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Heat Pump, Split System, Single Service, 3 phase
3.5.1 Principle of Operation
DHW production starts when the temperature inside
the tank is 7°C less than the setpoint temperature.
The setpoint can be either a "reduced" or a "nominal"
setpoint, depending on time program 4. During the
programmed time periods it is the nominal setpoint
which is active, and outside of these periods it is the
reduced setpoint which is active. Thus, to avoid
accidental DHW charge boosting outside of the
nominal time periods, we recommend having a
reduced setpoint as low as possible in order to avoid
the
starting
of
DHW
programmed time period.
•
T
: the temperature outside the time period.
reduced
This DHW temperature can be reached with the
heat pump alone. This requires that the
temperature does not exceed 35°C.
•
T
: the temperature within time period 4,
nominal
which is approached first with the heat pump then
with the electric auxiliaries or the boiler backup (if
necessary).
Both of these temperatures are
adjustable (settings 1610 and 1612).
If the installation's power supply contract includes a
Peak/Off-Peak rate subscription, the heaters will be
controlled by the power rates and T
reached only during Off-Peak Hours. This requires
3.6
Test Mode
3.6.1 Sensor and Input Test Mode
LINE
7730
7820
7823
7824
7830
7831
7832
7833
7841
7846
7855
7914
7915
7916
Maintenance Document 1394-1
production
outside
will be
nominal
SENSOR
INPUT
B9
BX1
BX4
BX5
BX21 (1)
BX22 (1)
BX21 (2)
BX22 (2)
H1
H2
H3
EX4
EX5
EX6
that input E5 is wired as shown on Figure 1: Typical
Wiring of External Devices.
If no special power supply contract has been
subscribed to, or if the DHW input is not wired, T
will be reached according to time program 4 / DHW.
The T
temperature can thus be reached at any
nominal
time, including during the day.
During the day, DHW has priority over heating,
however, DHW production is controlled by cycles
which regulate the times allocated to heating and to
the
DHW production in case of simultaneous demands.
A DHW boost function is available on the user
interface front panel. This DHW boost enables the
DHW to be heated up to T
day. The boost function is automatically cancelled
after a given time (which can be configured). The
boost function can be used only if DHW programming
has been performed. If the DHW is in nominal mode
(nominal
T)
inoperative.
Legionella protection cycles can be programmed.
WATERSTAGE
Outdoor temperature
DHW temperature
Heat pump flow temperature
Heat pump return temperature
Circuit 1 flow T if 2 circuits (or sw pool)
defrost information
swimming pool operation (if optional)
outdoor unit fault (370)
Auxiliary load-shedding (EJP)
Peak/Off-peak rates
External fault (369)
at any time during the
nominal
the
boost
function
nominal
is
obviously
21
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