XTS3
Series
Operational Indicator Lights (if applicable)
The externally located operational indicator lights (models with 24VAO or IND-LT option) are provided to
assist in troubleshooting the heater. Refer to the following pages for additional troubleshooting
information.
Figure 3.1
•
Operational Indicator Lights (24VAO or IND-LT option only).
HOT
120V
NEUTRAL
EARTH
- 120V HEATER INPUT -
HIGH
24V
LOW
NEUTRAL
- 24V HEATER INPUT -
Light 1
Indicates Valve
Opens
Operational Indicator Lights
(24VAO internal relay option or
IND-LT indicator light option only)
Light 2
Indicates Pressure
Switch Closes
13
3.0
Operation