COPPER BRUTE II (500 - 2000) | Page 41 |
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Caution
If the tank temperature control is set too high, a potential for hot water scalding may exist.
Mode 2: Primary secondary piping. 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.
Mode 4: Hydronic outdoor reset system without primary / secondary piping.
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.
Mode 5: Primary secondary piping with outdoor reset.
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.
Mode 6: Boiler with external staging control (multiple boiler control, building automation system, energy management system, etc.)
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 may be unsafe. The wiring in Section 5.3 of this manual must be used.
The AUTO/MAN switch is located on the circuit board in the
Program the temperature control to use Mode
6.Mode 6 tells the Copper Brute II control that an external staging control is being used.