RKHBH/X008AA
Indoor unit for air to water heat pump system
4PW50203-1A
Installation manual
1
C
ONTENTS
Page
Introduction........................................................................................ 1
General information ................................................................................... 1
Scope of this manual ................................................................................. 2
Model identification .................................................................................... 2
Accessories ....................................................................................... 2
Accessories supplied with the indoor unit .................................................. 2
Typical application examples ............................................................. 3
Application 1 .............................................................................................. 3
Application 2 .............................................................................................. 3
Application 3 .............................................................................................. 4
Application 4 .............................................................................................. 4
Overview of the indoor unit ................................................................ 5
Opening the indoor unit.............................................................................. 5
Main components....................................................................................... 6
Switch box main components .................................................................... 7
Functional diagram .................................................................................... 7
Installation of the indoor unit.............................................................. 8
Selecting an installation location................................................................ 8
Dimensions and service space .................................................................. 8
Inspecting, handling and unpacking the unit .............................................. 8
Mounting the indoor unit ............................................................................ 9
Installation of the EKHBDP drain pan kit (only for RKHBX models) .......... 9
Refrigerant pipework.................................................................................. 9
Water pipework .......................................................................................... 9
Charging water......................................................................................... 11
Piping insulation....................................................................................... 11
Field wiring............................................................................................... 11
Start-up and configuration ............................................................... 15
DIP switch settings overview.................................................................... 15
Room thermostat installation configuration.............................................. 15
Pump operation configuration .................................................................. 16
Domestic hot water tank installation configuration ................................... 16
Initial start-up at low outdoor ambient temperatures................................ 16
Pre-operation checks ............................................................................... 17
Powering up the indoor unit ..................................................................... 17
Setting the pump speed ........................................................................... 17
Field settings............................................................................................ 17
Field settings table ................................................................................... 23
Test run and final check ................................................................... 25
Automatic test run .................................................................................... 25
Test run operation (manual) ..................................................................... 25
Final check ............................................................................................... 25
Maintenance .................................................................................... 25
Troubleshooting ............................................................................... 26
General guidelines ................................................................................... 26
General symptoms................................................................................... 26
Error codes .............................................................................................. 27
Technical specifications ................................................................... 29
General .................................................................................................... 29
Electrical specifications............................................................................ 29
I
NTRODUCTION
General information
Thank you for purchasing this Rotex indoor unit.
The Rotex indoor unit is the indoor part of the reversible air to water
Rotex RRHQ heat pumps.These units are designed for wall mounted
indoor installation and used for both heating and cooling applications.
The units can be combined with Rotex fan coil units, floor heating
applications, low temperature radiators and domestic water heating
applications.
Heating/cooling units and heating only units
The Rotex indoor unit range consists of two main versions: a
heating/cooling (RKHBX) version and a heating only (RKHBH)
version.
Both versions are delivered with an integrated backup heater for
additional heating capacity during cold outdoor temperatures. The
backup heater also serves as a backup in case of malfunctioning of
the outdoor unit. The models are available with a backup heater
capacity of 3, 6 and 9 kW, and – depending on the heating capacity –
for two different power supply specifications.
RKHBH008AA***
RKHBX008AA***
Indoor unit for air to water heat pump system
Installation manual
READ THESE INSTRUCTIONS CAREFULLY BEFORE
INSTALLATION. KEEP THIS MANUAL IN A HANDY
PLACE FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO THE EQUIPMENT. BE SURE ONLY
TO USE ACCESSORIES MADE BY ROTEX WHICH ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR USE,
ALWAYS CONTACT YOUR ROTEX DEALER FOR
ADVICE AND INFORMATION.
THE UNIT DESCRIBED IN THIS MANUAL IS DESIGNED
FOR INDOOR INSTALLATION ONLY AND FOR AMBIENT
TEMPERATURES RANGING 0°C~35°C.
Indoor unit model
Backup heater capacity
Backup heater
nominal voltage
RKHB*008AA3V3
3 kW
1x 230 V
RKHB*008AA6V3
6 kW
1x 230 V
RKHB*008AA6WN
6 kW
3x 400 V
RKHB*008AA9WN
9 kW
3x 400 V
NOTE
An RKHBH/X008AA indoor unit can only be connected
to an outdoor RRHQ00*AD-series.
1D_IM_4PW50203-1A.book Page 1 Thursday, January 29, 2009 10:51 AM
