Single and Two-Stage Thermostats

Thermostat

Features

  • A SPDT Transformer Relay with a 20A, 115V supply, can operate the Vacuum Pump and a maximum of 9 Burners in a One-Zone (one Thermostat) System
  • A DPDT Transformer Relay with a 20A, 115V supply, can operate the Vacuum Pump and up to 9 Burners in a Two-Zone (two Thermostats) System

 

Example using Single Stage Thermostat Control

Single Stage, Two Zone Control

Single Stage Two Zone Diagram

  • Two Single-Stage thermostats are used
  • The Burners are divided in two zones
  • Each zone responds to its thermostat independently
  • Both zones may be ON or OFF at the same time

 

Example using Two Stage Thermostat Control

Two Stage, Single Zone Control

Two Stage Single Zone Diagram

  • One Two-Stage Thermostat is used
  • All Burners respond to one thermostat and are either HI, LOW or OFF at the same time