Rotex RKHBH008BB3V3 Manual De Instalación página 82

INFORMATION
■
When setting [4-03]=1/2/3/4, 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 35).
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.
■ [4-03]=4, then booster heater operation is the same as
setting 2, except that the domestic water heating (heat pump
and booster) will operate according to the scheduled storage
and reheat function. See field settings "[6-03]" on page 31
and "[6-05]" on page 31.
CAUTION
For optional domestic hot water tank, the field
setting [4-03] shall be 0, 1, 2, 3, or 4.
In case [4-03]=5, there is an incorrect field wiring
between tank and indoor unit. The required
corrective action is described in "Symptom
8: [4-03] and maximum tank set point is not
according to the applicable tank" on page 46.
INFORMATION
[4-03]=3 (default), this setting is automatically
selected if the correct and complete wiring
connections between indoor unit and switch box
of the optional domestic hot water tank are done
BEFORE SS2-2 is set to ON. [4-03]=0~4 activate
the applicable logic and field settings for RKHW*.
(a) Only applicable for tank with built-in electrical booster heater
(RKHW*).
Backup heater operation (only for RKHTS)
INFORMATION
For tank without electrical booster heater (RKHTS), the
backup heater will be used in domestic water heating
mode.
The operation of the backup heater can altogether be enabled,
disabled, or limited.
■ [4-00] Status: defines whether backup heater operation is
disabled (0), enabled (1) or limited (2).
When [4-00]=2, the backup heater is only allowed during
domestic water heating mode.
INFORMATION
■
In special conditions, for example the outdoor
cannot work due to malfunction, the backup
heater will also be allowed to operate during
space heating.
■
If the backup heater operation is disabled
([4-00]=0), the domestic water will not be
heated.
Installation manual
29
<[5-03] independent
A
Space heating off temperature
(a)
CAUTION
For optional domestic hot water tank RKHTS, the
field setting [4-03] shall be 5.
[4-03]=5, this setting is automatically selected if the
RKHTS tank is connected and SS2-2 is set to ON.
[4-03]=5 activate the applicable logic and field
settings for RKHTS.
INFORMATION
■
Make sure that the domestic hot water set point is
according to your requirements.
Start with a low domestic hot water set point, and only
increase if you feel that the domestic hot water supply
temperature is not sufficient for your requirements
(this depends on your water using pattern).
■
Make sure the domestic water is not heated
unnecessary.
■ [4-02] Space heating off temperature: outdoor temperature
above which space heating is turned off to avoid overheating.
■ [4-06] Backup heater emergency operation: defines whether
backup heater is allowed (1) or not allowed (0) during
emergency operation.
Emergency operation will startup backup heater operation
during certain outdoor malfunctions.
■ [4-07] Backup heater second step: defines whether backup
heater second step is allowed (1) or not allowed (0).
In this way it is possible to limit the backup heater capacity.
INFORMATION
Only for RKHTS: If the storage temperature set point
is higher than 50°C, Rotex advises not to disable the
backup heater second step because it will have a big
impact on the required time for the unit to heat up the
domestic hot water tank.
Indoor unit for air to water heat pump system
RKHBH/X008BB
4PW62574-1 – 10.2010