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DRAIN PIPING
W2. For indoor unit (W2 kg)
Depending on the number of connected indoor units, select the
refrigerant quantity from the following table:
Indoor Unit Capacity (HP)
Refrigerant additional quantity (kg)
Maximum additional refrigerant charge must not exceed 6.0kg.
Nº of IU x 0.3 kg/unit or 0.5 kg/unit = additional charge (W2 kg) ≤ 6.0 kg
W3. For indoor unit 8HP and 10HP only (W3 kg)
Additional refrigerant charge is 1kg/unit of 8HP and 10HP indoor
units.
N of 8HP and 10HP IU x 1.0 kg/unit.= Additional charge (W3 kg)
W4. For indoor unit (W4 kg)
Depending on the ratio of the indoor unit connection capacity.
IU Capacity Ratio is ≤ 100% = 0.0kg
IU Capacity Ratio is > 100% = 0.5kg.
10 DRAIN PIPING
When the base of the outdoor unit is temporarily utilized as a
drain receiver and the drain water in it is discharged, this drain
boss is utilized to connect the drain piping.
RAS-(4-6)FS(v)NME
Drain hole
(connexion for DBS-26)
Drain hole(*)
(*) To cover these drain holes, sealing pads are included in DBS-26 kit.
11 ELECTRICAL WIRING
11.1 GENERAL INFORMATION
!
D A N G E R
•
Do not connect or adjust any wiring or connections unless the
main power switch is OFF. Check and test to ensure that if there
is more than one source of power supply, all are turned OFF.
•
Use an earth leakage breaker with medium sensitivity, and an
activation speed of 0.1 or less. If this is not fitted, there is a risk
of electric shock and/or fire.
•
Install an earth leakage breaker, fuse or circuit breaker of the
specific capacity for each outdoor unit power line. Not fitting it
may cause an electric shock or fire.
•
Check that the earth wire is securely connected, tagged and
locked in accordance with national and local codes.
32
PMML0511 rev.1 - 06/2019
0.4 - 1.0
1.5 - 6.0
0.3
0.5
RAS-(8-12)FSXNME
RAS-(4-6)FS(V)NME
1
RAS-(8-12)FSXNME
2
RAS-(4-6)FS(V)NME
4
RAS-(8-12)FSXNME
3
W5. For each CH-Box connected (W5 kg)
If CH-Boxes (multiple branch type only) are connected,
additional refrigerant charge is required. Select adequate
refrigerant charge from the following table.
CH-Box
CH-
Model
AP04MSSX
Additional
Refrigerant
0.1
Charge (kg)
W. Calculation of additional charge (W kg)
Heat pump (W kg) = W1 + W2 + W3 + W4
Heat recovery (W kg) = W1 + W2 + W3 + W4 + W5
Total refrigerant charge in the system
Total refrigerant charge = W + W
Connecting procedure for DBS-26
1 Insert the rubber cap into the drain
boss up to the extruded portions.
2 Insert the boss into the unit base
and turn approximately 40 degree
counterclockwise.
3 Drain boss is 32 mm (O.D.).
4 A drain pipe should be field-supplied.
?
N O T E
•
Do not use this drain boss set in a cold area, because the drain
water may freeze. This drain boss is not sufficient to collect all the
drain water. If collecting drain water is completely required, provide
a drain-pan that is bigger than the unit base and install it under the
unit with drainage.
•
For RAS-(4-6)FS(V)NME, 1 kit DBS-26 needed; for RAS-(8-12)
FSXNME, 2 kits DBS-26 needed.
!
C A U T I O N
•
Before any work to the electrical wiring or regular inspections, switch
off the mains power supply of the indoor and outdoor units. Wait three
minutes before starting installation or maintenance work.
•
Make sure that the interior and exterior fans have come to a complete
standstill before starting work on the electrical wiring or regular
inspections.
•
Protect cables, the drainage pipe, electrical components, etc. from
rodents and insects; otherwise these might damage unprotected
components and this could result in fire.
CH-
CH-
AP08MSSX
AP12MSSX
AP16MSSX
0.2
0.3
0
CH-
0.4
Drain hole
(DBS-26)
Drain pipe
Extruted
portions
Drain boss
Rubber
cap
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