Oilon RE 28 05, Installation And Operation Manual

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1 Introduction
1.1 Heat pumps covered in the manual
Model Item code Refrigerant
RE 28 05 RE2805 R-410A
RE 33 05 RE3305 R-410A
RE 38 05 RE3805 R-410A
RE 42 05 RE4205 R-410A
RE 48 05 RE4805 R-410A
RE 56 05 RE5605 R-410A
RE 66 05 RE6605 R-410A
RE 76 05 RE7605 R-410A
RE 84 05 RE8405 R-410A
RE 96 05 RE9605 R-410A
1.2 Product description
RE 05 heat pumps
RE 05 heat pumps come in two configurations: RE 28–48 heat pumps have a single
compressor unit, while RE 56–96 heat pumps have two compressor units. All RE heat
pumps include a control cabinet. The standard position of the control cabinet is on the
unit's left side, but it can be moved to the right side if needed.
RE 28–48 models
By default, the unit’s automation system has been configured for one domestic hot
water tank, one buffer tank for a heating circuit, and one heating circuit controlled by
a three-way valve. The automation system supports numerous other connections,
systems and accessories. Alternative system configurations are presented in separate
technical manuals for the automation system.
RE 56–96 models
The heat pump includes two compressor units, which can be used independently or
they can be joined together. The automation system has a separate controller and
separate electrical connections for each unit. If the units are used separately, they
operate independently of each other.
In standard two-unit deliveries, the units’ automation systems have been connected
for joint use (in a cascade configuration). In cascade systems, one of the heat pump
controllers operates as the master and controls the entire system, while the other, the
slave controller, operates under the master controller. The upper unit is the master unit
and the lower unit the slave unit.
M8009 2147EN 3 (74)