Hoval TopGas 80, Руководство по установке

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TECHNICAL INFORMATION
3.6 Adjustable parameters
Parameter 7 (2AH) – Set point DHW charging temperature –
Using this parameter the reference value for the DHW
temperature can be set where there is no room control
unit or other regulatory device installed. If a reference va-
lue is transmitted via an OT bus, the latter (value via OT)
will always override this parameter.
Parameter 8 (2AI) – Pump after-run time (DHW) –
During the time which can be set using this parameter
the pump continues to run after a phase of hot water de-
mand. The after-run time occurs before a switchover to
heating operation as well as before a switchover to to
stand-by mode (to be set at the RS-OT or control unit) or
when the firing device is switched OFF. It also occurs of
course when the desired DHW value has been reached
and further heating operation is not required.
Parameter 9 (2AJ) – Legionella protection time –
The boiler is periodically heated to the temperature defi-
ned using parameter 2AF for the time period which can
be set using this parameter for protection against legi-
onella infestation. If the parameter value is set to 0 the
legionella protection function is deactivated.
Parameter 10 (2AK) – Maximum fan speed in DHW mode –
The parameter defines the maximum rpm value for the
fan during DHW operation.
Parameter 18 (2BH) – Maximum heating temperature
(when minimum outside temperature has been reached) –
The value which can be set here determines the flow
temperature which is to be achieved when the outside
temperature falls below the value set using parameter 19
(2BI) (minimum outside temperature). (see diagram 2). If
the OT bus sends a reference value to the firing device,
this value is limited by the value set using parameter 18.
Parameter 19 (2BI) - Minimum outside temperature -
This parameter defines the minimum outside temperature
which marks the limit where the flow temperature target
is to be set at the temperature given by parameter 18
(2BH).
Parameter 20 (2BJ) – Minimum heating temperature
(when maximum outside temperature has been reached) –
If the outside temperature sensor registers the value set
using parameter 21 (2BK), then the system targets the
minimum heating temperature set using this parameter.
If the outside temperature exceeds the parameter value,
the heating demand is cancelled.
Parameter 21 (2BK) – Maximum outside temperature –
If the outside temperature exceeds the values set using
this parameter, the heating demand is cancelled. At the
point where the parameter value is reached the system
targets the minimum heating temperature which has
been set using parameter 20 (2BJ).
Parameter 22 (2BL) –Restart delay following temperature
blocking in heating operation mode –
When the boiler is shut down on account of a temperature
limit being exceeded, i.e. a set point plus offset, the boiler
restart is delayed for the period which can be set using
this parameter – irrespective of whether the hysteresis
set for the next heating demand has expired or not.
Parameter 23 (2BM) – Restart delay following heating
demand during heating operation –
Immediately following the end of a heating demand pha -
se boiler restarts are delayed. That is to say, if the boi-
ler is shut down on account of a reference value trigger
being sent from the OT bus to the firing device, a restart
(triggered by another reference value being reached) is
delayed for at least the period of time which can be set
using this parameter.
Parameter 24 (2BN) – Pump after-run time (heating ope-
ration –
During the time which can be set using this parameter the
pump continues to run after a phase of heating
demand.
Parameter 25 (2BO) – Maximum fan speed in heating
operation mode –
This parameter is used to set the maximum permitted fan
speed in % in heating operation mode.
Parameter 60 (2GE) – Waiting time after opening main
gas valve or activation of combustion chamber ventilator
–
After a burner demand is received, the boiler start is de-
layed by the amount of time set using this parameter.
While this time elapses the display shows the digit ‘0’.
The interval is required for the main gas valve to open or
for pre-ventilation via the combustion chamber ventilator.
Parameter 61 (2GF) - External main gas valve (possibly
an LPG valve) / combustion chamber ventilator present –
This parameter is used to indicate whether an external
main gas valve or a combustion chamber ventilator is in-
stalled.
Parameter 62 (2GG) – DHW charging (switch / pump) –
This parameter is used to indicate whether a separate
pump is present for DHW charging or there is simply a
switch for accessing the main pump in use.
The setting «0» means a KKP (pump outlet) and additio-
nally a deflector (deflector outlet) is used. The setting «1»
means, that the pump at the pump outlet (X8-5/6) is only
working in HZ-mode and the WW-pump at the outlet X8-
7/8 is getting active in the WW-mode.
Parameter 63 (2GH) – Pump – minimum PWM value –
This parameter is used to determine the minimum permit -
ted capacity of the PWM pump in %. The minimum PWM
value is effective when the boiler output is at a minimum.