From B the water falls to the ...

From B the water falls to the ...

From B the water falls to the pipe (D-D), which is level with the ground, causing equal amounts of water to flow to both points.

Water then flows from D down both sides of the house and back to F under the same drop as it did from A to B. From F there is another drop back to the heater and the process is repeated.

A water outlet (8), outside the shut-off valve, is provided for watering the house.

The 'closed' system is similar to the 'open' system outlined above, but has a reduction valve from the city system and should have a 'bleeder' so that the maximum water pressure in the pipe does not exceed 28 pounds pressure per square inch.

The disadvantage of this layout is that heat may be lost by backing up into the city system.

The side-arm heater system with two-inch pipe is only suited for a small house in a mild climate.

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Stay tuned for more orchid-growing advice tomorrow! :)




Woo hoo!