Fujitsu WATERSTAGE 112 Maintenance Document page 96

Heat Pump, Split System, Single Service, 3 phase
Input H2 Function
Input H2 is available only on the control extension
module. No more than two extension modules can be
fitted into an installation. In this case the settings on
Line no. Programming line
6046 Function Input H2
6047 Contact type H2
6048 Function value Contact H2
Function Input H2
•
Operating mode changes:
Heating circuits
o
The operating mode for the heating circuit(s) is
changed via terminal H2 (e.g. telephone contact) to
protection mode.
Domestic hot water
o
Domestic hot water charging lock is active only with
setting 1 (heating circuits + DHW). All temperature
demands from heating circuits and DHW are ignored.
Frost protection is active during this time.
•
Error/alarm message
The closing of input H2 causes an internal error
message from the controller.
•
Dewpoint sensor
A dewpoint sensor can be connected to input H2 to
detect condensation.
If it responds, the cooling circuit is immediately
switched off.
The cooling circuit is reactivated only if the sensor
goes off after the adjustable lock time (line 946) has
elapsed.
•
Swimming pool release
This function enables the swimming pool to be
directly heated with the boiler and pump H2 via an
external device (e.g. manual switch).
Sensor Corrections
Line no. Programming line
6100 Readjustm outside sensor
The outdoor temperature measuring value can be
corrected within a range of +/- 3 K.
96
contact H2 will be assigned to the module with
address 1. Only one function can be assigned to
input H2 even if there are two modules.
Direct charging always requires release on input H2.
For configuration: set input H2 to "Swimming pool
release" and wire the contact.
Warning:
If there are two extension modules (e.g.: 2
pool) the second zone module have the address 1
and the pool module must have the address 2
because contact H2 enabling the swimming pool
mode must be wired to the address 1.
Contact type H2
•
Normally closed
The contact is normally closed and must be open to
activate the selected H2 function.
•
Normally open
The contact is normally open and must be closed to
activate the selected H2 function.
Function value Contact H2
The function value contact H2 is operated only when the
parameter 6046 is setting on "release swimming pool".
This function allows to set the temperature of the water
which goes on the swimming pool heat exchanger.
nd
zone +
Maintenance Document 1394-1