Viessmann VITOSOL 200-T SP2A Instruction manual

Technical Data Manual
5782 590 - 02 01/2015
Model Nos. and pricing: see Price List
VITOSOL 200-T Type SP2A
Vacuum tube collector
For the heating of DHW, supplement heating systems
and swimming pool water via heat exchangers as well
as for the generation of process heat.
For installation on pitched and flat roofs, as well as for
freestanding installations and on walls.
VITOSOL
r
200-T SP2A
Product may not be exactly as shown
Vacuum tube collector based on the heat pipe principle
For the utilisation of solar energy

Vitosol 200-T, SP2A Technical Data
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Product Information
Product Description
2
Legend
ADouble pipe heat exchanger made from stainless steel
BCondenser
CAbsorber
DHeat pipe
EEvacuated glass tube
The Vitosol 200-T, type SP2A vacuum tube collector is
available in the following versions:
■1.26 m2with 10 tubes
■1.51 m2with 12 tubes.
■3.03 m2with 24 tubes.
Benefits
■Highly efficient vacuum tube collector based on the
heat pipe principle for high operational reliability.
■Can be universally installed anywhere, either vertically
or horizontally, on roofs, as well as for horizontal
freestanding installation on flat roofs, as well as walls.
■Special balcony module (1.26 m2 version) for
installation on balcony railings or walls.
■The absorber areas with a highly selective coating
are integrated into the vacuum tubes and therefore
are not susceptible to contamination.
■Efficient heat transfer through fully encapsulated
condensers, with the Duotec double pipe stainless
steel heat exchanger.
■Tubes can be rotated (up to 25°) for optimum alignment
with the sun, thereby maximizing the energy utilization.
■Dry connection, meaning tubes can be fitted or replaced
when the system is fully operational.
■Highly effective thermal insulation for minimized heat
losses from the header casing.
■Easy installation through the Viessmann assembly and
connection systems.
The Vitosol 200-T, type SP2A can be installed on
sloped or flat roofs as well as horizontally (laying flat)
or freestanding as well as on walls. On sloped roofs the
collectors may be positioned vertically (tubes at right
angles to the roof ridge) or horizontally (tubes parallel to
the roof ridge).
A highly selectively coated metal absorber is incorporated
inside each vacuum tube. It ensures high absorption of
insolation and low emissions of thermal radiation.
A heat pipe filled with an evaporation liquid is arranged
on the absorber. The heat pipe is connected to the
condenser. The condenser is located inside the Duotec
double pipe heat exchanger made of stainless steel.
The system is referred to as a “dry connection”,
i.e. tubes can be rotated and replaced even when the
system is filled and is pressurised. The heat is transferred
from the absorber to the heat pipe. This causes the liquid
to evaporate. The vapor rises into the condenser. Heat is
transferred by the heat exchanger with its copper
manifold, inside which lies the condenser, to the
heat transfer medium streaming past, and the vapor
condenses. The condensate returns back down into
the heat pipe and the process repeats.
The angle of inclination must be greater than zero to
guarantee circulation of the evaporator liquid in the
heat exchanger. Deviations from south can be partially
compensated for by rotating the vacuum tubes up to 25°.
Up to 161 ft2(15 m2) absorber area can be connected
to form one collector array. For this purpose, the standard
delivery includes flexible connection pipes with O-rings.
The connection pipes are insulated and concealed with
an aluminum cover.
A connection set with clamping ring fittings enables the
collector array to be readily connected to the pipes of the
solar circuit. The collector temperature sensor is fitted
into a sensor well inside the collector header casing.
Delivered condition
Packed in separate boxes:
■Vacuum tubes, 10 pieces per box (for model 1.26 m2)
and 12 pieces per box (for model 1.51/3.03 m2)
■Header casing with tube retainer rails

Vitosol 200-T, SP2A Technical Data
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Product Information
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Specification
Vitosol 200-T 1.26 m21.51 m23.03 m2
Number of tubes 10 12 24
Gross area ft2(m2) 21.3 (1.98) 25.4 (2.36) 49.7 (4.62)
Absorber area ft2(m2) 13.6 (1.26) 16.3 (1.51) 32.6 (3.03)
Aperture area ft2(m2) 14.3 (1.33) 17.2 (1.60) 34.3 (3.19)
Installation position (see figure below) A,B,C,D,E,F
Spacing between collectors in. (mm) -- 3.5 (88.5) 3.5 (88.5)
Dimensions
Width ‘a’
Height ‘b’
Depth ‘c’
in. (mm)
in. (mm)
in. (mm)
34.8 (885)
88.2 (2241)
5.9 (150)
41.5 (1053)
88.2 (2241)
5.9 (150)
81.1 (2061)
88.2 (2241)
5.9 (150)
The following values apply to the absorber area:
(as tested by TUV testing laboratories in Europe)
– Optical efficiency
– Heat loss factor k1
– Heat loss factor k2
%
k1 W/(m2· K)
k1 W/(m2· K2)
78.5
1.42
0.005
78.5
1.42
0.005
78.5
1.42
0.005
Thermal capacity kJ/(m2· K) 8.4 8.4 8.4
Weight lb(kg) 73 (33) 86 (39) 174 (79)
Liquid content
(heat transfer medium)
USG (L) 0.198 (0.75) 0.23 (0.87) 0.41 (1.55)
Permissible operating pressure psig (bar) 87 (6) 87 (6) 87 (6)
Maximum stagnation temperature °F (°C) 557 (292) 557 (292) 557 (292)
Connection Ø in. (Ø mm) ¾ (22) ¾ (22) ¾ (22)
Tested quality
The collectors meet the requirements of the “Blue Angel”
eco-label to RAL UZ 73.
Tested in accordance with Solar KEYMARK, EN 12975
and SRCC 0G-100
CR Collector return
CS Collector supply

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Installation on Sloped Roofs
4
Design Information
Required roof area
Vitosol 200-T 1.51 m23.03 m2
Vertical installation Horizontal installation Vertical installation Horizontal installation
a in.
(mm)
88.2
(2240)
41.5 + 3.5*
(1053 + 89*)
88.2
(2240)
81.1 + 3.5*
(2061 + 89*)
b in.
(mm)
41.5 + 3.5*
(1053 + 89*)
88.2
(2240)
81.1 + 3.5*
(2061 + 89*)
88.2
(2240)
* space between collectors if multiple units are installed in an array.
Add dimension b for each additional collector.
Installation with roof brackets
■This method of fixing can be applied universally on
all common roof covers.
■The fixing system comprises roof brackets, mounting
rails, clamping brackets and screws.
■Forces are applied to the roof structure in various ways,
including via the roof brackets and the roof cover. Roof
covers can be very different. Consequently, damage
cannot be completely excluded in the case of applied
loads.
Mounting bracket
Note: During installation, e.g. on sheet steel roofs,
the mounting rails are secured directly on to
the mounting brackets with T-bolts.
Use on-site fixing options to secure the brackets,
to the substructure.

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Design Information
Installation on Sloped Roofs (continued)
Horizontal installation
Vertical installation
Legend
AHeader casing
BMounting rail
C Tube retainer
DMounting bracket
ERoof bracket
F Vacuum tube
Legend
AVacuum tube
BClamping bracket
CTube retainer
DMounting rail
ERoof bracket
F Header casing
GMounting plate
Refer to the Vitosol 200-T, SP2A Installation
Instructions for all mounting hardware
dimensions and detailed installation instructions.

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Installation on Flat Roofs
Design Information
When installing collectors, maintain the minimum
clearances towards the roof edge in accordance with
DIN 1055.
If the roof size necessitates a split array, ensure that
sections of the same size are created. The collectors can
be secured on any solid substructure or on concrete slabs.
When installing collectors on concrete slabs, secure them
with additional ballast against slippage, tipping and lifting.
Slippage is the movement of the collectors on the roof
surface due to wind, because of insufficient friction
between the roof surface and the collector fixing system.
Collectors can be secured by guy ropes or by being fixed
to other roof structures.
Legend
AFootplates
BRear support
C Collector support
Collector supports with fixed angle of inclination
Angle of
inclination
30° 45° 60°
a in.
(mm)
95
(2413)
86.6
(2200)
72.4
(1838)
Vertical tube installation (elevated)
Ballast and max. load on the substructure
Calculation in accordance with DIN 1055-4, 3/2005
and DIN 1055-5, 7/2005 or applicable local codes.
Two support slabs each, both A and B are required
for every collector.
Ballast weight requirements, as well as the calculation of
additional live loads (due to installation of solar collectors),
must be evaluated by a professional structural engineer.
Note: For calculating z, see page 7.
Refer to the Vitosol 200-T, SP2A Installation
Instructions for all mounting hardware
dimensions and detailed installation instructions.
Combination x in.
(mm)
y in.
(mm)
1.51 m2/1.51 m220/20
(505/505)
23.5
(595)
1.51 m2/3.03 m220/40
(505/1010)
33.5
(850)
3.03 m2/3.03 m240/40
(1010/1010)
43.5
(1100)
Vitosol 200-T SP2A
Legend
AFront support slab
BRear support slab
Collector supports with adjustable angle of inclination
Legend
AFront support slab
BRear support slab

Vitosol 200-T, SP2A Technical Data
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Design Information
Installation on Flat Roofs (continued)
Example:
Toronto is approximately located on latitude 43° north.
In the northern hemisphere, this value is calculated as
follows:
Angle = 90° - 23.5° - latitude
= 90 - 23.5 - 43 =23.5
h = 2241 mm
= 45°
= 23.5°
Determining the collector row clearance z
At sunrise and sunset (when the sun is very low),
shading cannot be avoided when collectors are arranged
behind one another. To keep the reduction in yield within
acceptable parameters, observe specific row clearances
(dimension z). When the sun is at its highest on the
shortest day of the year (21.12), the rows at the back
should be free of shading. The angle of the sun (at
midday) on 21.12. must be used to calculate
the row clearance.
z = sin (180°– (+))
h sin 
z = 2241 mm · sin (180° – 68.5°)
sin 23.5°
z = 205.9 in. (5229 mm)
z = Distance between collector rows
h = Collector height (for dimensions see “Specification”
for the relevant collector)
= Angle of collector inclination
= Angle of the sun

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Installation on Flat Roofs
Design Information
Horizontal installation on flat roofs (non-elevated)
Yield can be optimized by rotating the vacuum tubes to
25° to the horizontal plane. The collector must be sloped
greater than 0°.
Ballast and maximum load on the substructure
Calculation in accordance with DIN 1055-4, 3/2005 and
DIN 1055-5, 7/2005 or applicable local codes.
Two support slabs each, both A and B are required for
every collector.
Ballast weight requirements, as well as the calculation of
additional live loads (due to installation of solar collectors),
must be evaluated by a professional structural engineer.
ASupport slabs A
BSupport slabs B
Installation on Walls
Horizontal installation on walls
For installation on balconies, there is a special 10-tube
1.26 m2collector model.
Yield can be optimized by rotating the vacuum tubes
to 25° to the vertical plane. Run the hydraulic pipe
connections from below and use the air vent at the high
point of the manifold.
AFacade or balcony

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Design Information
Installation Examples
Take venting into account when engineering the collector array.
Note: Max. 161 ft2(15 m2) absorber collector area can
be connected in series to form a single array.
Vertical installation on sloped roofs, horizontal installation
or installation on supports
Single row installation; connection from the left or right
ACollector temperature sensor
Installation in several rows, connection from the left or right
ACollector temperature sensor
Horizontal installation on a sloped roof or wall mount.
Single sided connection from below required. U-pipe
fitting with integrated air vent must be used.
1 collector array
With this type of connection, the “Evacuated tube
collector” function at the SCU control must be enabled.
2 or more collector arrays (≥4m2)
With this type of connection, the “Evacuated tube
collector” function at the SCU control must be enabled.
ACollector temperature sensor
ACollector temperature sensor

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Design Information
Pressure Drop
A1.26/1.51 m2
B3.03 m2
Flow Rate
Pressure Drop
Relative to water, corresponds to Tyfocor LS at
approximately 140° F (60° C).
Note: For multiple collector arrays, use the total flow
for the whole array to calculate the pressure drop.

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Flow Rate
High-flow mode
High-flow mode results in low temperature spread across
the collectors, but may require bigger pump and pipe
sizes for large systems. High-flow mode is best suited for
small scale systems consisting of less than 50 tubes, and
should always be used for the 1.26 m2 balcony module.
Medium and low-flow modes
Medium and low-flow modes result in smaller pipe and
pump sizes, but higher temperature spread across the
collectors. Low-flow and medium-flow modes should
be used for larger collector arrays consisting of greater
than 50 tubes, to avoid high friction losses and high fluid
velocities within the collector, and reduce the size of
supply and return piping requirements.
Use the charts below to determine the required flow rate,
based on the size of the collector or collector array.
Flow High flow mode
USG/min (L/min)
Medium flow mode
USG/min (L/min)
Low flow mode
USG/min (L/min)
Model 1.26 m2 (10 tube collector) 0.55 (2.1) NR NR
Model 1.51 m2 (12 tube collector) 0.6 (2.3) 0.4 (1.5) NR
Model 3.03 m2 (24 tube collector) 0.86 (3.3) 0.67 (2.5) 0.47 (1.78)
Individual collector flow rates
Recommended collector array flow rates
Flow High flow mode
USG/min (L/min)
Medium flow mode
USG/min (L/min)
Low flow mode
USG/min (L/min)
10 tube collector array (model 1.26 m2) 0.55 (2.1) -- --
12 tube collector array (model 1.51 m2) 0.6 (2.3) -- --
24 tube collector array (model 3.03 m2) 0.86 (3.3) -- --
36 tube collector array* 1.46 (5.6) -- --
48 tube collector array* 1.72 (6.6) -- --
60 tube collector array* 2.32 (8.9) -- --
72 tube collector array* 2.58 (9.9) 2.01 (7.5) --
84 tube collector array* -- 2.41 (9.0) --
96 tube collector array* -- 2.68 (10.0) 1.9 (7.2)
* Collector arrays are combinations of collector model 1.51 m2 and/or model 3.03 m2.
SP2A collectors have minimum required flow rates (low-
flow mode), and maximum flow rates (high-flow mode).
The collectors must operate within this range, and the
designer must choose a flow rate based on the specific
parameters of the system.
Design Information

Vitosol 200-T, SP2A Technical Data
5782 590 - 02 Technical information subject to change without notice. Printed on environmentally friendly
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