Temperatures (cont) |
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Description/Action |
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• Tank Temperature - non adjustable - control system sensed |
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temperature from the Temperature Probe. | Temperatures |
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• Tank Probe Offset - adjustable user setting, range | Operating Set Point | 140°F | |
(factory setting 0°). | |||
The Tank Probe Offset is used to calibrate control system | Differential |
| 8°F |
temperature sensing. This can improve the precision of | Tank Temperature |
| 120°F |
temperature control in the storage tank and at points of use. | Tank Probe Offset |
| 0°F |
This feature can also be used to compensate for building |
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recirculation loops (hot water returning to the storage tank) that |
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may cause the heating cycles to terminate prematurely. |
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Example: If the current sensed temperature from the temperature | CHANGE | BACK | HELP |
probe is 120°F (49°C) and the Offset setting for the probe is | |||
adjusted to a value other than 0°, the control system would |
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calibrate or “offset” the sensed temperature from the probe. |
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Heating cycles would be activated and deactivated based on |
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the calibrated (offset) temperature. |
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Note: The Tank Probe Offset should only be used if the hot water supply temperature varies greatly from the Operating Set Point setting. These settings are adjusted in the same way described for the Operating Set Point and Differential Adjustment.
Heater Status
Description/Action | Display |
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Select Heater Status from the Main Menu and press the Operational | Top of Menu |
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Button under "SELECT" to enter this menu. This menu contains non | Heater Status |
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adjustable operational information. Use the Up & Down Buttons to | Status | Standby |
navigate the menu. | ||
• Status - displays the current Operating State, see Table 10 for | ECO Contact | Closed |
a description of the various operational states. | Blocked Inlet PS | Closed |
• ECO Contact, Blocked Inlet PS, Blocked Outlet PS, Blower | Blocked Outlet PS | Closed |
Prover PS - displays the current state of the switch contacts; | Blower Prover PS | Open |
open or closed. | Blower Low On | No |
• Blower Low On, Blower High On - displays whether the | Blower High On | No |
blower is running at high speed during Pre/Post purge and | BACK | HELP |
the Heating operational states or the blower is running at low | ||
speed during the Igniter Warm Up operational state; yes = |
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blower is running at the designated speed, no = blower is not | Bottom of Menu |
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running at the designated speed. |
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• Igniter On, Gas Valve On - displays whether or not the control | Heater Status |
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system is currently energizing these water heater components; | Blower High On | No |
yes = energized, no = | ||
• Igniter Current - displays whether or not the control system | Igniter On | No |
has detected the required minimum current. | Igniter Current | No |
• Flame Detected - displays whether or not the control system | Gas Valve On | No |
has detected Main Burner flame during ignition from the Flame | Flame Detected | No |
Sensor. | External Input Enable | No |
• External Input Enable - displays whether or not the S1 | Ignition Trials | 3 |
dipswitches have been configured to activate the Enable/ | BACK | HELP |
Disable circuit; yes = the Enable/Disable circuit has been | ||
activated, no = the Enable/Disable circuit has not been |
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activated. The factory setting is "no" or deactivated. |
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•Ignition Trials - displays whether or not the S1 dipswitches have been configured to allow 1 or 3 trials for ignition before declaring an "Ignition Failure" Fault condition. The factory setting is for 3 trials.
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