York D2NA060 User Manual

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Not suitable for use with conventional venting systems.
LIMITATIONS
These units must be installed in accordance with the following
national and local safety codes.
1. National Electrical Code ANSI/NFPS No. 70 or Canadian
Electrical Code Part 1, C22.1 (latest editions).
2. National Fuel Gas Code Z223.1 or CAN/CGA B149.1 or .2
Installation Code.
3. Local gas utility requirements.
4. Local plumbing and waste water codes and other applica-
ble local codes.
Refer to Table 1 for unit application data and to Table 2 for gas
heat application data.
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 calculations made in accordance with industry
recognized procedures identified by the Air Conditioning Con-
tractors of America.
LOCATION
Use the following guidelines to select a suitable location for
these units.
1. Unit is designed for outdoor installation only.
2. Condenser must have an unlimited supply of air. Where a
choice of location is possible, position unit on either north or
east side of building.
WARNING: Excessive exposure of this furnace to contami-
nated combustion air may result equipment dam-
age or personal injury. Typical contaminates
include: permanent wave solutions, chlorinated
waxes and cleaners, chlorine based swimming
pool chemicals, water softening chemicals, carbon
tetrachloride, Halogen type refrigerants, cleaning
solvents (e.g. perchloroethylene), printing inks,
paint removers, varnishes, hydrochloric acid, ce-
ments and glues, antistatic fabric softeners for
clothes dryers, masonry acid washing materials.
3. For ground level installation, a level pad or slab should be
used. The thickness and size of the pad or slab used should
meet local codes and unit weight. Do not tie the slab to the
building foundation.
4. For roof top installation, be sure the structure will support
the weight of the unit plus any field installed components.
Unit must be installed on a level roof curb or appropriate an-
gle iron frame providing adequate support under the
compressor/condenser section.
5. Maintain level tolerance of unit to 1/8" maximum.
RIGGING OR HANDLING
Care must be exercised when moving the unit. Do not remove
any packaging until the unit is near the place of installation. Rig
unit with slings placed under the unit. Spreader bars of suffi-
cient length should be used across the top of the unit.
BEFORE LIFTING A UNIT, MAKE SURE THAT ITS WEIGHT
IS DISTRIBUTED EQUALLY ON THE CABLES SO THAT IT
WILL LIFT EVENLY.
Units may also be moved or lifted with a fork-lift. Slotted open-
ings in the skid are provided for this purpose. Forks must pass
completely through the base.
Refer to Table 7 for unit weights and to Figure 4 for approximate
center of gravity.
CLEARANCES
All units require certain clearances for proper operation and
service. Refer to Figure 5 for the clearances required for com-
bustion, construction, servicing and proper unit operation.
WARNING: Do not permit overhanging structures or shrubs to
obstruct the condenser air discharge, combustion
air inlet or vent outlet.
DUCT WORK
These units are adaptable to downflow use as well as rear sup-
ply and return air duct openings. To convert to downflow, use
the following steps:
1. Remove the duct covers found in the bottom return and
supply air duct openings. There are four (4) screws secur-
ing each duct cover (save these screws to use later).
2. Install the duct covers, removed in step one, to the rear
supply and return air duct openings. Secure with the four
(4) screws used in step one.
3. Seal the duct covers with silicone caulk.
Duct work should be designed and sized according to the
methods of the Air Conditioning Contractors of America
(ACCA), as set forth in their Manual D.
A closed return duct system shall be used. This shall not pre-
clude use of economizers or ventilation air intake. Flexible
joints may be used in the supply and return duct work to mini-
mize the transmission of noise.
CAUTION: When fastening duct work to the side duct flanges on
the unit, insert the screws through the duct flanges only.
DO NOT insert the screws through the casing. Outdoor
duct work must be insulated and waterproofed.
NOTE: Be sure to note supply and return openings.
035-18265-001-A-0202
Unitary Products Group
3
INSTALLATION
Voltage Variation
Min. / Max
.1
208/230V
3
187 / 253
3
460V
414 / 504
575V
518 / 630
Wet Bulb Temperature (
°
F) of Air on
Evaporator Coil,        Min. / Max.
57 / 72
Dry Bulb Temperature (
°
F) of Air on
Condenser Coil,     Min.
2
/ Max.
45 / 120
1 Rated in accordance with ARI Standard 110, utilization"A".
2
A low ambient accessory is available for operation down to 0
°
F
3
“T1" transformer primary tap must be moved from the 230 volt connection to the 208 volt
connection for low voltage applications of 208 volt and below.
TABLE 1 - UNIT APPLICATION DATA