Daikin HXHD125A7V1B Installation Manual page 39

NOTICE
■
If the system is configured according to pattern A, nor
the remote controller room thermostat function (default
OFF if multiple set point is selected) nor the external
room thermostat (as replacement of the remote
controller room thermostat function) may be used.
■
The remote controller water temperature value is
ignored when pattern A is active.
■
It is the installers responsibility to make sure no
unwanted situations can occur (e.g. too high water
temperatures towards floor heating loops, etc.).
■
It is the installers responsibility to make sure the water
circuit is well balanced (e.g. when a domestic hot
water request occurs, there will be sufficient flow
towards other appliances as well, etc.)
■
Daikin does not offer any temperature reducing
device (TRD). This system only provides the
possibility to use multiple set points.
■
It is advised to only use the automatic storage
functionality for domestic water heating when
applying pattern A (with a high set point temperature).
Multiple set point control according to pattern B
The basic setup of multiple set point pattern B is the same as a
normal classic design, so again no domestic water heating and space
heating is possible simultaneously.
Multiple set point pattern B is focussed on space heating operation
and allows using multiple water set points in combination with the
remote controller or external room thermostat.
The configuration of pattern B allows 3 space heating set points and
1 domestic hot water set point.
The request signals for space heating can be implemented in 2
different ways (installer choice):
■
thermo ON/OFF signal (from external room thermostat)
Space 1 Space 2
TRD TRD
■
status signal (active/not active) from the corresponding
temperature reducing device
Space 1 Space 2
TRD TRD
Indoor unit
DHW Domestic hot water tank
TRD Temperature reducing device
Space 0 Space 0
Space 1 Space 1
Space 2 Space 2
Balancing bottle
A Classic room thermostat control with remote controller room
thermostat function and external room thermostat
HXHD125A7V1B
VRVIII system indoor unit
4PW62584-1A – 11.2010
A
Space 0
DHW
A
Space 0
DHW
Space 0, not using a temperature reducing device (TRD), always
needs to be linked with the highest water temperature set point and
can be controlled by the remote controller room thermostat function
or by the external room thermostat. Settings for space 0 can be made
on the remote controller (same as during normal operation
The electrical connections on the unit should be done on the optional
demand PCB.
The configuration of pattern B is done by field settings:
1 Select the appropriate pattern: [7-02]=1
Turn on multiple set point 1: [7-03]=0 ➞ [7-03]=1
2
Turn on multiple set point 2: [7-04]=0 ➞ [7-04]=1
3 Enter the temperature multiple set point 1: [A-03] (see below)
Enter the temperature multiple set point 2: [A-04] (see below)
Configuration example:
Set Field
point setting
Space 0 65°C Remote
controller
Space 1 45°C [A-03]
Space 2 35°C [A-04]
Resulting heat pump water
Pattern B can also be used to do some primary multi zoning (if all set
point temperatures are selected the same, no temperature reducing
device (TRD) is required).
Multiple thermo ON signals for 3 rooms can be generated. Thermo
OFF signals are only valid if all requests are OFF.
NOTICE
■
Leaving water control is not allowed for pattern B.
■
It is the installers responsibility to make sure no
unwanted situations can occur (e.g. too high water
temperatures towards floor heating loops, etc.).
■
It is the installers responsibility to make sure the water
circuit is well balanced (e.g. when a domestic hot
water request occurs, there will be sufficient flow
towards other appliances as well, etc.)
■
Daikin does not offer any temperature reducing
device (TRD). This system only provides the
possibility to use multiple set points.
■
When space 0 is in thermo OFF, but space 1 or 2 are
active, space 0 will be fed with water at a temperature
equal to the highest set point of spaces 1 and 2.
This can lead to unwanted heating of space 0.
(1) When using the automatic weather dependent function for setting of
space 0, you have to make sure that the lowest possible temperature of
the space 0 floating set point (including the possible negative shift value)
is higher than the temperature set point of spaces 1 and 2.
This means that field setting [3-03] of space 0 needs to be higher than
temperature set point of spaces 1 and 2.
(1)
).
Thermo status
OFF ON OFF OFF
OFF ON/OFF ON ON
OFF ON/OFF OFF ON
OFF 65°C 45°C 45°C
Installation manual
OFF
OFF
ON
35°C
37