Solar Thermal Information
60
NA26711
DC-EMC solar pump
Application
Technical specification
Product range
Code: NA26711 DC-ECM solar pump operates on 8 to 25 VDC 1” male union thread
CALEFFI
Dimensions
A
1”
B
5
1/8”
C
3 1/8”
D
3 1/4”
Code
NA26711
Weight (lb)
3.0
A
B
CD
The DC-ECM solar pump can be used for most circulation pump
applications without connection to the power grid. Highly efficient, the
DC-ECM solar pump can be connected directly to a photovoltaic
panel and is characterized by its small size, high efficiency, and
extremely low power consumption. The shaftless spherical motor
technology provides maintenance free andprovides quiet service and
maintenance free life.
This pump is ideal for single family home thermal solar systems or any
circulation pump application where conventional power is not
available.
(Shown with two 3/4” sweat unions)
(not included, see page 2)
Materials
Pump body: brass
Bearing: ceramic ball
Seals: EPDM
Impeller: wet rotor
Motor: permanent magnet ECM
Performance
Voltage: 8 - 25 VDC
Power consumption: 3 - 55W
Current draw: 0.13 - 2.1 A
Insulation class: IP 42 / Class F
Suitable fluids: water, glycol solution
Max percentage of glycol: 50%
Max. working pressure: 150 PSI (10 bar)
Max. temperature: -10° F to 230° F (-10 to 110°C)
Flow rates: 12V up to 5 gpm (19 lpm)
24V up to 7 gpm (26.5 lpm)
Pump head: 12V up to 10 ft (3.0 m)
24V up to 15 ft (4.6 m)
Connections: 1” male union half threads
Face to face dimension: 5
1/8”(130 mm)
CALEFFI
Flexible stainless steel insulated piping
SolarFlex
NA3500
Function
SolarFlex is a system solution with pre-insulated flow and return
pipes for solar hot water heating systems used to connect the solar
collector with the storage tank in an easy, quick and professional
way. It optimizes thermal efficiency of the entire system. The pre-
insulation solution of two flexible stainless steel pipes inside two
EPDM closed cell insulation and the integrated sensor cable, saves
time and reduces cost of installation. SolarFlex is packaged in a 50-
foot continuous coil with a complete range of accessories to ensure
a smoothand secure installation.
General
• Easy to install, enabling pipes to be run without using a torch
in confined spaces or on the roof.
• Ensures a leak-free installation.
• Easy to separate, without damaging the tubes.
• External copolymer foil protects against UV radiation
and mechanical strain.
• Identification mark for flow and return.
• Meets highest requirements for modern solar heating systems.
• Pre-insulated feed and return pipes can be joined easily
without special tools.
Technical specifications
Materials:
- pipe: two corrugated stainless steel 316L
- insulation: two closed cell elastomer UV resistance EPDM
- outer cover: UV resistant polyolefin copolymer foil
Insulation thickness: 5/8 inch (16mm)
Thermal conductivity: 0.215 BTU-in/hr-ft
2
-°F (0.031 W/mK)
Thermal resistance: R-4.2
Max. working pressure: 150 psi (10 bar)
Max. fluid temperature: 350ºF (175ºC)
Min. surface temperature: -60ºF (-50ºC)
Length per coil: 50 feet (15m)
Fluid capacity per foot: 1/2" - 0.0219 gallons (0.08 liters)
3/4" - 0.0346 gallons (0.13 liters)
1" - 0.0509 gallons (0.19 liters)
Min. bending radius: 5 inch (130mm)
Pessure loss:
Approx. 25% more than in a comparable smooth pipe
Flammability: Class VO
Flame spread/smoke density 25/50
Agency approvals: ASTM D 635
ASTM C 177
C
AB C D
1" 1 - 1/4 " 4 -
7/16
"
2-
1/2
"
Code
1/ 2" 11/16 " 4 " 2 "
NA3520 - 15
NA3560 - 15
Weight (lb/f)
3/4" 15/16 " 4 -
3/8
"
2-
1/8
"
NA3540 -15
0.5
0.4
0.7
D
A
B
Product range
NA3520-15 1/2" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
NA3540-15 3/4" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
NA3540- B 3/4" SolarFlex pipe bulk cut to length up to 164 foot. Without connection fittings.
NA3560-15 1" SolarFlex pipe 50' coil including (2) double nipples, (4) union nuts, 4 segment rings and 4 washers
Dimensions