Callout | Description |
---|---|
A | High temperature stage |
B | Low temperature stage |
C | Jumper |
A28GA Series two-stage open type temperature controls are designed for you to install in units that already include a case or enclosure. The controls cover a broad range of general purpose operating temperature control applications in the refrigeration, air conditioning, and heating fields. Two single-pole, double-throw (SPDT) switches facilitate two independent control circuits. You can wire each switch for open high or close high action, to create automatic changeover for heating and cooling applications or similar requirements.
Models are available with a close differential on each switch. The controls include a jumper across the common terminals as standard. Models are available with fixed or adjustable between-stage differentials.