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3

IMPORTANT

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 safety instructions. The meaning of this 
symbol is as follows: 

CAUTION! YOUR SAFETY IS INVOLVED. FAILURE IN FOLLOWING THESE 

INSTRUCTIONS MAY RESULT IN INJURY.

-  The solar pump station must be installed by a qualified technician in compliance with relevant national and/or local 

regulations.

- Install, commission and service the solar pump station correctly in accordance with the instructions given in this 
  manual to avoid malfunction and user endangerment. 

 

-  All connection fittings must be watertight.
-  When making the hydraulic connections ensure that threads are not mechanically overstressed. Over time, excessive 

stress may cause breakage with water leaks, property damage and/or personal injury. 

-  Water temperatures higher than 120°

F (

50°C) may cause serious scalding.

-  During installation, commissioning and servicing take the necessary precautions to prevent injury to persons caused 

by high temperatures.

CAUTION: Risk of electric shock. Discount the electric supply before carrying out any 

work. Failure in following these instructions may result in injury of persons or damage 

to property.

2

Product range

Code 278751A  Single-line solar pump station with 3 speed pump, return connection and flow meter scale 2 to 8 gpm.........connection 3/4” female
Code 278751    Single-line solar pump station without pump, return connection and flow meter scale 2 to 8 gpm..................connection 3/4” female

Code 279051A  Dual-line solar pump station with 3 speed pump, supply and return connections, flow meter scale 2 to 8 gpm
 

.....................................................................................................................................................................connections 3/4” female

Code 279051    Dual-line solar pump station without pump, supply and return connections, flow meter scale 2 to 8 gpm
 

.....................................................................................................................................................................connections 3/4” female

Code 278951A  Single-line solar pump station for drainback with 3 speed pump, return connection and flow meter scale 2 to 8

Technical specification

Materials

Shut-off valve body:  

brass

Check valve:  

brass

Temperature gauge:  

steel/aluminum

Air Separator

Body:  

brass

Instrument holder fitting

Body:  

brass 

Sealing gaskets: 

 EPDM

O-Ring seal elements:  

EPDM

Flow meter

Body:  

brass

Transparent level gauge:  

PS

Flow indicator:  

brass

Hydraulic seals:  

EPDM

Insulation 

Material:  

PP

Average thickness:  

3/4 inch (20 mm)

Density:  

2.8 lb/ft³ (45 kg/m

3)

Working temperature range: 

23 - 250°F (-5–120°C)

Thermal conductivity: 0.263 BTU·in/hr·ft²·°F 0.037 W/(m·K) 
                                                                               at 50°F (10°C)
Reaction to fire (UL94):  

class HBF

Summary of Contents for 279 series

Page 1: ...ntial controller optional is suitable for management and control of 10 pre configured solar thermal system arrangements installed in an optional insulation jacket that mounts to the top of the pump st...

Page 2: ...ply before carrying out any work Failure in following these instructions may result in injury of persons or damage to property 2 Product range Code 278751A Single line solar pump station with 3 speed...

Page 3: ...uge scale 32 to 320 F 0 160 C Connections 3 4 female straight thread Hose connection 3 4 M Fill drain connections with hose connection 9 16 OD 15 mm Pump model Solar 15 68 Body cast iron GG 15 20 Elec...

Page 4: ...with air vent and shut off valve with check valve 7 Supply temperature gauge 8 Return temperature gauge 9 Pre formed shell insulation 10 Shut off ball valve with check valve with temperature gauge ho...

Page 5: ...t s threaded fittings are tightened and tested in the assembly phase in the factory However use a pressure test to check for leaks during commissioning Make the electrical connections of the system as...

Page 6: ...ate recommendations when setting the flow rate After the first few operating hours the solar thermal system must be purged of excess air again both in the highest point and on the air separator if equ...

Page 7: ...always be installed in a vertical position A thermometric label on the back of the flow meter signals if the maximum permitted temperature 230 F 110 C has been exceeded white temperature not exceeded...

Page 8: ...ation diagrams Shut off valve Pump Air vent Expansion tank Temperature gauge Safety valve Automatic filling 2 Shut off valve Pump Air vent Expansion tank Temperature gauge Safety valve Automatic filli...

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