Installation Manual User guide

Form I-Y, P/N 273646R6, Page 1
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Installation / Operation
Applies to: Models YDHA, YDMA, and YDSA
Packaged Rooftop Equipment
!
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could result in serious injury, death, or
property damage.
Be sure to read and understand the installation, operation, and service instructions in
this manual.
Improper installation, adjustment, alteration, service, or maintenance can cause
serious injury, death, or property damage.
— Do not store or use gasoline or other ammable vapors and liquids in the vicinity
of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Leave the building immediately.
• Immediately call your gas supplier from a phone remote from the building. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the re department.
— Installation and service must be performed by a qualied installer, service agency,
or the gas supplier.
R-410A
Refrigerant
A
G
E
N
C
Y
P
R
O
C
E
S
S
S
T
A
R
T
-
U
P
P
R
O
D
U
C
T
C
U
S
T
O
M
E
R
W
A
R
R
A
N
T
Y
C
O
N
V
E
R
G
E
N
T
Q
U
A
L
I
T
Y
S
Y
S
T
E
M
CQS
CQS
DANGER:
This unit contains R-410A high pressure refrigerant. Hazards exist that could result in
personal injury or death. Installation, maintenance, and service should only be performed by
an HVAC technician qualied in R-410A refrigerant and using proper tools and equipment.
Due to much higher pressure of R-410A refrigerant, DO NOT USE service equipment or
tools designed for R22 refrigerant.
Form I-Y (Version .5)
Obsoletes I-Y (Version .4)