F. low voltage connections for standard heater, G. tank sensor or mechanical control – HTP EL-399NVWH User Manual
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LP- 346 REV. 3.20.14
normal operation. The connections depicted in Figure 26 show two 120 volt lights connected to the alarm terminals. One light will be on
when the heater is in normal mode and the other light will be on when the heater is in lockout mode.
F. LOW VOLTAGE CONNECTIONS FOR STANDARD HEATER
1. All low voltage cables should enter the electrical junction box through the provided knock out holes as shown at left.
2. Connect all low voltage field devices to the low voltage terminal strip located in the electrical junction box.
Failure to use the correct sensor may result in tank temperature being either above or below set point, and could result in decreased
performance, substantial property damage, or heightened risk of injuries due to scalds.
G. TANK SENSOR OR MECHANICAL CONTROL
Connect the tank sensor or mechanical controls to the TANK SENSOR terminals (10, 11) of the low voltage terminal strip as shown in
Fig. 26. The control will automatically determine which type of sensor is connected and operate accordingly.
Caution should be used to ensure neither of these terminals becomes connected to ground.