| Control Functions |
type |
256 |
260 |
261 |
262 |
264 |
268 |
265 |
269 |
| Boiler Operation |
|
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|
Number of Stages |
1 |
1 |
2 |
2 |
4 |
9 |
3 |
1 |
|
Boiler Differential |
A/M |
A/M |
A/M |
A/M |
A/M |
A/M |
A/M |
|
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Boiler Minimum Supply |
|
M |
M |
M |
M |
M |
M |
M |
|
Boiler Outdoor Reset |
|
|
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Boiler Post Purge |
|
F |
F |
M |
A/M |
A/M |
A/M |
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Characterized Heating Curve |
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Equal Run Time Rotation |
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Fire Delay |
|
F |
M |
M |
M |
M |
M |
F |
|
Fixed Last |
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Fixed Lead |
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Heating Curve |
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|
|
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Heating Curve Shift |
|
M |
A/M |
M |
A/M |
M |
M |
M |
A/M |
Indoor Temperature Feedback |
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|
|
|
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Interstage Delay |
|
A |
A |
A |
A |
A |
A |
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Lo / Hi Fire Boiler Rotation |
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Lockout Differential |
|
|
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Minimum On Time |
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PID Staging |
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Reset Ratio |
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Soft Start |
|
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Starting Water Temperature |
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|
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Steam Established |
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|
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Warm Weather Shut Down (WWSD) |
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Water Temperature Boost |
|
A |
|
A/M |
M |
M |
M |
|
|
| Modulation Operation |
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|
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0 - 20 mA or 4 - 20 mA Outputs |
|
|
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Minimum and Maximum Modulation Settings |
|
|
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Parallel or Sequential Modulation |
|
|
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| Domestic Hot Water (DHW) Operation |
|
|
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DHW Boiler Reset Override |
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DHW Condensing Boiler |
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DHW External Demand |
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DHW Internal Demand (Sensor) |
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DHW Post Purge |
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DHW Priority |
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DHW Setback |
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| Setpoint Operation |
|
|
|
|
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Setpoint Boiler Reset Override |
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|
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|
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Setpoint Priority |
|
|
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|
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| Protection |
|
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Pump Exercising |
|
|
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| Setback |
|
|
|
|
|
|
|
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Timer, 7 Day |
|
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Water Temperature Boost (Indoor Feedback) |
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|
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Water Temperature Setback |
|
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Zone Temperature Setback |
|
|
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| Display |
|
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Temperature Display |
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|
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Usage Display |
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| Other |
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120 or 240 V (ac) Rated Relay Outputs |
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Auto Test |
|
|
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|
|
|
|
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CSA C US Approved |
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Error Messages |
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Function Indicators |
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|
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Locking Cover Option |
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Plug In System |
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A = Automatic Adjustment, F = Fixed, M = Manual |
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Copyright ©2006 tekmar Control Systems Ltd.