6-3. Tools
6-3-1. Required Tools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant.
To reinforce the pressure-resisting strength, flare processing dimensions and opposite side dimension of flare
nut (For Ø12.7 copper pipe) of the refrigerant piping are lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
(Note 1)
When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2)
Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as
the general tools.
1) Vacuum pump
7) Screwdriver (+, –)
Use vacuum pump by attaching vacuum pump adapter.
8) Spanner or Monkey wrench
2) Torque wrench
9) Hole core drill (Ø65)
3) Pipe cutter
10) Hexagon wrench (Opposite side 4mm)
4) Reamer
11) Tape measure
5) Pipe bender
12) Metal saw
6) Level vial
Also prepare the following equipments for other installation method and run check.
1) Clamp meter
3) Insulation resistance tester
2) Thermometer
4) Electroscope
No.
1
2
3
4
5
6
7
8
9
10
Used tool
Flare tool
Copper pipe gauge for
adjusting projection margin
Torque wrench
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Usage
Pipe flaring
Flaring by
conventional flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
R410A
air-water heat pump installation
Existence of
Whether conventional
new equipment
equipment can be
for R410A
used
Yes
∗
(Note 1)
Yes
∗
(Note 1)
Yes
×
Yes
×
Yes
×
Yes
×
Yes
×
Yes
×
(Note 2)
×
Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant
¡
∗
(Note 1)
×
×
¡
¡
×
¡
×
FILE NO. SVM-
12042
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21
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Summary of Contents for RAV-SM566KRT-A
Page 13: ...RAV SM806KRT A FILE NO SVM 12042 13 ...
Page 111: ...TOSHIBA CARRIER CORPORATION ...
