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Replacement Condenser Only
Conventional Line Set Installation
Unit Installation
mrcool.com
Page 20
Existing Air Handler
Accessory copper
90 pipe Q+y*2
Purge with
Nitrogen
Weld joint
Purge with
Nitrogen
MRCOOL Universal Series DC Inverter
MRCOOL Universal Series
Must open stop
valves after pulling
vacuum and before
powering on
WELD Type Complete Unit Replacement
Weld joint
Weld joint
Air Handler
DC Inverter
Open stop valves
with allen wrench
only after nishing
line set connections
and before
powering on the
unit
must have 410
TXV Biow valve
Must install lter drier biow
with this installation type
Must install lter drier biow
with this installation type
Must Purge with Nitrogen
before brazing joints
Must Purge with Nitrogen
before brazing joints
Fig. 2.17
Fig. 2.18
IMPORTANT
In order to prevent the
refrigerant piping from
sweating, they can be
insulated with
closed-cell insulation
foam for refrigerant
line sets which is
readily available.
IMPORTANT
The existing air handler in
the house must be a 410
air handler and use a 410
TXV Biflow Valve
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