Bradford-White Corp Water Heater BWCH Manual De Usuario

Page 41

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 Copper Brute II 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 boiler 

to fire.

If the boiler is not a pump mounted model, a 

24VAC pump contactor may be connected to the 

“PMP” terminals to control a field installed pump.

Program the temperature control to use Mode 2. 

The 

AUTO/MAN

 switch must be in the 

AUTO

 position in 

this mode.

Bradford White strongly suggests the use of 

primary secondary piping with the Copper Brute II 

boiler. This piping style best ensures that the Copper 

Brute II will have proper water flow. However, non-
primary secondary methods can be used successfully, 

so this section has been included.

Install the outdoor reset sensor, Bradford White 

part number R2014000, and connect the leads to the 

“OD S” and “S C2” 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.

Reset Override: An additional thermostat or aquastat 

may be connected to the “Set D” and “Com D” 

terminals. A call for heat from either of these controls 

will start the boiler’s pump and cause the boiler to fire. 

If the boiler is not a pump mounted model, a 

24VAC pump contactor may be connected to the 

“PMP” terminals to control a field installed pump.

Program the temperature control to use Mode 4. 

The 

AUTO/MAN

 switch must be in the 

AUTO

 position in 

this mode.

Install the outdoor reset sensor, 

Bradford White 

part number R2014000,

 and connect the leads to 

the “OD S” and “S C2” terminals. Install a “supply 

sensor” in the primary loop using the 

Bradford White 

part number R2014800 sensor

 (included with every 

Copper Brute II 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 boiler 

to fire.

If the boiler is not a pump mounted model, a 

24VAC pump contactor may be connected to the 

“PMP” terminals to control a field installed pump.

Program the temperature control to use Mode 5. 

The 

AUTO/MAN

 switch must be in the 

AUTO

 position in 

this mode.

Leave the jumper installed between “Ht D” and 

“Com D” terminals.  There are terminals on the field 
wiring panel that must be wired per the instructions in 

Section 5.3

 of this manual.  Other wiring methods 

The 

AUTO/MAN

 switch is located on the circuit 

board in the slide-out control panel on the front of the 

Copper Brute II.  This switch is placed in the manual 
position 

(MAN)

 when an external control is controlling 

the Copper Brute II stages.

Program the temperature control to use Mode 

6.  Mode 6 tells the Copper Brute II control that an 

external staging control is being used.