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2
Capacity
kBtu/h(RT)
96(8RT)
120(10RT)
144(12RT)
168(14RT)
Model
192(16RT)
CHV6-072URB
CHV6-096URB CHV6-120URB
CHV6-144URB
CHV6-168URB
CHV6-192URB
(6RT)
Measuring Instrument
and Tool
R407C
R410A
Reason of Non-Interchangeability
and Attention (★
: Strictly Required)
Application
Pipe Cutter
Chamfering
Reamer
○
——
Cutting Pipe
Removing Burrs
Flaring Tool
○ ○■
Flaring for Tubes
Extrusion －
Adjustment
Gauge
■
*
R410A requires high pressure resistance piping and larger
flaring. In case of material 1/2H, flaring is not
available.(The flaring tools for R410A are applicable to
R407C)
Dimensional Control
of Tube after Flaring
Pipe Bender
○ ○
*
In case of material 1/2H, bending is not available. Use elbow
for bend and braze.
Bending
Expanding
Tool
○ ○
*
In case of material 1/2H, expanding of tube is not available.
Use joint for connecting tube.
Expanding Tubes
Torque
Wrench
*
For Φ1/2in., Φ5/8in. of R410A, spanner size is up to 5/64in.
Connection of Flare Nut
Brazing Tool
○ ○
*
Perform brazing work properly (adjustable flame and heating
method, filler applicable)
Nitrogen Gas
○
*
Strict control against contamination (Blow nitrogen during
brazing.)
Prevention from Oxidation
during Brazing Air-tight test
Refrige-
rant
Pipe
Lubrication Oil
(for Flare
Surface)
■
* Use a synthetic oil which is equivalent to the oil used in the
refrigerant cycle.
* Synthetic oil absorbs moisture quickly.
Applying Oil to the Flared
Surface
Refrigerant
Cylinder
●
■
*
Check the cylinder for the corresponding refrigerant.
★Liquid refrigerant charging is required regarding zeotropic
refrigerant.
Refrigerant Charging
Vacuum Pump
○
★The current pumps are applicable. However, it is required to
mount a vacuum pump adapter which can
prevent reverse flow
when a vacuum pump stops, resulting in no reverse oil flow.
Vacuum Pumping
Vacuum Pumping, Vacuum
Holding, Refrigerant Charg-
ing and Check of Pressures
Control Valve
● ■
Charging
Hose
● ■
Charging
Cylinder
×
*
Use the weight scale when charging
Refrigerant Charging
Weight Scale
○ ○
——
Measure refrigerant quantity
●
※■
Adapter for
Vacuum
Pump Reverse
Flow prevention
Refrige-
rant
Charge
Vacuum
Drying
Interchangeable
with R410A
*
The current gas leakage detector (R22) is not applicable due
to different detecting method.
Refrigerant Charging Gas
Leakage Check
■
For Φ1/4in.，Φ3/8.、Φ3/4in., spanner size is the same.
○
*
No interchangeability is available due to higher pressures
when compared with R22. Connection diameter is different:
R410A: UNFl/2, R407C: UNF7/16
★Do not use old ones to the different refrigerant. Otherwise,
mineral oil will flow into the cycle and cause sludges, resulting
in clogging or compressor failure.
※ interchangeable with R407C
●
※■
Interchangeable
with R410A
*
■: only for Refrigerant R410A (not interchangeable with R22)
○ : interchangeable with current R22
× : Prohibited
● : only for Refrigerant R407C (not interchangeable with R22)
○
○
○
●
○
Brazing for Tubes
Refrigerant
Gas Leakage
Detector
Interchangeability
with
R22
2.Before Installation
Line-Up of Outdoor Unit
【Basic Unit】
Capacity
kBtu/h(RT)
Model
×
-
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