Page 38 | BRADFORD WHITE CORP. |
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contact the factory.
There are three black programming buttons on the Temperature Control (see Figure 25). Press and hold all three programming buttons until the word ADJUST appears in the upper right corner of the LCD display (it replaces the word VIEW).
Pressing ITEM cycles you through the items you need to program. UP ARROW increases the value of that item, while DOWN ARROW decreases it. ADJUST mode exits if you don’t press a button for 20 seconds. To return to ADJUST mode, simply press and hold the three buttons again.
The first item is MODE; enter the mode number as determined above. The Temperature Control will then present you with some or all of the following options, depending on the mode you have chosen:
In mode 6 (external boiler control), you will not see the following options. Refer to Section 6.4.10 for setup information for mode 6.
FOR ALL OTHER MODES:
APPLICATION | MODE | SYSTEM |
| SETTING | SENSORS USED |
• Parallel piping (non- |
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primary/secondary) |
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hydronic system | 1 | • None |
• DHW with or without |
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a tank aquastat |
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• Primary/secondary |
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hydronic system | 2 | • Bradford White System |
(pref'd by Bradford White) |
| Sensor (shipped |
• No outdoor reset |
| with each Copper Brute II) |
• Parallel piping (non- |
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primary/secondary) |
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hydronic system | 3 | • Bradford White System |
• DHW |
| Sensor (shipped (with |
• Advanced control |
| each Copper Brute II) |
capability |
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• No outdoor reset |
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• Parallel piping |
| • Bradford White outdoor |
primary/secondary) |
| sensor (optional |
hydronic system | 4 | part #R2014000) |
• Advanced control |
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capability |
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• Outdoor reset |
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• Primary/secondary |
| • Bradford White System |
hydronic system | 5 | Sensor (shipped |
(preferred by |
| with each |
Bradford White) |
| Copper Brute II) |
• Outdoor reset |
| • Bradford White outdoor |
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| reset sensor (optional part |
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| # R2014000) |
• Building automation |
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control |
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• Multiple boiler system | 6 | • None |
control |
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• Energy management |
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system |
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• Other external control |
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BOIL MASS (Boiler Mass): Always choose “1”. BOIL TARGET (Boiler Target Temperature):
Your desired
BOIL MIN (Boiler Minimum Temperature): This setting tells the Temperature Control to maintain at least this temperature, even if the PID logic determines a lower setting would save energy. The BOIL MIN should always be 120°F (49°C) or higher to prevent condensation, and can be set up to 10°F below your BOIL TARGET temperature. See Section 6.4.3 for more information.
BOIL MAX (Boiler Maximum Temperature): This setting tells the Temperature Control to limit the maximum outlet temperature to this setting or below, and determines how quickly the temperature control “stages down” or off. If the BOIL MAX setting is much higher than the BOIL TARGET temperature, the temperature control will fire all stages until the target temperature is reached, and then shut down all stages at once. To enable gradual staging down of the boiler as you approach your target temperature, set the BOIL MAX to the same setting as the target temperature. See Section 6.4.4 for more information.
DIFF (Boiler Differential): This setting is divided above and below the target temperature. The water will be allowed to cool ½ this setting below the target temperature before first stage fires, and will heat to ½ this setting above the target temperature before staging the boiler down. See Section 6.4.1 and Figure 28 for more information.
PUMP DLY (Pump Delay): On pump mounted units, the boiler mounted pump continues to run for the time selected after the heat demand in the system is satisfied. This setting also affects the 24VAC output on the “PMP” “PMP” terminals (see Section 5.2). These terminals can power a contactor for a larger system pump. Bradford White recommends a minimum pump
Table 11. Modes and Sensors for Applications. | Figure 25. Temperature Control. |