The DATA Extra HIU, Installation Instructions DE2, 12th August 2021
Factory Settings
DHW Settings
The DHW settings are factory set, and these can only be changed by connecting a laptop directly to the SLIM HIU communication cable
and using the
HIU Monitor Application Software
available from Thermal Integration. If the DATA Extra HIU is connected to a BMS, it is
possible to alter the settings through the BMS ModBus interface.
The factory settings are as follows:-
Setting
Limits
Set Value
Temperature - DHW
45 - 60C
55C
Pressure
Manual / Auto
Auto
Ecoheat Time (keep warm)
Off,15, 30, 60, 120, Always
Off
Ecoheat Temperature
25 - 60C
N/A
Legionella Prevention Cycle
On / Off
Off
District Heating Warmup Boost
8 - 20 l/min
20 l/min
Central Heating Settings
Setting
Limits
Set Value
Temperature - CH
20 - 80C
60C
Pump Over-run
any
60 secs
Return Temperature Monitoring
On / Off
Off
Return Temperature Limit
30 - 55C
55C*
CH Control Valve Pre-set
10 - 100%
100%
If the Return Temperature Monitoring function is set to 'Off' the Return Temperature Limit is irrelevant.
Multi-Stage DHW Priority
If DHW priority is not suitable for the installation location (for instance in a restaurant or hair dressers, where hot water draw-offs may
be frequent and therefore hold off the heating output), the primary flow rate available for the HIU to operate simultaneously in both
DHW and CH modes, does not need to be the sum of the two circuits. This is due to the Multi-Stage DHW Priority feature built into the
HIU software.
This feature allows peek or multi-staged flow limits to be set, which enables the DHW priority to be off-set against a proportion of the
heating flow. Although it is possible to set specific flow rates and reductions, An example of the basic principle is explained below:-
DHW primary flow rate =
0 to 25%, no effect on the heating output
25 to 50%, heating output reduced by 25%
50 to 75%, heating output reduced by 50%
75 100%, heating off completely.
Page 12
Summary of Contents for DATA Extra HIU
Page 7: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 Dimensions Page 7...
Page 15: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 HIU Schematic Page 15...
Page 17: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 Wiring Schematic Page 17...
Page 33: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 Page 33...
Page 37: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 Page 37...
Page 38: ...The DATA Extra HIU Installation Instructions DE2 12th August 2021 Page 38...
