Bradford-White Corp BWCV User Manual

Internet Version for Reference Only

Page 24

Copper Brute II

Page 25

Step 3: Press the three programming buttons to 

enter “ADJUST” mode (Figure 10). Press “Item” to 

select the programming item, and the arrow keys to 

adjust the setting. See section 6.2 Programming the 

Temperature Control if more programming instructions 

are needed.

Item                                      F°                         C°
MODE                                   2                          

BOIL TARGET                    180                       

BOIL MASS                           1                          

DIFF                                     20                        

DLY                                    5:00                      

F°                                         F°                        

Step 4: See section 6.3.11 Limit Controls. Set 

both high limit controls at least 25°F / 14°C higher 

than the BOIL TARGET to allow for temperature rise 

across the heat exchanger.

This section describes various applications and 

the recommended field wiring and Mode selections.

This setup is most commonly found in domestic 

hot water applications with a continuous run pump. 

This is not recommended for other applications.

The heater is shipped with a jumper between the 

“Com D” and “Ht D” terminals, which must remain 

in place to allow the unit to fire. The unit will fire 

whenever the outlet temperature cools below the target 

temperature.

Important Note: If the heater is pump-mounted 

at the factory, or if a field-supplied pump contractor 

is connected to the heater’s pump contactors (Pmp 

Pmp), the user must program the controller’s pump 

delay (DLY) setting to ON. When ON is selected, 

pump operation is continuous. The unit’s inlet and 

outlet sensors must be able to detect the temperature 

in the storage tank in order to control it. Without the 

tank water continuously running through the heater, 

the heater will have no way of knowing what the 

temperature in the tank is, and will not be able to 

respond to a change in tank temperature. Short cycling 

or lack of hot water may result if the pump does not 

run continuously.

Remove the jumper from the “Com D” and 

“HtD” terminals and connect the aquastat’s leads to 

these terminals. This connection uses a standard, non-

powered mechanical aquastat. When the aquastat calls 

for heat, the heater’s temperature control will respond 

and start the heater pump (if equipped) and fire the 

heater.

If the heater is not a pump mounted model, a 

24VAC pump contactor may be connected to the 

“PMP” terminals to control a field installed pump. 

(If desired, the pump can run continuously, with the 

aquastat telling the heater when to fire.)

Program the temperature control to use “Mode 

1.” The AUTO/MAN switch must be in the AUTO 

position in this mode.
Mode 3:    Bradford White R2014800 sensor 

The heater ships with a jumper between the 

“Com D” and “Ht D” terminals. Verify this jumper is 

in place, and connect the sensor leads to the “S C2” 

and “SUP S” terminals. When the sensor detects a 

temperature below the target temperature, the control 

will respond and start the heater pump (if equipped) 

and fire the heater. 

If the heater is not a pump mounted model, a 

24VAC pump contactor may be connected to the 

“PMP” terminals to control a field installed pump. (If 

desired, the pump can run continuously).

Program the temperature control to use “Mode 

3.” The AUTO/MAN switch must be in the AUTO 

position in this mode.

If the tank temperature control is set too high, a 

potential for hot water scalding may exist.

Install a “supply sensor” in the primary loop 

using the Bradford White part number R2014800 

sensor (included with every unit). Connect the sensor 

to the “S C2” and “SUP S” terminals. 

You must provide an indication of the system’s 

heat demand by removing the jumper across the 

“ComD” and “HtD” terminals on the field wiring 

panel and connecting a zone valve or zone pump end 

switch, thermostat, aquastat or other contact closure to 

these terminals. If the “ComD” and “HtD” terminals 

are left jumpered, the control will always see a heat 

demand and remain in “Dem” mode, with the boiler 

pump running continuously. See Section 5.2 for more 

information.

A secondary aquastat, such as for a separate heat 

exchanger for DHW, can be connected to the “Set D” 

and “Com D” terminals. A call for heat from these 

controls will start the boiler pump and cause the heater 

to fire.