WHHRM300DC & WHHR400DC 16
Chapter 6
Operation instructions
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ration of the appliance, these have been placed in a separate
installer parameters set. Consequently, these parameters can
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plained in section 6.7.2.
I1. Fixed imbalance. This can be used to keep the pressure
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atmospheric pressure.
Positive imbalance (+): the output fan ventilates the set va
lue in [m
3
/h] less than the input fan.
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lue in [m
3
/h] less than the output fan.
I2. No contact step 11
This setting determines the ventilation position when no
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start running at the ventilation position set here.
I3. Not applicable.
I4. Switch line 1 step.
Determines what position of the multiple switch matches
line 1 on the control unit.
I5. Switch line 2 step.
Determines what position of the multiple switch matches
line 2 on the control unit.
I6. Switch line 3 step.
Determines what position of the multiple switch matches
line 3 on the control unit.
7. Imbalance
permissible?
This determines whether for instance the frost protection
may affect the imbalance.
I8
Bypass mode.
There is a choice between 3 situations
I9. Hysteresis bypass.
Here can be entered how much the indoor temperature
may drop before the bypass closes or the inlet fan starts
running at the normal rpm.
I10. Constant pressure switched off.
Here it can be set whether in all cases the fans are running
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sure when a certain resistance is exceeded.
I11. Preheater or postheater.
This indicates whether a preheater or postheater is con
nected is.
I12. Temperature preheater.
This sets the offset temperature preheater.
I13 Filter message.
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I14 Presence of option pcb.
This indicates whether an option pcb is installed.
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Option setting when heat recovery is used in combination
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central h heat recovery.
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I16 Fan setting for central h heat recovery
Fan(s) off for central h heat recovery (only applica
ble if I15 = 1).
I17 Repeat time in hours for switching off the fan(s) selected
under I16 for central h heat recovery.
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under I16 for central h heat recovery.
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ted under I16 after switching on 230V for central h
heat recovery.
Refer to the table in section 6.7.3 for the factory setting
6.4 Installer settings
Mode 0
The bypass valve is not operated
Mode 1
(standard
setting)
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the temperature conditions are complied with
Mode 2
The inlet fan starts running at the lowest possi
ble rpm if the temperature conditions are comp
lied with
Setting I16
Situation fan(s)
1
Output fan off
2
Input fan off
3
Both fans off
Setting I11
Situation
0
No preheater or postheater
1
Preheater connected to basic pcb
2 & 3
Only use this setting for option pcb
