22
We reserve the right to make changes without notice
H 355 - IET 7143 - 7183 C1 Eng.
18.01.10 AM
Rev. 06
COSTER
22. DATA WHICH CAN BE SET ONLY VIA TELEMANAGEMENT
Certain functions with their respective parameters can be set and adjusted only via Telemanagement using a local
or remote PC and by an administrator authorised to operate at the highest level of the SWC 701 program.
22.
1
Alarm for absence of flow with temperature difference in progress
This alarm is in the GROUP ALA 1, number 4 (see page M.8, section 16).
As seen previously, this alarm is useful when, in the face of an existing difference in temperature between flow and
return, the meter for the flow of the vector fluid does not send any pulse for a certain period of time.
The factory setting for the temperature difference is set at
5°C
(absolute value, since this difference can be
positive or negative depending on whether heating or cooling is in progress).
The threshold time is
24 hours
(factory setting).
22.
2
Lockout of cooling energy metering when the flow temperature exceeds a certain value
This function blocks energy metering for summer conditioning when the flow temperature is above a certain value
(factory setting:
23°C
); this function is also enabled at the factory.
The purpose of this function is as follows:
If the cold generator (CHILLER) is switched off for some reason and the circulation pump continues to operate,
it may happen that the flow temperature rises and at the same time the return temperature also rises, and to a
greater extent, since it is heated by a larger number of consumers; the room is warm because there is no longer
conditioning.Without this function the refrigeration energy, which the rooms give up to the conditioning system in
the interval between raising the temperature and reading it, is metered.
22.
3
Calculation interval for the flow & the maximum power for the data logger
In section 17.
9
is illustrated the recording of power and flow peaks which are recorded in the DATA LOGGER every
week. The base time for the calculation of these two values (factory setting:
15 minutes
) can be adjusted.
22.
4
Setting dates of GMT and BST
The dates of GMT and BST can be set automatically by the unit (factory setting:
automatic
) or by hand.
22.
5
Auxiliary output for forwarding alarms and/or remote control
This auxiliary output (A) can be used for forwarding alarms and/or as a remote control operated via Telemanage-
ment.
The functions which can be programmed via Telemanagement are:
– ALARM ONLY: the output is enabled in the presence of one or more alarms (see section 16) chosen as required.
– REMOTE CONTROL ONLY: the output is enabled or disabled by the Telemanagement program.
– ALARM + REMOTE CONTROL: the sum of the two preceding functions.
– UNUSED: the output is not used.
The most common use of this output is that of switching off heating to a user of a zoned plant who is in arrears.
