Search
Search
Private customerProfessional
EN
  • wolf

Tube collector CRK-12

  • Highly aesthetic: elegant appearance with small tube diameter, optimised distance between pipes and appealing design
  • Easy to install: compact and handy, fully assembled, ready to connect, for installing the collectors on the roof tile cover and outside installation

What do you want to know?

Overview of benefits

The CRK collectors meet the requirements set for the Blue Angel certificate of environmental excellence according to RAL UZ 73

Powerful: High performance on the smallest of footprints; high yields particularly during spring and autumn; especially suitable for a combination of DHW heating and central heating backup

Certified by Solar Keymark

Durable: Direct flow collector working on the principle of a Thermos flask; enables a life-lasting vacuum for high thermal insulation

Constant: Absorber with highly selective coating on the outside of the inner glass tube in a high-vacuum casing – protected against environmental influences, no degradation, consistently high efficiency

Flexible: Modular layouts for ideal matching to the space available on the roof

Statutory warranty: 5 years

Specifications

CRK-12
Model type
CRK-12
General data
Connections (MS locking ring fitting)
mm
15
Installation angle
15° to 75°
Heat transfer medium
ANRO LS (undiluted)
Solar Keymark registration no.
011-7S321 R
Absorption (energy absorption)
%
> 93.5
Emissions
%
≤ 6
Optical efficiency *
%
64.2
Heat loss coefficient a1 *
W/(m2 K)
0.885
Heat loss coefficient a2 *
W/(m2 K2)
1E-3
Max. stagnation temperature
°C
272
Angle of incidence correction factor K * Iongitudinal / transversal
%
89 / 99
Effective thermal capacity
Coeff in kJ/ (m2 K)
8.416
Max. operating pressure
bar
10
Pressure drop (at 15 l/h x m² and 40°C)
mbar
5
Number of vacuum tubes per collector
Units
12
Glass tube diameter
mm
47 / 33 / 1.6
Gross surface area
m²
2.29
Aperture area
m²
2
Capacity
litres
1.74
Dimensions
Length
mm
1640
Width
mm
1390
Depth
mm
100
Weights
Weight (empty)
kg
32.7

Specifications

CRK-12

  • CRK-12

    General data
    Connections (MS locking ring fitting) (mm)
    15
    Installation angle
    15° to 75°
    Heat transfer medium
    ANRO LS (undiluted)
    Solar Keymark registration no.
    011-7S321 R
    Absorption (energy absorption) (%)
    > 93.5
    Emissions (%)
    ≤ 6
    Optical efficiency * (%)
    64.2
    Heat loss coefficient a1 * (W/(m2 K))
    0.885
    Heat loss coefficient a2 * (W/(m2 K2))
    1E-3
    Max. stagnation temperature (°C)
    272
    Angle of incidence correction factor K * Iongitudinal / transversal (%)
    89 / 99
    Effective thermal capacity (Coeff in kJ/ (m2 K))
    8.416
    Max. operating pressure (bar)
    10
    Pressure drop (at 15 l/h x m² and 40°C) (mbar)
    5
    Number of vacuum tubes per collector (Units)
    12
    Glass tube diameter (mm)
    47 / 33 / 1.6
    Gross surface area (m²)
    2.29
    Aperture area (m²)
    2
    Capacity (litres)
    1.74
    Dimensions
    Length (mm)
    1640
    Width (mm)
    1390
    Depth (mm)
    100
    Weights
    Weight (empty) (kg)
    32.7
    Show moreShow less

    Downloads

    Hello!

    How can we help?

    Customer Service
    Tools
    Important Links
    Downloads
    Service App
    Supplier portal