Applications - PENN Controls - LIT-1927115 - A28AK - Electromechanical Temperature Control - A28 Series Two-Stage Temperature Control

A28AK Series Two-Stage Flange Mounted Duct Temperature Control Catalog Page
Product
Controls > Electromechanical Temperature Controls > A28 Series Two-Stage Temperature Control
Document type
Catalog Page
Document number
LIT-1927115
Revision date
07/03/2024

Use the duct temperature controls on roof top units, make-up heaters, duct heaters, and air handling systems of all types.

Figure 1. A28 Series SPDT switch action

Note: On the low stage terminal, on a temperature increase above the low stage set point, the circuit from red to blue (RB) opens, and simultaneously red to yellow (RY) closes. A similar action occurs on the high stage terminal on a temperature increase above the high stage set point.