Solar Thermal

The Steca TA OP1 overvoltage protection unit is a connection socket in a splash-proof IP65 protective case and serves to protect the collector sensor against local lightning strikes and externally induced voltage spikes.

 A varistor protective diode protects against atmospheric overvoltages that can lead to the destruction of the collector sensor. The use of the Steca TA OP1 is generally recommended for extra protection of the collector sensor in any type of solar thermal system. In addition, the simple operation of the spring terminals allows rapid and simple installation of the collector sensors using a sensor extension cable.

Single or dual heat exchangers The Stiebel Eltron SB/SBB series water heaters are indirectly fired and are equipped with either one or two large heat exchangers. The heat exchangers are heavy gauge steel with procelain enamel coating.

Flexible options The models with a single heat exchanger can be used for solar applications with some form of external backup heater. On the models with dual heat exchangers, the upper coil is typically connected to a space heating boiler fired by any fuel and the lower coil is connected to the solar panels.

Multiple uses. All Stiebel Eltron SB/SBB series water heaters can also be used as high capacity indirectly fired water heaters in conjunction with any type of heating boiler.

Heat-Flo, Inc. is a full service design and manufacturing firm dedicated to providing high quality, cost effective solutions for hydronic, solar, and electric based hot water heating system applications, and hydronic and radiant heating applications. Heat-Flo originates all product design, manufacturing, sales, and ongoing market support at our facility in Uxbridge, Massachusetts, USA.  Please inquire for more Product Detail.

The most environmentally-friendly method of domestic hot water heating, as well as a backup/supplement for low-temperature heating purposes. Thanks to the highly effective Sol-Titan coating, the vacuum tube collector Vitosol 300-T can even utilize diffused solar radiation. It is therefore suitable not only for domestic hot water applications, but also as a backup for central heating purposes. Absorber surface area: 22 and 32 sq.ft / 2 and 3 sq.m

Model		SP3 2m	SP3 3m
Absorber Surface Area	sq. ft sq. m	22 2.05	33 3.07
Optical Efficiency	%	82.5	82.5
Collector Dimensions
Width	inches mm	55¾ 1419	83¾ 2126
Height	inches mm	78½ 1996	78½ 1996
Depth	inches mm	4¾ 122	4¾ 122
Weight	lbs kg	99 45	150 68

The Vitosol 200-T is a high-performance vacuum tube solar collector that is ideal for DHW/combination space heating systems with versatile horizontal or vertical installation on roofs, walls or freestanding. The Vitosol 200-T is ideal for incorpation into any architectural design. Absorber surface area: 22 and 33 sq.ft / 2 and 3 sq.m

Model			SD2A 2m²	SD2A 3m²
No. of tubes			20	30
Gross area		sq. ft sq. m	30.98 2.88	46.5 4.32
Absorber surface area		sq. ft sq. m	21.6 2.01	32.5 3.02
Total dimensions
Width		inches mm	55¾ 1418	83¾ 2127
Height		inches mm	80½ 2043	80½ 2043
Depth		inches mm	5½ 143	5½ 143
Weight		lbs kg	134.5 61	208 94.6

The Vitosol 200-F flat plate solar collector is attractive not only for its low investment cost but also for the energy it saves. With the new high efficiency Sol-Titan coating solar energy harvest is now even more efficient. Durable, corrosion resistant construction using materials such as powder coated aluminum, copper and stainless steel, as well as 3.2 mm special low-iron solar glass ensure a long service life and maintain high efficiency for years to come. Absorber surface area: 25 sq.ft / 2.3 sq.m

Model		SV2A	SH2A
Absorber Surface Area	sq. ft sq. m	25.0 2.32	25.0 2.32
Optical Efficiency	%	79.3	79.3
Collector Dimensions
Width	inches mm	41¾ 1056	93¾ 2380
Height	inches mm	93¾ 2380	41¾ 1056
Depth	inches mm	3½ 90	3½ 90
Weight	lbs kg	90.2 40.9	90.2 40.9

Caleffi Series NA266 Single Line 1/2" SolarFlex Direct Fitting Set for Pump Station

Caleffi iSolar NA257209 Sensor Well

Drainback solar pump stations designed with a high head and steep pump curve which are pre-assembled and leak-tested. Safety relief valve, ball valve, temperature gauge, pressure gauge, air fi ll valve. Connections for fl ushing and fi lling with foam insulation. Balance/fl ow meter: ½—5 gpm scale. Pump: Grundfos UP15-100 Performance: 36 feet head / 8 gpm. Safety relief valve: 90 psi. Max. working pressure: 150 psi. Max. working temp: 360ºF. Connections: ¾" female thread. Agency approval: cULus.