![background image](http://html1.mh-extra.com/html/carrier/38qus012d8s/38qus012d8s_service-manual_2560795028.webp)
Features
26
1.9 Twins Function
The twin system connects two indoor units of the same type and capacity to one outdoor unit in order to
ensure more air distribution in a large zone. The controller can only control the master unit. The slave
unit will work in the same state as the master unit.
1.10 Fresh air intake function(Optional)
Install one duct from the reserved fresh-air intake to outdoor.
Continually inhale the fresh air to improve the quality of the indoor air, fulfills air quality more healthy and
comfortable.
A ventilation motor (provided by the installer) can be installed inside the fresh air duct to improve the
fresh air volume. There are reserved ports for this motor on main PCB (Standard for 3D inverter units,
and only optional for DC inverter 53~160 units).
1.11 Built-in drain pump (Optional)
Built-in drain pump can lift the water to 750mm upmost, which widens the drainage piping range.
M
a
x
7
5
0m
m
Summary of Contents for 38QUS012D8S
Page 1: ...Contents i Energy Related Products SUPER DC INVERTER SERIES Service Manual...
Page 13: ...Service Space Indoor Units 11 3 Service Space 1000mm 1000mm 1000mm 1000m m Chart 3...
Page 16: ...Air Velocity Distributions Reference Data Indoor Units 14 30 42K Cooling Heating...
Page 17: ...Air Velocity Distributions Reference Data Indoor Units 15 48 55K Cooling Heating...
Page 22: ...Field Wiring Indoor Units 20 10 Field Wiring 42QTD018R8S 42QTD024R8S 42QTD036R8S...
Page 23: ...Field Wiring Indoor Units 21 42QTD048R8S 42QTD060R8S...
Page 29: ...Features Indoor Units 27...
Page 46: ...Service Space Indoor Units 44 3 Service Space...
Page 61: ...Wiring Diagrams Outdoor Units 59 3 Wiring Diagrams 38QUS018R8S...
Page 62: ...Wiring Diagrams Outdoor Units 60 38QUS024R8S...
Page 63: ...Wiring Diagrams Outdoor Units 61 38QUS036R8S...
Page 64: ...Wiring Diagrams Outdoor Units 62 38QUS036R8T...
Page 65: ...Wiring Diagrams Outdoor Units 63 38QUS048R8T 38QUS060R8T...
Page 87: ...Refrigerant pipe installation Installation 85...