In the recent times, the popularity of Gas tankless water heater has been increasing a lot among the homeowners. It is quite usual for any Gas home appliance to get repaired and need replacement. Most times, you may end up repairing the water heater and occasionally you will be required to replace the heating unit. With period maintenance, you can ensure effective operative of this natural gas tankless water heater. If you realize any drop in the temperature or if the equipment fails to perform its heating job, then you may be required to replace the heating element. You should be very cautious while handling the gas tankless water heater unit.
First of all, you must turn off the Gas switch at the breaker box or control panel. You can use the masking tape to paste it over the switch to prevent others from turning on the switch. You must use a volt meter to check the circuit to ensure there is no gas supply to the unit. Several safety measures have to be taken as even a small error could be dangerous and deadly.
Once you have disconnected the gas supply, you have to open the hot water faucet after blocking the water supply to the heater. By doing so, the excess water present in the heater will be siphoned out. Following this, you must remove the screws present at the bottom of heating chamber plate and drain out all the water in the heating unit into the bucket. Then you can start replacing the clean out heating plate.
After replacing the clean out place, the screws securing red and black wires located at the top of heating element should be removed. Once the heating element is loosened, you must wrap the heating element with a rag so that water does not drip on the control board. Then you have to disconnect O-ring and heating element from the heater.
Now, you want to make sure that O-ring seal is positioned properly on the heating element. Then you have to install the assembly and tight the heating element. Following this, black and red wires located at the top of the element should be replaced using two screws.
Once you have finished all these procedure and ensured that the drain plug screw is tightened properly, you can turn on the water supply.
If you have any water drips on control board, you must evaporate it using a hair drier so that you can protect the control board from getting harmed. Following this, you can fill the gas heater with water and make sure that the water does not leak. If it is not leaking, you can turn on the gas regulator switch and continue using the gas tankless water heater.