NOTE
■
■
■
■
■
1
0
1
0
t
1
2
[8] Domestic water heating mode timer
The first set point heating/cooling is the set point
selected on the user interface.
Applies only to installations with a domestic hot water tank.
-
In heating mode the first set point can be a
The 'domestic water heating mode timer' field settings defines the
fixed value or weather dependent.
minimum and maximum domestic water heating times, minimum time
-
In cooling mode the first set point is always a
between two domestic water heating cycles by heat pump, and
fixed value.
booster heater delay time.
The second set point heating [7-03] should be
■
[8-
00] Minimum running time: specifies the minimum time
linked to the heat emitters which requires the
period during which heat pump domestic water heating mode
highest set point in heating mode. Example: fan
should be activated, even when the target domestic hot water
coil unit.
temperature for heat pump (T
HP OFF
) has already been
The second set point cooling [7-04] should be
reached.
linked to the heat emitters which requires the
■
[8-
01] Maximum running time: specifies the maximum time
lowest set point in cooling mode. Example: fain
period during which heat pump domestic water heating mode
coil unit.
can be activated, even when the target domestic hot water
The actual second set point heating value
temperature for heat pump (T
HP OFF
) has not yet been
depends on the selected value of setting [7-03].
reached.
- In case [7-03]=1.8~43.2°F (1~24°C), the
actual second set point will be first set point
heating increased with [7-03] (the maximum is
The actual maximum running time will automatically variate
between [8-01] and [8-01]+[8-04] depending on the outdoor
temperature. See figure in chapter "[8-04]" on page 32.
131°F (55°C)).
In this way the second set point heating is
linked to the first set point heating.
- In case [7-03]=77~131°F (25~55°C), the
actual second set point heating is equal to
[7-03].
The selection of second set point or first set point
Note that when the unit is configured to work with a
room thermostat (refer to "Room thermostat
installation configuration" on page 23), the
maximum running timer will only be taken into
account when there is a request for space cooling
or space heating. When there is no request for
room cooling or room heating, domestic water
is determined by the terminals (X2M: 1, 2, 4).
heating by the heat pump will continue until the
The second set point has always priority on the
'heat pump OFF tem
perature' (see field settings [6]
first set point.
on page 29) is reached. When no room thermostat
X2M
1 2 3 4
SP1
SP2
First set point contact
Second set point
is installed, the timer is always taken into account.
■
[8-02] Anti-
recycling time: specifies the minimum required
SP2
SP1
contact
interval between two heat pump domestic water heating
mode cycles.
The actual anti-recycling time will automatically variate
When dual set point control is enabled, heating/cooling
between [8-02] and 0 depending on the outdoor temperature.
selection always has to be done on the user interface.
See figure in chapter "[8-04]" on page 32.
NOTE
It is the responsibility of the installer to make sure no
unwanted situations can occur.
It is very important that the water temperature to the
floor heating loops never becomes too high in heating
mode or never too cold in cooling mode. Failure to
observe this rule can result in construction damage or
discomfort. For example in cooling mode condensation
on the floor can occur when water towards the floor
[8-00]
heating loops is too cold (dew point).
[8-01]
[8-02]
Domestic water heating (1 = active, 0 = not active)
Hot water request (1 = request, 0 = no request)
t
Time
If the outdoor temperature is higher than the field setting to
which parameter [4-
02] is set, then field settings of
parameters [8-01], [8-02], and [8-04] are not considered.
EDLQ036~054B EBLQ036~054BA6VJU1
Installation manual
Unit for air to water heat pump system
4PW56182-1
31
