17 shows a wiring diagram of a typical controller for an air system. ... water; T, , temperaturea storage; FTS, Ian timer switch; HAF, heat-assisted Ian switch; a . low-voltage wiring, a , line voltage. If a heat pump is used as the auxiliary heat.
|Title||:||Solar energy handbook|
|Author||:||Jan F. Kreider, Frank Kreith|
|Publisher||:||McGraw-Hill Companies - 1981|