9.1 Sub-menu HOT WATER
Table 17. Used to change the settings for hot water production.
Menu selection Meaning Factory setting
START Start temperature for hot water production. Shows the actual
weighted hot water temperature and the value within brackets
indicates the start temperature. ( = no hot water production)
(range: , 30°C / 55°C)
HOT WATER TIME Time for hot water production during combined hot water and
heating demand, in minutes.
20M
(range: 5M / 40M)
TOPH. TIME Time in hours that the legionella demand is to be fulfilled for
legionella operation to be considered complete.
0M
(range: 1M / 10M
HEATING TIME Time for hot water production during combined heating and hot
water demand, in minutes.
20M
(range: 5M / 40M)
TOPH. INTERVAL Time interval between peak heating chargings (anti-legionella
function) in days. Operating mode that permits auxiliary heater
must be selected.
7D
(range: , 1D / 90D)
TOPH. STOP Stop temperature for peak heat charging. Operating mode that
permits auxiliary heater must be selected.
60°C
(range: 50°C / 65°C)
INFL. H.W SENSOR. Water heater sensor’s influence compared with the peak sensor’s at
start of water heating.
65%
(range: 0% / 100%)
WEIGHT HOT WATER The calculated value of the hot water sensor directed towards the
peak sensor.
-
9.2 Sub-menu HEAT PUMP
Table 18. Used to change the heat pump's operating settings.
Menu selection Meaning Factory setting
INTEGRAL A1 The integral’s value for starting the heat pump. See Important
parameters for more information.
-60°min
(range: -250°min / -5°min)
HYSTERESIS If the difference between the actual supply temperature and the
calculated supply temperature is too great either the integral
value is set to start value A1 (the heat pump starts) or the value
is set to 0 (stops the heat pump).
10°C
(range: 1°C / 15°C)
MAX RETURN Stop temperature at high return from the heating system. 55°C
(range: 30°C / 70°C)
START INTERVAL Minimum time interval between two heat pump starts in
minutes.
20M
(range: 10M / 30M)
ALARM BRINE Gives an alarm when the outgoing brine temperature falls
below the set value.
(range: , -14°C / 10°C)
PRESS. PIPE Sensor on the compressor’s hot gas line. The value within brack-
ets indicates maximum permitted temperature. If this value is
exceeded, the compressor will stop and start again as soon as
the temperature has dropped. No alarm shown in the display,
however, a square is shown in the left, lower corner of the dis-
play.
140°C
OUTDOOR STOP Displayed only if AIR is selected. Lowest outdoor temperature
when the outdoor sensor stops the compressor and heating or
hot water are instead produced by the auxiliary heater.
-20°C
(range: -20°C / -1°C)
54 – Installation instructions VMBMA1002
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