Controls, Indicators, And Connections - heat-timer EPU-D Installation And Operation Manual

Controls, Indicators, and Connections
Figure 1: EPU‐D Controls, Indicators, and Connections
7
Item
1 Status LEDs
See "EPU‐D Control Module Status LEDs" on
page 23.
2 Digital Display
See "Display and Variable‐Function Buttons" on
page 23.
3 Variable‐Function Buttons
See "Display and Variable‐Function Buttons" on
page 23.
4 Input Connections
• Terminals 9 & 10 – Heating System Sensor
• Terminals 11 & 12 – Outdoor Temperature
Sensor
• Terminals 13, 14, 15, & 16 – not used
• Terminals 17 & 18 – Remote Shutdown
Heat‐Timer Corp.
1
6
Description
Controls, Indicators, and Connections 3
5 4
Item
5 Prgm/Run Switch
Places the EPU‐D in programming mode or run
(normal operation) mode.
NOTE: Programming mode may be password
protected.
6 Output Connections
• Terminals 4 & 5 – not used
• Terminals 6, 7, & 8 – Output to Boiler
Burner or a Motorized Valve
7 120Vac Power Input Connection
• Terminal 1 – Input Line Voltage
• Terminal 2 – Neutral
• Terminal 3 – Ground
2
Description
059840‐00 Rev. A
3