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Prevent water heater freezing

2016
water hreater freezing

Prevent water heater freezing

Add a freeze control circuit to water heater wires.
This would activate when temperature drops below 40F.
When you leave for vacation, turn off 30 amp switch, and then freeze control overides switch when air temperature drops below 40F

Buy:
Freeze thermostat
30 amp switches
30 amp contactors

Resources:
More about Contactors
Override T104 timer with freeze control
Add another thermostat to water heater

Add freeze control to T104 timer

Yiou can wire a separate freeze control
Or buy integral freeze control and contactor

Buy:
Freeze thermostat
30 amp contactors


Resources:
T100 timers
Freeze controls
How to wire T104 timer


Freeze control and contactor inside box
Resource:
Freeze contals and manuals
PID

Re-wire water heater for PID

Insert probe near lower thermostat.
Position against tank wall and cover w insulation

Wire thermostat and element as shown
240 volt line for water heater MUST be routed through ECO located on upper thermostat.
Why? Because ECO is safety device that will cut power to element in event of overheating.

PID is powrered by 120 volt for example.
Hot and neutral are needed for PID.
Set temperature controller program.
When temperature probe senses cold water, then PID activates contactor
Contactor switches 30 amp water heater circuit, and lower element tuns on.
Lower element keeps tank hot.
This wiring design, both hot wires to element are cut off by contactor.
Do NOT connect 240 volt 30 amp water heater circuit to PID... must use contactor

Buy:
PID Temperature controllers
Digital temperature controller
30 amp contactors

Solid State Relay Board for Arduino

Resources:
Contactors
Select breaker and wire size
Gas and electric water heaters Support the economy:
Buy water heaters  from my associate links:

50 gallon Gas water heaters at Amazon
40 gallon gas water heaters at Amazon
50 gallon Electric water heaters at Amazon
40 gallon electric water heaters at Amazon
Hybrid / heat pump/ water heaters at Amazon

Resources:
How to install gas water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
box timers Compare box timers

Compare ways to control Gas and Electric heaters
Intermatic control centers Control centers:
+ manuals and parts


All control centers and parts

Including Z-wave
programmable timer Compare programmable timers

Control water heater with programmable wall timer
Countdown timers Compare countdown timers

Control water heater with countdown timer
Low voltage power packs Low voltage transformers

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