Attention Installing Personnel - Daikin RR20AVAK9 Installation & Service Reference

ATTENTION INSTALLING PERSONNEL

As a professional installer you have an obligation to know the product better than the customer. This includes all safety precau-
tions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety warnings.
Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit is in
operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer in its
safe use.
Safety is a matter of common sense...a matter of thinking before acting. Most dealers have a list of specific good safety
practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is a direct
conflict between existing practices and the content of this manual, the precautions listed here take precedence.
HIGH VOLTAGE!
Disconnect ALL power before servicing. Multiple
power sources may be present. Failure to do so may
cause property damage, personal injury or death.
INDEX - LONG LINE SET SECTIONS
SECTION 1. General Requirements for All Long Line Set Applications ............................... 27
SECTION 2. Outdoor Unit and Indoor Unit are at the Same Elevation ................................. 29
SECTION 3. Outdoor Unit is Above the Indoor Unit ............................................................. 30
SECTION 4. Outdoor Unit is Below the Indoor Unit ............................................................. 31
SECTION 5. Calculations - Tubing Equivalent Length, Tube Size and Refrigerant .............. 32
This long line set application guideline applies to all AHRI listed R-410A air conditioner and heat pump split system matches of
nominal capacity 18,000 to 60,000 Btuh. This guideline will cover installation requirements and additional accessories needed for
split system installations where the line set exceeds 80 feet (24.4 m) in actual length. The long line sets can have three different
configurations (1) Outdoor unit and Indoor unit are at the same level, (2) Outdoor unit is above the Indoor unit coil, (3) Outdoor
unit is below the Indoor unit.
This guideline is meant to provide installation instructions based on most common long line set applications. Installation
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
variables may affect the system operation.
Contact Technical Services
for variations or applications outside those outlined in this document.
Before connecting tubing, read the outdoor unit installation manual.
Pay particular attention to all safety precautions.
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