5. Ener-G-NET™Wiring
Ener-G-NET incorporates all of the temperature sensing and control necessary for HYDROMAX™ operation. Built-in switching relays may be wired to operate the boiler control and circulator pump or zone valve. The diagram below illustrates these internal switching functions.
Examples of common wiring scenarios are provided on the following page.
Front Panel
Control
![](/images/new-backgrounds/1040676/406769xi2.webp)
![](/images/new-backgrounds/1040676/406769xi3.webp)
![](/images/new-backgrounds/1040676/406769xi4.webp)
Screws (4)
Wiring Cover
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Conduit Holes (3)
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Ground Screw
Normally Open | { | | | | |
Close on call for hot water | | | | |
Post-Purge function | | | | |
Normally Open | | | { | | |
| | | |
Close on call for hot water | | | |
Normally Closed | | | { |
Open on call for hot water |
Priority function | | |
Constant 24VAC or 120VAC{
ORANGE
ORANGE
BLUE
BLUE
VIOLET
VIOLET
WHITE
Power In
BLACK
After wiring is complete, insert the white temperature sensor (thermistor) plug into the receptacle at the base of the digital control. Select the plug marked CIRCULATOR or ZONE VALVE based on the application. Zone valves can be slow actuating. Therefore, the zone valve sensor contains a built-in temperature offset to account for the time it takes the zone valve to fully close. This results in potable water temperature that is representative of the digital control temperature set point. This is why it is important to install the correct sensor into the digital control. See Page 2 for information regarding the selection of a circulator or zone valve.
Temperature | | Water | Water |
Sensor Plug | | Sensor Plug | Sensor |
|
NOTE: This sensor should not be the primary means of water detection. US PATENT NO: 7,671,754 and other patents pending.
NOTE: Line-voltage and safety-circuit wiring which is external to the water heater jacket when all panels are in place, and which is part of the appliance, shall be protected by metal conduit, metal-clad cable or raceways. “Power Limited Circuit Cable” needed not be provided with the protection specified above if it is securely fastened to the appliance jacket and follows the contour of the appliance jacket. Thermoelectric wiring shall be exempt from this provision.
NOTE: Strain relief shall be provided for all conductors leaving an enclosure. For low-voltage wiring, strain relief at the point of exit from an enclosure is not necessary if, by wire location or support, protection is provided against accidental strain.
NOTE: For models equipped with a water sensor, the water sensor should be placed flat on the floor in a low-traffic area. On a regular basis, verify that the water sensor is functioning properly by placing the orange puck in a water puddle or insert a coin between the two electrodes and listen for audible alarm.