Fujitsu Waterstage WS G140DC6 Series Maintenance Document page 66

Split system (Single phase and 3-phase type)
Control according to outdoor conditions with
room influence
The difference between the room temperature and
the setpoint value is measured and taken into
account for temperature control. This enables taking
into account possible heat inputs and ensures a more
even room temperature. Thus the differences with the
room temperature are taken into account and the
room temperature becomes more stable. The
influence of the difference is defined as a percentage.
The better the installation in the reference room
(accurate room temperature, correct installation
location, etc.) the higher will be the value that can be
set.
Example:

Approx 60%:
appropriate

Approx 20 %:
inappropriate
Activation of the function requires taking into account
the following requirements:

A room sensor
connected.

The "room influence" parameter must be set
between 1 and 99.

The reference room (where the room sensor
is installed) must not contain adjusted thermostatic
valves. Any thermostatic valves present in the rooms
must be fully open.
Room Temperature Limitation
Line no. Programming line
932 Room temperature limitation
The "room temperature limitation" function enables
shutting off the cooling circuit pump if the room
temperature falls below
temperature setpoint (with summer compensation line
920) by more than the adjusted differential.
The cooling circuit pump is reinitiated as soon as the
room temperature rises again above the current room
temperature setpoint.
66
the reference room
the reference room
must imperatively
the adjusted
Control according to room temperature only
The flow temperature is adjusted according to the
room temperature
temperature and its evolution. A slight increase in
room temperature, for example, causes an immediate
drop in the flow temperature.
Activation of the function requires taking into account
the following requirements:

A room
connected.

The "room influence" parameter must be set
to 100%.

The reference room (where the room sensor
is installed) must not contain adjusted thermostatic
valves. Any thermostatic valves present in the rooms
is
must be fully open.
is
be
If the room temperature limitation function is active,
no cooling demand will be transmitted to production.
room
The function is deactivated if:

no room temperature sensor is available

"Room influence limit." = ---

"Room influence" (928) = --- (simple control
according to outdoor conditions)
setpoint, the current
sensor must imperatively
Maintenance Document 1544-1
room
be