Installation
Installation safety information
Read the following instructions before you install
this appliance. This is an outdoor combination
heating and cooling unit. The installer must ensure
that these instructions are made available to the
consumer. The installer must instruct the consumer
to retain the instructions for future reference.
• Refer to the unit rating plate for the approved
type of gas for this product.
• Install this unit only in a location and position
as specified in the Location section.
• Never test for gas leaks with an open flame.
Use commercially available soap solution
made specifically for the detection of leaks
when you check all connections.
• Always install the furnace to operate within
the furnace's intended temperature-rise
range with the duct system and within the
allowable external static pressure range. This
information is specified on the unit name/
rating plate. See Adjustment Of Temperature
Rise.
• This equipment is not to be used for the
temporary heating of buildings or structures
under construction.
• Provide adequate combustion and ventilation
air to the furnace space as specified in the
Clearances section.
WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warning exactly could
result in serious injury, death, or property damage.
Never test for gas leaks with an open flame. Use
a commercially available soap solution made
specifically for the detection of leaks to check all
connections. This may result in a fire or explosion,
causing property damage, personal injury, or loss of
life.
Limitations
These units must be installed in accordance with
national wiring regulations and the following
standards.
Requirements in the U.S.A.
• National Electrical Code, ANSI/NFPA No. 70 -
latest edition
• National Fuel Gas Code, ANSI Z223.1 - latest
edition
• Gas-Fired Central Furnace Standard, ANSI
Z21.47a. - latest edition
• Local building codes
• Local gas utility requirements
Requirements in Canada
• Canadian Electrical Code, CSA C22.1
• Installation Codes, CSA - B149.1
• Local plumbing and waste water codes
• Other applicable local codes
Refer to unit application data found in this
document.
After the installation is complete, you must adjust
gas fired units to obtain a temperature rise within
the range specified on the unit rating plate.
If components are added to a unit to meet local
codes, they are installed at the dealer’s and/or
customer’s expense.
The size of the unit for the proposed installation
must be based on a heat loss/heat gain calculation
made according to the methods of the Air
Conditioning Contractors of America (ACCA).
This furnace is not to be used for temporary heating
of buildings or structures under construction.
Installation Manual: YORK
®
Sun
™
Select YV28 to YV50
9
Johnson Controls Ducted Systems
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