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ESIE05-03
Functional Diagrams
Part 1 – System Outline
1–29
3
1
4
5
3.7
Re-using Existing Field Piping
Introduction
When installing a system using an RZQ outdoor unit, existing or pre-installed piping can be used
according to below specified conditions.
In all circumstances where these conditions can not be fully met, new piping has to be installed.
How to re-use
existing piping?
Notes:
Oil contamination can be checked using the Daikin “Oil Checker Card”.
Caution:
P
If copper piping is corroded, existing piping re-use is not allowed.
P
Single side thermal insulation is not allowed for re-use.
P
See further notes in this section for Twin, Triple and Double Twin applications.
Check the existing
pipe size.
Check the existing pipe length.
See if the already installed air conditioner can operate and perform a
pump-down operation.
After 30 minutes of cooling operation, proceed with pump-down operation
without interruption.
Check the compressor (of the existing air conditioner) for fault records.
Remove the existing air conditioner.
See if the contamination inside the existing pipe is acceptable.
Rework the flare. (For R410A: See table )
Use the supplied flare nut.
Existing piping work for new air conditioner
Non-standard
size
All satisfactory
Longer than 50 m
Standard size
50 m or less
None
Exist
NO
OK
Both operation and pump-down are possible
Operation not possible
Pump-down operation
not possible
Not listed
Beyond
allowable
length range
No tolerance
for capacity
reduction
Reuse
of
existing
pipe
not
allowed
Check the existing pipe size and thickness
referring to the "(1) SELECTION OF PIPING
MATERIAL" (on the next page).
Check the following item in
"(2) REFRIGERANT PIPE SIZE" and
"(3) ALLOWABLE PIPE LENGTH AND
HEIGHT DIFFERENCE" (on the next page)
See if the length requirements for re-using
the existing piping are as specified.
See if the reduction of cooling capacity
may cause any problem.
on page 1–31.
on page 1–30.
on page 1–33.
ESIE05-03.book Page 29 Wednesday, April 6, 2005 4:09 PM
Summary of Contents for RZQ100B7W1B
Page 1: ...Service Manual ESIE05 03 RZQ71 125B8V3B RZQ100 140B7W1B Sky Air Inverter R 410A B series...
Page 2: ......
Page 10: ...ESIE05 03 viii Table of Contents 3 1 4 5...
Page 24: ...ESIE05 03 1 2 Part 1 System Outline 3 1 1 5...
Page 32: ...General Outline Outdoor Units ESIE05 03 1 10 Part 1 System Outline 3 1 1 4 5...
Page 42: ...Specifications ESIE05 03 1 20 Part 1 System Outline 3 1 1 4 5...
Page 56: ...Functional Diagrams ESIE05 03 1 34 Part 1 System Outline 3 1 1 4 5...
Page 58: ...ESIE05 03 1 36 Part 1 System Outline...
Page 70: ...Wiring Diagrams ESIE05 03 1 48 Part 1 System Outline 3 1 1 4 5...
Page 84: ...PCB Layout ESIE05 03 1 62 Part 1 System Outline 3 1 1 4 5...
Page 86: ...ESIE05 03 2 2 Part 2 Functional Description 3 1 2 5...
Page 110: ...General Functionality ESIE05 03 2 26 Part 2 Functional Description 3 1 2 4 5...
Page 150: ...ESIE05 03 3 2 Part 3 Troubleshooting 3 1 3 5...
Page 188: ...Troubleshooting ESIE05 03 3 40 Part 3 Troubleshooting 3 1 3 4 5...
Page 264: ...Additional Checks for Troubleshooting ESIE05 03 3 116 Part 3 Troubleshooting 3 1 3 4 5...
Page 266: ...ESIE05 03 4 2 Part 4 Commissioning and Test Run 3 1 4 5...
Page 306: ...ESIE05 03 5 2 Part 5 Disassembly and Maintenance 3 1 5...