Installation; Installation Safety Information; Limitations - York 20 Series Installation Manual

349215-JIM-B-1008

INSTALLATION

INSTALLATION SAFETY INFORMATION:

Read these instructions before continuing this appli-
ance installation. This is an outdoor combination heat-
ing and cooling unit. The installer must assure that
these instructions are made available to the consumer
and with instructions to retain them for future reference.
1. Refer to the furnace rating plate for the approved
type of gas for this furnace.
2. Install this furnace only in a location and position
as specified on Page 8 of these instructions.
3. Never test for gas leaks with an open flame. Use
commercially available soap solution made specifi-
cally for the detection of leaks when checking all
connections, as specified on Pages 7, 15, 16 and
54 of these instructions.
4. Always install furnace to operate within the fur-
nace's intended temperature-rise range with the
duct system and within the allowable external static
pressure range, as specified on the unit name/rat-
ing plate, specified on Page 56 of these instruc-
tions.
5. This equipment is not to be used for temporary
heating of buildings or structures under construc-
tion.
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. A
Fire or explosion may result causing property
damage, personal injury or loss of life.
Use a commercially available soap solution
made specifically for the detection of leaks.

LIMITATIONS

These units must be installed in accordance with the
following national and local safety codes:
Johnson Controls Unitary Products
In U.S.A.:
• National Electrical Code ANSI/NFPA No. 70.
• National Fuel Gas Code Z223.1.
• Gas-Fired Central Furnace Standard ANSI
Z21.47a.
• Local gas utility requirements.
In Canada:
• Current Canadian Electrical Code C22.1.
• Current Gas Installation Codes CSA-B149.1.
• Local plumbing and waste water codes.
• Other applicable local codes.
Refer to the Unit Application Data table and to the Gas
Heat Application Data table.
After installation, the unit must be adjusted to obtain a
temperature rise within the range specified on the unit
rating plate.
If components are to be added to a unit to meet local
codes, they are to be installed at the dealer's and/or
the customer's expense.
Size of unit for proposed installation should be based
on 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.
The control board used in this product will
effectively operate the cooling system down to
0°F when this product is applied in a comfort
cooling application for people. An economizer is
typically included in this type of application.
When applying this product for process cooling
applications (computer rooms, switchgear, etc.),
please reference applications bulletin AE-011-
07 or call the applications department for Unitary
Products @ 1-877-UPG-SERV for guidance.
Additional accessories may be needed for stable
operation at temperatures below 30°F.
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