Special Instructions

Hot Water Out

Cold Water In

 

Aquastat, close on rise.

Temp. / Pressure

Optional

 

 

Automatic

Relief Valve

8

Air Valve

 

 

1

 

2

 

 

 

7

 

Pressure Relief Valve - Must be within 2 ft. of coil

3

3

 

Drain

Optional Gate

 

Valve

 

Valve to Control

4

5

 

Rate of Flow

 

6

 

 

Circulator Pump

 

Distance between of more than 10 feet

Circulating Pump Method - Distance = 10 Feet or More

This method is used when the water heater tank is more than ten feet away from the furnace or the furnace is on a higher level than the water heater tank. In addition to a circulator pump, you may want to add a aquastat to thermostatically control the pump according to water temperature. This is optional and not necessary if the circulator pump is left run continuously. Another option is a gate valve placed near the pump to control the rate of water flow.

A. Shut off the water heater and the water supply to it. Drain the tank completely.

B. Remove the Temp. / Presure relief valve and discard. Install a short 3/4 in. nipple and tee (1) along with a new relief valve.

C. Remove the drain valve, at the bottom of the tank. Install a short 3/4 in. nipple and tee and re-install the drain valve to the tee (4).

D. Install a circulating pump as shown (6). Run 3/4” copper tubing from the circulating pump to the lower leg of the water coil. This is where the optional gate valve (5) can be installed to regulate flow.

E. Install a 3/4 in. tee and a 150 lb. Pressure relief valve (7) in the top leg within two feet of the coil.

F. Complete the 3/4 in. line by running it back to the tee at the top of the water heater tank. Be sure to install the 3/4 in. vent elbow and automatic air vent (2) at the high point of the line. The optional aquastat can be installed in this line, a maximum of 6 feet from the furnace. This aquastat must close on rise in temperature and must be hooked up to turn on the circulator when the water temperature reaches 120° f.

G. After securing all connections, refill the tank with water and then, ONLY THEN, turn on the power to the water heater.

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Harman Stove Company SF1500A manual Circulating Pump Method Distance = 10 Feet or More
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SF1500A specifications

The Harman Stove Company has established itself as a leader in the heating industry, known for its innovative and efficient wood and pellet stoves. The SF series, including models SF2600A, SF1500A, SF3500A, and SF2500A, showcases the company's commitment to high-quality craftsmanship and cutting-edge technology.

The SF2600A stands out with its robust heat output, designed for larger spaces. With a capacity to heat up to 3,000 square feet, it features a large firebox capable of accommodating extended burns, which means less frequent refueling. The CleanStart technology ensures that the stove ignites quickly and efficiently, minimizing smoke emissions and energy waste. Users will appreciate the integrated air wash system, which keeps the glass clean, providing an unobstructed view of the flames.

Meanwhile, the SF1500A serves as an excellent choice for smaller homes or cozy spaces, heating areas up to 1,800 square feet. Its compact design does not compromise on performance. The model also incorporates Harman's advanced combustion technology, which optimizes airflow for a cleaner burn. This efficiency not only helps in reducing heating costs but also contributes to a more environmentally-friendly operation.

The SF3500A is engineered for those who demand maximum warmth and efficiency. With a substantial heat output, it can easily heat areas exceeding 3,500 square feet. This model integrates a state-of-the-art digital control board that allows users to manage their heating needs effortlessly, providing options for programmable settings and real-time monitoring. It also boasts a high-efficiency rating, ensuring users get the most from their fuel, with longer burn times and minimal ash production.

Lastly, the SF2500A offers a balanced approach, capable of heating spaces up to 2,500 square feet. It features adjustable air controls, enabling users to customize their heating experience based on personal preference. The built-in diagnostics system helps troubleshoot potential issues, providing peace of mind for homeowners. With elegant styling and various finishing options, the SF2500A can seamlessly integrate into any home décor while delivering dependable warmth.

Each model in the Harman SF series exemplifies durability, performance, and user-friendly operation, making them ideal for anyone seeking a reliable heating solution in today's energy-conscious landscape.
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