Sub-Menu Aux. Heater - Danfoss DHP-A Installation Manual

Installation Guide
Menu selection Meaning
ALARM BRINE Gives an alarm when the outgoing brine temperature falls below the set value.
PRESS. PIPE Sensor on the compressor's hot gas line. The value within brackets 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 display.
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.
Time in seconds. Indicates how often the shunt is to adjust its opening.
SHUNT TIME
The cooling shunt works towards the set temperature.
SHUNT COOL-
ING
COOLING TEMP Set point value of the supply temperature at cooling mode.
9.3

Sub-menu AUX. HEATER

Menu selection Meaning
MAX STEP
Maximum number of permitted steps for auxiliary heating.
mitted (Means that only AUTO or HEAT PUMP can be selected.)
INTEGRAL A2 Two conditions must be fulfilled in order to start the auxiliary heater: the integral's value
to start must be less than integral A2, and the supply temperature must be 2°C lower than
the calculated temperature. See Service Instructions for more information.
If the difference between the actual supply temperature and the calculated supply tem-
HYSTERESIS
perature is too great (see Service Instructions for more information), either the integral val-
ue is set to start value A2 (starts the auxiliary heater) or to 0 (stops the auxiliary heater ).
Refers to main fuse in the unit, in amperes
MAX CURRENT
HOT WATER STOP Stop temperature for hot water during AUX. HEATER. The value is read off by the hot wa-
ter sensor.
DELAY AFTER EVU Time in minutes. Indicates how many minutes after EVU are to pass before the auxiliary
heater may be activated.
See table below for more information
EXT.AUX.HEATER
EXT.AUX.HEATER
Menu selection Meaning
Indicates whether an external auxiliary heater is installed in the system.
EXT.AUX.HEATER
Indicates the value of the integral when external auxiliary heater is connected.
INTEGRAL A3
Indicates how long the external auxiliary heater must continue to be active after its de-
TURN OFF DELAY
mand is no longer needed.
REV.V. HOT WATER Indicates whether the exchange valve for hot water is located before or after the exter-
nal auxiliary heater. (Determines whether the external auxiliary heater may produce hot
water.)
Indicates whether the external auxiliary heater can be used for anti-legionella. The ex-
TOPH. AUX
change valve must be positioned after the external auxiliary heater.
44
Domestic heat pumps
VMGFQ102
Factory setting
10°C)
140°C
-20°C(range: -20°C /
-1°C)
60S(range: 10S / 99S)
18°C(range: 0°C / 30°C)
18°C(range: 5°C / 30°C)
= no auxiliary heating per-
Factory setting
-300(range: -990 / IN-
TEGRAL A1 - 10)
0M(range: 0M / 180M)
INT / EXT
Danfoss Heating Solutions
(range: , -14°C /
Factory setting
2
(range: , 1, 2, 3, 4,
5, +4, +5)
-600(range: -50 /
-990)
20°C(range: 5°C /
30°C)
20A(range: 16A / 35A)
60°C(range: 50°C /
65°C)
30M(range: 0M /
120M)
/ ON
/ ON