Regulus KPG1-ALC, Installation And Operation Manual

17

Fig. 22a: 
The recom-
mended 
method of 
collector 
intercon-
necting

Fig. 22b: 
Alternative 
one-sided 
connection 
method

Fig. 23: Col-
lector con-
necting (the 
pic. shows 
connection 
of the upper 
fi tting; the 
lower fi tting 
shall be 
connected 
and tighte-
ned in the 
same way.)

Collectors may be also connected as shown in Fig. 22b. 
This kind of connection is permitted when only 

max. 2 

collectors

 are used and 

the max. fl ow rate is 1l/min/

collector

. Then the cold liquid inlet is at one side bottom 

and the hot liquid outlet is at the same side top. Both the 
other ends shall be plugged.
At the inlet into a collector array, a brass elbow shall be 
installed with a reducing piece to the connecting pipe. 

A brass X-piece shall be installed to the outlet from the 
collector array that will enable connection to the piping, 
sheath installation for the collector temperature probe 
and eventual installation of a ball valve and an automatic 
air discharge valve. The brass elbow and X-piece are 
involved in Regulus connection kit, code 7710 and in 
Connection kit for landscape installation, code 14134 

All solar components must be carefully and safely sealed 
and must be made of material resistant to glycol and 
temperatures up to 160 °C. For connection piping we 
recommend using KOMBIFLEX stainless-steel 

fl

 exible 

pipes, or copper pipes connected by soldering.

In no event plastic tubes can be used for inlet/outlet 
piping as they do not meet the operation requirements 
for solar systems.

Pipes for collectors can be lead through disused chim-
neys, ventilation shafts or grooves in a wall. In order to 
prevent high thermal losses through convection, open 
shafts shall be properly sealed. Also thermal dilatation 

shall be remembered and pipes 

fi

 tted with compensators 

or other compensation elements. 

Piping shall be connected to the house earthing.

Pipes of the solar system must be 

fi

 tted with thermal in-

sulation, so that thermal dissipation from the pipes does 
not deteriorate a total ef

fi

 ciency of the solar system. The 

thermal insulation must be resistant to temperatures 
up to 160 °C, for outdoor piping also a UV protection is 
essential as well as non-deliquescence of the material. 
For indoor piping, the thermal insulation should be at 
least 13 mm thick, for outdoor piping at least 19 mm.