10
DISCONNECT ALL POWER TO
UNIT BEFORE STARTING MAIN-
TENANCE. FAILURE TO DO SO
CAN CAUSE ELECTRICAL SHOCK
RESULT ING IN PERSONAL INJU-
RY OR DEATH. REGULAR MAIN-
TENANCE WILL REDUCE THE
BUILDUP OF CONTAMINANTS
AND HELP TO PROTECT THE
UNIT’S FINISH.
WARNING
II. INSTALLATION
A. GENERAL
1. INSTALLATION — Install this unit in accordance with The American National
Standard Z223.1-latest edition booklet entitled “National Fuel Gas Code,” and the
requirements or codes of the local utility or other authority having jurisdiction.
Additional helpful publications available from the “National Fire Protection
Association” are: NFPA-90A - Installation of Air Conditioning and Ventilating
Systems 1985 or latest edition. NFPA-90B - Warm Air Heating and Air
Conditioning Systems 1984.
These publications are available from:
National Fire Protection
Association, Inc.
1 Batterymarch Park
Quincy, MA 02269-7471
www.nfpa.org
2. PRE-INSTALLATION CHECK-POINTS — Before attempting any installation,
carefully consider the following points:
Structural strength of supporting members
(Rooftop Installation)
Clearances and provision for servicing
Power supply and wiring
Gas supply and piping
Air duct connections and sizing
Drain facilities and connections
Location for minimum noise and
vibration - away from bedroom windows
IMPORTANT: Before operating unit, remove compressor shipping supports
from the compressor base. Failure to remove supports will cause noise and
vibration.
LOCATION CONSIDERATIONS
The metal parts of this unit may be subject to rust or deterioration in adverse envi-
ronmental conditions. This oxidation could shorten the equipment’s useful life. Salt
spray, fog or mist in seacoast areas, sulphur or chlorine from lawn watering systems,
and various chemical contaminants from industries such as paper mills and petro-
leum refineries are especially corrosive.
If the unit is to be installed in an area where contaminants are likely to be a
problem, give special attention to the equipment location and exposure.
1. Avoid having lawn sprinkler heads spray directly on the unit cabinet.
2. In coastal areas locate the unit on the side of the building away from the water-
front.
3. Shielding by a fence or shrubs may give some protection.
4. Frequent washing of the cabinet, fan blade and coil with fresh water will remove
most of the salt or other contaminants that build up on the unit.
5. Regular cleaning and waxing of the cabinet with an automobile polish will provide
some protection.
6. A liquid cleaner may be used several times a year to remove matter that will not
wash off with water.
Several different types of protective coatings are offered in some areas. These coat-
ings may provide some benefit, but the effectiveness of such coating materials can
-
not be verified by the equipment manufacturer.
The best protection is frequent cleaning, maintenance and minimal exposure to
contaminants.
!