Part $5$:

$42.$ Good installation practice would be to install in a properly sized and plumbed Water neater.

$q,$

$43.$ The purpose of a T&P valve on a residential water heater is to protect the tank from excessive $q,$ and $$

$44.$ The material that is not approved for a T&P relief discharge pipe is $q,$

$45.$ Requiring modern gas water heaters to be installed on a stand when the installation is in a garage is determined by $q,$ code $.$

$q,$

$46.$ When installing a gas line to a residential water heater:

a$.$ A readily accessible manual shut off $$ in the $$ supply line serving the water heater.

b$.$ A sediment $$ ahead of the gas control valve to help prevent

$$ and foreign materials from entering the gas control valve.

c$.$ A ground joint union of proper size between the manual shut off valve and gas control valve to permit. $$ of the unit. Me sure to check all the gas piping for $$ before lighting the water heater. Use a $$ water solution, not a match or open flame. Rinse off soapy solution and wipe dry.

Part $6$:

$47.$ The $q,$ element heats up first in a cold tank of water on a typical residential water heater.

$48.$ If an end user complains of "Not enough hot water," check:

a$.$ Failec $$ valve

b$.$ Temperature $$

c$.$ Lower $$

$49.$ Volts should be read across the top two screws on the electronic thermostat with power on$.$

$50.$ Purge all $$ and ensure the tank is full of $$ prior to turning on power to an electric water heater for the first time.

$51.$ The proper procedure for checking resistance $($Ohms$)$ on an electric element is: Electrical power $$ remove the $$ from the element, multi$-$meter set to Ohms. Put one meter probe on each $$

$52.$ A $$ thermostat commonly causes an ECO $($reset$)$ button to trip

$53.$ The proper procedure for confirming a grounded water heater is: Power $q,$ wires removed from $$ meter set to continuity, test between each screw to