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6 Installation

Installer reference guide

14

RZASG71~Y1

Sky Air Advance-series

4P486047-1 – 2017.04

Piping size

(mm)

Tightening

torque (N•m)

Flare

dimensions (A)

(mm)

Flare shape

(mm)

Ø9.5

33~39

12.8~13.2

R=0.4~0.8

45° ±2

90°±2

A

Ø15.9

63~75

19.3~19.7

6.4.4

Pipe bending guidelines

Use  a  pipe  bender  for  bending.  All  pipe  bends  should  be  as  gentle
as possible (bending radius should be 30~40 mm or larger).

6.4.5

To flare the pipe end

CAUTION

▪ Incomplete flaring may cause refrigerant gas leakage.

▪ Do  NOT  re-use  flares.  Use  new  flares  to  prevent

refrigerant gas leakage.

▪ Use  flare  nuts  that  are  included  with  the  unit.  Using

different flare nuts may cause refrigerant gas leakage.

1

Cut the pipe end with a pipe cutter.

2

Remove  burrs  with  the  cut  surface  facing  down  so  that  the
chips do not enter the pipe.

a

b

a

Cut exactly at right angles.

b

Remove burrs.

3

Remove  the  flare  nut  from  the  stop  valve  and  put  the  flare  nut
on the pipe.

4

Flare  the  pipe.  Set  exactly  at  the  position  as  shown  in  the
following illustration.

A

Flare tool for R32

(clutch type)

Conventional flare tool

Clutch type

(Ridgid-type)

Wing nut type

(Imperial-type)

A

0~0.5 mm

1.0~1.5 mm

1.5~2.0 mm

5

Check that the flaring is properly made.

a

b

c

a

Flare’s inner surface must be flawless.

b

The pipe end must be evenly flared in a perfect circle.

c

Make sure the flare nut is fitted.

6.4.6

To braze the pipe end

The  indoor  unit  and  outdoor  unit  have  flare  connections.  Connect
both  ends  without  brazing.  If  brazing  should  be  needed,  take  the
following into account:

▪ When  brazing,  blow  through  with  nitrogen  to  prevent  creation  of

large  quantities  of  oxidised  film  on  the  inside  of  the  piping.  This
film adversely affects valves and compressors in the refrigerating
system and prevents proper operation.

▪ Set  the  nitrogen  pressure  to  20  kPa  (0.2  bar)  (just  enough  so  it

can be felt on the skin) with a pressure-reducing valve.

a

b

c

d

e

f

f

a

Refrigerant piping

b

Part to be brazed

c

Taping

d

Manual valve

e

Pressure-reducing valve

f

Nitrogen

▪ Do NOT use anti-oxidants when brazing pipe joints.

Residue can clog pipes and break equipment.

▪ Do  NOT  use  flux  when  brazing  copper-to-copper  refrigerant

piping.  Use  phosphor  copper  brazing  filler  alloy  (BCuP),  which
does not require flux.
Flux  has  an  extremely  harmful  influence  on  refrigerant  piping
systems. For instance, if chlorine based flux is used, it will cause
pipe  corrosion  or,  in  particular,  if  the  flux  contains  fluorine,  it  will
deteriorate the refrigerant oil.

6.4.7

Using the stop valve and service port

To handle the stop valve

Take the following guidelines into account:

▪ The stop valves are factory closed.

▪ The following illustration shows each part required in handling the

valve.

c
d

a

b

a

Service port and service port cap

b

Valve stem

c

Field piping connection

d

Stem cap

▪ Keep both stop valves open during operation.

▪ Do  NOT  apply  excessive  force  to  the  valve  stem.  Doing  so  may

break the valve body.

▪ Always  make  sure  to  secure  the  stop  valve  with  a  spanner,  then

loosen or tighten the flare nut with a torque wrench. Do NOT place
the  spanner  on  the  stem  cap,  as  this  could  cause  a  refrigerant
leak.

a

b

a

Spanner

b

Torque wrench

▪ When  it  is  expected  that  the  operating  pressure  will  be  low  (e.g.

when  cooling  will  be  performed  while  the  outside  air  temperature
is  low),  sufficiently  seal  the  flare  nut  in  the  stop  valve  on  the  gas
line with silicon sealant to prevent freezing.

Silicon sealant, make sure there is no gap.

Summary of Contents for RZASG100M7V1B

Page 1: ...nstaller reference guide Sky Air Advance series English Installer reference guide Sky Air Advance series RZASG71M2V1B RZASG100M7V1B RZASG125M7V1B RZASG140M7V1B RZASG100M7Y1B RZASG125M7Y1B RZASG140M7Y1...

Page 2: ...recautions when checking the refrigerant piping 16 6 5 3 Checking refrigerant piping Setup 16 6 5 4 To check for leaks 16 6 5 5 To perform vacuum drying 17 6 6 Charging refrigerant 17 6 6 1 About char...

Page 3: ...OT touch the refrigerant piping water piping or internal parts during and immediately after operation It could be too hot or too cold Give it time to return to normal temperature If you must touch it...

Page 4: ...ake sure there is no oxygen in the system Refrigerant may only be charged after performing the leak test and the vacuum drying In case re charge is required refer to the nameplate of the unit It state...

Page 5: ...earth leakage protector make sure it is compatible with the inverter resistant to high frequency electric noise to avoid unnecessary opening of the earth leakage protector NOTICE Precautions when layi...

Page 6: ...do and know to install the system Commissioning What to do and know to commission the system after it is installed Hand over to the user What to give and explain to the user Maintenance and service Ho...

Page 7: ...n manual of the refrigerant branch kit Demand adaptor kit SB KRP58M52 Includes the additional mounting plate EKMKSA2 Can be used for the following Low noise To lower the operation sound of the outdoor...

Page 8: ...ght be higher than the sound pressure level mentioned in Sound spectrum in the data book due to environmental noise and sound reflections INFORMATION The sound pressure level is less than 70 dBA In pl...

Page 9: ...rresponds with the actual highest unit L1 Main piping L2 L7 Branch piping H1 Height difference between the highest indoor unit and the outdoor unit H2 Height difference between the highest and the low...

Page 10: ...win L2 L3 Limit L4 L5 Limit L6 L7 Limit L2 L4 L3 L7 Limit 10 m 6 Maximum height between indoor and outdoor Pair twin triple and double twin H1 Limit 30 m 7 Maximum height between indoors Pair N A Twin...

Page 11: ...ing Charging refrigerant Connecting the electrical wiring Finishing the outdoor installation Finishing the indoor installation INFORMATION For installation of the indoor unit mounting the indoor unit...

Page 12: ...e unit in order to prevent the invasion of water in the unit and to avoid the drain water dripping see the following illustration INFORMATION If necessary you can use a drain plug kit field supply to...

Page 13: ...thing but the designated refrigerant to get mixed into the refrigerant cycle e g air Only use R32 when adding refrigerant Only use installation tools e g manifold gauge set that are exclusively used f...

Page 14: ...d film on the inside of the piping This film adversely affects valves and compressors in the refrigerating system and prevents proper operation Set the nitrogen pressure to 20 kPa 0 2 bar just enough...

Page 15: ...oor unit Piping length Keep field piping as short as possible Piping protection Protect the field piping against physical damage 1 Do the following Remove the service cover a with screw b Remove the p...

Page 16: ...ists of the following stages 1 Checking for leaks in the refrigerant piping 2 Performing vacuum drying to remove all moisture air or nitrogen from the refrigerant piping If there is a possibility of m...

Page 17: ...it is factory charged with refrigerant but in some cases the following might be necessary What When Charging additional refrigerant When the total liquid piping length is more than specified see later...

Page 18: ...ak If the refrigerant leaks in the room and comes in contact with fire from a burner a heater or a cooker this may result in fire or the formation of a harmful gas Turn off any combustible heating dev...

Page 19: ...ins fluorinated greenhouse gases Its global warming potential GWP value is 675 Do NOT vent these gases into the atmosphere When charging refrigerant always use protective gloves and safety glasses CAU...

Page 20: ...frigerant charge in the system expressed as tonnes CO2 equivalent is used to determine the maintenance intervals Follow the applicable legislation Formula to calculate the greenhouse gas emissions GWP...

Page 21: ...ble legislation Interconnection cables Minimum cable section of 2 5 mm and applicable for 230 V Recommended field fuse 20 A 25 A 32 A 16 A 20 A Earth leakage circuit breaker Must comply with applicabl...

Page 22: ...e frame When cables are routed from the unit a protection sleeve for the conduits PG insertions can be inserted at the knockout hole When you do not use a wire conduit protect the wires with vinyl tub...

Page 23: ...eat up the compressor oil to avoid oil shortage and compressor breakdown during startup NOTICE NEVER operate the unit without thermistors and or pressure sensors switches Burning of the compressor mig...

Page 24: ...vice cover to prevent electric shocks 3 Turn ON power for at least 6 hours before starting operation to protect the compressor 4 On the user interface set the unit to cooling operation mode 2 Start th...

Page 25: ...the unit 9 Maintenance and service NOTICE Maintenance must be done by an authorised installer or service agent We recommend to do maintenance at least once a year However applicable legislation might...

Page 26: ...y for reuse recycling and recovery 11 1 Overview Disposal Typical workflow Disposing of the system typically consists of the following stages 1 Pumping down the system 2 Bringing the system to a speci...

Page 27: ...row of units A E a b c d e eB eD a b c d e eB eD A B C D E B HU HD H B 100 A B C 250 100 100 B E 100 1000 500 A B C E 250 150 150 1000 500 D 500 D E 500 1000 500 B D 100 500 B D E 1 2 1 HB HD HB HU 25...

Page 28: ...e upper unit high enough above the lower unit to prevent ice buildup at the upper unit s bottom plate B1 B2 B1 If there is no danger of drainage dripping and freezing between the upper and lower units...

Page 29: ...ctive devices S1PH S1PLand Q1E 3 Refer to the combination table and the option manual for how to connect the wiring to X6A X28A and X77A 4 Colours BLK black RED red BLU blue WHT white GRN green 4 Lege...

Page 30: ...licable for a certain product or domain Service company Qualified company which can perform or coordinate the required service to the product Installation manual Instruction manual specified for a cer...

Page 31: ......

Page 32: ...4P486047 1 2017 04 Copyright 2017 Daikin...

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