537379 1 Laing D5 Series Solar Pump Brochure User Manual
537378 1 Laing D5 Series Solar Solar Pump Brochure 537378_1_Laing D5 Series Solar Solar Pump Brochure
537378 1 Laing D5 Series Solar Pump Brochure 537378_1_Laing D5 Series Solar Pump Brochure
537380 1 Laing D5 Series Solar Pump Brochure 537380_1_Laing D5 Series Solar Pump Brochure
User Manual: Pump 537379 1 Laing D5 Series Solar Pump Brochure
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The first DC spherical motor pump for direct connection
to photovoltaic panels with automatic performance
optimization using Maximum PowerPoint (MPP) tracking.
• Start-up Power Requires Less Than 1 Watt
• Directly Connects to P.V. Panel
• Economic and Powerful
• Wide Variability
• ECM Technology
• Shaft-less Spherical Motor
D5 Solar
BR-20A
HOT WATER. HOT SAVINGS.
Application
• The D5 solar pump can be used for most circulation pump applications without connection to the
power grid but with direct connection a photovoltaic panel.
• This pump is perfect for single family home thermal solar systems or any circulation pump
application where conventional power is not available.
Design
• The only moving part is a hemispherical rotor/impeller unit which sits on an ultra-hard, wear-
resistant ceramic ball.
• There are no conventional shaft bearings or seals eliminating bearing noise and seal leaks.
• This pump is robust and has an estimated service life in excess of 50,000 hours.
• The self-realigning bearing is lubricated and cooled by the media.
• Even after prolonged shutdown, the pump will start reliably.
• All parts exposed to the uid are completely corrosion resistant.
Soft Start-up
• When the photovoltaic panel provides sufcient power, the pump goes through the alignment
phase by turning the rotor into the position required for start-up.
• The processor then waits until the capacitor is sufciently charged.
• This enables a start-up with minimal power (less than one watt).
Over-temperature Safety Device
• The D5 Solar pump comes with an integrated over-temperature safety device which shuts off the
pump electronics when reaching temperatures over 230°F.
• When the temperature of the pumped uid is below 203°F the pump will function normally.
• The temperature of the electronic components is inuenced by the temperature of the pumped
media.
• After reaching a critical temperature 203°F the pump will lower its speed automatically in order to
avoid a total shutdown.
• However, if the temperature continues to rise the pump will eventually shut down completely and
automatically restart after cooling down.
Maximum Power Point (MPP) tracking
Every three seconds the processor will modify its operating point
on the voltage-current curve of the PV panel to nd the point
of maximum performance. At this point, the pump achieves the
maximum rpm and therefore the maximum performance. There
is no need for a separate performance device. The ecocirc Solar
pump will always nd its best operating point under any given
light and temperature conditions.
Current I
Voltage U
200 W/m2
400 W/m2
600 W/m2
800 W/m2
1000 W/m23 sec
3 sec
D5 Solar Pump
Hot Water. Hot Savings.
Typical Current-Voltage-curve of a photovoltaic panel. By employing MPP
tracking every three seconds, the D5 pumps always automatically achieve
maximum performance at any given insolation.
Technical Data
Motor Design: Electronically commutated spherical motor with permanent magnet rotor/impeller
Voltage: 12 - 24 Volt
Power Consumption*: Min. start-up power consumption less than 1 Watt, max. power consumption 22 Watts
Current Draw: 0.25 - 1.46 A
Acceptable Media: Domestic hot water, heating water, water/glycol mixtures, other media on request**.
Environment: IP 42
Insulation Class: Class F
* Power consumption and start-up may vary in different installations
** Please check pump performance with more than 20 % glycol
Solar Collector
Antifreeze Fluid in
Collector Loop Only
Hot Water to House
Cold Water Supply
Solar Storage/ Back-up
Water Heater
Double Walled Heat
Exchanger
D5 SOLAR Pump
Check Valve
Solar Panel
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D5 SOLAR/090B
GPM
Feet of Head
GPM
Feet of Head
1.18” 1.37”
2.7”
1/2”
1/2”
1 - 18 UNS
3.07”
4.21”
3.14”
3.15”
2.56” 2.56”
D5 SOLAR/710B and
D5 SOLAR/720B
D5 SOLAR/090B
Available Models
D5 SOLAR/710B
Model Pump Housing
Material
Max. System
Temperature Housing Design Connection Max. Pressure
D5 SOLAR/720B Brass 203°F Inline 1/2’’ Sweat connection 150 PSI
D5 SOLAR/710B Brass 203°F Inline 1/2’’ Female pipe thread 150 PSI
D5 SOLAR/090B Brass 203°F Inline / BV+CV+PV* 1/2’’ Union Sweat 150 PSI
* built-in ball valve, check valve and purge valve
*Less than 0.25% Pb by weight on wetted parts surface areas.
Part Number Description Model Weight
LMB15107992 Lead Free Brass* Solar Circulator 1/2” Sweat D5-SOLAR/720B 2 lbs.
LMB15107993 Lead Free Brass* Solar Circulator 1/2” NPT D5 SOLAR/710B 2 lbs.
LMB15107995 Lead Free Brass* Solar Circulator 1/2” Union Sweat D5 SOLAR/090B 2 lbs.
D5 SOLAR/720B
Xylem Inc.
3878 S. Willow, Suite 104
Fresno, CA 93725
Tel: (559) 265-4730 (800) 554-6853
Fax: (559) 265-4740 (800) 453-7523
www.xyleminc.com/brands/laingthermotech
Laing Thermotech is a trademark of Xylem Inc. or one of its subsidiaries.
© 2012 Xylem, Inc. BR-20A November 2012
