General Operation - Bradford White RE2H50S 1NCTT Series Installation/Operation Instruction Manual

Electrical Connections cont.-
What to Expect for "Normal Startup" in Hybrid Mode
After the unit has been installed, with all electrical and water connections secure and checked, then the unit
should be filled with water (vent tank by opening a hot water faucet somewhere in home to allow tank to fully fill
with water). Once the tank is full and power is energized, you may experience the following:
Elapsed Time Water Heater Actions
Unit will go through self-check and
0 to 2 minutes display countdown. Fan will turn on
after 1
Compressor turns on. Fan continues to
2 to 22 minutes
run.
Compressor turns off (fan will run for
22 minutes and 20 minutes after any compressor
beyond operation). Normal heating operation
resumes.
Note: The heat pump operating range is 35ºF to 120ºF (2ºC to 49ºC). If the ambient temperature is outside of
this range, the heat pump will turn off and the electric elements will be used until the ambient temperature
returns to within the operating range. During commissioning, a self-test countdown number will be displayed
indicating the time remaining before the unit begins normal operation.

General Operation

Before closing the switch to allow electric current to flow to the water heater, make certain that the water heater is full
of water and that the cold water inlet valve is open. Complete failure of the heating element(s) will result if they are
not totally immersed in water at all times. Failure of the element(s) due to dry-firing is NOT covered by warranty.
When the switch is closed, the operation of this electric water heater is automatic. The thermostats are preset to
the "HOT" setting to provide a water temperature of approximately 120ºF (49ºC) to reduce the risk of scald injury.
Scalding may occur within 5 seconds at a temperature setting of 140ºF (60ºC).
Care must be taken whenever using hot water to avoid scalding injury. Certain appliances require high
temperature hot water (such as dishwashers and automatic clothes washers).
To Fill the Water Heater:
1. Close the water heater drain valve. This water heater utilizes a ball valve; when closing the valve, the
stem will spin indefinitely. Confirm it is closed by ensuring the slot on the stem is perpendicular to the
valve body.
2. Open the cold water supply shut-off valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater is filled. Close the faucets and
check for water leaks at the water heater drain valve, combination temperature pressure relief valve,
and the hot and cold water connections.
To Drain the Water Heater:
Should it become necessary to completely drain the water heater, make sure you follow the steps below.
1. Turn OFF the power to the unit. The electric heating elements will become damaged if operated without
water.
2. Attach a hose to the drain valve located at the bottom of the unit and direct the hose to a drain.
3. Turn OFF the cold water supply.
4. Admit air to the tank by opening a hot water faucet or lifting the handle on the relief valve.
5. Open the drain valve with a flat screwdriver.
minute.
Comments
This 2-minute off-time prevents compressor damage. A
clicking noise may be heard during startup.
This 20-minute period is used to ensure the tank is full of
water (dry-fire prevention algorithm).
The water heater is operating in Hybrid mode. Quickly
provides initial amount of hot water with heating elements,
then switches to efficient heat pump for majority of heating.
CAUTION
20