| 摘要 |
A humidifier assembly comprises a housing coupled to the exterior of a furnace plenum chamber and carries a spray nozzle which extends through the plenum wall and into the plenum chamber along with a thermostatic switch responsive to temperature in the plenum chamber. The switch is connected to a solenoid valve controlling delivery of water to the spray nozzle. In turn, the solenoid valve and the plenum thermostatic switch are series connected with a humidistat responding to the humidity in the space served by the furnace. This circuit is connected in parallel with the furnace blower motor which is controlled by another thermostatic switch positioned in the air passage leading to the plenum chamber. The blower control switch closes at a temperature above, and opens at a temperature below, the temperatures which close and open the thermostatic switch of the compact humidifier assembly.
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