Heat pump package LWM 12 / WP-Kombi Set 4A, double tank enameled 300/100

The Solarbayer air-to-water heat pump
LWM 12 (12kW / 400V) is a compact all-in-one
device for outdoor installation. The system
controller with capacitive touch operation
enables monoenergetic and bivalent operation
with an individually adjustable bivalence
point for requesting an additional heat
generator (e.g. oil/gas heating). Equipped
with high-efficiency pump and fully hermetic
inverter-controlled scroll compressor. All
hydraulic components such as circulation pump,
external expansion vessel, safety and vent
valve, flow sensor as well as an integrated
backup heater and condensate tray heater are
fitted as standard. The refrigerant circuit
is fully integrated into the outdoor unit so
that no additional refrigerant pipes are
required. This solution is compact, easy to
install and saves space inside the building.

Further features:
- Integrated WiFi module enables remote
access and control via APP
- Energy efficiency display: Integration of
an energy efficiency display
via the app to make energy consumption
transparent and comprehensible
comprehensible
- Weather-compensated operation: Variable
flow temperature through a 3-way
mixing valve and an electro
thermal actuator possible
- Single-circuit solar differential control
- Cascade operation possible
- Smart Grid interface (SG Ready)
for the utilisation of regenerative
surplus electricity to increase the
setpoint to 55°C* in hot water mode
(*increase to max. 70° possible with
optional heating element in the cylinder)

Technical data:
Nominal output: 12 kW
Additional electric heater: 9 kW
Mains voltage: 400 V / 3 Ph / 50 Hz
Operating current: 10 A (*23 A)
Fuse protection: 16 A (*29 A)
*(including additional heater)
Height/width/depth: 865 x 1385 x 523 mm
Weight: 163 kg
Connection thread: 2x DN32 (1 1/4")
Refrigerant: R32 (1.75 kg)

Heat output (A7/W35): 12,10 kW
Heating capacity (A2/W35): 9,20 kW
Heating capacity (A-7/W35): 10,0 kW
Power consumption (A7/W35): 2,44 kW
Power consumption (A2/W35): 2,36 kW
Power consumption(A-7/W35): 3,33 kW
COP(A7/W35): 4,95
COP(A2/W35): 3,90
COP(A-7/W35): 3,00

Sound pressure level heating:
Nominal LP: 53.5 dB(A)
(at 1m distance, 1.5m height)

Operating range (outside temperature):
Heating: -25 ... +35°C
Hot water: -25 ... + 43°C
Application range (water side):
Heating: +12 ... +65°C
Hot water: +12 ... +65°C

Energy efficiency class according to
EU Regulation No. 811/2013
Low temperature application (W35): A+++
Medium temperature application (W55): A++

Seasonal space heating
Energy efficiency ETAs according to
Eco Design Guideline for
average climate conditions
ETAs(W35): 189,3%
ETAs(W55): 135,1%

Further data in product data sheet according to
Regulation (EU) No.811/2013, No.812/2013

Heat pump combination tank WP-KOMBI with
integrated enamelled domestic hot water
(DHW) tank with 260 litres and heating/
cooling buffer tank with 94 litres. The
double-wound XXL high-performance heat
exchanger in the DHW cylinder ensures
very efficient heat transfer, minimal
pressure loss and a high hot water
performance. The two-layer enamelling,
protected by a magnesium protective
anode, is durable and highly resistant.
Cleaning flange, circulation connection,
thermometer and sensor connection as
standard. Connection for immersion
heater when replacing the flange plate
possible. With the buffer tank at the
bottom, also with a connection for an
immersion heater, this tank is a compact
all-in-one solution. The tank acts as a
hydraulic separator for the heat pump
and can be used for both heating and
cooling. The high-quality diffusion-
tight insulation ensures minimal energy
losses.

Technical data:
height with insulation: 1695 mm
tilted height: 1840 mm
diameter with insulation: 700 mm
weight: 149 kg
material: steel S235JR

DHW cylinder:
nominal volume: 260 litres
corrosion protection inside: enamelled
max. operating pressure: 10 bar
max. operating temperature: 95 °C
heating surface double coil: 3.2 m²
capacity double coil: 18.5 litres
max. operating pressure coil: 10 bar
max. operating temperature coil: 110 °C

Buffer tank:
nominal volume: 94 litres
max. operating pressure: 3 bar
max. operating temperature: 95 °C
min. operating temperature: -7 °C

Connections DHW cylinder:
heat exchanger: 2x DN32 (1 1/4")
sensor sleeve: 1x DN15 (1/2")
thermometer: 1x DN15 (1/2"), pre-inst.
DHW: 2x DN32 (1 1/4")
circulation: 1x DN25 (1")
anode: 1x DN32 (1 1/4"), pre-installed
flange*: 180/110 mm / bolt circle 145 mm
*max. length immersion heater: 450 mm

Connections buffer tank:
heating: 4x DN25 (1")
sensor: 1x DN15 (1/2")
immersion heater: 1x DN40 (1 1/2")
*max. length immersion heater: 600 mm

Thermal insulation:
material: PU solid foam
lambda λ: 0.0235 W/(mK)
thickness: 50 mm +/- 10%
protective sheath: PVC foil silver
fire protection class according to
DIN 4102 for the complete insulation: B2
Standby energy consumption according to
DIN EN 12897:2020-05: 1.848 kWh/24h
standing heat loss: 77 W
energy efficiency class: C

ATTENTION:
yearly maintenance of anode,
retighten flange

Solarbayer 3-way changeover valve,
230V, with spring return function,
ideal for solarplants using more buffer tanks
or as function of return flow boost for the
heating support of oil-/gasboilers.
nominal diameter DN25, completewith
screw joints DN25 (1") x DN20 (3/4")
and blankets,
high flow rate of 12 m³/h, suitable
for glycol mixtures

technical specification:
connection: DN20 (3/4")
max. operating temperature: 110°C
max. operating pressure: 10 bar
input power: 5-6W
nominal voltage: 230 V, 50Hz
protection: IP20 IEC-norm 529
Rif. european norm CEI EN 60529

The boiler safety unit KS25
for boiler sizes up to 50 kW
is used for displaying
the pressure, de-airing and for the
safeguarding of closed hot water systems

connection: DN 25 (1" internal thread)
manometer display range: 0-4 bar
automatic air vent
safety valve: 3 bar
incl. insulation box

Solarbayer membrane expansion vessel
for closed heating systems
manufactured according to UNI EN9001, DIN tested,
Certification according to
pressure equipment directive 97/23/EC

operating temperature: -10 C / +100 C
max. operating pressure: 8 bar
pre-pressure: 1,5 bar
connection: 3/4" external thread (on top)
with pedestal
diameter: 365 mm
height: 450 mm

with lead sealable shutoff device,
connection and draining
for expansion vessels according to DIN 4751,
for exchanging the expansion vessel with
draining the heating system

expansion vessel for drinking water
and boosters stations with membrane
Certification according to EC-type
examination 97/23/CE
for pressure equipments.

technical specifications:
volume: 35 liter
pre-pressure: 4,0 bar filled with nitrogen
flange stainless stell with connection
connection: DN 20 (3/4")
diameter: 365 mm
height with pedestals: 450 mm
max. operating temperature: -10°C till +100°C
max. operating pressure: 10 bar
colour: blue
exchangeable membrane for
drinking water

Absorption air separator
Absorption air separator for closed hot
and cold water systems up to a
maximum temperature of 120 °C
and an overpressure of 10 bar
variable mounting is possible
horizontal and vertical

dimension incl. insulation:
mounting length 106mm
height incl. insulation 233mm
depht incl. insulation 189mm

material: brass and high grade plastics
installation length 106mm
high 240mm
installation: vertical / horizontal (rotatable)
incl. magnetic element
min./max. temperature.: -10 °C / 120 °C.
max. pressure 10 bar
unique flow velocities up to 3 m/s.
20mm EPP insulation 0,036 W/mK