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Safety Requirements
ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD.
Do not touch the unit or the controller if your hands are wet.
DO NOT spray water on the indoor unit for any reason.
Do not replace a fuse with a fuse of a different rating. Do not use a jumper wire to replace a fuse. Do not insert
your hands, tools or any other item into the air intake or air outlet at either the indoor or outdoor unit.
Do not allow children to operate the system.
Model Number Identifi cation
Brand/Family
V = Variable Refrigerant Flow (VRF)
OS = Dedicated Outdoor Air Concealed Ducted Indoor Models
System Piping
CAUTION
VRF system piping is customized for each installation.
The LVSS piping report is an engineered design that
must be followed. The piping diagram or diagrams
included within the LVSS report have been prepared
based on the information provided to the Lennox VRF
applications department.
When the indicated lengths change from the fi gures
stated within the report, it is imperative that prior to the
commencement of the refrigerant pipe work installation,
Lennox VRF applications department are informed of
these proposed changes.
Upon receipt of this new information the Lennox VRF
applications department will confi rm any changes that
may be applicable to this installation. If changes are
required, a new piping diagram will be produced and will
supersede all other previously provided documents.
Failure to provide this information regarding changes
to the original design may lead to insuffi cient capacity,
equipment failure, warranty being made void and the
refusal to commission the system.
!
V OS A 036 S 4 - 1 P
Unit Type
Major Design Sequence
A = 1st Generation
Nominal Cooling Capacity - Btuh
036 = 36,000 Btuh
048 = 48,000 Btuh
054 = 54,000 Btuh
072 = 72,000 Btuh
WARNING
Cooling Effi ciency
S = Standard Effi ciency
2
Voltage
P = 208/230V-1 phase-60hz
Minor Design Sequence
1 = 1st Revision
2 = 2nd Revision
3 = 3rd Revision
Refrigerant Type
4 = R-410A
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