Wolf BWL-1S-07 - Additional Functions; Active Cooling; Power-OFF

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Additionalfunctions
30 Additionalfunctions
30.1 Activecooling
The split air/water heat pump can, in addition to heating/DHW mode, also work in active cooling mode.
During active cooling, the cooling capacity of the heat pump is transferred to the heating system.
Thefollowingconditionsmustexistforactivecooling:
1) System structure in accordance with hydraulic diagram with active cooling option
2) Systemcongurationwithactivecoolingoption(WP001=01,05,14,15,51)
3) E1 input function (WP002) = DPM/MaxTh
4) Dew point monitor (DPM) or jumper connected to input E1
5) Dew point monitor (DPM) operational and not triggered
6) Enable active cooling (WP058) = ON
7) Active cooling standard setting = ON
8) No heating or DHW requirement present
9) Operating mode set for heating circuits to be cooled = automatic mode
10) Time within switching times set for active cooling (act. time program cooling)
11) Conditions for active cooling according to cooling curve setting
12) Outside temperature > outside temperature setting for enabling cooling (WP053)
13) Return temperature > set return temperature
14) Room temperature > day temperature for cooling
(whereBM-2installedinroomtobecooledasremotecontrolandroominuenceactivated)
15) U=1.2V...4.0VatinputE2/SAFbyBMS(systemconguration51only)
NotesontheBM-2programmingunit:
− RoominuenceisonlyactiveiftheBM-2programmingunitisinstalledasaremotecontrol.
− Whenroominuenceison,thestandardsetting"Daytemperature"(forheatingmode)isavailableand,
for systems with active cooling, the standard setting "Day temperature, cooling" (for cooling mode).
The "Cooling curve" submenu is displayed only when the "Active cooling" standard setting is enabled in the
contractor level.
− Temperature selection from -4 to +4 (parallel offset) and economy factor 0...10 (reduction in economy mode);
no effect in active cooling mode.
30.2 Power-OFF
The power supply utility (PSU) can temporarily block compressor or compressor and electric heater operation using
anexternalswitchingcommand(oatingcontactonterminalX1–9/10).
Whenthecontactisopen,thepower-OFFfunctionisactive,i.e.regularoperationofthecompressoror
compressorandelectricheaterisinhibitedviathecontrolunitoftheBWL-1S(B).Thepower-OFFfunction
isinactivewhenthecontactisclosed.
System frost protection (via compressor, electric heater and external additional heat generator), as well as the
function of heating/mixer circuit pumps, remain operational when power-OFF is enabled.
The active power-OFF status message is shown on the status or operating mode displays and in the
"Displays"/"Heating appliance" submenu on the AM display module and BM-2 programming unit.
Notes:
− For systems that can be temporarily blocked/shut down by the power supply utility (power-OFF), a
correspondingswitchingsignal(oatingcontact)oftheenergysupplyutilitymust be connected to terminal
X1-9/10 in order to signal the power-OFF period to the control unit of the BWL-1S(B).
− If the power-OFF function is not used, insert a jumper at terminal X1-9/10.
− The electrical connection of the power-OFF function must be made in accordance with the stipulations of the
local power supply utility.
Terminals X1 – 9/10: Function:
Open Power-OFF active
Bridged Heat pump standard mode
Contractor parameters Meaning Setting:
WP025 Smart Grid OFF (= factory setting)
WP092 Power-OFF for elec. heater OFF, ON