Heat Insulation; Pressure Measurement - Toshiba RAV-104NH-PE Installationsanleitung

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:
MODEL
(RAV-)
GB
134AH-PE
164AH-PE
264AH/AH8-PE
364AH8-PE
464AH8-PE
134A-PE
164A-PE
264A/A8-PE
364A8-PE
464A8-PE

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
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.
Tel: 01823 665660
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Additional amount of refrigerant to add at
installation site (kg)
Less Less Less Less
than than than than
20m 25m 30m 35m
0.18 0.35 —
0.18 0.35 —
0.18 0.35 —
0.18 0.35 0.53
0.25 0.5 0.75
0.18 0.35 —
0.18 0.35 —
0.18 0.35 —
0.18 0.35 0.53
0.25 0.5 0.75
!
ADD ONLY R407C REFRIGERANT TO THESE UNITS
During cooling
During heating
Note: During cooling operation, the pressure in the packed valve on the liquid side reduces.
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R P
EFRIGERANT IPING
±
50g
Less Less Less Less Less
than than than than than
40m 45m 50m 5m 20m
— — — 0.79 1.05
— — — 0.94 1.2
— — — 1.64 1.9
0.7 0.88 1.05 2.44 2.7
1.0 1.25 1.5 3.13 3.5
— — — 0.79 1.05
— — — 0.94 1.2
— — — 1.64 1.9
0.7 0.88 1.05 2.44 2.7
1.0 1.25 1.5 3.13 3.5
High-pressure side
Check joint in the outdoor unit
Gas side packed valve
~ 28 ~
www.heronhill.co.uk
Recharge amount if unit is reclaimed
±
(kg) 50g
Less Less Less Less Less
than than than than than
25m 30m 35m 40m 45m
1.23 1.4 — — —
1.38 1.55 — — —
2.08 2.25 — — —
2.88 3.05 3.23 3.4 3.58
3.75 4.0 4.25 4.5 4.75
1.23 1.4 — —
1.38 1.55 — —
2.08 2.25 — —
2.88 3.05 3.23 3.4 3.58
3.75 4.0 4.25 4.5 4.75
˚
C –
HEAT PUMP TYPES ONLY.
Low-pressure side
Gas side packed valve
Check joint in outdoor unit
Fax: 01823 665807
Less
than
50m
—
—
—
3.75
5.0
— —
— —
— —
3.75
5.0