Connection Fittings For Primary (Solar) Loop; Pipe And Fitting Connections - Viessmann Solar-Divicon-HX Installation, Start-Up And Service Instructions Manual

Connection fittings for primary (solar) loop

The connection to the solar thermal system is carried
out fast, pressure-proof and without soldering with the
supplied compression fittings.
1. Push the union nut 2 and the cutting ring 3 onto
the copper pipe 1. The pipe must protrude at least
d" from the cutting ring in order to ensure the force
transmission and the sealing.
2. Insert the support sleeve 4 (supplied with the Solar-
Divicon-HX) into the copper pipe.
3. Insert the copper pipe with the plugged-on individual
parts 2, 3 and 4 all the way into the housing of
the compression fitting (5) mounted on the ball valves
of the Solar-Divicon-HX.
4. Tighten the union nut 2 manually to start.
5. Tighten the union nut 2 by rotating with wrench one
full turn. Secure the housing of the compression fitting
5 with a second wrench against distortion in order to
avoid damaging the sealing ring.

Pipe and fitting connections

1. Mount the solar safety equipment to the connection
above the return ball valve using the gasket supplied
in the accessory kit.
2. Connect the expansion tank below the pressure gauge
using c" piping.
3. Mount the expansion tank.
Note: The expansion tank must not be connected, or
must be isolated during flushing and filling in order to
avoid that dirt particles are washed in.
4. Connect a discharge line to the pressure relief valve in
the solar circuit. The jug for the "Tyfocor-HTL" solar
fluid can be used for this purpose.
5. Connect an ASME stamped pressure relief valve
(not part of delivery) to the NPT male nipple (A) in
the storage tank loop. Maximum pressure is 150 psig.
6. Connect a discharge line to the pressure relief valve
in the storage tank circuit and pipe to a floor drain.
7. Before connecting the expansion tank, pressurize the
air cushion of the expansion tank according to the
instructions in the Vitosol manual.
For additional information, follow the
procedures in the Vitosol Start-up,
Service and Operating Instructions.
min. d"
Fig. 6 Primary loop piping connection
connection for
discharge line
connection for
expansion tank
Fig. 7 Connection details
Installation
1
2
3
4
5
drain valve
Expansion
tank
Sp1
A
9