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GENERAL INFORMATION
IMPORTANT:
Read this entire
manual
before
beginning
installation
procedures.
kWARNING:
BOD,LY
,N JURY
CAN RESU'T
FROM
HIGH VOLTAGE ELECTRICAL COMPONENTS, FAST MOVING FANS,
AND COMBUSTIBLE GAS. FOR PROTECTION FROM THESE
INHERENT HAZARDS DURING INSTALLATION AND SERVICING,
THE ELECTRICAL SUPPLY MUST BE DISCONNECTED AND THE
MAIN GAS VALVE MUST BE TURNED OFF. IF OPERATING CHECKS
MUST BE PERFORMED WITH THE UNIT OPERATING, IT IS THE
TECHNICIANS RESPONSIBILTY TO RECOGNIZE THESE HAZARDS
AND PROCEED SAFELY.
Read this manual carefully before attempting
to install, operate,
or perform
maintenance
on this unit. Installation
and mainte-
nance should
be performed
by qualified
service
technicians
only.
As shipped from the factory, this unit is for use with natural gas
only, and is listed by Underwriters
Laboratory.
Model YCY-F
heating/cooling
units are designed
for outdoor
mounting
with a vertical
condenser
discharge.
They can be
located either at ground level or on a roof, in accordance
with
local codes or National Fuel Gas Code (ANSI-Z223.1A)
Latest
Revision. Since these units are designed exclusively
for outdoor
operation,
additional
flue venting
systems
are not required.
Each unit contains
an operating
charge
of Refrigerant-22
as
shipped.
INSPECTION
1. Checkfor damage after the unit is unloaded. Report promptly,
to the carrier, any damage found to the unit. Do not drop the
unit.
iMPORTANT:
The use of "spreader
bars"
is required
when hoisting
the unit (to prevent
damage
to sides and
top).
2. Check the unit's nameplate
to determine
if the unit is correct
for the intended
application.
The power supply
must
be
adequate
for both the unit and all accessories.
3. Check to be sure the refrigerant
charge has been retained
during shipment.
Access to 1/4" flare pressure taps may be
gained by removing the furnace compartment
access panel.
IMPORTANT:
DO NOT CONNECT GAS PIPING TO THE UNIT
UNTIL A LINE PRESSURE TEST HAS BEEN COMPLETED.
DAMAGE TO THE GAS VALVE MAY RESULT IN AN UNSAFE
CONDITION. THIS UNIT SHOULD NEVER BE EXPOSED TO
GAS LINE PRESSURE
IN EXCESS OF 14 INCHES WATER
COLUMN. (1/2 PSIG)
IMPORTANT:
RECONNECT
ALL GROUNDING
DEVICES.
ALL PARTS OF THIS PRODUCT CAPABLE OF CONDUCTING
ELECTRICAL
CURRENT ARE GROUNDED.
IF GROUNDING
WIRES, SCREWS,
STRAPS,
CLIPS NUTS OR WASHERS
USED TO COMPLETE A PATH TO GROUND ARE REMOVED
FOR SERVICE, THEY MUST BE RETURNED TO THEIR ORIGI-
NAL POSITION AND PROPERLY
FASTENED.
IMPORTANT:
ALL POWER LEGS MAY NOT BE BROKEN BY
CONTACTORS.
SEE WIRING DIAGRAM ON UNIT CONTROL
BOX COVER.
THIS UNIT, AS SHIPPED
FROM THE FACTORY,
IS DE-
SIGNED FOR NATURAL GAS ONLY.
BEFORE STARTING THE COMPRESSOR, THE CRANKCASE
HEATER SHOULD BE ENERGIZED FOR EIGHT HOURS
The following
warning
complies
with State of California
law, Proposition
65.
,&WARNING:
Nazardous
Gasses
Exposure
to fuel substances
or by-products
of incomplete
fuel combustion
is believed
by the state of California
to
cause cancer,
birth defects,
or other reproductive
harm.
!
This product
must be gas piped by a Licensed
Plumber
or I
Gas Fitter in the Commonwealth
of Massachusetts.
I
NOTICE
Warnings
and Cautions
appear at appropriate
locations
throughout
this manual.
Read these carefully.
_WARNING:
Indicates a potentially
hazardous
situation which, if not avoided, could
result in death or serious injury.
_CAUTION"
Indicates
a potentially
hazardous
situation which, if not avoided, may
result in minor or moderate
injury. It may also be used to alert against
unsafe practices
and where property-damage-only
accidents
could occur.
Page 2
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