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Product description
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Compress 3400i AWS – 6721852066 (2023/01)
3.2 Information on the indoor unit
The AWS E indoor units are intended for installation inside the building
and for connection to the outdoor unit.
Possible combinations of indoor unit with different outdoor units:
Table 5 Possible combinations
AWS E is equipped with an integrated electric booster heater.
3.3 Declaration of Conformity
The design and operating characteristics of this product comply with the
British, European and supplementary national requirements.
The UKCA and CE markings declare that the product
complies with all the applicable British and
European legislation, which is stipulated by
attaching these markings.
You can request the complete text of the Declaration of Conformity from
the UK address indicated in this document.
3.4 Type plate
The type plate of the indoor unit is on the side of the appliance. It
contains information on the part number and serial number as well as the
date of manufacture of the device.
3.5 Functional principle
The function is based on the demand-actuated control of the compressor
output and, if needed, by switching on the integrated electric booster
heater via the indoor unit. The control unit controls the outdoor unit
depending on the set heating curve.
If the outdoor unit is unable to satisfy the heat energy demand of the
house, the indoor unit automatically starts the integrated electric
booster heater which produces the desired temperature in the house
together with the outdoor unit.
The DHW heating is controlled via the TW1 sensor in the DHW cylinder.
During the heat-up phase of the DHW cylinder, the heating mode of the
heating system is temporarily switched off via a 3-way valve. Once the
DHW cylinder is heated up, heating mode is resumed by the outdoor
unit.
Heating and DHW mode when the outdoor unit is deactivated
When the outdoor temperature is below –20 °C (approximately) or
exceeds 45 °C (approximately), the outdoor unit is automatically turned
off and is unable to produce any heat. In this case, the integrated electric
booster heater of the indoor unit adopts the heating and DHW mode.
3.6 Product overview
Fig. 3 Components and pipework connections of the indoor unit with
electric booster heater (views with drip tray)
[1] Automatic air vent valve (VL1)
[2] Electric booster heater
[3] Pressure gauge
[4] Installer module
[5] Reset of the overheating protection
[6] Primary circulation pump (PC0)
[7] Flow to the heating system
[8] Drain of the pressure relief valve and condensates
[9] Return from the heating system
[10] Cable feed for power supply
[11] Cable feed for sensor, CAN-BUS and EMS BUS
[12] Refrigerant out to outdoor unit (liquid)
[13] Refrigerant in from outdoor unit (gas)
AWS E CS3400iAWS
CS3400iAWS 10 E CS3400iAWS 4 OR-S1)
1) A 5/8” to 1/2” adapter is provided with CS3400iAWS 4 OR-S
CS3400iAWS 10 E CS3400iAWS 6 OR-S
CS3400iAWS 10 E CS3400iAWS 8 OR-S
CS3400iAWS 10 E CS3400iAWS 10 OR-S
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001004822-001
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