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