| Configuration Parameters - DHW Controller |
Configuration Parameters
| Ref | Description | default | range | |
| C1 | SACT | sensor action 0 use local sensor unless remote sensor connected see use of nviRemoteTemp for Open systems 1 average valid sensor values 2 maximum of valid sensor values 3 minimum of valid sensor values 4 use remote sensor as Occupation input , shorted is occupied 5 use nviRemoteTemp if valid, else remote hardwired if valid else local (note: 1-3 only work with 2-input hardware, available to special order) |
0 | 0 to 5 |
| C2 | SCAL | Calibrate sensor value | 0 | -5.0 to 5.0C |
| C3 | SPMD | Midpoint of setpoint adjustment range | 55 | 10 to 95C |
| C4 | SPRG | Range of setpoint adjustment about midpoint | 25 | 0 to 50C |
| C5 | SPTY | Setpoint type 0 use local setpoint 1 use remote setpoint, disable local OSS 2 Occupancy control from one or more Zones |
1 | 0 to 2 |
| C6 | SUMR | Summer temperature, used with LOFL to enable use of the immersion heater | 15 | 0 to 30C |
| C7 | LOFL | Low Flow temperature, used with SUMR to enable use of the immersion heater | 30 | 10 to 70C |
| C8 | VMDE | Valve mode, controls interaction between wet heating
and electric heating 0 DHW valve stays closed until boiler flow temperature greater than current DHW temperature. 1 boiler flow temperature ignored 2 Designed for systems where the DHW is heated from a Variable
temperature circuit, if the VT temperature is higher than the DHW temperature it is used
otherwise the water circuit is closed and the Electric heater used. Note set heat source
to zero for this option because it is not appropriate for the DHW demand to influence the
Boiler Controller. |
1 | |
| C9 | XHRS | Extension hours when override pressed outside occupation | 1 | 0 to 8.0 |
| C10 | FRSE | Sets the temperature rise which will be needed to complete the freezing protection routine | 0 | 0.0 to 10.0C |
| C11 | OCCO | When set controller will only run during the occupied period | 0 | 0 to 1 |
| C12 | HPRD | heating valve period or minimum on time | depends on driver type | 1 to 240 secs/10 |
| C13 | HDLY | Interlock delay; defines operation of Pump when LPHW
valve is used: negative value delays pump after LPHW valve opens positive value cause run on of pump after valve shuts down |
0 | -30.0 to 30.0 minutes |
| C14 | CPRD | electric heating period or minimum on time | depends on driver type | 1 to 240 secs/10 |
| C15 | CDLY | Interlock delay; defines operation of Pump when
Immersion Heater is used: negative value delays pump after Immersion heater starts positive value cause run on of pump after Immersion heater shuts down |
0 | -30.0 to 30.0 minutes |
| C16 | FRPT | Frost protect 0 no action 1 open heating valve 50% 2 open heating valve and run pump |
0 | 0 to 2 |
| C17 | MANL | Manual level , from Doorway | 0 | 0 to 100 % |
| C18 | STAT | selects thermostatic mode for control 0: Normal Fuzzy Logic Control 1: Thermostatic action; On/off control with +/- 4 degC deadband. Contact SeaChange for narrower deadband operation |
0 | 0 or 1 |
| C19 | AJST | Start Time Adjust; offsets DHW start time from Supervising Zone's times (e.g. Hot water times earlier than heating times for cleaners etc.) | 0.0 | -10.0 to 10.0 hours |
| C20 | AJSP | Stop Time Adjust; offsets DHW stop time from Supervising Zone's times (e.g. Hot water times later than heating times for cleaners etc.) | 0.0 | -10.0 to 10.0 hours |
| C21 | ALRM | alarm mode 0 ignore alarms 1 report alarms 2 report alarms, shut down all outputs on alarm 3 report alarms, shut down all outputs on STOP alarm or sensor fail alarm |
1 | 0 to 3 |
| C22 | ALST | not used | 0 | 0 to 1 |
| C23 | HTSC | Heat source | 1 | -1 to 100 |
Monitoring Parameters
| ref | Description | default | range | |
| C30 | FRST | frost protection mode | 0 to 1 | |
| C31 | OCCD | occupied | 0 to 1 | |
| C32 | OSRT | optimum start in operation | 0 to 1 | |
| C33 | OOFF | optimum off in operation | 0 to 1 | |
| C34 | ---- | not used | 0 to 1 | |
| C35 | RLYA | relay A status | 0 to 1 | |
| C36 | RLYB | relay B status | 0 to 1 | |
| C37 | RLYC | relay C status | 0 to 1 | |
| C38 | AUTO | Automatic/manual mode | 0 to 1 | |
| C39 | OVRD | override | 0 to 1 | |
| C45 | CGST | configuration mode |
Sensors
| ref | Description | default | range | |
| S1 (C50) |
HW T | DHW temperature | 5.0 to 35.0 C | |
| S2 (C51) |
DMND | heat output to drivers | 0 to 100% | |
| S3 (C52) |
HWSP | current setpoint | 10.0 to 95.0 C | |
| C53 | HTOP | heat output to actuators | 0 to 100% | |
| C54 | OPST | Optimum Start time (hours) | 0 to 24.0 | |
| C55 | OPOK | Optimum Start complete (OK) (hours) | 0 to 24.0
|
Knobs
| ref | Description | default | range | |
| K1 (C60) |
SPOC | Occupied setpoint | 55.0 | 10.0 to 95.0 C |
| K2 (C61) |
SPNO | Non Occupied setpoint | 10.0 | 5.0 to 95.0 C |
| C62 | SPSV | Supervised setpoint from Master controller | 0 to 95.0 C | |
| C63 | MXOS | Maximum Optimum Start time (hours) | 6.0 | 1 to 24.0 |
| C64 | MXOF | Maximum Optimum Stop time (hours) | 2 | 0 to 4.0 |
| C65 | MXVA* | Maximum voltage channel A | 10.0 | 0.0 to 10.0 volt |
| C66 | MNVA* | Minimum voltage channel A | 0.0 | 0.0 to 10.0 volt |
| C67 | MXVB* | Maximum voltage channel B | 10.0 | 0.0 to 10.0 volt |
| C68 | MNVB* | Minimum voltage channel B | 0.0 | 0.0 to 10.0 volt |
* /AOP versions only (to special order)