4
Installation Continued
5. Remove the green circuit board terminal strip from the Control Unit by pulling straight out on the terminal strip.
Figure 16
6. Install wiring (The wire is installer supplied. Thermostat wire is acceptable.) between the green circuit board connector and the
Power Supply, observing polarity, as shown on both the Power Supply and the control panel. [+ to + and – to –]
Figure 17
Maximum run of thermostat wire; 18 gauge – 75 feet; 20 gauge – 50 feet; 22 gauge – 35 feet.
Note:
If remote alarm detection is desired, connection to the alarm circuit can be made using the normally open contacts provided on
the terminal strip. These contacts are rated for 150mA. Do not exceed this amp range or damage to the Control Unit can occur.
Exceeding the current rating will void the warranty.
Figure 18
IMPORTANT! –
Do not insert the Power Supply into the 120 VAC outlet until the installation is complete.
7. Insert the green circuit board connector into the Control Unit.
Figure 19
8. Check the position of the valve reset located on the front of the Control Unit. The slots should indicate the valve is in the open
position. The 11 o’clock position is the open position.
Figure 20
open position;
Figure 21
closed position.
9. Turn on the water supply and check for leaks.
10. Insert the Power Supply into a suitable 120 VAC outlet. The status lamp on the Control Unit will be green.
IMPORTANT! –
The outlet must be powered at all times; it must not be controlled by a switch.
11. Turn on the electricity to the water heater. The water heater should operate normally.
Figure 19
Figure 20
Figure 21
Figure 16
Figure 17
Figure 18
