32)
Copper collector line diameter
to be used by the customer per heat pump mm 42
Max. sound power level in acc. with
DIN EN 12102:2008-09 and ISO 9614-2per heat pump dB(A) 56 58
Sound pressure level LpA 4)per heat pump dB(A) 34 36
Tonality dB(A) 0
Sound power level/sound pressure
levelnight operations/lowering mode per heat pump dB(A) 49/27 51/29
Dimensions per heat pump (height/width/depth) mm 1600 x 1000 x 850
Enclosure class -- IP X4
Weight per heat pump kg 200 220
1) COP = coefficient of performance in accordance with EN 14511, VDE tested, rated compressor frequency
60 Hz
2) EER = energy efficiency ratio in accordance with EN 14511, rated compressor frequency 60 Hz
3) Contains greenhouse gas according to Kyoto protocol, GWP 466
4) Distance 5 m, VDE tested, A7/W55, with half-spherical propagation
Information provided without guarantee! We reserve the right to make technical changes within the frame-
work of technical advancement.
REMKO LWM series
10

2.2 Product data
Average condition 1)
Series LWM 80 LWM 110 LWM 150
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 5 7 10
Room heating energy efficiency hs 35°C/55°C % 161/136 161/142 164/138
Contribution to the seasonal room heating
energy efficiency of the REMKO Smart-Control % 4
Yearly energy consumption QHE 35°C/ 55°C 4) 2629/3173 3395/3797 4588/5780
Sound power level LWAdB(A) 56 58 60
Warmer condition 2)
Series LWM 80 LWM 110 LWM 150
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 4 6 8
Room heating energy efficiency hs 35°C/55°C % 182/160 187/167 169/164
Yearly energy consumption QHE 35°C/ 55°C 4) 1326/1379 1668/1638 2550/2537
Colder condition 3)
Series LWM 80 LWM 110 LWM 150
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 7 9 13
Room heating energy efficiency hs 35°C/55°C % 147/114 145/122 148/120
Yearly energy consumption QHE 35°C/ 55°C 4) 4158/6135 5485/7278 7319/10700
1) Average condition = Moderate temperature periods
2) Warmer condition = Warm temperature periods
3) Colder condition = Cold temperature periods
4) The specified value is based on results from standard testing.
The actual consumption depends on the use and location of the unit
11

Average condition 1)
Series LWM 110 Duo LWM 150 Duo
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 14 20
Room heating energy efficiency hs 35°C/55°C % 161/142 164/138
Contribution to the seasonal room heating
energy efficiency of the REMKO Smart-Control % 4
Yearly energy consumption QHE 35°C/ 55°C 4) 6790/7594 9176/11560
Sound power level LWA per heat pump dB(A) 58 60
Warmer condition 2)
Series LWM 110 Duo LWM 150 Duo
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 12 16
Room heating energy efficiency hs 35°C/55°C % 187/167 169/164
Yearly energy consumption QHE 35°C/ 55°C 4) 3336/3276 5100/5074
Colder condition 3)
Series LWM 110 Duo LWM 150 Duo
Energy efficiency ratio, heating 35°C/55°C A++/A++
Nominal heating power P rated kW 18 26
Room heating energy efficiency hs 35°C/55°C % 145/122 148/120
Yearly energy consumption QHE 35°C/ 55°C 4) 10970/14556 14638/21400
1) Average condition = Moderate temperature periods
2) Warmer condition = Warm temperature periods
3) Colder condition = Cold temperature periods
4) The specified value is based on results from standard testing.
The actual consumption depends on the use and location of the unit
REMKO LWM series
12

2.3 Unit dimensions of indoor units
Unit dimensions
40+20
840
934
1600
845
985
40 180
110140
180
130
734
700
AC
B
Fig. 1: Unit dimensions (all dimensions in mm)
A: Front view
B: Bird´s eye view
C: Side view
13

Designations of the pipe connections
845
985
40 180
110140
180
130
2
1
4
3
2
3
A
B
a
b
b
a
0
31 71
111 76 181 221 199
153
0
57
106
166 113
262
377
Fig. 2: Designations of the pipe connections
A: Rear view
B: Bird´s eye view
1: Condensate drain
2: Inlet heat pump 1 1/4"
3: Return flow heat pump 1 1/4"
4: Cable inlets
a: Air inlet
b: Air outlet
REMKO LWM series
14

2.4 Diagram, cooling cycle
2
1
4
38
9
14
13
15
16
17
18 19 20
6
5
7
12
EEV
10
11
Fig. 3: Diagram, cooling cycle
1: Refrigerant dryer
2: Refrigerant inspection glass
3: Electr. expansion valve
4: Finned heat exchanger air suction probe
5: Finned heat exchanger fan
6: Finned heat exchanger air outlet probe
7: Refrigerant probe suction-side
8: Low pressure switch
9: Compressor
10: Refrigerant collector
11: Hot gas probe/Suction gas probe
12: High pressure switch 45 bar
13: 4-way changeover valve
14: Safety valve
15: Water outlet probe/Heat pump inlet
16: Smart Serv 7.5 kW
17: Manual bleeder valve
18: Water outlet probe/Heat pump return flow
19: Cap valve
20: Circulation pump
15

2.5 Heat pump usable limits in monovalent operation
A
B
-23°C; 45°C
-7°C; 65°C
37°C; 60°C
37°C; 35°C
-23°C; 24°C
20
25
30
35
40
45
50
55
60
65
70
-30 -20 -10 0 10 20 30 40
Fig. 4: Usable limits LWM
A: Outside temperature [°C] B: Heating water inlet temperature [°C]
Outside temperature [°C] -23 -23 -7 37 37
Inlet temperature [°C] 24 45 65 60 35
2.6 Pump characteristics and circulation pump pressure losses
Fig. 5: Capacity range of the UPMXL 25-125
p: Power consumption [kPa]
H: Delivery height [m]
Q: Requirement [l/s or m3/h ]
External control via analogue-In PWM signal. The tolerances of each curve are in acc. with EN 1151-1:2006
REMKO LWM series
16

Stage Effective power consumption [W] Current consumption [A] Motor protection
min. 7 0.07 blocking current
resistant
max. 136 1.03 blocking current
resistant
Technical data
Pump type Grundfos UPMXL 25-125
Installation length mm 180
Connecting threads Inche
s
R 1 / G 1 1/2
Control signal
Internally controlled via PP/CP/CC -
Digital bidirectional
low voltage PWM signal l
Power supply voltage+ 10/- 15 % 50 Hz V 1 x 230 V
The heating system must be dimensioned in such a way that at least the nominal heating water flow rate can
be achieved with the residual head of the circulation pump.
Residual head LWM
Series LWM 80 LWM 110 LWM 150
Nomin. 1) heating water throughput per heat pump m3/h 1.1 1.4 1.6
Residual head 2) per heat pump kPa 80 70 60
3-way changeover valve pressure loss 3) kPa 7 8 10
Spread K 5 5 5
1) Nominal volume flow rates according to DIN EN 14511, for efficient and safe operation do not fall below the
nominal value.
2) Residual head with pumps according to accessories (without pressure loss of the 3-way changeover valve)
3) REMKO changeover valve DN 25
The pipe dimensions from the heat pump to the on-site hydraulic connection must be designed according to
the design medium flow rate.
The minimum diameter is DN 25.
Heat pump pipe length to on-site hydraulic system 1-13 m 13-20 m
Duo collector
line
Smooth pipe with inside diameter DN 25 DN 32 DN 40 *)
*) The copper pipe of the Duo variant collector line must have an inside diameter of at least 42 mm.
In the case of metal composite pipes, the higher individual resistances of the fittings mean that a design with
residual head must be carried out.
17

2.7 Total sound power level
LWM 80
0,0
10,0
20,0
30,0
40,0
50,0
60,0
100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
A
B
2
1
3
Fig. 6: Total sound power level LP
A: Sound power level LwAre 1pW [dB(A)]
B: Frequency [Hz]
1: Nominal/max. A7/W55
2: Night mode 60% A7/W55
3: A total [dB(A)]
Middle frequency [Hz] 100 125 160 200 250 315 400 500 630 800 1000
Nominal/max.
A7/W55 [dBA] 30.6 39.6 40.6 42.4 41.3 38.9 39.2 39.2 40.4 45.5 45.4
Night mode 60%
A7/W55 [dBA] 30.9 29.8 33.8 34.1 31.5 31.9 31.6 31.4 31.2 36.2 42.7
Middle frequency [Hz] 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 A total
Nominal/max.
A7/W55 [dBA] 42.4 41.1 39.6 40.7 38.9 37.9 38.8 41.0 34.1 32.0 53.9
Night mode 60%
A7/W55 [dBA] 30.6 33.4 31.6 31.9 32.1 30.2 31.8 33.4 28.0 26.3 47.1
The sound power conforms to accuracy class 2.
The standard deviation of the aforementioned A-valued sound power levels amounts to 1.5 dB.
REMKO LWM series
18

LWM 110/LWM 110 Duo
A
B
2
1
3
0,0
10,0
20,0
30,0
40,0
50,0
60,0
100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
Fig. 7: Total sound power level LP
A: Sound power level LwAre 1pW [dB(A)]
B: Frequency [Hz]
1: Nominal/max. A7/W55
2: Night mode 60% A7/W55
3: A total [dB(A)]
Middle frequency [Hz] 100 125 160 200 250 315 400 500 630 800 1000
Nominal/max.
A7/W55 [dBA] 32.6 41.6 42.6 44.4 43.3 40.9 41.2 41.2 42.4 47.5 47.4
Night mode 60%
A7/W55 [dBA] 32.9 31.8 35.8 36.1 33.5 33.9 33.6 33.4 33.2 38.2 44.7
Middle frequency [Hz] 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 A total
Nominal/max.
A7/W55 [dBA] 44.4 43.1 41.5 42.7 40.9 39.6 40.8 43.0 36.1 34.0 55.9
Night mode 60%
A7/W55 [dBA] 32.6 35.4 33.6 33.9 34.1 32.2 33.8 35.4 30.0 28.3 49.1
The sound power conforms to accuracy class 2.
The standard deviation of the aforementioned A-valued sound power levels amounts to 1.5 dB.
19

LWM 150/LWM 150 Duo
A
B
3
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000
2
1
Fig. 8: Total sound power level LP
A: Sound power level LwAre 1pW [dB(A)]
B: Frequency [Hz]
1: Nominal/max. A7/W55
2: Night mode 60% A7/W55
3: A total [dB(A)]
Middle frequency [Hz] 100 125 160 200 250 315 400 500 630 800 1000
Nominal/max.
A7/W55 [dBA] 34.6 43.6 44.6 46.4 45.2 42.9 43.2 43.2 44.4 49.5 49.4
Night mode 60%
A7/W55 [dBA] 34.9 33.8 37.8 38.1 35.3 35.9 35.6 35.4 35.2 36.2 46.7
Middle frequency [Hz] 1250 1600 2000 2500 3150 4000 5000 6300 8000 10000 A total
Nominal/max.
A7/W55 [dBA] 46.4 45.1 43.5 44.7 42.9 41.6 42.8 45.0 38.1 36.0 57.9
Night mode 60%
A7/W55 [dBA] 34.6 37.4 35.6 35.9 36.1 34.2 35.8 37.4 32.0 30.8 51.1
The sound power conforms to accuracy class 2.
The standard deviation of the aforementioned A-valued sound power levels amounts to 1.5 dB.
REMKO LWM series
20