STIEBEL ELTRON SOL 25 PLUS - Manual (Page 61)

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Figure 31: Interconnection of collectors using flexible compensator
tube (p/n 170804).
Install the collector immersion sleeve (sensor well) at the outlet of
the collector array, as shown in
Figure 2. It is imperative that the
sensor be placed at the collector/array outlet, not inlet, so that the
collector temperature can be properly detected by the controller.
The system will not work properly without the correct location of the
sensor.
IMPORTANT: THE SENSOR MUST BE PLACED AT THE COLLECTOR/
ARRAY OUTLET, NOT INLET, SO THAT THE COLLECTOR
TEMPERATURE CAN BE PROPERLY DETECTED BY THE CONTROLLER.
Coat the collector sensor with thermally conductive paste and push
it into the immersion sleeve as far as it will go. Do not attempt to
twist or readjust the connections once they have been installed. The
return piping can now be connected to the unoccupied external
thread of the R 3/4” adapter on the collector immersion sleeve
(sensor well).
Immediately after installation, run a pressure/leak test, fill and flush
the system with propylene glycol mixture (heat transfer medium),
and place the system into service as described in Section 8.0.
Air Vent
S.S. Tube with
3/4 " G Union
Seals Collector Nipple
(3/4" BSPP male thread *)
* Mating threads include:
• 3/4" G (European)
• 3/4" BSPP
• (7/8" UFT)
Angle Brackets
7. SETTINg UP ANd INTERCONNECTINg ThE COLLECTORS
WARNING: HAVE LIGHTNING PROTECTION MEASURES CARRIED
OUT BY PROFESSIONALS.
Secure each collector at the top and bottom with eight (8) angle
brackets – four along the top profile frame and four along the
bottom – by inserting M10 bolts (from kit 185545 or kit 185546)
into the profile rail’s bolt channel, placing the angle brackets into
position, and tightening the bolts. See
Figure 30. (For horizontal
mounting systems, secure each collector at the top and bottom with
sixteen (16) angle brackets – eight along the top profile frame and
eight along the bottom.)
Figure 30: Securing Collectors To Frame Using Angle Brackets.
The collector pipe nipple connections are located on the top of
the collector in the case of vertical mounting or on the sides
with horizontal mounting. It is recommended that collectors be
interconnected by means of a “compensator” (flexible stainless steel
tube, p/n 170804), which comes with every R2 (185546) mounting
frame. One should also be ordered with every SFC001 frame splice
kit if connectors are to be connected in a row. The compensator
allows thermal expansion of the collectors, support frames, and
piping to occur without over-stressing the fittings and seals. The
collector pipe nipples may also be connected to field-supplied
piping with either 7/8” UFT, 3/4” G (European), or 3/4” BSPP thread.
See Figure 31.
Installation of the compensator tube is followed by placement of
thermal insulation (supplied by the customer).
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