~ 28 ~
GB
R
EFRIGERANT
P
IPING
Additional Refrigerant
The amount of refrigerant put into the outdoor unit at the factory is sufficient to fill up to 20m of
refrigerant pipework.
If the length of the refrigerant pipework is 20m or less, addition of refrigerant at the installation site
is unnecessary.
If the length of the pipework exceeds 20m, extra refrigerant must be added. Refer to the table
below for details of the extra amounts.
Overcharge or undercharge of refrigerant in the outdoor unit will cause malfunction of
the compressor.
The prescribed amount of the replenishment of the refrigerant is shown in the table below:
!
!
!
!
134AH-PE
164AH-PE
264AH/AH8-PE
364AH8-PE
464AH8-PE
134A-PE
164A-PE
264A/A8-PE
364A8-PE
464A8-PE
0.18
0.35
—
—
—
—
0.79
1.05
1.23
1.4
—
—
—
—
0.18
0.35
—
—
—
—
0.94
1.2
1.38
1.55
—
—
—
—
0.18
0.35
—
—
—
—
1.64
1.9
2.08
2.25
—
—
—
—
0.18
0.35
0.53
0.7
0.88
1.05
2.44
2.7
2.88
3.05
3.23
3.4
3.58
3.75
0.25
0.5
0.75
1.0
1.25
1.5
3.13
3.5
3.75
4.0
4.25
4.5
4.75
5.0
0.18
0.35
—
—
—
—
0.79
1.05
1.23
1.4
—
—
—
—
0.18
0.35
—
—
—
—
0.94
1.2
1.38
1.55
—
—
—
—
0.18
0.35
—
—
—
—
1.64
1.9
2.08
2.25
—
—
—
—
0.18
0.35
0.53
0.7
0.88
1.05
2.44
2.7
2.88
3.05
3.23
3.4
3.58
3.75
0.25
0.5
0.75
1.0
1.25
1.5
3.13
3.5
3.75
4.0
4.25
4.5
4.75
5.0
ADD ONLY R407C REFRIGERANT TO THESE UNITS
!
Heat Insulation
Provide heat insulation on the refrigerant piping on both the liquid side and gas side separately,
and ensure that all joints in the insulation are vapour sealed.
Since the temperature of the piping on the gas side increases during heating operations, the heat
insulating material used must be able to withstand temperatures of more than 120
˚
C –
HEAT PUMP TYPES ONLY.
Use the pipe insulation supplied in the accessory pack to insulate the piping connecting section on
the indoor unit side.
!
!
!
Pressure Measurement
Connect the pressure gauge to the locations in the table below when measuring the pressure dur-
ing operation.
A gauge is required since check joints are used for the connecting sections.
!
!
High-pressure side
Low-pressure side
During cooling
Check joint in the outdoor unit
Gas side packed valve
During heating
Gas side packed valve
Check joint in outdoor unit
Note: During cooling operation, the pressure in the packed valve on the liquid side reduces.
MODEL
(RAV-)
Recharge amount if unit is reclaimed
(kg)
±
50g
Less
than
5m
Less
than
20m
Less
than
25m
Less
than
30m
Less
than
35m
Less
than
40m
Less
than
45m
Less
than
50m
Additional amount of refrigerant to add at
installation site (kg)
±
50g
Less
than
20m
Less
than
25m
Less
than
30m
Less
than
35m
Less
than
40m
Less
than
45m
Less
than
50m
Filled
at
Factory
Heronhill - for all your Toshiba requirements
Tel: 01823 665660
www.heronhill.co.uk
Fax: 01823 665807