Service manual

1-1
INTRODUCTION
SM DLF 1-A.1 GB
1. INTRODUCTION
1.1 General
The new DLF DC INVERTER concealed split unit range comprises the RC (heat pump)
models as follow:
● DLF 25
● DLF 35
● DLF 50
● DLF 60
● DLF 72
Remote control compatibility
The DLF unit is compatible with remote controls RC3, RC4, RCW1, RCW2, and RC7.
Unlike standard units (fix RPM) that are selected according to their nominal capacity to
overcome the maximum required load; DC Inverter units can be selected to a smaller
nominal capacity range unit.
It made possible due to the ability of inverters to reach a much higher capacity level
(indicated as Maximum Capacity) which is around 115-130% of the nominal capacity.
1.2 Main Features
High level DC inverter system combined with concealed indoor units.
The system consists of high technology DC Brushless compressor, outdoor and indoor
fan motors.
The system adopts new ODP free refrigerant R410A and other environmental regulations
such as RoHS, WEEE, etc.
We believe this is the most suitable solution for residential and light commercial air
conditioning.
The indoor with only 200 mm height and together with the integrated water pump allows
best fit into very low ceiling space.
The units’ unique feature is the option of install the unit in horizontal or vertical position
without any additional work.
The unit low noise level (up to 25 DBA) fits perfectly for application as hotels, bed room
and small offices.
The DLF series benefits from the most advanced technological innovations, namely:
 Variable cooling and heating capacity from 30% to 115% (of rated capacity)
 High COP
 Low noise levels in both indoors and outdoors
 Extreme low silhouette, only 200mm.
 Pre-charged system up to 30m
 Tubing up to 50m length and 30m height difference
 Networking connectivity
 Dry contact output – Alarm
 Ready for base heater and crank case heater installation including software support
 HMI Display consists of 7-segments shows system diagnostics and setup (in some
models only)
 Monitoring software (PC port for high level service)
 Operating range cooling: From -10ºC to 46ºC outdoors
 Operating range heating: From -15ºC to 24ºC outdoors
CONTENT