System Concepts; Laying Connection Pipes - Daikin EKSV21P Installation Manual

3 x Installation
3.2

System concepts

DAIKIN Solar system are generally assembled in accordance with the installation concept shown below. This also includes the
possibility of connection on the opposite side of the flat solar panels in each case.
– The connection on opposite sides is recommended by DAIKIN (possible from 1 flat solar panel upwards).
– Alternate side connection is acceptable for both DAIKIN Solar system systems (
Fig. 3-1
3.3

Laying connection pipes

Installation instructions concerning differences between unpressurised and pressurized system
With solar panels connected at opposite ends, the whole
solar panel array must be set up with at least 0.5 %
gradient to the lower panel connection (return flow).
The connection pipe must be set up with a continuous gradient
of at least 2 % and without any counter gradient.
Fig. 3-2
Installation instructions
16
For Solar panels on-roof installation of the flat solar panels, the roof surface must be inclined at an angle of
15° to 80°.
The flat solar panels EKSV26P and EKSH26P can be installed on flat roofs. Further information can be found
in the installation instructions for the DAIKIN Solar system flat roof framework.
The flat solar panels EKSV21P and EKSV26P can be integrated into the roof surface. Further information can
be taken from the DAIKIN Solar system in-roof installation instructions.
Alternately connected Solar system solar panel with hot water storage
tank EKHWP* (shown in the drain-back system
Non-pressurised system (Drain Back)
Installation instructions
+
).
Pressurised system
No particular minimum gradient of the solar panel array is
required. A gradient from the lower (return flow) connection
should however be avoided.
The connection pipe between the solar panel array and the hot
water storage tank must be made of pressure-resistant metal
piping (CON XP16 / CON XP20 or Cu Ø 22 mm). Using plastic
piping is not allowed.
).
EKSV21P/EKSV26P/EKSH26P
Solar panels on-roof installation
008.1618444_00 – 12/2012