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Climatix HERU® 400-2400
2018-02-13
CONTROL SYSTEM Function description
Heat exchanger
Rotation monitor RV1 monitors the rotation of the rotary heat exchanger, EMS alarm
goes to HMI.
EMS has a built-in safety disconnection switch. In the event of over-current, an alarm is
sent from the heat exchanger to HMI. The alarm is reset on EMS (by unplugging mains
voltage/ext. switch disconnector) and on HMI. Alarm class selectable in HMI.
EHC
GT9 consists of a low-temperature alarm (automatic return) and a high-temperature
alarm (manual return). If the GT9 alarm is triggered, EHC will be blocked and cool
down will begin. The electric heating alarm can be reset in HMI. If the high
temperature protection has also tripped, GT9 must also be reset on the EHC electric
heater.
In the event of fire/smoke alarm, there will be no cool down of the EHC electric heater.
GP5 monitors minimum supply air flow/pressure. If pressure falls below the set value,
EHC is blocked and the alarm will not be sent.
Efficiency measurement extract air
Temperature efficiency is calculated via temperature sensors GT2, GT42 and GT3,
provided that the heat exchanger signal is 100%.
An alarm will go off if efficiency falls below the set value.
Fire/smoke
When a signal is received from the parent fire/smoke fume system, the fire/smoke
alarm will go off.
In the event of alarm, the following functions can be selected:
The unit is stopped and the damper closes.
•
Extract fan speeds up to the fire setpoint and supply fan is stopped. Dampers
ST1/ST2 remain open.
•
Supply fan speeds up to the fire setpoint and extract fan is stopped. Dampers
ST1/ST2 remain open.
•
Extract fans speed up to the fire setpoint. Dampers ST1/ST2 remain
open.
ALARM
Deviation alarm: GT1, GT2, GT3, GP1, GP2, GP3, GP4, GF1 AND GF2
Recovery alarm (rotor control EMS)
Fan alarm
frost protection sensor GT8/Overheating electric heater GT9
Low efficiency
Multifunctional input
The following functions are located on the same signal input and cannot be combined.
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Control input 1: Timer input for additional speeds/
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Control input 2: additional speeds from BMS.
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Quick stop input
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Common filter alarm, active via pressure sensor, supplied as optional accessory.
OPTION via add-on module EXP-1 (9050054)
The following functions are optional accessories and are not included in the basic
model supplied by H. Östberg AB.
In addition to the respective sensors, an EXP1 is also required to obtain multiple I/Os
(inputs/outputs).
Summary of Contents for HERU 400-2400 S
Page 1: ...U S E R M A N U A L E N H E R U 4 0 0 2 4 0 0 T S HERU T HERU S...
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Page 14: ...14 120 Climatix HERU 400 2400 2018 02 13 Scope of assembly installation instructions...
Page 45: ...45 120 2018 02 13 Climatix HERU 400 2400 External components basic unit...
Page 97: ...97 120 2018 02 13 Climatix HERU 400 2400 Miscellaneous Menu structure Menu overview...
Page 98: ...98 120 Climatix HERU 400 2400 2018 02 13 Miscellaneous Start page Main index Unit...
Page 104: ...104 120 Climatix HERU 400 2400 2018 02 13 SERVICE HERU...
Page 111: ...111 120 2018 02 13 Climatix HERU 400 2400 SERVICE HERU...
Page 118: ...118 120 2017 11 03 Climatix HERU 400 2400 Troubleshooting...
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