253061809_1210
Contractor level parameters
eBUS feed
Parameter HG34
HG34
2
Factorysetting:2
Settingrange:0/1/2
Individual setting: ______
ParameterHG34 enablestheselection ofthreetypesofeBUS
feed.
Thesettingshavethefollowingmeaning:
0→eBUSfeedswitchedOFF
1→eBUSfeedswitchedON
2→automaticeBUSfeed
0 - 5 V input
for telecontrol system
Parameter HG35
HG35
0
Factorysetting:0
Settingrange:0/1
Individual settings: _________
ParameterHG35enablesaswitchingofthe0-5Vinputfora
telecontrolsystem.
Thesettingshavethefollowingmeaning:
0 → Outside temperature sensor connection
Duringcommissioningthecontrolunitcheckswhetherandwhere
anoutsidetemperaturesensorisconnected.
1 → 0 - 5 V input (no outside temperature sensor connected)
Thevoltagesignalatthe0-5Vinputisusedascontrolvariablefor
defaultingthesetheaderboilerwatertemperature(independentof
thesettingoftheprogrammingselectorattheBM).
LimitingthesetowtemperaturebyTV
max.
orTK
max.
.
Theboilercircuitpumpbecomesthefeedpump.
PumpONwithburnerdemand.
Pumprun-oninaccordancewithparameterHG07.
Dependingonthetransferfunction(seediagram),thesettemperature
iscalculatedsubjecttotheinputvoltage.
Setboilerheader
temperaturein[°C]
Setboilerheader
frostprotection
Inputin[V]
51
38
90
Note:
Priortoconnectingthetelecontrolsystem,setparameterHG35to1.Set
systemparameterA06(settingtheexternalsensor)to"0".Switchoffthe
mainspower,connectthetelecontrolsystemtoplug"AF".Switchthe
mainspowerONagain.Otherwiseanoutsidetemperaturesensorcould
alreadybedetectedatlowvoltage→FC15.