Annex10—4
10.17.2AlarmLog
Thelast15alarmsareloggedanditisnotpossibletodeletethem.Notime‐stampsonthestoredalarms.
10.18ModifiedsoftwareinDanfossfrequencyconverterforthecompressor
ThestandardsettingsintheDanfossfrequencyconverterhavebeenchangedin2menuitems,becausethe
safetyfunctionsinthesemenusaretransferredtotheDVU‐internalcontroller‐LMC251;
‐Inthemenuitem5‐10Terminal18,digitalinput(start),thevaluemustbechangedfrom8to0.
‐Inthemenuitem5‐12Terminal27,digitalinput(freerunninginverted),thevaluemustbechanged
from2to0.
EspeciallyforcompressorVTZ121inDVU25andDVU30aswellasforthecompressorVTZ086
inDVU20
Inadditiontotheabove‐mentioned
modifications,themodificationsbelowarenecessaryforthe
compressorVTZ121inDVU25andDVU30;
‐ Valueinmenuitem1‐90changedto2
‐ Valueinmenuitem1‐93Terminal54changedto2
UsuallytheDanfossfrequencyconverterkeepsthech angetothestandard
factorysettingsto redforever,
butifthesoftwarehasbeenturnedbacktotheoriginalfactorysettingforsomereason,theabove‐
mentionedmodificationsmustbecarried.Ifthemodificationsarenotcarriedoutcorrectly,thecompressor
willnotbeswitchedonatall.
10.19Maintenance
Generalmaintenancemustbecarriedoutaccordingtonationalandlocalregulationsbyaskilledtechnician
fromacertifiedcompany.
ListofsparepartsaswellasdatasheetsfromthemanufacturersareavailableontheCDdeliveredwiththe
unit.
Airvolume,coolingcapacity,refrigerantcontent
DVU‐10 DVU‐15 DVU
‐20 DVU‐25 DVU‐30 DVU‐40
Widthinmm 970 1120 1270 1420 1570 1720
Heightinmm 970 1120 1270 1420 1570 1720
Lengthinmm 970 1120 1120 1270 1270 1270
Weightinkg 190 240 280 375 400 475
Powersupply
3phase+N+
PE
3x400V+
N+PE,
10A
3x400V
+N+
PE,16A
3x400V+
N+PE,
20A
3x400V+
N+PE,
25A
3x400V
+N+PE,
25A
3x400V+
N+PE,
32A
Nominalairvolume,m3/s 0.8 1.11 1.65 2.33 2.65 3.33
Minimumairvolume,m3/s 0.3 0.4 0.5 0.6 0.9 1.0
Testpressure,bar 28.6 28.6 28.6 28.6 28.6 28.6
Refrigerant R407C R407C R407C R407C R407C R407C
Refrigerantcontentinkg 3 3 4.5 6 6 9.8
Coolingcapacityatnominal
airvolumewhen:
Outdoor28°C/50%r.H.
Room25°C/50%r.H.
Supplyair18°C/90%r.H.
11.1kW 15.7kW 23.3kW 33.8kW 36.7kW 47.3kW
Nominalairvolume=highestairvolume,whereoutdoorairis28ºC/50%r.H.andischilledby10ºC.