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NOTICE
The following instructions must be read and understood before installing, commissioning and
servicing the circulation unit.

The safety symbol is used in this manual to draw attention to the respective safety instructions.

The meaning of this symbol is as follows:

N.B! YOUR SAFETY IS INVOLVED. FAILURE IN FOLLOWING THESE INSTRUCTIONS MAY
RESULT IN INJURIES.

- The circulation unit for solar thermal systems must be installed by a qualified technician in compliance with

relevant national and/or local regulations.

- If the circulation unit is not installed, commissioned and serviced correctly in accordance with the instructions

given in this manual, it might not work properly and could put the user in danger.

- Make sure that all connection fittings are watertight.

- When realising hydraulic connections, make sure that threaded connections are not overstressed mechanically.

Over time, excessive stress may cause breakages with hydraulic leaks and damage to property and/or personal injury.

- Water temperatures exceeding 50°C may cause severe burns.

- When installing, commissioning and servicing, take the necessary precautions so that these temperatures will not

be hazardous for people.

CAUTION: Risk of electric shock. Remove the power supply before carrying out any work.
Failure in following these instructions may result in personal injury or damage to
property.

2

Product range

Code

268

050

Circulation unit with return connection 1–13 l/min

size 3/4”

Code

269

050

Circulation unit with flow and return connection 1–13 l/min

size 3/4”

Code

268

250

Circulation unit with return connection, with regulator DeltaSol

®

C+ 1–13 l/min

size 3/4”

Code

269

250

Circulation uniti with flow and return connection, with regulator DeltaSol

®

C+ 1–13 l/min

size 3/4”

Package content

The package contains:

Circulation units

• The solar circulation unit complete with front

and rear insulation.

• The wall fixing bracket.

Regulator

(only for versions complete with)

• Solar regulator DeltaSol

®

C+.

• 4 temperature probes.

Accessories:

• Bag of 2 M5 screws, S6 screw anchors and

washers.

Summary of Contents for DeltaSol 268050

Page 1: ...devices for optimum control of the circuit are fitted in the units They are available with flow and return connection or with return connection only Some versions are also complete with the digital r...

Page 2: ...ges with hydraulic leaks and damage to property and or personal injury Water temperatures exceeding 50 C may cause severe burns When installing commissioning and servicing take the necessary precautio...

Page 3: ...ment 1 13 l min Flow rate indicator accuracy 10 Pressure gauge scale 0 10 bar Temperature gauge scale 0 160 C Connections 3 4 F Hose connection 3 4 M Fill drain connections with 15 mm hose connection...

Page 4: ...mperature indication 13 Regulating keys 14 Temperature probe 15 Stainless steel probe pocket code 257004 optional 16 Hose connection only for versions with DeltaSol C regulator 1 2 3 4 5 8 9 11 10 16...

Page 5: ...d in the assembly phase at the factory However when commissioning it is necessary to check the seal of the fittings performing a pressure test Make the electrical connections of the system as specifie...

Page 6: ...e deaerated again both in the highest point and on the air separator on the versions where this is contemplated Once deaeration has been completed check the system pressure and if necessary restore to...

Page 7: ...m every six months by using the deaerator A Full closing and opening of the valve The valve can be completely opened or closed A slot on the obturator stem indicates the status of the valve Correction...

Page 8: ...e nor me ISPESL 0 2 4 6 8 10 bar CL 2 5 1 13 11 9 7 5 3 l min 1 13 11 9 7 5 3 l min 1 13 11 9 7 5 3 l min a Shut off valve Pump Air vent Expansion vessel Temperature gauge Safety relief valve Automati...

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