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Daikin 2MXU50GV1B [8/17] Refrigerant piping work
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■English 6
English
Refrigerant Piping Work
1.
Installing outdoor unit.
1) When installing the outdoor unit, refer to “Precautions for Selecting the Location” on page 2 and the “Outdoor Unit
Installation Drawings” on page 3.
2) If drain work is necessary, follow the procedures below.
2.
Drain work.
1) Use
drain plug for drainage.
2) If the drain port is covered by a mounting base or floor surface, place
additional foot bases of at least 30mm in height under the outdoor
unit’s feet.
3) In cold areas, do not use a drain hose with the outdoor unit.
(Otherwise, drain water may freeze, impairing heating performance.)
3.
Refrigerant piping.
CAUTION
1) Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)
2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)
3) Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.
Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.
Drain-water hole
Bottom frame
Hose (available commercially,
inner dia. 16mm)
Drain plug
C
C
Flare nut tightening torque
Flare nut for φ6.4
14.2-17.2N
m
(144-175kgf
cm)
Flare nut for φ9.5
32.7-39.9N
m
(333-407kgf
cm)
Flare nut for φ12.7
49.5-60.3N
m
(505-615kgf
cm)
Valve cap tightening torque
Liquid side
3/8 inch 1/4 inch
21.6-27.4N
m
(220-280kgf
cm)
Gas side
1/2 inch
48.1-59.7N
m
(490-610kgf
cm)
21.6-27.4N
m
(220-280kgf
cm)
Service port cap
tightening torque
10.8-14.7N m
(110-150kgf
cm)
Torque wrench
Piping union
Flare nut
Do not apply refrigeration
oil to the outer surface.
Flare nut
Apply refrigeration oil to
the inner surface of the
flare.
Do not apply refrigeration
oil to the flare nut avoid
tightening with over torque.
Spanner
[Apply oil] [Tighten]
01_EN_3P234246-1.fm Page 6 Thursday, November 6, 2008 9:42 PM
Содержание
- Installation manual r410a split series 1
- Models 1
- Mxu40gv1b 2mxu50gv1b 1
- Outdoor unit 1
- Umeda center bldg 2 4 12 nakazaki nishi kita ku osaka 530 8323 japan 2
- Caution 3
- English 3
- Safety precautions 3
- Warning 3
- Accessories 4
- Caution 4
- English 4
- English 2 4
- Precautions for selecting the location 4
- Caution 5
- Outdoor unit installation drawings 5
- Precautions for humidifying hose installation work 5
- Connections connection port 6
- English 4 6
- How to use reducers 6
- Installation 6
- Precautions on installation 6
- English 7
- If the outdoor unit is positioned higher than the indoor units if the outdoor unit is positioned otherwise if lower than one or more indoor units 7
- Outdoor unit installation guideline 7
- Piping to each indoor unit room a b 15m max 7
- Selecting a location for installation of the indoor units 7
- The maximum allowable length of refrigerant piping and the maximum allowable height difference between the outdoor and indoor units are listed below the shorter the refrigerant piping the better the performance connect so that the piping is as short as possible shortest allow able length per room is 3m 7
- Total length of piping between all units 30m max 7
- Wall facing one side 7
- Walls facing three sides 7
- Walls facing two sides 7
- Where a wall or other obstacle is in the path of outdoor unit s intake or exhaust airflow follow the installation guidelines below for any of the below installation patterns the wall height on the exhaust side should be 1200mm or less 7
- Caution 8
- Drain work 8
- Installing outdoor unit 8
- Refrigerant piping 8
- Refrigerant piping work 8
- Purging air and checking gas leakage 9
- Refrigerant piping work 9
- Warning 9
- Caution 10
- Charging with refrigerant 10
- Important information regarding the refrigerant used 10
- Refilling the refrigerant 10
- English 11
- Precautions for laying refrigerant piping 11
- Refrigerant piping work 11
- Warning 11
- Caution 12
- Connecting the humidifying hose 12
- Forced cooling operation 12
- Pump down operation 12
- Caution 13
- Connecting the humidifying hose 13
- Connecting to indoor unit 13
- Connecting to outdoor unit 14
- English 14
- English 12 14
- Caution 15
- English 15
- Ok ng ok ng 15
- Warning 15
- Wiring 15
- English 14 16
- Items to check 16
- Test run and final check 16
- P234246 1 m08b112 17
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