Heat pump package LWM 12 / WP-DF / Friwa Set 2, double tank 300/100 incl. Friwa25

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

The heat pump double cylinder WP-DF
combines two buffer tanks in one. The
upper cylinder is designed for heating
domestic hot water/drinking water with
a fresh water station FWS (not included
in the scope of delivery) and achieves a
high hot water output even at low flow
line temperatures. The integrated layer
separating plate prevents the hot water
in the upper part of the cylinder from
mixing with the colder water in the
lower part. Thus, the already heated
zone in the upper section remains
stable for hot water preparation. The
lower buffer cylinder is hydraulically
completely separate from the upper
cylinder and can therefore be operated
with very low flow line temperatures. It
also acts as a hydraulic separator for
the heating circuits and is suitable for
both heating and cooling operation.
This reduces the cycle times of the heat
pump, which leads to greater operational
reliability. This compact heat pump
system cylinder enables energy-saving
and efficient domestic hot water
preparation as well as efficient heating
operation with very low flow line
temperatures, which significantly
reduces power consumption.
Both cylinders are equipped with
connections for an electric heating
element, which can be used for emergency
heating or to use excess PV power.
The 75 mm PU rigid foam insulation
minimises energy losses and maximises
efficiency.

Technical data:
nominal volume upper buffer: 306 litres
nominal volume lower buffer: 95 litres
height with insulation: 1780 mm
tilted height: 1934 mm
diameter with insulation: 755 mm
weight: 95 kg
max. operating pressure: 3 bar
max. operating temperature: 95°C
min. operating temperature (lower): -7°C

Connections upper buffer tank:
heating: 4x DN25 (1"IG)
Flow FWS (top): 1xDN25 (1"IG)
immersion heater*: 1x DN40 (1 1/2"IG)
*max. installation length: 550 mm
sensor: 2x DN15 (1/2"IG)

Connections lower buffer tank:
heating: 4x DN25 (1"IG)
immersion heater*: 1x DN40 (1 1/2"IG)
*max. installation length: 550 mm
sensor: 1x DN15 (1/2"IG)

Thermal insulation:
material: Pu solid foam
lambda λ: 0.0235 W/(mK)
thickness uncompressed: 75 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: 1.55 kWh/24h
standing heat loss: 64 W
energy efficiency class: B

Electonical controlled fresh water station
FRIWA 25 with WILO HE pump.
Also cascadable up to 4 stations.
The already installed station with regulator
(digital Display), plate exchanger
with valves (in and outlet) is easy to install.
Warm water sensor and flow sensor for
controlling the pump for a constant warm
water temperature.
For a constant function we suggest a
storage tank with min. 500 liter capacity.
Fresh water controller with option
for circulation pump HE version
connection 230V, 50Hz
circulation pump optional

Technical datas:
Tapping capacity: 28 l/min
(CW 10 C, HW 45 C, 65 C storage temp.)

Tapping capacity by cascade (1-4 unit)
(CW 10 C, HW 60 C, 75 C storage temp.)
mixed warmwater 45 C
Power (kW) 75 / 143 / 214 / 285
Tapping cap (l/min) 30 / 55 / 88 / 111

dimension: (HxBxT in mm): 425x350x190
heating connection: DN 20 (3/4" IG)
max temperature heating 95 C
Max pressure: 3 bar
connection drinking side DN 20 (3/4" IG)
max temperature drinking side 70 C
Max pressure: 10 bar
material EN10028/7-1.4401

circulation pump:
Wilo Para 15/7-iPWM2
energy index < 0,20
class: IPX4D
power consumtion: 3-45 W

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: 1" external thread (on top)
with pedestal
diameter: 495 mm
height: 663 mm

with sealable shut off device,
connection and draining
for expansion vessels according to DIN 4751,
for replacing the expansion vessel
without draining the heating system

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

Frost protection valve made of brass for
protection of heat pumps against frost
damage in the event of faults or power
failures. The frost protection valve is
installed outside the building in the
flow and return of the system. It should
be installed as close as possible to the
outdoor unit of the heat pump to protect
the sensitive components from damage
caused by freezing medium. If the
temperature of the medium in the system
falls to 3 °C, the thermostatic element
inside the valve opens the flow to the
outside, to prevent damage. If the
temperature of the medium rises above 4°C,
the thermostatic element automatically
closes the water flow out of the system.
Before recommissioning only the system
pressure needs to be checked, heating
water topped up if necessary topped up
and the system vented.

Connection: 1 1/4" AG flat sealing
Installation length: 59mm
KVS: 90 m³/h
Nominal pressure: 10 bar
Opening temperature: 3°C
Closing temperature: 4°C
Triggering accuracy: ±1°C
Maximum fluid temperature: 90°C
Ambient temperature: -30°C to +50°C