Tags: Control Circuits

Gas Control Circuits

{0 Comments}

Gas Control Circuits

The gas control circuits used to operate modern gas-fired heating equipment can be divided into the following three basic types: 1. Low-voltage control circuits. 2. Line voltage control circuits. 3. Millivolt control circuit. A low-voltage temperature control circuit (see Figure 5-1) uses a step-down transformer to reduce the higher line voltage to approximately 24 to …

Read More…

Heating Temperature Control Circuits

{0 Comments}

Heating Temperature Control Circuits

The thermostat is the basic controller in the electrical control circuits used to operate a heating and/or cooling system. In systems using gas-fired heating equipment, there are three basic control circuits: • Safety shutoff circuit • Fan or circulator control circuit • Temperature control circuit There are three basic types of temperature control circuits used …

Read More…