Menu Displays You Might Need To Adjust Or Check - Bosch EHP 6-11 LW User And Installation Manual

Menu displays you might need to adjust or check

Temperature settings
Set the hysteresis for heat pump on/off switching on the return sensor T1 (GT1). A
lower value gives a shorter range between start and stop. Less than 5ºC should be
avoided.
Set the neutral zone for the mixing valve in a heating system with two heat curves.
In the neutral zone the mixing valve receives no signal to open or close. Only
applies when the sensor T4 (GT4) is connected.
Set the maximum temperature in the mixing valve circuit. You can, for example, set
a maximum temperature for the fl oor heating system. On delivery of the heat pump
the value is 60ºC. Only applies when the sensor T4 (GT4) is connected.
The heat pump is from factory preset to minimum temperature of heat transfer
fl uid (collector) ±0°C inlet and -2°C outlet. If anti-freeze liquid with a freezing point
of -15°C is used, the heat pump can operate at outdoor temperatures down to -5°C.
The preset values must be changed during commissioning. The settings in menus
9.4 and 9.5 must be changed to -7°C and -10°C respectively.
Hot water settings
Set the temperature in the hot water heater's outer shell. Note that the setting does
not apply to the temperature inside the hot water cylinder. The factory setting is
52ºC, but this temperature can be increased to max 55ºC if necessary. Only applies
when the sensor T3 (GT3) is connected.
Set the hysteresis for the hot water temperature. The function measures below
and above the value set in menu 2.3. Only applies when the sensor T3 (GT3) is
connected. Less than 4ºC should be avoided.
Clock setting of additional heat
You can set the control unit so that the additional heat is fully blocked during
certain periods of the day. Read more under the heading Extra functions (Customer
level 2)/Timer control about how to set the control unit.
Commiss./Ser vice
Make a check of all the functions before you commission the heat pump. You can
manually start and stop the pumps and valves from the menu Manual operation of
all functions.
Set when the additional heat should be activated. On delivery the heat pump is set
to activate the additional heat when necessary. Choose between Yes or No. If you
choose No, the additional heat only engages during alarms, extra hot water and hot
water peaks.
The function Fast restart means you do not have to wait for the normal restart time
to start the heat pump. If there is a need for heating or hot water the heat pump
starts within 20 seconds. The setting must be repeated each time you need to make
a fast restart.
Single phase models:
67
Commissioning the heat pump
Temperature settings
Heat curve
hysteresis 1.4
Return Select
Temperature settings
Mixing valve curve
Neutral zone 1.8
Return Select
Temperature settings
Mixing valve curve
max at GT4 1.9
Return Select
Hot water
Setting of
temperature.
Return Select
Hot water
Setting of
DHW hysteresis 2.4
Return Select
Clock setting
Add heat prog.time
accord. to clock 4.2
Return Select
Commiss./Service
Manual operation of
all functions 5.3
Return Select
Commiss./Service
Select function
add.heat yes/no 5.5
Return Select
Commiss./Service
Fast restart
of heat pump 5.6
Return Select