2021
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Gas Water Heater Timer



     Current gas water heater timer on market
Control gas water heater with wifi
The Aquanta wifi-controlled gas water heater timer interfaces with the COM port on WV series Honeywell gas valve for atmospheric heaters.
It does not interface with power vent Honeywell, but works with power vented heater by connecting to incoming voltage.
This means the Aquanta works with both types of Honewell gas valves

Aquanta does not work with mechanical gas valves.

Buy:
Aquanta for gas water heaters
Aquanta for electric water heaters

Resource
Aquanta-gas-electric timer-Installation
The Aquanta has a TP connection
All water heaters are required to have a TP valve. NO exceptions. The TP valve will respond to temperature and pressure emergencies that occur for variety of reasons.
The TP valve is "installed so that the temperature sensing element (probe) is immersed in the hottest water ... the hottest water is located in top six inches of the tank." Resource pg 6
The Aquanta requires temporary removal of TP valve so the Aquanta sensing probe can be installed ... and afterwards the TP valve is reinstalled. TP must be re-installed and can NEVER be capped off.
The Aquanta installation does NOT violate code as long as TP valve probe is inside the tank. The TP valve probe will not work if the end of it is not inside the tank.
Aquanta TP installation will void water heater warranty if manufacturer is aware. Do not report that you are using Aquanta.
ICON gas valve Aquanta works with WV series Honeywell gas valve for atmospheric heaters
Aquanta wifi receiver has a cable that connects to COM port or communication port on WV series gas valve. I aasume it also works with the Honeywell WT series.

Aquanta Wifi or any secondary connection to gas valve etc will void water heater warranty if manufacturer is aware. Do not report that you are using Aquanta.
Unknown if Aquanta is approved by Honeywell for connection to the gas valve?
It is possible the connection to COM port was accomplished separate from Honeywell.
The Aquanta has been on market since 2014 as near as I can tell.

A timer called the setback controller was available from Bradford White around 2007 ?
The setback controller used a 24 volt interface with COM port on the WV series gas valve. It did not offer Wifi. It was a programmable timer with two on-off per day.
My assumption about the setback controller was it was done in cooperation with Honeywell. The setback controller was discontinued for residential heaters with the WV gas valve, but seems to be available on some Bradford White commercial gas water heaters as a building management control.

The setback controller from Bradford White in 2007 implies there is no harm caused by connecting to COM port using Aquanta in 2021.

Aquanta works with Honeywell gas valve for power vented heaters
Aquanta works with Intellivent gas valve for power direct vented heaters

See larger image
Aquanta does NOT work with mechanical gas valves
Yes .... Aquanta works with electric heaters

Buy:
Aquanta for electric water heaters

Resource
Aquanta-gas-electric timer-Installation
Compare all water heater timers

General information for setting timer program:

Typical residential gas water heater heats 40 gallons of water in an hour. (Electric heater 20 gallons)

Shower uses 5-9 gallons hot water
Bath uses 12-15 gallons hot water.


*Try a timer free:
For 2 months, manually rotate gas valve to Vacation when water heater is not needed. Be stingy.
After two months, check difference on gas bill.
See other ways to save with water heater:
9 Ways to save with water heater
Gas water heater timer research pdf
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