Rotex RKHBH008BA Manual De Instalación página 70

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[4] Backup/booster heater operation and space heating off
temperature
Backup heater operation
The operation of the backup heater can altogether be enabled or
disabled, or it can be disabled depending on operation of the booster
heater.
■ [4-00] Status: defines whether backup heater operation is
enabled (1) or disabled (0).
■ [4-01] Priority: defines whether backup heater and booster
heater can operate simultaneously (0), or if the booster
heater operation has priority over the backup heater
operation (1), or if the backup heater operation has priority
over the booster heater operation (2).
NOTE
When the priority field setting is set to
ON (1), space heating performance of the
system might be decreased at low outdoor
temperatures, since in case of domestic
water heating demand the backup heater will
not be available for space heating (space
heating will still be provided by the heat
pump).
When the priority field setting is set to
ON (2), domestic water heating performance
of the system might be decreased at low
outdoor temperatures, since in case of space
heating demand the booster heater will not
be available for domestic water heating.
However domestic water heating by heat
pump will still be available.
When the priority field setting is set to OFF
(0),
make
consumption does not exceed supply limits.
Space heating off temperature
■ [4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off, to avoid
overheating.
Booster heater operation
Applies only to installations with a domestic hot water tank.
The operation of the booster heater can be enabled or limited
depending on outdoor temperature (T
temperature (T
) or operation mode of the heat pump.
DHW
■ [4-03] Booster heater operation: defines whether the optional
booster heater operation is enabled (1) or has certain
limitations (0/2/3).
Explanation of settings of [4-03]
Booster heater will/can only operate if domestic hot water mode
is activated (w).
■ [4-03]=0, then booster heater operation is only allowed
during "[2] Disinfection function" and "Powerful domestic
water heating" (see operation manual).
This setting is only recommended in case the capacity of the
heat pump can cover the heating requirements of the house
and domestic hot water over the complete heating season.
The result of this setting is that the domestic hot water will
never be heated by the booster heater except for
"[2] Disinfection function" and "Powerful domestic water
heating" (see operation manual).
If the booster heater operation is limited ([4-03]=0)
and the ambient outdoor temperature
the field setting to which parameter [5-03] is set and
[5-02]=1, then the domestic hot water will not be
heated.
The consequence of this setting is that the domestic
hot water temperature (T
heat pump OFF temperature (T
setting of [6-00] and [6-01] in "[6]" on page 26.
Installation manual
25
sure
that
electrical
power
), domestic hot water
A
is lower than
T
A
) can be maximum the
DHW
). Refer to
HP OFF
■ [4-03]=1, then booster heater heater operation is only
determined by booster heater OFF temperature (T
booster heater ON temperature (T
timer. Refer to setting "[7-00]" on page 27 and "[7-01]" on
page 27.
■ [4-03]=2, then booster heater operation is only allowed if heat
pump is out of "operation range" of heat pump domestic
water heating mode (T
A
water temperature is 2°C lower then the heat pump OFF
temperature (T
) for domestic hot water mode
HP OFF
(T
>T
–2°C). (Refer to setting [5-03] on page 26,
DHW
HP OFF
[6-00] on page 26 and [6-01] on page 26).
Results in the most optimum coverage of domestic hot water
heated by the pump.
■ [4-03]=3, then booster heater operation is the same as
setting 1, except that booster heater is OFF when the heat
pump is active in domestic hot water mode. The
consequence of this functionality is that setting [8-03] is not
relevant.
Results in optimum coverage of domestic hot water heated
by heat pump in relation with [8-04].
When setting [4-03]=1/2/3, the booster heater
operation can still be restricted by the schedule
timer as well. I.e., when booster heater operation
is preferred during certain period of the day. (See
operation manual)
When setting [4-03]=2, the booster heater will be
allowed to operate when T
of the status of [5-02]. If bivalent operation is
enabled and permission signal for auxiliary boiler
is ON, the booster heater will be restricted even
when T
<[5-03]. (See "[C-02]" on page 29).
A
Booster heater is always allowed during powerful
and disinfection function, except for the period
that the backup heater operation is required for
safety reasons and [4-02]=1.
[5] Equilibrium
temperature
temperature
Equilibrium temperature — The 'equilibrium temperature' field
settings apply to operation of the backup heater.
When the equilibrium temperature function is enabled, operation of
the backup heater is restricted to low outdoor temperatures, i.e. when
the outdoor temperature equals or drops below the specified
equilibrium temperature. When the function is disabled, operation of
the backup heater is possible at all outdoor temperatures. Enabling
this function reduces the working time of the backup heater.
■ [5-00] Equilibrium temperature status: specifies whether the
equilibrium
temperature
disabled (0).
■ [5-01] Equilibrium temperature: outdoor temperature below
which operation of the backup heater is allowed.
Indoor unit for air to water heat pump system
BH OFF
) and/or schedule
BH ON
<[5-03] or T
>35°C) or domestic hot
A
<[5-03] independent
A
and
space
heating
priority
function
is
enabled
(1)
RKHBH/X008BA
4PW54224-1A
),
or
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