Rotex RHYKOMB33AA Installer's Reference Guide

8 Configuration
Installer reference guide
62
RVLQ05+08CAV4 + RHYHBH05AA + RHYHBH/X08AA +
RHYKOMB33AA
ROTEX HPU hybrid
4P355635-1 – 2013.05
Disinfection
Applies only to installations with a domestic hot water tank.
The disinfection function disinfects the domestic hot water tank by
periodically heating the domestic hot water to a specific temperature.
CAUTION
The disinfection function settings MUST be configured by
the installer according to the applicable legislation.
# Code Description
[A.4.4.2] [2-00] Operation day:
▪ 0: Each day
▪ 1: Monday
▪ 2: Tuesday
▪ 3: Wednesday
▪ 4: Thursday
▪ 5: Friday (default)
▪ 6: Saturday
▪ 7: Sunday
[A.4.4.1] [2-01] Disinfection
▪ 0: No (default)
▪ 1: Yes
[A.4.4.3] [2-02] Start time: 00~23:00, step: 1:00 (default:
23:00).
[A.4.4.4] [2-03] Temperature target: 55~80°C (default:
70°C).
[A.4.4.5] [2-04] Duration
Range: 5~60 minutes (default: 10
minutes)
00.00 22.00 24.0001.00 23.00 t
T
DHW
T
H
T
U
[2-02]
[2-03]
[2-04]
T
DHW
Domestic hot water temperature
T
U
User set point temperature
T
H
High set point temperature [2-03]
t
Time
WARNING
Be aware that the domestic hot water temperature at the
hot water tap will be equal to the value selected in field
setting [2-03] after a disinfection operation.
When the high domestic hot water temperature can be a
potential risk for human injuries, a mixing valve (field
supply) shall be installed at the hot water outlet connection
of the domestic hot water tank. This mixing valve shall
secure that the hot water temperature at the hot water tap
never rise above a set maximum value. This maximum
allowable hot water temperature shall be selected
according to the applicable legislation.
CAUTION
Be sure that the disinfection function start time [A.4.4.3]
with defined duration [A.4.4.5] is NOT interrupted by
possible domestic hot water demand.
INFORMATION
In case of error code AH and no interruption of the
disinfection function occurred due to domestic hot water
tapping, following actions are recommended:
▪ When the Domestic hot water > Type > Reheat or
Reheat + sched. is selected, it is recommended to
program the start-up of the disinfection function at least
4 hours later than the last expected large hot water
tapping. This start-up can be set by installer settings
(disinfection function).
▪ When the Domestic hot water > Type > Scheduled only
is selected, it is recommended to program a Storage
eco 3 hours before the scheduled start-up of the
disinfection function to preheat the tank.
INFORMATION
Disinfection function is restarted in case the domestic hot
water temperature drops 5°C below the disinfection target
temperature within the duration time.
Heat source settings
Auto emergency
When the heat pump fails to operate, the gas boiler can serve as an
emergency back-up heater and either automatically or non-
automatically take over the entire heat load. When auto emergency
is activated and a heat pump failure occurs, the boiler will
automatically take over the heat load. When a heat pump failure
occurs and auto emergency is NOT activated, the domestic hot
water and space heating operations will stop and need to be
recovered manually. The user interface will then ask the user to
confirm whether the boiler can take over the entire heat load or not.
# Code Description
N/A [4-06] If you want the gas boiler to take over the
entire heat load in case of a heat pump
failure, this setting MUST be set to 1
(default: 0).
[A.5.2.1] N/A Defines whether in an emergency situation
the gas boiler is allowed to automatically
take over the entire heat load or whether
manual confirmation is required.
▪ 0: Manual (default)
▪ 1: Automatic
Equilibrium temperature
Based on the ambient temperature, energy prices and the required
leaving water temperature, the user interface is able to calculate
which heat source can deliver the required heating capacity most
efficiently. However, to maximise the energy output of the heat
pump, it is possible to prevent the gas boiler from operating when
the ambient temperature exceeds a certain point (e.g. 5°C). This can
be useful to avoid too much gas boiler operation in case of incorrect
settings. When an equilibrium temperature is set, domestic hot water
operation is NEVER prohibited.
# Code Description
N/A [5-00] Defines if gas boiler operation is allowed
when the ambient temperature exceeds
the set equilibrium temperature during
space heating operation.
▪ 0: allowed (default).
▪ 1: NOT allowed.

Rotex RHYKOMB33AA Specifications

General

Brand	Rotex
Model	RHYKOMB33AA
Category	Boiler
Language	English