Tankless Water Heaters | Search results for: 'tankless water heater model 91rs'

Caleffi Series 257 iSolar Plus Multi-functional Temperature Differential Controller

The iSolar™ 257 series are multi—functional temperature differential controllers that provide complete control of the solar thermal system for safe and long—lasting operation. The microprocessor based controller monitors and controls thermal solar systems by means of a collector sensor and a storage tank sensor. The controllers also perform important system monitoring and safety functions. The system parameters and measured values can be changed and viewed on the large LCD display. The controller is equipped for up to four temperature sensor inputs and one or two 120 VAC outputs (some models) for activating the solar circuit pump and second 120 VAC output for activating a valve or second pump. The controller is additionally equipped with VBus® for two-way communication between modules, PC’s or data loggers.

$285.34

Viessmann Vitosol 200-T Vacuum Tube Solar Collectors.

Viessmann Vitosol 200-T Solar Collectors

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

Caleffi Series 257 iSolar Multi-functional Temperature Differential Controller

The iSolar™ 257 series are multi—functional temperature differential controllers that provide complete control of the solar thermal system for safe and long—lasting operation. The microprocessor based controller monitors and controls thermal solar systems by means of a collector sensor and a storage tank sensor. The controllers also perform important system monitoring and safety functions. The system parameters and measured values can be changed and viewed on the large LCD display. The controller is equipped for up to four temperature sensor inputs and one or two 120 VAC outputs (some models) for activating the solar circuit pump and second 120 VAC output for activating a valve or second pump. The controller is additionally equipped with VBus® for two-way communication between modules, PC’s or data loggers.

$186.94

Viessmann Vitosol 200-F Flat Plate Solar Collector

Viessmann Vitosol 200-F Solar Collector

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 255 Dual Line Pump Station Return and Flow, 3 Speed

Solar pump stations are pre-assembled and leak-tested. Safety relief valve. Ball valves with built-in fl ow checks in return (and fl ow for dual-line models). Temperature gauges in return (and fl ow for dual-line models). Pressure gauge. Manual air vent (dual-line models only). Expansion tank connection. Connections for fl ushing and fi lling. 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.

$506.44

Heat-Flo Heating Products

A Complete Line of Stainless Steel

Indirect Water Heaters
Solar Storage Tanks
Storage Tanks
Buffer Tanks

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.

Viessmann Vitosol 100-F Flat Plate Solar Collector

Viessmann Vitosol 100-F Solar Collector

The Vitosol 100-F is an economy series flat plate collector that offers high performance and quality construction at an affordable price. Ideal for any solar thermal application especially domestic hot water (DHW) or pool heating. Absorber surface area: 25 sq.ft / 2.3 sq.m

Model		SV1	SH1
Installation		Vertical	Horizontal
Absorber Surface Area	sq. ft sq. m	25.0 2.32	25.0 2.32
Optical Efficiency	%	74.3	74.3
Collector Dimensions
Width	inches mm	41¾ 1056	93¾ 2380
Height	inches mm	93¾ 2380	41¾ 1056
Depth	inches mm	2¾ 72	2¾ 72
Weight	lbs kg	95 43	95 43

Caleffi Series 257 iSolar BX Multi-functional Temperature Differential Controller

The iSolar™ BX is a multi-functional temperature differential controller with add-on system functions for use in a wide variety of solar thermal heating applications. iSolar™ BX is equipped with four relay outputs; three triac pump speed control relays and one standard relay. These outputs include two pulse width modulation (PWM) outputs that enable energy conservation measures for high-effi ciency direct current (DC) pumps. The controller is equipped with fi ve Pt1000 sensor inputs, two analog Grundfos sensor inputs, and one impulse fl ow meter input. Twenty six system confi guration options are predefi ned for control of a standard solar water heating system, drainback systems, supplemental space heating, multiple storage tanks, heat dump and storage tank booster heating.

$314.86

Viessmann Vitosol 300-T Vacuum Tube Solar Collectors.

Viessmann Vitosol 300-T Solar Collectors.

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

Steca TR 0502 Solar Thermal Controller

The new Steca TR 0502 solar thermal controller closes the gap between the already successful Steca TR 0301, TR 0301sc and TR 0603 temperature difference controllers.

With its animated graphic display and elegant design, it continues the success enjoyed by this family of controllers. This controller provides everything to operate your solar thermal system safely over a long service life. The Steca TR 0502 controller monitors and controls solar thermal systems with up to two differently oriented collector arrays and a maximum of two domestic hot water or buffer storage tanks. The large graphic display shows the animated control circuits, which allows you to view the operating statuses of each system. The clearly arranged display ensures easy operation using pictograms. Pre-programmed systems enable universal usage. The Steca TR 0502 controller has five inputs for recording temperatures or pulse values, as well as two outputs (one is speed-controlled) for controlling pumps or switching valves.

$441.07

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