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Daikin DBG Series User Manual

Daikin DBG Series
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Copyright ©2020
RSD6412023
June 2020
DBG Gas Electric/DBC Cooling
Commercial Package Units
with R-410A Refrigerant
15 - 25 Tons & Accessories
Service Instructions
NOTE: 15 & 20 ton model shown in pictures.
25 ton model has 2 fans.
O
NLY
PERSONNEL
THAT
HAVE
BEEN
TRAINED
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
(
HEREINAFTER
, “
SERVICE
”)
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
SHOULD
SERVICE
THE
EQUIPMENT
. T
HE
MANUFACTURER
WILL
NOT
BE
RESPONSIBLE
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
ARISING
FROM
IMPROPER
SERVICE
OR
SERVICE
PROCEDURES
. I
F
YOU
SERVICE
THIS
UNIT
,
YOU
ASSUME
RESPONSIBILITY
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
WHICH
MAY
RESULT
. I
N
ADDITION
,
IN
JURISDICTIONS
THAT
REQUIRE
ONE
OR
MORE
LICENSES
TO
SERVICE
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
ONLY
LICENSED
PERSONNEL
SHOULD
SERVICE
THE
EQUIPMENT
. I
MPROPER
INSTALLATION
,
ADJUSTMENT
,
SERVICING
OR
REPAIR
OF
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
OR
ATTEMPTING
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
WITHOUT
PROPER
TRAINING
MAY
RESULT
IN
PRODUCT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
WARNING
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A

Table of Contents

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Daikin DBG Series Specifications

General IconGeneral
BrandDaikin
ModelDBG Series
CategoryAir Conditioner
LanguageEnglish

Summary

SAFE REFRIGERANT HANDLING

PRODUCT DESIGN

ELECTRICAL WIRING

Guidelines and warnings for electrical connections, power supply, and grounding requirements.

SYSTEM OPERATION

STARTUP, ADJUSTMENTS, AND CHECKS

Procedures for initial unit startup, system checks, and contractor responsibilities.

SERVICING

GAS HEATING ANALYSIS CHART

Chart to diagnose common gas heating issues by correlating symptoms with possible causes and test methods.

S-1 CHECKING VOLTAGE

Procedure for checking incoming voltage, phase imbalance, and locked rotor voltage for proper unit operation.

S-100 REFRIGERATION REPAIR PRACTICE

General practices for repairing refrigeration systems, including safety, brazing, and system evacuation.

S-102 EVACUATION

Detailed procedure for evacuating the system to remove air and moisture, crucial for efficiency and longevity.

S-103 CHARGING

Steps for charging the system with the correct amount of refrigerant, including final adjustments and superheat/subcooling checks.

S-115 COMPRESSOR BURNOUT

Procedure for diagnosing compressor burnout by analyzing oil samples and checking for acid.

S-304 TESTING GAS VALVE

Testing the gas valve for proper operation and 24VAC supply, ensuring correct gas flow and safety shut-off.

UNIT WIRING DIAGRAMS

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