Solar technology
Solar collectors
Heat pumps
Solar technology
Product catalogue 2015
Edition I
Experience • Competence • Reliability
www.hewalex.pl
TABLE OF CONTENTS
Special features of Hewalex solar collectors
Selecting a solar collector - flat plate or evacuated tube?
Conditions for installation of solar collectors
Selection of a size for small solar systems
Cost-effectiveness of solar collectors
Solar sets
Components of solar systems
Flat plat solar collectors
Evacuated tube collectors
Connection components for solar collectors
Pump control units
Controller G422, Controller GH26
Heaters and accessories
HEWALEX heaters with one or two heat exchangers
INTEGRA heaters for heating water and supporting central heating
DHW heaters with HEWALEX heat pump
Air heat pump PCWU 3.8H-A3
Plate heat exchangers
Installation materials
Collector handles and flashings
Solar system piping
Supplementary system components
Other system components
Installation schemes for HEWALEX solar collectors
Contact
1
HEWALEX
„Providing the highest quality product to our customers, based on the
latest technical innovations, is the idea which is always with us in setting
new goals and finding new solutions.”
Leszek Skiba,
the owner of HEWALEX
The development of Hewalex started 25 years ago, was associated with popularizing the use of renewable energy sources. Many years of experience
and continuous improvement of products, also by acquiring information from users and operators, can offer proven solutions. Solar collectors are
subjected to difficult operating conditions, and the first collectors produced by Hewalex operate to date, which confirms their highest quality
standards.
Progress through Innovation
The 1990s
Hewalex in facts:
ź25 years of production experience
źPosition of the leading manufacturer in the domestic market and strongly
growing in foreign markets
źPresence in the 40 foreign markets, confirming the high technical standards
of products
źOwn research and development and designing resources, also for
implementation of non-standard projects. Cooperation with renowned
construction, designing and trading companies
źAttention to the rights of the Customer - full-value warranty coverage,
including up to 10 years warranty for solar collectors
źQuality Management System according to ISO 9001, prizes and awards
confirming the quality of products and services provided·
źParticipation in the GREENEVO project supporting the development of
innovative Polish companies on foreign markets
2
Perfection through Progress
2015
THE OFFER OF HEWALEX
Hewalex is a manufacturer and supplier of heating systems using renewable energy. In time, the Company extended its 25 years' production of solar
collectors with accessories for solar system. Currently, the offer includes complete solar systems for domestic hot water and support of central heating
in private buildings, as well as solutions for large residential, office, industrial, commercial, service and other facilities.
The second segment of the offer
includes heat pumps for heating of
buildings and heating domestic hot
water and swimming pool water.
Hewalex offers both air-to-water
and brine-to-water heat pumps.
Solar collectors
Flat plate solar collectors of KS series are offered with 4 different absorbers varying
in materials plate and tube materials and the type of glazing absorbing solar
radiation. The available space of the absorber for flat plate collectors is from 1.82 to
2.36 m2. The offer also includes highly efficient KSR10 evacuated tube collectors,
which can be mounted in any position, for example vertically on the facade of the
building.
Storage water heaters
The offered heaters with storage capacity from 200 to 1000 litres are fitted with
heating coils, while those storing from 500 to 3000 litres may cooperate with an
external heat exchanger. A highly recommended solution is a universal INTEGRA
heaters designed for domestic hot water and supporting central heating in the
building.
Accessories
The offered ZPS pump control units are equipped with all functions required for
any solar system, i.e. protection and control of operation. The mounting handles are
designed for most placement variants of solar collector. Elastic stainless steel tubes
are available in three types of thermal insulation. Two types of elastic tubes are
provided to connect the soldered or screwed connections.
3
SPECIAL FEATURES OF HEWALEX SOLAR COLLECTORS
Advantageous purchase prices and high heat
yields - a positive economic effect
Hewalex offers proven technical solutions characterized by very
good “price/performance” indicators.
As in the case of flat plate collectors of KS series, the highlyefficient evacuated tube collector KSR10 brings a positive
economic effect as regards the purchase price.
Operational safety, protection against overheating
Both flat plate collectors of KS series and evacuated tube collectors KSR10 are manufactured taking into account the most difficult operating
conditions. In particular, this applies to the so-called states of stagnation, when the absence of heat transfer from a solar collector causes boiling of
the heating medium (glycol) and formation of steam.
The design of absorber's tubes with lower connectors allows free flow of
the heating medium, which will be displaced by steam accumulating from
the top part of the absorber.
Thanks to quick removal of the heating medium from the absorber, it is
protected against overheating, which threatens its durability. At the same
time, the amount of steam is not as high, as in case of absorbers without the
bottom outlet of the heating medium. This in turn greatly reduces the
pressure in the whole solar system, preventing the opening of the safety
valve, loss of heating medium and the risk that the accessories will be
damaged by the steam filling the tubes.
!
Identical operating efficiency in tests and in real operating conditions
Efficiency parameters of Hewalex solar systems are tested in a recognized SPF Institute in Rapperswil in Switzerland. Test data are available at the
spf.ch website, as well as in Solar Keymark certificates at solakeymark.org. As one of the few available in the market, flat plate KS2000 collectors and
evacuated tube KSR10 collectors are continuously tested based on glycol as the heating medium and with high flow rate recommended for the
operating conditions.
4
SELECTING A SOLAR COLLECTOR - FLAT PLATE OR EVACUATED TUBE?
90%
80%
KSR10
KS
21
70%
00
TP
AC
η = 71.0%
Q = 426 W/m 2
0%
η = 59.6%
Q = 358 W/m 2
-16%
η = 50. 1%
Q = 301 W/m 2
-29%
η = 45. 2%
Q = 271 W/m 2
-36%
η = 35. 6%
Q = 213 W/m 2
-50%
60%
50%
30%
20%
10%
2
40%
Efficiency ( for 600 W/m )
For most applications, in view of the investment costs to
obtained results ratios, it is advisable to use flat plate
collectors. The unit purchase price of a flat plate collector
(EUR/m2) is on average 2.5 times lower than the price of an
evacuated tube collector. In extreme cases, the difference to
the disadvantage of evacuated tube collectors can be as
much as six-fold. However, a large part of attractively priced
evacuated tube collectors allow obtaining, at the outmost,
comparable, and often lower heat yields than in the case of
flat plate collectors. This applies mainly to collectors with
double wall tubes (“vacuum tube” or “pipe in pipe”), which
are characterized by a decreased transmittance of solar
radiation into the interior (and also to the absorber).
Typical operating range of collector
when heating domestic hot water
0%
0K
16 K
32 K
Temperature difference (absorber - environment)
KRS10 evacuated tube collectors - justification for use
Hewalex KRS10 evacuated tube collectors obtain higher efficiencies than flat plate collectors thus there is a technical justification for their use,
especially when the solar system is designed to operate at higher operating temperatures. Due to the construction of a direct flow through the
absorber, KSR10 evacuated tube collectors obtain higher
operating efficiency compared to “heat pipe” evacuated tube
collectors.
The special design of the reversed hydraulic connections in the
KSR10 collector protects the heating medium from overheating in
the state of stagnation.
The purchase cost of a highly efficient evacuated tube collector,
such as KSR10 exceeds the cost of buying standard collectors with
double wall tubes. However, due to high efficiency operation, the
“Price to performance” ratio will be beneficial in the case of KSR10
collector, shortening the period of return on investment.
A significant advantage of the KSR10 collector is the possibility of
installation in any position (without inclination), which allows, for
example its placement at the facade of the building. Individual
tubes may be rotated and thereby compensate for unfavourable
position in relation to the solar radiation incidence angle. This
feature of KSR10 collector increases the range of its application,
also for non-standard installation conditions.
5
CONDITIONS FOR INSTALLATION OF SOLAR COLLECTORS
Installation conditions
30o-45o
E
Hewalex solar collectors can be used in different
installation conditions. Flat plate collectors typically require
inclination to the level and the recommended angle for
year-round operation is within 30÷45o.
Solar collectors should be directed towards south (S), but a
deviation within the angle ±45o may be considered
acceptable. Decrease in heat yields of the solar collector
should be then not greater than 5 % per year.
60o
o
SE (45 )
S
W
60o
SW (45o)
Recommended inclinations of solar collectors depending on the application of the solar system
DHW heating
DHW heating
and central heating support
Heating of swimming pool water
at the seasonal pool
30o÷45o
45o÷60o
<30o
Unusual conditions for installation of solar collectors
If the roof planes are directed from east to west, it is possible to install two collector
batteries - the G422 controller allows for operation of such type of system. In
practice, however, it is recommended to choose one of the planes - usually the west
one, for installation of one larger collector battery (for example, 3 collectors in one
battery instead of two batteries with two collectors each). This solution
compensates for the adverse effects of insolation and at the same time reduces the
investment costs and simplifies the hydraulic system.
Also, the southern facade of the building may be used for the installation of solar
collectors. In such a case, KS flat plate collectors use the KSOL universal
constructions for the appropriate angle of inclination. KSR10 evacuated tube
collectors can be installed in a vertical position and tubes can be turned by 25o to
correct the unfavourable inclination of the absorbers.
Solar collectors on the roof should be installed maintaining a distance of 1 m from
the edge, where an increased force of the wind is present.
Installation in the upper part of the roof plane protects the collectors against the
snow sliding down. Otherwise, we recommend installing snow fences.
6
SELECTION OF A SIZE FOR SMALL SOLAR SYSTEMS
System for heating domestic hot water (DHW)
A well-designed solar system should cover up to 50 to 60 % of thermal demand required during the year for heating domestic hot water. To reach the
intended demand coverage for 1 person, 0.8 to 1.5 m2 of active absorber surface per person should be assumed. Additionally, when determining the
capacity of the tank, a standard indicator of daily hot water use for one person of 40 - 60 l of water at 55°C should be adopted. An appropriate choice of
a solution facilitates the selection of the solar set, which perfectly matches in terms of size the needs of a given number of users.
0.8÷1.5 m2/person
The system supporting central heating of the building
The use of solar collectors to support the central heating system is recommended for buildings with low energy demand, which mostly use a lowtemperature heating system, such as floor heating. For instance, for a building with very good thermal insulation and 30W/m2 average energy demand,
20 % coverage of annual demand can be achieved by installing respectively 0.05 m2 of KSR10 evacuated tube collector aperture area or 0.09m2 of flat
plate collector aperture area per 1 m2 of the building surface. At the same time an excessive oversizing of solar collectors' area should be avoided to
eliminate excess heat in summer, which causes their overheating. It is also possible to perform a computer simulation for a more accurate selection of
the solar system. To do so, please contact our Export Department or Technical Department.
0.09
or
m2/m2
0.05
m2/m2
Solar heating systems for swimming pools
Heating of swimming pool water brings good economic results - the solar system reaches high operating efficiency due to low temperature on the
heat consumption side. The role of the solar system is to maintain the pool water temperature by covering the current heat losses. The main heat
losses in the pool basin are caused by evaporation of water, hence the selection of collector area is made with respect to the water surface. The
reduction of heat losses and decrease in size of the solar system can be achieved by covering water surface (e.g. with foil), for the period when the pool
is not used.
Swimming pool type
Recommended total aperture area of the collectors
(flat plate or evacuated tube) with respect to water surface area
Outdoor pools, without covering of water surface
0.40÷0.60 m2/m2of the water surface
Indoor pools, without covering of water surface
0.40÷0.50 m2/m2 of water surface
Outdoor or indoor, with covering of water surface
0.30÷0.40 m2/m2 of water surface
7
SOLAR SETS
A. Solar sets
DOMESTIC WATER SETS
The offer of Hewalex includes solar sets designed for heating of domestic hot water (DHW) and for heating of DHW with central heating support.
Solar sets include such elements as:
ź Flat plate solar collectors of series KS2000, KS2100 only in version with entirely varnished housing (e.g. KS2000 TLP). Maximum number of
collectors in a set: 8 pcs (5 pcs KS2100 TAC).
ź Evacuated tube collectors of series KSR10. Maximum number of collectors in a set: 6 pcs KSR10
ź 2-coil DHW water heaters, with a capacity of 200 to 500 litres
ź ZPS pump control unit ECO P depending on the type of the solar set
ź ZNP expansion tank set with capacity dependent on the size of the solar set
ź Connection set for collectors connected within a battery
ź Storage DHW heater set
ź KSL masking profiles for KS flat plate collector batteries (except KS2100/KS2600 T AC models)
ź Armaflex HT insulation resistant to UV radiation 18/13 mm (2 running meters) for collector battery outlet piping
ź Heat transfer fluid (propylene glycol): volume depends on the size of the solar set for standard lengths of solar piping system
NOTE: Solar sets do not include solar collector mounting handles, which should be selected from the catalogue offer for specific installation
conditions on the building or outside of it. Also, piping systems with thermal insulation should be ordered separately depending on the required
length and type of insulation.
Selection of a heater capacity
For typical small solar systems in residential buildings, the number of
solar collectors can be defined in accordance with indicators.
500
8
The estimated capacity of the heater, l
Solar sets are usually selected based on the daily domestic hot water
consumption. Average consumption per person is 50 litres of water at
a temperature of 55 °C. The presented diagram allows for estimating
the required capacity of the heater, based on which one can select the
appropriate set with HEWALEX solar collectors.
6
7
5
400
4
300
3
2
200
100
30
Benefits of using a solar set:
ź A convenient choice of system size according to individual needs
ź Facilitated completion of the solar system components
ź Lowered investment costs compared to separately ordered components
8
35
40
45
50
55
60
Daily DHW consumption per person, l/day
65
70
SOLAR SETS
DOMESTIC WATER AND CENTRAL HEATING SUPPORT SETS
The offer of Hewalex includes solar sets performing two
functions: heating of domestic hot water (DHW) and central
heating support. Thanks to development of a special design of
the universal Hewalex heater INTEGRA, this type of solar system
does not require application of two separate tanks (heating water
and DHW) and the hydraulic system does not differ from the
standard system designed specifically for heating domestic hot
water.
Our offer includes sets for heating domestic hot water and central heating support with universal Hewalex heaters INTEGRA 400/100, 500/120 or
800/200. The maximum number of collectors in a set: 8 flat plate collectors of KS2100 series or 6 evacuated tube collectors of KSR10 type.
The solar system supporting central heating of a house is usually capable of covering for 5 to 20 % of annual thermal demand. It is strictly dependent
on the selected size of the system, but also on factors such as:
ź energy standard of the building (low-energy standard recommended)
ź parameters of the heating system (low temperature standard recommended, e.g. floor heating)
Hewalex INTEGRA heaters fulfil the dual function of domestic hot water heating and central heating support and also enable the cooperation of
several heat sources such as gas-fired boiler, fireplace with a water jacket, heat pumps and a solar system.
Central heating
boiler
DHW
Water heater
CH heating circuit
cold water
heat pump
soild fuel boiler/fireplace
9
COMPONENTS OF SOLAR SYSTEMS
B. Components of solar systems
1. FLAT PLATE SOLAR COLLECTORS
Applications
Flat plate solar collectors of KS series are intended for year-long operation,
especially for heating domestic hot water, swimming pool water, as well as for
supporting central heating systems in the building.
Construction of a flat plate collector
The main feature distinguishing individual flat plate collectors of the KS series is the absorber. Materials used in its construction directly affect the
cost of purchasing the collector, as well as its functional characteristics. A very important role is played by a flat plate collector housing, which must
provide adequate mechanical strength to loads resulting from forces of wind, or snow. On the one hand the housing must provide proper ventilation
inside the flat plate collector, and on the other hand protect it against the ingress of moisture from rain or melting snow. The housing of KS collectors
is made of aluminum to provide high stiffness and low weight, as well as anticorrosive properties. Versions designated with “L” index (e.g. TLP) have
their housings powder-coated (RAL7022 or in other colours on request). For all collectors, including those with non-coated housing (e.g. TP), glass
frames and masking profiles for mounting between the collectors to be joined in a single battery are factory-coated.
glazing
glazing frame with sealing
absorber piping
glass veil
absorber plate
side insulation
housing
bottom insulation
The glass used for glazing of the collector is the top solar radiation transmission class, at the same time maintaining excellent directional
characteristics. This means that even at low angles of incidence of sunlight, it provides high transmittance to the inside of the collector. In the case of
KS2100 TLP ACR, KS2400 TLP ACR, KS2600 TLP ACR flat plate collectors and KSR10 evacuated tube collectors, glass surfaces are covered by antireflective coatings that further increase solar radiation transmittance by a few per cent, increasing the efficiency of the collector and also heat yields.
Connection of the collectors in a battery is done by elastic tubes made of stainless steel. In standard, solar collectors are equipped with threaded
connections that provide a tight seal resistant to mechanical and thermal loads. This eliminates the occurrence of permanent mechanical damages to
the collector stub pipes, which, in the case of self-sealing connections such as external O-rings, require replacement of the entire collector. In addition,
pipe union connections allow, if needed during maintenance operations, the disassembly of the collector located inside the battery, without the need
to disassemble the collectors on the side of the battery.
10
COMPONENTS OF SOLAR SYSTEMS
Selection of a flat plate collector due to the type of absorber used
The most important element of a solar collector, i.e. the absorber, is responsible for the amount of heat captured. Features to be met by the absorber
include high efficiency, mechanical strength and durability in order to maintain operating parameters over the life of the collector. Selection of a flat
plate collector due to the absorber type should result from customer’s preferences in terms of purchase price, the assumed efficiency and technology
used (traditional or new).
Copper-Copper
Layer: PVD
KS2000 TP/TLP
Aluminium-Copper
Layer: PVD
KS2100 T AC
KS2600 T AC
Aluminium-Copper
Layer: PVD
KS2100 TP AC/TLP AC
KS2400 TP AC/TLP AC
KS2600 TP AC/TLP AC
ź The highest material standard
ź Standard PVD layers
ź The highest heat yields
ź Quality at attractive purchase price
ź Positive „price/efficiency” ratio
ź Short return of investment
ź Current market standard
ź Modern production technology
ź Optimal cost of purchasing the collector
Hewalex manufactures 4 types of absorbers, including market-standard Aluminium-Copper (aluminium sheet, copper piping). The absorbing layers
use the PVD (ceramic- metal) coatings.
Advanced absorber manufacturing technologies
The absorbers are manufactured in the factory of Hewalex based on two new
technologies implemented for the first time in the Polish market, i.e. ultrasonic
welding for copper absorbers and laser welding for aluminium absorbers.
Joining of sheet with absorber piping without additional filler metal provides for
maximum mechanical strength of the connection. According to the tests carried
out at SPF Institute in Rapperswil, the highest heat transmission is provided by the
two above-mentioned technologies, where the contact of the absorber's plates
with its pipes takes place through the base material (copper-copper, aluminiumcopper, aluminium-aluminium). The previously widely used absorber soldering
technology required increasing the contact area between the sheet and piping to
ensure transfer of heat through the filler metal with up to 8 times lower thermal
conductivity as compared to copper.
11
COMPONENTS OF SOLAR SYSTEMS
FLAT PLATE SOLAR COLLECTORS:
WARRANTY
WARRANTY
10 years
10 years
HEWALEX KS2000 TLP
HEWALEX KS2100 TLP AC
SOLAR COLLECTOR:
KS2000 TLP1)
KS2100 TLP ACR1) 2)
KS2600 TLP ACR1) 2)
KS2100 TLP AC1) 2)
(KS2000 TP)
(KS2100 TP ACR)
(KS2600 TP ACR)
(KS2100 TP AC)
14.22.00
(14.21.00)
14.48.00
(14.57.00)
14.91.00
(14.92.00)
14.47.00
(14.55.00)
Solar Keymark certificate (PN-EN12975-1,2:2007)
011-7S181 F
011-7S2159 F
011-7S2159 F
011-7S2158 F
2
1.818
1.820
2.360
1.820
2.095
2.090
2.650
2.090
80.2
82.7
82.7
80.8
3.80
3.247
3.247
3.334
0.0067
0.0200
0.020
0.0200
structured
anti-reflective
anti-reflective
structured
copper / copper
aluminium / copper
aluminium/copper
aluminium / copper
Type of selective coating
PVD
PVD
PVD
PVD
Piping layout of absorber
harp
harp
harp
harfowy
4 x external ¾”
4 x external ¾” 6)
Article number
Active (aperture) area, m
Gross area (total), m
2
Optical efficiency (with respect to aperture), %
Heat loss coeff. a1 (with respect to aperture), W/m2K
2 2
Heat loss coeff. a2 (with respect to aperture), W/m K
Glass
Material of absorber sheet / piping
3)
4 x external ¾”
4 x external ¾”
Joining technique
ultrasonic welding
laser welding
laser welding
laser welding
Dimensions, mm
2020 x 1037 x 87
2018 x 1037 x 89
2018 x 1314 x 89
2018 x 1037 x 89
aluminium
aluminium
aluminium
aluminium
Weight (when empty), kg
40
35.1
43.4
34.4
Liquid capacity, litres
1.1
0.85
1.09
0.85
1.8 (1.2÷2.5)
1.8 (1.2÷2.5)
2.2 (1.5÷3.0)
1.8 (1.2÷2.5)
Maximum operating pressure, bar
6
6
6
6
Warranty, years
10
10
10
10
Number of connections
Housing
Nominal flow rate l/min.
1)
Letter “L” in the name of the collector denotes that aluminium housing and frames of the collector are powder-painted in RAL7022 (umbra grey). The lack of “L” letter
denotes that only collector frames are powder-painted.
2)
Collectors of 2100, 2400, and 2600 series are not to be connected with other collector models due to different location of connections
Note: In standard arrangement it is allowed to connect up to 8 flat plate collectors in parallel or 5 pieces in series.
12
COMPONENTS OF SOLAR SYSTEMS
WARRANTY
WARRANTY
10 years
HEWALEX KS2100 TLP ACR
SOLAR COLLECTOR:
Article number
Solar Keymark certificate (PN-EN12975-1,2:2007)
Active (aperture) area, m2
Gross area (total), m
2
5 years
HEWALEX KS2100 T AC
KS2400 TLP AC1) 2)
KS2600 TLP AC1) 2)
(KS2400 TP AC)
(KS2600 TP AC)
KS2100 T AC
KS2600 T AC
14.54.00
(14.52.00)
14.90.00
(14.93.00)
14.49.00
14.95.00
011-7S2158 F
011-7S2158 F
* 2)
* 2)
2.190
2.360
1.836
2.373
2.460
2.650
2.054
2.611
Optical efficiency (with respect to aperture), %
80.8
80.8
74.6 *
74.6 *2)
Heat loss coeff. a1 (with respect to aperture), W/m2K
3.334
3.334
2.985*2)
2.985*2)
Heat loss coeff. a2 (with respect to aperture), W/m2K2
0.0200
0.0200
0.021*2)
0.021*2)
structured
structured
normal tempered
normal tempered
aluminium / copper
aluminium / copper
aluminium/copper
aluminium/copper
Type of selective coating
PVD
PVD
PVD
PVD
Piping layout of absorber
harp
harp
harp
4 x external Ø18 mm
4 x external Ø18 mm
Glass
Material of absorber sheet / piping
Number of connections
4 x external ¾”
harp
6)
4 x external ¾”
6)
2)
Joining technique
laser welding
laser welding
laser welding
laser welding
Dimensions, mm
2018 x 1221 x 89
2018 x 1314 x 89
2018 x 1018 x 89
2018 x 1294 x 89
aluminium
aluminium
aluminium
aluminium
Weight (when empty), kg
40.0
42.4
32
39
Liquid capacity, litres
1.00
1.09
0.76
0.97
2.0 (1.3÷2.8)
2.2 (1.5÷3.0)
x
x
Maximum operating pressure, bar
6
6
6
6
Warranty, years
10
10
5
5
Housing
Nominal flow rate l/min.
1)
Letter “L” in the name of the collector denotes that aluminium housing and frames of the collector are powder-painted in RAL7022 (umbra grey). The lack of “L” letter
denotes that only collector frames are powder-painted.
2)
Collectors of 2100, 2400, and 2600 series are not to be connected with other collector models due to different location of connections
Note: In standard arrangement it is allowed to connect up to 8 flat plate collectors in parallel or 5 pieces in series.
13
COMPONENTS OF SOLAR SYSTEMS
2. EVACUATED TUBE COLLECTORS
Applications
KSR10 evacuated tube collectors are intended for year-round operation, in particular
for heating domestic hot water, supporting the building heating system, as well as for
industrial processes and other processes requiring increased heating medium
temperatures. At the same time, the KSR10 solar evacuated tube collector may be
used in the case of untypical installation conditions, where application of flat-plate
collectors may be impossible, impeded or unfavourable due to decreased heat yields.
Versatile installation options
The technology of direct flow through absorbers does not require
provision of a specific angle of inclination of the KSR10 evacuated tube
collector. This way it can be installed in any position, which also extends
the collector's application range in unusual installation conditions. An
example would be vertical installation on the facade of the building.
Evacuated tubes can be rotated by 25o, thanks to which a position of the
absorbers is corrected to obtain favourable insolation conditions.
25o
61o
Increased spacing between the KSR10 collector tubes provide full
insolation of the absorbers in all operating conditions. An example
would be operation during the summer of a collector installed in vertical
position. Even at the highest angle of incidence of sunlight (in Poland in
the summer 61o), there is no shading of the adjacent absorbers.
Increasing the angle of rotation of the tube over 25o is not required, and
even it is undesirable, since it causes shading of the absorber.
KSR10
Shading
~0%
High operating efficiency thanks to advanced technology
Evacuated tube collector KRS10 achieves one of the highest efficiencies available in the European market (optical efficiency with respect to the
absorber - 85%).
This follows from the use of advanced solutions, such as:
• one-wall Narva evacuated tubes with high solar transmittance
• use of Na-Ca-Si glass ensures tightness and impermeability even of the smallest particles of gas throughout the period at least 20 years of
exploitation
• additionally, the anti-reflective coating applied to both sides increases transmittance of solar radiation to the inside of the glass tube by about 5 %
• deep vacuum in the tube of 10 mbar-6 (removal of 99.999999 % of air) eliminates convective heat losses
• a getter absorbing gas particles, and thus supporting the vacuum at a deep level
• absorbers made entirely of copper and coated with a selective layer of PVD (TiNOX Classic)
• direct flow of heating medium increases the efficiency by 4-6 % compared to the structurally identical evacuated tubes built on the principle of a heat pipe.
14
COMPONENTS OF SOLAR SYSTEMS
The maximum level of operational safety
The design of evacuated tubes by a reputable German manufacturer Narva
Lichtquellen GmbH + Co. KG is based on more than 40 years of experience in vacuum
technology. The patented metal-to-glass connection based on full melting of the
contact area of the chrome-nickel steel disk with glass tube. This ensures absolute
tightness and mechanical strength also to lateral loads (e.g. snow). Passage of the
concentric tube (through which the heat transfer fluid flows - glycol) is a metal-tometal connection, which eliminates the problem of sealing the glass -to-metal
connections used in some of the collectors.
Hewalex provided a patented system connecting the KSR10 collector in the form of bottom connectors. This solution fully protects the collector
against overheating in case heat transfer from the collector is disturbed. Glycol is easily removed by steam formed in the top part of the absorber
(state of stagnation).
SOLAR COLLECTOR:
Article number
Solar Keymark certificate (PN-EN12975)
Active (aperture) area, m
Gross area (total), m
2
2
Optical efficiency (with respect to the absorber/aperture), %,
Heat loss coeff. a1 (with respect to the absorber/aperture), W/m2K
2 2
Heat loss coeff. a2 (with respect to the absorber/aperture), W/m K
Glazing: solar glass / anti-reflexive / tempered
KSR10
2 x KSR10
15.11.00
15.21.00
011-7S1106 R
011-7S1106 R
1.014
2.028
1.82
3.68
85 / 78
85 / 78
1.38 / 1.27
1.38 / 1.27
0.0013 / 0.0012
0.0013 / 0.0012
+ /+/-
+ /+/-
10 mbar
10-6 mbar
copper / copper
copper / copper
Type of selective coating
TiNOX Classic
TiNOX Classic
Piping layout of absorber
concentric pipe
concentric pipe
direct flow
direct flow
2 x external ¾”
2 x external ¾”
Joining technique
ultrasonic welding
ultrasonic welding
Dimensions, mm
2130 x 856 x 116
2130 x 1720 x 116
aluminium
aluminium
Weight (when empty), kg
30
60
Liquid capacity, litres
1.8
3.6
Maximum operating pressure, bar
6
6
Warranty
10
10
Vacuum
Material of absorber sheet / piping
Type of flow,
Number of connections
Housing
-6
The starting unit for completing batteries for evacuated tube collectors is 2xKSR10 consisting of 20 evacuated tubes located in a single base construction. It is recommended to connect
max. 6 single KSR10 collectors (1 double 2xKSR10 collectors + 4 single KSR10 collectors) into 1 set. For collectors KSR10, it is necessary to select the right connections and mounting
components depending on method and location of installation.
15
COMPONENTS OF SOLAR SYSTEMS
3. CONNECTION COMPONENTS FOR SOLAR COLLECTORS
Connection set for flat plate collectors
+
3
2
1
3
+
2
ZPKS connection sets allow connecting up to 8 flat plate collectors to a piping system (except KS2100/2600 T AC).
ZPKS 2
ZPKS 3
ZPKS 4
ZPKS 5
ZPKS 6
ZPKS 7
ZPKS 8
47.01.02
47.01.03
47.01.04
47.01.05
47.01.06
47.01.07
47.01.08
2
3
4
5
6
7
8
item 1. Sensor housing with a vent (44.01.00), pcs
1
1
1
1
1
1
1
item 2. Pipe union KS¾” (42.01.00), pcs
2
4
6
8
10
12
14
item 3. Plug KS¾” (43.01.00), pcs
2
2
2
2
2
2
2
SET TYPE:
Article number
Number of KS collectors in a battery, pcs
1)
Constituent elements of the set (article number of the element):
16
COMPONENTS OF SOLAR SYSTEMS
Connection set for flat plate collectors
ZPKS TAC
3
1
5
6
2
4
1
ZPKS connection sets allow connecting up to 5 (except KS2100/2600 T AC) flat plate collectors to a piping system.
Set ZPKS-18 allows for a complete montage and connection with a piping system of solar thermal installation. The components of a given set
depend on the quantity of solar collectors in a battery.
ZPKS 1-18
ZPKS 2-18
ZPKS 3-18
ZPKS 4-18
ZPKS 5-18
47.01.14
47.01.12
47.01.13
-
-
1
2
3
4
5
item 1. Connector KS18, pcs
-
2
4
6
8
item 2. Plug KS18, pcs
1
1
1
1
1
item 3. Temperature sensor housing KS18, pcs
1
1
1
1
1
item 4. Union KS18 - ¾”, pcs
1
1
1
1
1
item 5. Union KS18 - ¾” with a vent, pcs
1
1
1
1
1
item 6. Split pin, pcs
4
6
8
10
12
SET TYPE:
Article number
Number of KS collectors in a battery, pcs
1)
Constituent elements of the set:
17
COMPONENTS OF SOLAR SYSTEMS
KSL masking profile
Masking profiles are used to cover the space between the flat plate collectors
arranged in a battery. It improves aesthetics and provides protection for pipe
unions that connect the collectors (except KS2100/KS2600 T AC). The KSL
masking profile is made of aluminium sheet, painted in umbra grey colour
RAL 7022.
For a single battery of collectors, order one profile less than the number of
collectors in the battery.
The proper number of masking profiles is included in each solar set.
KSL Masking profile Art. no. 41.02.00
Connection set for evacuated tube collectors
2
1
ZPKR connection set allows connecting up to 6 units of KSR10 evacuated tube collectors to a piping system.
SET TYPE:
ZPKR
47.02.01
Article number
Number of KSR collectors in a battery, pcs
Set components
(article number):
18
1-6
item 1. Three-way adapter with a vent (46.02.01), pcs.
1
item 2. Collector temperature sensor housing, pcs.
1
COMPONENTS OF SOLAR SYSTEMS
4. PUMP CONTROL UNITS
The ZPS pump control units are used for operation solar heating systems
with flat plate and evacuated tube collectors made by HEWALEX. They merge
the advantages of common single and double-suction pump control units,
since they contain all the components of a double-suction unit, such as
circulation pump, solar controller, air separator with a vent, non-return valve,
safety valve, shut-off valve and prefill valves. They are reliable and easy to
assemble, which is characteristic of single-suction pump control units.
Universal installation possibilities
The ZPS 18e-01 ECO pump control units sets provide broad
installation possibilities. It is possible to install the piping on the
left or on the right side, depending on location of the storage
water heater. Permitted mounting configurations are included in
the installation manuals.
ErP
ready
ZPS 18e-01 ECO pump control unit
The ZPS 18e-01 pump control unit is equipped with an electronic system of flow rate measurement, thanks to which the actual measurement of flow
rate in the circuit is done automatically, and the corresponding value is shown on a display of G422-P controller.
The advantage of such a solution is the simplification of the start-up procedure, higher accuracy of the measurement, and greater precision of
controlling the parameters of solar installation for optimal use of solar energy. In addition, the unit is equipped with a safety function that consists in
shutting off the circulation pump in case there is no flow of the fluid.
19
COMPONENTS OF SOLAR SYSTEMS
ZPS 18e-01 ECO
Controller G422
Manual vent with hose
Filling and release valve
Air separator and check valve
Safety valve 6 bar
Manometer 0÷6 bar
Electronic flow meter
Circulation pump WILO Yonos
Para ST17/7 PWM
Ball valve
Filling and release valve
TYPE:
Article number
ZPS 18e-01 ECO
71.33.05
Number of supported KS2000/KS2100 collectors
2 – 12
Number of supported KSR10 collectors
2 – 18
Method of flow measurement
electronic
Installation options of the ZPS unit
ZPS pump control units can be mounted in convenient way on the
wall through earlier fastening of factory delivered wall bracket (1).
As an option can be used the spacing bracket 75 mm (2) which
allows the installation of the ZPS unit over the pipeline on the wall.
a
Flow regulation method
manual
ZPS spacer bracket
Flow meter range l/min
0 – 18
Article number
Controller model
G422
Temperature sensors included
NTC10kOhm (4 pcs)
Solar circulation pump
WILO ST15/6-3-PR
Smooth regulation of pump's rotational speed
+
Air separator
+
Safety valve, 6 bar
+
Manometer/analogue thermometer
+/-
Non-return valve/shut-off valves
+/+
2
20
71.33.02
1
COMPONENTS OF SOLAR SYSTEMS
G422 and GH26 solar controllers
G422 and GH26 solar controllers perform the same functions,
providing a full operation of solar systems in the most common
configurations. The G422 controller is an integral component of the
pump control unit ZPS 18e-01 ECO.
The GH26 controller is designed for wall mounting, so that it is
possible to use it for solar systems not containing standard ZPS
units. The GH26 controller can be used for existing solar systems
which also can be complemented by an electronic flowmeter.
Solar controllers
G422
Solar controllers
Specific features of G422 and GH26 controllers:
Number of temperature sensors included
Notification of temperature sensor damage
Pressure switch of solar installation
Number of available installation schemes
Circulation pump DHW
Control of boiler/heat pump/electric heating element
Smooth regulation of the circulating pump
Mode of controlling the pump
Display of operating scheme
Calculation instantaneous power of collectors
Energy output data recording
Time programs (e.g. DHW circulation pump)
Setting the flow rate during start up
Measurement of flow rate
GH26
G422 / GH26
4
YES
YES (possibility to connect NO type Pressure switch)
17
YES (discontinuous mode available, 10 minute intervals)
YES/YES/YES
YES (in full rotational speed range of PWM pump)
Opti Flow algorithm - delta T between collectors
and water in the tank
YES (animated operating devices and temperatures)
YES
YES (daily, weekly, monthly, yearly)
YES
manual
electronic
Holiday mode
YES (setting specific dates)
Cooling function of the tank
YES (independent setting)
Freezing protection
Anti-Legionella function
Protection of pump against jamming
RS485 slot enabling the connection of EKONTROL
YES
YES
YES (activated every 72 hours)
YES
remote monitoring system
Article name
G422 controller (without sensors)
GH26 controller
Temperature sensor 3.0 m silicone
Temperature sensor 3.0 m
Wire, 18.5 m
Electronic flow meter (option for GH26 controller)
Article number
74.02.01
74.02.02
74.10.05
74.30.00
74.18.05
71.33.01
21
COMPONENTS OF SOLAR SYSTEMS
EKONTROL – Remote control of the operation
Remote control of the solar system or heat pump operation is so
important that they are in principle unattended systems and
possible errors may long remain unnoticed. For example, EKONTROL
system allows for constant supervision of the operation of the solar
system, also in order to optimize it. This allows to control and
increase the effectiveness of supervised home installation. The
operation of the solar system in real time is reproduced to the
computer screen, ipad or smartphone. The user can easily change the
parameters. EKONTROL system provides access to an especially wide
range of functions of the G422 controller.
Controller
Connection of EKO-LAN modem can be done by means of LAN
cable. More technical details regarding the connection are
available on www.ekontrol.pl
Modem EKO-LAN
Router
Basic features of EKONTROL
ź Remote modifications of the operating settings of the solar system or heat pump
ź Access to the solar system in real time
ź Controlled by computer, ipad, smartphone
ź Many years of statistics of the solar system operation
ź A possibility to connect up to 5 controllers to the modem
22
Website of the EKONTROL system
www.ekontrol.pl
User registration of the EKONTROL system on
the website ekontrol.pl. General demo version
is available (login: demo, password: demo).
COMPONENTS OF SOLAR SYSTEMS
5.HEATERS AND ACCESSORIES
Hewalex heaters with one or two heat exchangers
HEWALEX heaters with two heat exchangers are designed for 2-unit heating of domestic hot
water (DHW) in households using heat from solar collectors and heat from conventional heat
source, e.g. a central heating boiler. Enamel layers of heaters are protected against corrosion by
a magnesium anode, subject to periodic replacement, or a maintenance-free titanium anode.
Thermal insulation consists of a rigid polyurethane foam layer in a protective coating. All
connection stubs and measuring stub pipes are located along one vertical line, which definitely
facilitates assembly and enhances aesthetics of the installation. In addition, each heater is
equipped with an analogue thermometer, an inspection hole, circulation stub pipe and a nozzle
allowing for insertion of an electric heating element, which can be automatically supported by
the solar controller.
OKC200
NTRR/SOL
VF200-2
OKC250
NTRR/SOL
OKC300
NTRR/SOL/n
OKC300
NTRR/SOL
81.10.01
86.20.00
81.10.00
81.10.05
81.10.02
Heater application
DHW
DHW
DHW
DHW
DHW
Diameter / width, mm
603
540
603
670
603
Height, mm
1382
1473
1532
1580
1790
Maximum height in tilt, mm
1475
1530
1600
1647
1875
Weight, kg
106
85
120
135
125
external 1"
external 1”
internal ¾”
internal 1 ”
external ¾”
external 1”
external ¾”
external 1 ”
external 1”
external 1”
internal ¾”
internal 1 ”
external 1"
external 1"
internal ¾”
internal 1 ”
external 1"
external 1”
internal ¾”
internal 1 ”
0.80/0.80
0.95 / 0.70
1.00 / 1.00
1.20/0.80
1.20/0.80
6
6
6
6
6
Magnesium anode
yes
yes
yes
yes
yes
Pump control unit
-
-
-
-
-
5
5
5
5
5
TYPE OF HEWALEX HEATER:
Article number
Size of connections:
•
•
•
•
DHW
upper/lower heat exchanger
circulation
electric heater
Upper/lower heat exchanger
• heating area, m2
Maximum operating pressure, bar
1)
Warranty , years
1)
Warranty applies only to the heater - without accessories
23
COMPONENTS OF SOLAR SYSTEMS
Cold water outlet
HEWALEX OKC storage water heaters are
standard components of the solar systems.
Housing of OKC heaters is made of rigid
material in silver colour, which helps keeping
it clean. Adjustable feet allow for installation
of the heater directly on the floor and its
levelling.
Enamelled tank
Magnesium anode
Thermometer
Heat exchanger for the boiler
Temperature sensor sleeve
Thermal insulation
with housing
DHW circulation nozzle
Electric heater
connector pipe
HEWALEX presents a new special heater
OKC300NTRR/SOL/n with reduced height
(210 mm as compared to OKC300NTRR/SOL),
which is intended for use in lower areas , such
as in renovated buildings.
Heat exchanger
for solar collectors
Temperature sensor sleeve
Inspection flange
Cold water inlet
1)
VF300-2S
OKC400
NTRR/SOL
VF400-2
OKC500
NTRR/SOL
VF500-2
VF 750-2
VF 1000-2
86.30.00
81.10.03
86.40.00
81.10.04
86.50.00
86.60.01
86.70.01
DHW
DHW
DHW
DHW
DHW
DHW
DHW
600
650
700
700
700
910
1010
1834
1919
1631
1892
1961
2023
2050
1892
1980
1738
1990
2044
1990
2025
106
137
130
160
160
220.5
271.5
external ¾”
external 1”
external ¾”
external 1 ”
external 1"
external 1"
Internal ¾”
Internal 1 ”
external ¾”
external 1”
external ¾”
external 1 ”
external 1"
external 1"
Internal ¾”
Internal 1 ”
external ¾”
external 1”
external ¾”
external 1 ”
external 5/4”
external 1”
external ¾”
Internal 1 ”
external 5/4”
external 1”
external ¾”
Internal 1 ”
1.55 / 0.80
2.0/1.0
1.80 / 1.05
2.0/1.0
1.90 / 1.30
1.93 / 1.13
2.45 / 1.12
6
6
6
6
6
10
10
yes
yes
yes
yes
yes
yes
yes
-
-
-
-
-
-
-
5
5
5
5
5
5
5
Warranty applies only to the heater - without accessories
VF750-1 and VF1000-1 on request
24
COMPONENTS OF SOLAR SYSTEMS
INTEGRA heaters for heating water and supporting central heating
The INTEGRA universal heater provides dual operation of the solar system, i.e. heating of domestic hot water (DHW) and central heating support.
Concurrently, the heater provides integration of multiple sources of heat in one heating system.
Design features:
• the combo “tank in tank” design
• a built-in enamelled hot water tank providing superior comfort of
domestic hot water and possibility to connect DHW circulation
• connection of DHW tank in the bottom increases the efficiency of the
solar system by intensively cooling lower heating water zone. the
bottom connection also allows for easy discharge of water and
maintenance of the tank
• a large number of nozzles provides connection of many sources of heat,
such as gas-fired boiler, a fireplace with a water jacket, solid fuel boilers,
heat pumps and electric heaters
• the built-in partitions and the special design of water guide rings in
heating water pipes ensure clear division of the heater's volume into
separate temperature zones
• low levels of heat loss and insulation with a thickness of 100 mm made
of soft removable polyurethane foam
The INTEGRA universal heater, characterized by a distinct division into temperature zones, allows you to connect any heat sources with different
levels of temperature and heating power. The upper zone is designated for heating domestic hot water. Boilers with good controllability of power can
be connected to the middle zone. If the heat source has a low power setting (e.g. DHW heat pump) or limited controllability of heating power (e.g. coalfired boiler), it can be connected to an increased volume of heating water (middle and lower zone).
25
COMPONENTS OF SOLAR SYSTEMS
Heat distribution
domestic hot water
Upper “hot” zone
(provision of heat for comfort
of DHW heating)
Heat distribution
Central heating system
Middle zone
(supply from the primary heat source,
e.g. gas-fired boiler)
Lower “cold” zone
(effective transfer of heat from a solar
system or a fireplace)
Cold tap water
DHW tank inlet
INTEGRA 400/100
INTEGRA 500/120
INTEGRA 800/200
Article number
81.50.04
81.50.05
81.50.06
Heater application
DHW + CH
DHW + CH
DHW + CH
Diameter without insulation / with insulation,
600/800
650/850
790/990
Overall height, mm
1480
1850
2015
Height in tilt, mm
1560
2040
2150
Weight, kg
130
158
210
external ¾”
- / external 1”
external ¾”
internal 1”
internal 1 ”
external ¾”
- / external 1”
external ¾”
internal 1”
internal 1 ”
external ¾”
- / external 1”
external ¾”
internal 1”
internal 1 ”
Heat exchanger area, m2
1.3
1.5
2.2
Heat exchanger capacity, l
7.5
9
13.5
Maximum operating pressure of DHW, bar
6
6
6
Maximum operating pressure of central heating, bar
3
3
3
yes
yes
yes
5
5
5
TYPE OF HEWALEX HEATER:
Size of connections:
•
•
•
•
•
DHW
upper/lower heat exchangers
circulation
central heating connector
electric heater
Magnesium anode
Warranty, years
26
COMPONENTS OF SOLAR SYSTEMS
DHW heater with heat pump
HEWALEX PCWU 200K / 300K / 300SK-2.3kW heaters with heat pumps are intended for heating
domestic water in households using air heat pump integrated with the heater. As standard, PCWU heat
pumps are also equipped with electric heaters.
It is possible to control the entire DHW boiler room depending on the selected scheme (combination of
additional devices, such as electrical heater, circulation pump, automatic gas boiler, oil boiler, electric
boiler and solid fuel boiler). Exchangers with large heat exchange surface allow for effective
collaboration with solar collectors or a fireplace with a water jacket.
In heaters with a heat pump, both the tank and the exchanger are made of high quality stainless steel.
Thermal insulation is made of polyurethane foam in protective coating of steel sheet with aluminium
panel, where the controller is located. Heaters made of stainless steel and titanium active anode are the
best available corrosion protection of the tank.
The heat pump can be combined with mechanical ventilation in virtually any building above 100 m²,
since the nominal air flow is only 250-350 m³/h. This allows for all-year operation of the device with a
very high COP (3.84 for A15/W15-45).
HEATER TYPE:
PCWU200K-1.3kW
PCWU200K-2.3kW
PCWU300K-2.3kW
PCWU300SK-2.3kW
Article number
91.10.53
91.10.50
91.10.52
91.10.51
Heater application
DHW
DHW
DHW
DHW
Diameter / width, mm
520
560
640
640
Height, mm
1980
1700
1870
1870
Weight, kg
86
90
101
102
internal ¾”
internal¾”
internal ¾”
internal ¾”
- / 1.00
- / 1.00
- / 1.50
1.00 / 1.00
7
7
7
7
1.63
0.44
1.5
55
0
1~230 V / 50 Hz
2.05
1 / rotary
45
2.3
0.6
1.5
55
0
1~230 V / 50 Hz
2.8
1 / rotary
45
2.3
0.6
1.5
55
0
1~230 V / 50 Hz
2.8
1 / rotary
45
2.3
0.6
1.5
55
0
1~230 V / 50 Hz
2.8
1 / rotary
45
yes/no
yes/yes
yes/yes
yes/yes
2
2
2
2
Size of connections:
•
•
•
•
•
DHW
upper/lower heat exchangers
circulation
electric heater
discharge of water from the tank
Exchanger (solar/boiler):
• heating area, m2
Maximum operating pressure, bar
Upper/lower heat exchanger:
• rated heating capacity, kW 1)
• rated power consumption, kW 1)
• electric heater power, kW
• maximum water temperature, °C
• minimum air supply temperature, °C
• supply voltage
• operating current, A1)
• number of compressors / type
• volume, dB
Magnesium / titanium anode
Warranty, years
1)
Data for the following conditions: heating of DHW from 15 °C to 45 °C, ambient temperature of 15 °C.
27
COMPONENTS OF SOLAR SYSTEMS
Air heat pump PCWU 2.5kW
The PCWU 2.5kW series heat pump is designed for heating domestic hot water
(DHW) and works with existing or new DHW tanks. Heat source for the pump is the
air drawn through an intake duct from environment or building interior, and
electric energy supplying the compressor. For example, water heating from 15oC to
45oC at air temp. exceeding 20oC gives an average COP near 4.92. It means that the
offered heat pump can use more than four times less electric energy than the
value of heat it generates. The advantage of PCWU 2.5kW type heat pump is easy
use in case of system modernisation. For example, the unit may substitute a
standard electric boiler frequently used jointly with solid fuel burner out of
heating season.
Application
• DHW for 3-6 people
• The unit is fitted to work in a system with water tanks ranging from 100-300 litres
Location
• Indoor (intake and discharge ducts with proper diameters are needed)
Components
• The set includes WILO circulating pump for water, installed between
the tank and heat pump
• Possibility to control the whole DHW boiler room
• Automatic heat pump control system with an on-wall controller
• Extended controller making it possible to choose the priority of the most
economic DHW heating option
• Housing made of high-grade ABS material
• Control for circulating pump
• Time programmes with 1-hour accuracy
Product:
HEWALEX heat pumps are able to meet the demand for
hot water of a typical family of 3-6 persons for most of the
year.
DHW HEAT PUMP - PCWU 2.5kW
91.10.13
Article number
Measurement conditions
BASIC TECHNICAL PARAMETERS
28
Optimal working temperature range for this
equipment (above 15°C) allows reaching high
heating power up to 3 kW at relatively low electric
power consumption and heated water COP exceeding
4. However, the pump heating capacity depends not
only on supply air temperature, but also on utility
water heating temperature and air humidity.
Heating power, kW
Consumed electrical power, kW
Rated current, A
COP
2,51
0,67
2,9
3,8
Heating power, kW
Consumed compressor power, kW
Rated current, A
COP
3,05
0,80
3,5
3,8
Minimum water jet at ΔT 5 °C, m³/h / l/min
11
Water connections, inches
¾”
Maximum DHW temperature °C
60
Air temperature 7°C
Water temperature 30/35°C
according to the standard PN-EN 14511
(fan power and condenser resistance included)
Air temperature 20°C
Water temperature 40/45°C
according to the standard PN-EN 14511
(fan power and condenser resistance included)
COMPONENTS OF SOLAR SYSTEMS
Heat pump ventilation set
In summertime, it is possible to utilise air discharged from heat pumps, chilled to ca. 5÷10 K.
This allows cyclic cooling of rooms and moisture removal e.g. from laundry, drying room, larder,
fitness room, etc. Complete ventilation sets allow connecting heat pump in a convenient and
aesthetic way in order to divide air stream. It is possible to select manually the room being
cooled and/or fresh air intake location, depending on ventilation set chosen.
Standard ventilation set
Maximum length of air ducts should not exceed 4.5 metres on each side (suction and delivery).
Local resistance should be taken into account as follows: 1 elbow 90° = resistance equivalent
to 2 metres of duct length.
Extended ventilation set
Heat pump ventilation set
standard
extended
Article number
90.00.06
90.00.07
Hose DN160 length of 5 m
1 , pc
1, pc
90.00.02
Damper DN160 with bypass
1, pc
2, pcs
90.00.03
Adjustable long range nozzle DN150
1, pc
1, pc
90.00.04
Hose connector DN160
4, pcs
8, pcs
90.00.05
Self-adhesive micro-rubber, 470 mm
4, pcs
4, pcs
-
Information for single components
Ventilation set components:
Article number
Insulation union Gw/Gz ¾” PA66 GF30
In case of installations made of metal (e.g. copper or steel), union pieces are to be fitted onto
stub pipes of the PCWU heat pump tank. This prevents electrochemical corrosion of the tank in
case of faulty work of earthing system or electrical equipment in contact with water supply
system. Union pieces are included in the PCWU heat pump delivery and they are specified in
the price list as spare parts or parts added to the delivery.
Insulation union Gw/Gz ¾” PA66 GF30
Article number
Tabelka
90.00.01
Wall holder for PCWU 2.5kW heat pump
Wall holder for PCWU 2.5kW heat pump
Article number
Tabelka
90.00.08
6
75
mm
600 mm
 9
240 mm
Wall holder allows comfortable and aesthetic heat pump mounting onto wall in a room.
Mounting on vibroinsulators protects against transmission of vibrations onto building
structure.
EKONTROL – remote control system
Controllers for PCWU heat pumps (apart from the 200K-l.5kW type) allow work with EKO-LAN
modem in a system of remote control - EKONTROL (see p. 27.)
29
COMPONENTS OF SOLAR SYSTEMS
Plate heat exchangers
The plate heat exchanger is the most compact, effective and economic way to
exchange heat in many industrial and cooling applications.
Exchangers made of stainless steel provide exceptional corrosion resistance.
Their characteristic feature is fluted plate surface, which results in high
turbulence in a counter-current direction. This results in a highly efficient and
compact heat exchange. In combination with the small size and lower content
of the material, these may be the most economical way to exchange heat.
Especially in the case of larger solar systems, as well as with decreased
surfaces of heating coils, application of a plate heat exchanger can be the only
solution providing efficient heat transfer. Protection of the heat exchanger
against precipitation of sediments and scale should be taken into account by
maintaining the lowest possible temperature on the water side (60oC) and
maintaining hardness up to 20odH by possible use of softening station.
Basic characteristics of plate heat exchangers:
Parametr:
Value:
Plate material
AISI 316L
Connection material
AISI 316L
Solder material
Copper
Maximum operating temperature
225oC
Minimum operating temperature
-160oC
Maximum operating pressure
45 bar
The offer of heat exchangers includes 5 sizes adapted to cooperation e.g. with solar systems and different surfaces of solar
collectors:
Maximum numbers of solar collectors to be connected:
flat plate KS2000/KS2100
18
25
32
43
63
evacuated tube KSR10
14
20
25
35
50
TYPE OF EXCHANGER:
BL 50C-18H
BL 50C-24H
BL 50C-28H
BL 50C-38H
BL 50C-56H
91.00.00
91.00.01
91.00.02
91.00.03
91.00.04
Article number
30
COMPONENTS OF SOLAR SYSTEMS
6. INSTALLATION MATERIALS
Set ZNP
The expansion tank compensates for volume changes of the heat transfer fluid, which occurs
as a result of a temperature increase, maintaining a constant pressure in the system. The ZNP
Set includes an expansion tank, a wall mounting bracket and a connection hose for the tank.
UNIT TYPE:
Article number
Set ZNP 18DS
72.18.00
Set ZNP 24DS
72.24.00
Set ZNP 18DS
Art. no. 72.18.00
Solar heat transfer fluids
The solar fluid is a non-freezing and non-toxic solution of propylene glycol and water,
containing special corrosion inhibitors, which are to increase the longevity of the solar
system.
TYPE OF FLUID:
Article number
CORACON SOL 5F -28°C (package 5 kg)
80.32.70
CORACON SOL 5F -28°C (package 20 kg)
80.32.80
CORACON SOL 5F -28°C (package 30 kg)
80.32.90
CORACON SOL 5F -28oC 5kg Art. no. 80.32.70
Armaflex HT insulation resistant to UV radiation
Armaflex HT insulation resistant to UV radiation is the thermal insulation material to insulate
pipe sections (inlet and outlet) connected to solar collector battery. The insulation is resistant
to UV radiation, and also to high temperatures. Thanks to special shielding, it presents
increased resistance to mechanical damage. Each HEWALEX solar set is by standard equipped
with 2 running metres of this insulation material. For sets with 2 and 3 collectors the
insulation is provided in the dimensions of 18/13 mm, while for sets with 4 and 6 collectors'
insulation it is 28/13 mm.
TYPE:
Insulation ARMAFLEX AC 18/9 mm
Insulation ARMAFLEX AC 18/13 mm
Insulation ARMAFLEX HT 18/13 mm
Insulation Armaflex HT/S (2m)
Insulation ARMAFLEX AC 22/9 mm
Insulation ARMAFLEX AC 22/13 mm
UV resistance
YES
Armaflex HT 18/13 Insulation resistant
to UV radiation, Art. no. 80.18.15
Max.operating temp.
Article number
o
80.18.09
o
80.18.13
o
80.18.14
o
105 C
105 C
150 C
YES
150 C
80.18.15
-
105oC
80.22.09
-
o
105 C
80.22.13
31
OTHER SYSTEM COMPONENTS
C. Other system components
1. COLLECTOR HANDLES AND FLASHINGS - SELECTION
For mounting the universal construction directly on the ground, see the description of Universal Construction KSOL / Universal Construction KSRL. The
available handles and flashings provide secure mounting of solar collectors on a roof with any slope, covered with any material used in the market, as well as
their assembly within the building area. All handles and flashings have been designed in accordance to the standard guidelines determining the permissible
load, and the materials used in their construction are fully corrosion-resistant. The main division of handles and flashings for collectors has been made on the
basis of the three slope groups of the mounting surface, i.e. 30-60°, 20-30°, 0-20°.
Handles and flashings for sets with flat plate KS2000, KS2100, KS2400, KS2600 collectors
KSOL (KSAL) universal handle
The universal handle is used to attach flat plate collectors on sloped roofs with any kind of roofing and slope greater than 30 degrees. It is made of aluminium
bars connected with each other using aluminium connectors, thus creating a platform for two collectors. Other components of the handle are made of hot-dip
galvanized carbon steel (KSOL) or stainless steel (KSAL). All elements of the handle are powder coated in the colour of the collector, i.e. RAL 7022.
The basic size is the KSOL2 universal handle
required for mounting first
two collectors in a battery.
For each additional
collector in a battery
(maximum of 8 units in the
battery) KSOL-1 universal
handle should be used.
KSOL-2 universal handle (KS2000/KS2100)
Art. no. 21.42.02
KSOL-1 universal handle (KS2000/KS2100)
Art. no. 21.42.01
KSOL adjusting handle
The adjusting handle is a type of universal handle designed for a sloped roof with an angle of 20° to 30°. The adjusting handle differs from the universal
handle in that its upper hooks have adjustable height in order to increase the angle of the collectors' inclination by 10° with respect to the slope of the roof.
Hooks for adjusting handles are made of galvanized carbon steel. All elements of the handle are powder coated in the colour of the collector, i.e. RAL 7022.
The basic size is the KSOL2 adjusting handle
required for mounting first
two collectors in a battery.
For each additional
collector in a battery
(maximum of 8 units in the
battery) KSOL-1 adjusting
handle should be used.
KSOL-2 adjusting handle (KS2000/KS21000)
Art. no. 21.52.02
KSOL-1 adjusting handle (KS2000/KS21000)
Art. no. 21.52.01
Handles for collectors KS2400 and KS2600 are selected according to the same priniciples as for KS2000/KS2100 collectors.
32
OTHER SYSTEM COMPONENTS
Mounting handles for special purpose installations and arrangement
T
Flat plate collectors can be mounted in series (maximum 5
collectors), both in a vertical and horizontal position. For
mounting of KS2000/KS2100 single collectors there are
available universal handles (slope >30°) or universal
constructions (flat roof, ground). Handles' profiles and
connectors are painted in RAL 7022, the same as the colour
of the collector.
Universal handle for a single collector
horizontal: Art. no. 21.82.01
vertical: Art. no. 21.82.11
Universal construction for a single collector
horizontal: Art. no. 22.82.11
vertical: Art. no. 22.42.01
KSOL universal construction
The universal construction is designed for mounting flat plate collectors on roofs with a slope of less than 20° to the horizontal plane or on the ground. With
the universal construction solar collectors can also be installed on the walls of buildings. The universal construction is made of aluminium bars connected
with each other using aluminium connectors, thus creating a platform for two collectors. The remaining elements of the structure, which maintain it at the
right angle, and bases by means of which it is anchored to the ground, are made with hot-dip galvanized carbon steel. All elements of the construction are
powder coated in the colour of the collector, i.e. RAL 7022.
The basic size is the KSOL-2
universal construction
required for mounting first
two collectors in a battery.
For each additional
collector in a battery
(maximum of 8 units in the
battery) KSOL-1 universal
construction should be used.
KSOL-2 universal construction (KS2000/KS2100)
Art. no22.22.02
KSOL-1 universal construction (KS2000/KS2100)
Art. no 22.22.01
33
OTHER SYSTEM COMPONENTS
Flashing for the collector
The flashing is intended only for installation of KS2000/KS2100 (except the TAC
models) flat plate collectors in the roof plane. Collector area forms an integral part of
the roof plane, replacing tiles. This type of installation is mainly used in new buildings
or in case of roof repairs.
For practical reasons, it is recommended to use the flashings only on roofs with a
slope greater than 30 degrees and covered with ceramic tiles. The Flashing is made
entirely out of aluminium sheets, painted in umbra grey colour RAL 7022, which is
also the colour of the collector in the version with the lacquered finish.
During assembly, solar collectors are laid directly on the planking or on the formwork or tile batten of the roof structure. Our product range includes four types
of roof flashings. Ordering of the appropriate type and quantity sets depends on the number of solar collectors installed in a single area.
The basic size is SET 1 (F65163) flashing, which is required for integrating two collectors in a battery. For each additional collector in a battery (maximum of 8
units in the battery) F16564 flashing should be used. The KSL masking profile is a standard component included in SET 1.
Ordering of roof flashing SETS
Depending on the number of rows (b) and columns (a) of solar collectors placed within the roof flashing, the following number of SETS should be used
according to the guideline below:
+
SET 1
1
+
SET 2
(a-2)
SET 1 (F65163)
Flashing for 2 collectors Art. no. 27.01.00
34
+
SET 3
(b-1)
b
=
SET 4
(a-2) x (b-1)
a
SET 2 (F65164)
Flashing for an additional horizontal collector Art. no. 27.01.02
OTHER SYSTEM COMPONENTS
Flashings may also be used for installation flat plate collectors in a few rows (one after another). For that purpose SETS 3 and SETS 4 should be used.
SET 3 (RS-335)
Roof flashing - vertical expansion (into 2 side collectors)
Art. no. 27.01.03
SET 4 (RS-336)
Roof flashing - vertical expansion (to 1 middle collector)
Art. no. 27.01.04
Example of ordering of roof flashing SETS
For ordering of a roof flashing for installation of 8 collectors in two rows:
Installation variant:
- number of columns a = 4, number of rows b = 2
SET 1: 1 pc (quantity = 1)
SET 2: 2 pcs (quantity = a-2 = 4-2)
SET 3: 1 pc (quantity = b-1 = 2-1)
SET 4: 2 pcs (quantity = (a-2)*(b-1) = 2*1)
Mounting handles for evacuated tube collectors KSR10
KSRL universal handle
The universal handle is used to attach KSR10 evacuated tube collectors on sloped roofs with any kind of roofing and slope greater than 30 degrees. The KSRL
universal handle is a set of hooks made of stainless steel.
The basic size is the KSRL-2
universal handle, which is
required for mounting first
two KSR10 collectors.
For each additional
collector in a battery
(maximum of 6 units in the
battery) KSRL-1 universal
handle should be used.
KSRL-2 universal handle Art. no. 21.62.02
KSRL-1 universal handle Art. no. 21.62.01
35
OTHER SYSTEM COMPONENTS
KSRL adjusting handle
The adjusting handle differs from the universal handle in that its upper hooks have adjustable height in order to increase the angle of the collectors'
inclination by 10° with respect to the slope of the roof. Hooks for adjusting handles are made of galvanized carbon steel. The KSRL adjusting handles are
entirely made of hot-dip galvanized carbon steel and powder coated in RAL 7022 colour.
The basic size is the KSRL-2
adjusting handle, which is
required for mounting first
two KSR10 collectors. For
each additional collector in
a battery (maximum of 6
units in the battery) KSRL-1
adjusting handle should
be used.
KSRL-2 adjusting handle Art. no. 21.72.02
KSRL-1 adjusting handle Art. no. 21.72.01
KSRL universal construction
The universal construction is designed for mounting KSR evacuated tube collectors on roofs with a slope of less than 20° to the horizontal plane or on the
ground. With the universal construction solar collectors can also be installed on the walls of buildings. The KSRL universal construction is made of hot-dip
galvanized steel bars, which are powder coated in the umbra grey colour RAL 7022.
The basic size is the KSRL-2
universal construction,
which is required for
mounting first two KSR10
collectors. For each
additional collector in a
battery (maximum of 6 units
in the battery) KSRL-1
universal construction
should be used.
KSRL-2 universal construction Art. no. 22.32.02
KSRL-1 universal construction Art. no. 22.32.01
SUPPLEMENTARY COMPONENTS
Ground base
In case of installing solar collectors on the ground, both flat plate and evacuated
tube collectors, it is recommended to mount a base to be concreted in the
ground for the universal structure KSOL or KSRL. This set includes two supports.
The number of sets corresponds to the number of collectors in one battery.
Note: The ground supports are delivered as separate article and do not form a
part of the solar system set.
36
Ground base Art. no. 22.20.02
OTHER SYSTEM COMPONENTS
Piping system
Elastic tube SNP-DN16/SNP-DN20/SNP-DN25
Elastic tubes SNP-DN16, SNP-DN20 and SNP-DN25 made of stainless steel
are used for piping of heat transfer fluids in a solar collector system. The wall
of the elastic tube is made in the form of a lateral notch, which allows for
connection through the kneading system. Adequate flexibility makes the tube
easy to run in ducts of the building. Our offer includes an elastic tube with
nominal diameter of DN16 and DN20, in sections of 50 m, without or with 13
mm insulation. The pipe has been certified by National Institute of Hygiene.
Nominal
pipe diameter
DN16
DN20
DN25
Article number
Thermal insulation2)
Elastic tube SNP-DN16 [50 m]
80.43.01
-
Elastic tube SNP-DN16 in insulation AC/13 [50 m]
80.43.02
Armaflex AC
Elastic tube SNP-DN16 in insulation HT/13 [50 m]
80.43.03
HT/Armaflex
Elastic tube SNP-DN16 in insulation HT/13, UV resistant [50 m]
80.43.04
HT/Armaflex S
Elastic tube SNP-DN16 in insulation HT/13 [32 m]
80.43.34
HT/Armaflex
¾” nut - set for elastic tube SNP-DN16
80.43.05
-
¾” union - set for elastic tube SNP-DN16
80.43.06
-
Gasket 24/18 EPDM (10 pcs)
40.41.12
-
Pressing tool for elastic tube SNP-DN16
80.43.07
-
Elastic tube SNP-DN20 [50 m]
80.43.11
-
Elastic tube SNP-DN20 in insulation AC/13 [50 m]
80.43.09
Armaflex AC
Elastic tube SNP-DN20 in insulation HT/13 [50 m]
80.43.10
HT/Armaflex
Elastic tube SNP-DN20 in insulation HT/13 [32 m]
80.43.36
HT/Armaflex
1" nut for elastic tube SNP-DN20
80.43.13
-
Reduction Gw ¾"/Gz 1" - set
80.43.15
-
Stainless steel reduction Gw ¾"/Gz 1" Am
80.43.16
-
Gasket 30/24 EPDM (10 pcs)
40.41.11
-
1" union for elastic tube SNP-DN20
80.43.14
-
Pressing tool for elastic tube SNP-DN16/DN20
80.43.12
-
Elastic tube SNP-DN25 [50 m]
80.40.30
-
1 1/4" nut for elastic tube SNP-DN25
80.44.14
-
Pressing tool for elastic tube SNP-DN25
80.43.37
-
Product name
2)
Armaflex AC (max. operating temperature 105 °C); HT/Armaflex (max. operating temperature 150 °C, UV resistant); HT/Armaflex S (max. operating temperature 150 °C, resistance to UV
and mechanical damage).
37
OTHER SYSTEM COMPONENTS
Example of selection of SNP elastic tube:
Number of collectors
(KS2000/KS2100, KS2400, KS2600, KSR10)1)
2
3
4
5
6
7
8
Maximum total lenght of the tube (feed + return)
Stainless steel elastic tube
SNP-DN16
100 m
40 m
20 m
10 m
-
-
-
SNP-DN20
-
-
120 m
80 m
60 m
30 m
15 m
SNP-DN25
-
-
-
-
-
120 m
80 m
1)
Selection of diameters for a greater number of collectors should be consulted with HEWALEX
Elastic tube SNP-DN16
in insulation HT/13 Art. no. 80.43.03
Nut ¾” for SNP-DN16
Art. no. 80.43.05
Union ¾” for SNP-DN16
Art. no. 80.43.06
Elastic tube SNP-DN20
in insulation HT/13 Art. no. 80.43.10
Union 1" for SNP-DN20
Art. no. 80.43.14
Pressing tool for SNP-DN16/DN20
Art. no. 80.43.12
Handle for elastic tube in insulation
tube handle
Handle for elastic tube in insulation, allows for its fixing to the solid ground. The handle is
made of an ABS material, which ensures high mechanical strength of the handle and
allows the operation temperatures from -40 to +85 oC. UV resistance also allows the use of
external handles e.g. for running elastic tube in HT insulation.
Product name:
38
Article number
Handle for elastic tube in insulation DN 15-20 (10 pcs)
80.43.18
Handle for elastic tube in insulation DN 15-20 (30 pcs)
80.43.17
Handle for elastic tube in insulation DN 15-20 (50 pcs)
80.43.19
Base for elastic tube handle (5 pcs)
80.43.28
Base for elastic tube handle (15 pcs)
80.43.29
Base for elastic tube handle (25 pcs)
80.43.30
OTHER SYSTEM COMPONENTS
Copper piping accessories
Union Gz ¾”- 18 Art. no. 40.30.18
Half union L ¾”-18 Art. no. 40.20.18
ARMAFLEX AC 18/9 insulation
Art. no. 80.18.09
Article number
Product name:
Union Gz ¾”- 18 (for soldering into a Cu 18 mm pipe; includes a seal)
40.30.18
Union Gz ¾”- 22 (for soldering into a Cu 22 mm pipe; includes a seal)
40.30.22
Half union L ¾”-18 (for soldering into a Cu 18 mm; includes a seal)
40.20.18
Half union L ¾”-22 (for soldering into a Cu 22 mm; includes a seal)
40.20.22
Insulation ARMAFLEX AC 18/9 (for interiors, length of 2 m)
80.18.09
Insulation ARMAFLEX AC 18/13 (for interiors, length of 2 m)
80.18.13
Insulation ARMAFLEX HT 18/13 mm
80.18.14
Insulation ARMAFLEX HT 18/13 mm, UV resistant
80.18.15
Insulation ARMAFLEX AC 22/9 (for interiors, length of 2 m)
80.22.09
Insulation ARMAFLEX AC 22/13 (for interiors, length of 2 m)
80.22.13
OTHER SYSTEM COMPONENTS
Separator KS¾"
The KS ¾” separator is used to capture air bubbles in complex solar systems.
It is recommended to use one separator at the outlet of each solar battery in a complex system.
Product name:
Separator KS ¾”
Article number
45.01.00
Sensor housing KS¾”
KS¾” sensor housing is the cover of temperature sensor in a flat plate collector. It is used in case the
sensor is installed in a flat plate collector's off-mains stub pipe.
Product name:
Article number
Sensor housing KS ¾”
44.01.00
Sensor housing with a vent
44.01.01
39
OTHER SYSTEM COMPONENTS
Water expansion tanks
The ZNP water expansion tank compensates for volume changes of domestic hot water in storage
water heaters caused by temperature increase, maintaining the pressure in the system at a
constant value. The ZNP Set includes an expansion tank, a wall mounting bracket and a connection
hose for the tank.
Product name:
Article number
Set ZNP 11D DHW
72.11.02
Set ZNP 18D DHW
72.18.02
Set ZNP 24D DHW
72.24.02
Mixing valve ESBE VTA322 (¾”)
The ESBE VTA322 (¾”) mixing valve protects against burning with hot water at the point of DHW
use. The valve enables setting water temperature at its outlet from the water heater in the range of
35-60 °C.
Product name:
Mixing valve ESBE VTA322 (¾”)
Article number
70.70.00
Three-way valve CKF3325
The CKF3325 three-way valve is intended to control the flow of heating medium in hot and/or cold
water systems, as well as in solar systems (glycol solutions with the concentration of up to 50%).
Temperature range of the medium is from 2 to 75 °C. The valve is featured with three external 1”
stub pipes and a servomotor.
Product name:
Three-way valve CKF3325
Article number
90.00.00
Solar system manual filling pump
Manual pump is used for filling and supplementing the solar heating system with the heat transfer
fluid. It generates a maximum pressure of 3 bars for filling the system.
Product name:
Solar system manual filling pump
40
Article number
73.02.00
INSTALLATION SCHEMES FOR HEWALEX SOLAR SYSTEMS
Installation schemes for hewalex solar systems
The following schemes are to describe typical solar systems, which are used in household applications:
Scheme 1. Solar installation for domestic hot water (DHW) with a single water heater
Circulation
Solar collectors
Central heating boiler
DHW intake
Central heating
system
ZPS pump control unit
Cold water
Water heater
This scheme presents application of solar collectors for heating DHW in small domestic solar systems. Water in the heater is heated by solar collectors
and, in the case there is no solar radiation, a central heating boiler is activated to heat up the water in the heater.
Scheme 2. Solar system for domestic hot water (DHW) with the existing water heater
Circulation
Solar collectors
Central heating boiler
DHW intake
ZPS pump control unit
Central heating
system
Water heater
Cold water
Water heater
In case of already existing heating system with a water heater featured with one heat exchanger (coil), it is required to use another heater, in which the
water will be preheated by solar collectors and subsequently directed to the existing heater, coupled with the central heating unit.
41
INSTALLATION SCHEMES FOR HEWALEX SOLAR SYSTEMS
Scheme 3. Solar system for domestic hot water (DHW) and central heating support
Floor heating
Solar collectors
DHW intake
Central heating
boiler
Radiator heating
Circulation
ZPS pump control unit
Water heater
Heat pump
Cold water
CH boiler/ fireplace
This scheme presents heating of DHW and simultaneous support of central heating of the building. For this type of system, it is recommended to
use a buffer tank of special construction with a built-in DHW tank.
Scheme 4. Solar system for swimming pool heating
Floor heating
Solar collectors
DHW intake
Radiator heating
Circulation
Swimming pool water
ZPS pump control unit
Water heater
Central heating boiler
Cold water
CH boiler/ fireplace
When heating swimming pool water, solar collectors should be connected with proper heat exchangers, integrated within the water filtration
circuit. In such case it is recommended to use the same collectors to heat DHW as well.
42
INSTALLATION SCHEMES FOR HEWALEX SOLAR SYSTEMS
Scheme 5.Solar system for domestic hot water (DHW), central heating support,
and swimming pool heating
Circulation
DHW intake
Solar collectors
ZPS pump control unit
Cold water
Integrated heat pump
This scheme presents application of solar collectors for heating DHW and swimming pool water, as well as supporting central heating of the building. This
solution recommends using a special water heater with a built-in DHW tank. The system presented in the scheme is an example of optimal use of a greater
number of solar collectors, which during the summer supply heat to DHW and swimming pool and during the heating season assist central heating.
Scheme 6. Solar system for domestic hot water (DHW) with collectors located on eastern
and western roofing planes
Solar collectors
Central heating boiler
Circulation
DHW intake
ZPS pump control unit
Water heater
Cold water
Central heating system
Placing the collectors on eastern and western sides of the roof is recommended in case of inability to install them on the southern side. Collector batteries
are independent from one another thanks to the use of two separate circulation pumps. The controller turns on a specific pump depending on the
availability of solar radiation on the given roofing plane.
43
Contact details
Contact details
HEWALEX
33 Slowackiego Street
43-502 Czechowice-Dziedzice
Poland
Phone: +48(32)214 17 10, Sales Department: ex. 360
Fax. +48(32)214 50 04
e-mail: [email protected]
Solar collectors Heat pumps
www.hewalex.eu
44
www.hewalex.eu
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