Wolf BMK - Ice Guard

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3062878_201707
Standard mask
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Main menu Contractor HR Ice guard
With heat recovery via plate heat exchangers or in run-around coil systems, a
temperaturesensoristtedintotheexhaustairpath,whichisusedtorecognise
icing-up. Heat recovery will be reduced if the exhaust air temperature falls below the
set limit. Where an imbalance between the supply and extract air can be accepted
(negative pressure inside the interior is prevented), the supply air fan speed will
initiallybereducedtothemaximumpermissibleimbalance.Withactiveowrate
imbalance,theentireairowcanstillberoutedviatheheatrecovery,evenwhen
outside temperatures are relatively low.
All functions in the "Ice guard" menu are active only if the outside temperature
< "Outside temperature limit".
Airowrateimbalanceshouldbeenabledonlyinaccordancewithlocalconditions
(e.g.smokeextractioninopenreplaces).
Winter start HR
When winter start HR is enabled, the heat recovery will be preheated by initially
switching the extract air fan for an adjustable delay.
Defrost function
When enabling the defrost function, the heat recovery will be fully defrosted by letting
the extract air fan run on for an adjustable period after shutdown.
Parameter Setting range Factory setting
Exhaust air temperature limit -20 - 10 °C 3 °C
Outside temperature limit -20 - 10 °C -3 °C
Enable air volumes imbalance Yes/No No
Max. air volumes imbalance - 30 - 0 % -30 %
Enable winter start HR Yes/No Yes
Lead time winter start 0 - 10 min. 2 min.
Enable defrost function Yes/No Yes
Run-on time, defrost function 0 - 60 min. 20 min.
Extract air fan speed in winter
start/defrost function
0 - 100 % 25 %
10.2.17 HR Ice guard
HR Ice guard
DISPLAYSELECTIONEsc BACK
Exhaust air temperature limit
3.0 °C
VS-01
10. Operating level 2
Please note