Table of Contents
Advertisement
7.3 Switch clock
Basic functions for the switch clock can be preset
at INSTALLATION LEVEL under FUNCTIONS/OPERA-
TION and the values can be read and set at USER
LEVEL.
TIME/DATE
The current date and time can be set and adjusted whenever
required.
The switch clock automatically takes leap years into considera-
tion.
Automatic changeover between summer time/winter time to EU
Standard has been preset.
This changeover function can be blocked at INSTALLATION LEVEL
under FUNCTIONS/OPERATION.
TIME CHANNEL
Times and days can be set when the unit is to run at high speed,
low speed or be stopped.
Eight different time channels can be set. If the same in-operation
times are to apply every day of the week (Mon-Sun), you need
only program one time channel. Different operation times for
each day of the week can be programmed by programming a
time channel for each day (Mon-Fri, Sat-Sun or Mon, Tues, Wed,
etc)
The time can be set as 00:00-00:00 if the deviating in-operation
period is desirable for the entire 24 hours period.
YEAR CHANNEL
The year channels make it possible to set deviating in-service
times for parts of the day during certain parts of the year. Eight
different year channels (yearly time schedules) can be set. The
year channels over-modulate the time channel during the hours
of the day and the days that the year channel is active. The year
channel dates indicate the dates between which the year chan-
nel shall apply and the year channel hours indicate the hours of
the day between which the year channel will steer the controller
to operate the rotary heat exchanger at a specified speed. Other
times within the year channel still apply to that time channel.
The time can be set as 00:00-00:00 if the deviating in-operation
period is desirable for the entire 24 hours period.
Functions for summer night cooling, prolonged operation, etc.,
operate also when the year channel is active.
7.4 Filters
(and anti-frosting function of rotary heat exchanger)
There are two types of filter monitoring:
Calculated filter monitoring (preset at factory) monitors the fan's
speed increase conditional on the degree of fouling in the filter.
The calibration involves taking airflow and fan speed readings.
An alarm is initiated when the fan speed has increased by 10%
above the preset alarm limit.
Filter monitoring with a pressure sensor (accessory) measures
the pressure drop across the filter. The alarm limit is preset in Pa.
7.4.1 Readings
When reading the filter status, the first value shows current value
and the second value shows current alarm limit.
7.4.2 Calibration - Filters
The filters should be calibrated for the first time in conjunction
with commissioning, when the duct system, air devices and
eventual adjustment plates have been fitted and adjusted; after
that every time the filter media are changed.
14
www.swegon.com
SWITCH CLOCK
*SWITCH CLOCK*
TIME/DATE
TIME CHANNEL
YEAR CHANNEL
Settings:
Value
Setting
range
TIME/DATE
Day
Mon-Sun
Time
00:00-23:59
Date
Day/Month/Year
TIME CHANNEL 1-8
Operation
Low speed/High speed* High speed
Time
00:00-23:59
Period
Not active
Mon, Tues, Wed etc
Mon-Fri
Mon-Sun
Sat-Sun
YEAR CHANNEL 1-8
Operation
Not active
Stop/Low sp./High sp.
Time
00:00-23:59
Period
From Day/Month/Year
To Day/Month/Year
*) Shows Stop/Low speed/High speed if this function is selected
at INSTALLATION LEVEL under FUNCTIONS/OPERATION.
FILTERS
*FILTERS*
READINGS
CALIBRATION
*FILTERS*
READINGS
CALIBRATION
Calibration should be activated for both the supply air and the
extract air if both filters are changed or for only for one airflow
direction if only one filter has been changed.
When filter calibration has been activated, the unit runs at high
speed for about 3 minutes.
After the filter has been calibrated, a speed increase of 10%, or
a pressure rise (= fouling of the filters) of 100 Pa is permissible,
after which an alarm is initiated indicating a fouled filter.
The alarm limit can be changed at INSTALLATION LEVEL under
ALARM SETTINGS.
7.4.3 Calibration - Rotary Heat Exchanger
If the anti-frosting function accessory for heat exchanger is in-
stalled (see 9.6.1.1) calibration can be selected from this menu.
When calibration R-HX is activated the fans are accelerated to
high speed for about 3 minutes.
We reserve the right to alter specifications without notice.
GB.GOLDLP.170830
Factory
setting
Automatic
Current
Current
00:00-00:00
Not active
Not active
00:00-00:00
01/01/2005
01/01/2005
*FILTER CALIBRATION*
STD.FILTER
PREFILTER
HEAT EXCHANGER
Advertisement
Table of Contents
