Bradford-White Corp B4 用户手册

Internet Version for Reference Only

Page 20

Copper Brute B4 Volume Water Heaters

Page 21

7.      Turn manual gas valve on.

8.      Reset all safety devices (some units have manual 

resets on hi-limit switch, low water cutoff, etc.).

9.      Set temperature control to desired setting.

10.    Replace control access panel.

11.    Turn electric power to the heater on.

12.    If the heater will not operate:

         a. Turn gas to heater off following the 

instructions found on the inside of the heater 

and call a qualified service technician or gas 

supplier.

         b. Turn main electrical switch off.

         c. Close all manual gas valves.

The hi-limit switch is factory set, and should not 

be adjusted above the factory setting.

Adjusting the temperature control past the 

recommended setting can result in a scalding 

injury.  Hot water can produce third degree burns 

in 6 seconds at 140°F (60°C) and in 30 seconds at 

130°F (54°C).

 

Vent pipes, drafthoods, and heater tops get 

hot! These surfaces can cause serious burns. 

Do not touch these surfaces while the heater 

is in operation. Adding a vent cap reduces the 

temperature on the top.
For your safety, when starting the heater, keep your 

head and face well away from the lower firebox 

opening to prevent any risk of personal injury.
LP GAS: To avoid possible injury, fire and 

explosion, read and follow these precautions and 

all instructions on this heater before lighting. This 

heater uses LP gas which is heavier than air and 

will remain at ground level if there is a leak. Before 

lighting, sniff at ground level. 

If you smell gas, follow these rules:
1.   DO NOT light matches. DO NOT turn electric 

lights or switches on or off in area. DO NOT use 

an electric fan to remove the gas from area.

2.   Shut off gas at LP tank.
3.   Telephone gas company and fire department 

for instructions. Give your name, address and 

phone number.      

If your LP tank runs out of fuel, turn off gas at the 

heater. After the tank is refilled, the heater must be 

relit in accordance with the instructions found on the 

inside of the heater. DO NOT attempt repairs on the 

gas control or heater. Tampering is dangerous and 

voids all warranties.
 

Lighting instructions can be found on the inside 

of the heater. To start up the heater:
1.      Make sure the system pump is running and there 

is water flow.

2.      Remove the control access panel.
3.      Set the temperature control (see Figure 30) to its 

lowest setting.

4.      Turn electric power to the appliance to off.
5.      Turn manual gas valve off.
6.      Wait 5 minutes to clear out any gas, then smell 

for gas, including near the floor. Be sure to smell 

next to the floor because some types of gas are 

heavier than air and will settle on the floor.

 

This heater is equipped with an ignition device 

which automatically lights the burner. Do not try to 

light the burner by hand.

Manual Reset Temp. Control

Temperature Controller

The water heater can be used with a field-

supplied tank aquastat, sequencing control, or other 

temperature control device, which will call the unit for 

heat when the temperature goes below the controller’s 

setpoint.  For the most efficient setting, set the tank 

temperature at the lowest possible setting for adequate 

hot water in the application.