Bryant 559B - Manual

Bryant
Airconditioning
Company
installation instructions 559B
SELF-CONTAINED
ELECTRIC COOLING UNITS Sizes 024, 030,
036, 042, & 048
Series E
The Model 559B unit is a complete cooling system, with
provisions for addition of accessory electric heaters. Units
are air cooled, designed for outdoor installation, and may
be connected into existing duct system. Required con­
nections include air ducts, condensate drain, and high- and
low-voltage wiring. A field-supplied filter box must be in­
stalled in return air duct.
When optional electric heaters are being installed, see
instructions beginning on page 8 of this publication
for procedures.
TRANSPORTATION DAMAGE
File claim with shipping company if shipment is damaged
or incomplete. Move unit to installation site in upright
position.
Important—Read Before Installing
1. Check all local codes and ordinances that could affect
installation of equipment.
2. Be sure power supply available (voltage, hertz, and
phase) corresponds to that specified on unit rating
plate.
3. Check electrical service provided by utility for building
to be sure service capacity is sufficient to handle load
imposed by unit.
4. Refer to dimensional drawing for locations of elec­
trical, condensate drain, and duct connections before
setting unit in place.
Installation consists of the following steps;
I. Locating and Mounting Unit
II. Connecting Ductwork
III. Connecting Condensate Drain
IV. Electrical Connections
V. Startup and Adjustment
VI. Maintenance
VII. Instructions to Owner
I. LOCATING AND MOUNTING UNIT
Place unit on a solid, level, concrete pad. Pad should be
minimum of 3 inches high, extend about 6 inches from both
sides and front of unit, and must not extend more than 1
inch from back (duct side) of unit. Insert sheet of tar-base
construction felt paper between unit and pad.
Unit does not need to be secured to pad because there are
no refrigerant lines extending outside of unit that could be
damaged.
Be sure grass and shrubs do not interfere with condenser
airstream. If necessary, extend gravel apron around pad.
Place duct side against building structure so ductwork can­
not be seen from outside.
When installing unit, allow sufficient space for condenser
airflow clearance, wiring, and servicing unit. See Figure 2.
Position unit so water from roof will not pour directly on
top of unit. Do not locate unit under eaves.
Recornmended minimum service clearance;
18 inches all sides except duct side
0 inches bottom
36 inches top
Cancels: 39559D47 39559DP61
6/1/74
Figure 1—Model 559B
II. CONNECTING DUCTWORK
Flanges are provided on unit for duct connections. See
Figure 2 for unit connection sizes and locations. Use
weathertight connectors between ductwork and unit to
prevent transmission of vibration.
Ductwork should be selected and sized according to Part 2
of Bryant Air Distribution Manual. All ductwork in un­
conditioned space should be insulated and weatherproof if
used outdoors.
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Filters must be located in return airstream. Recommended
sizes are shown in Table II. When electric heaters are
installed, use an asbestos (or similar heat-resistant ma­
terial) connector between ductwork and unit supply duct
connection.
When flexible duct is used, friction loss in straight runs is
approximately double amount found in Bryant Air
Distribution Manual, Part 2, for air duct design.
It is recommended that rigid elbows should be used for
bends. If rigid elbows are not used, ratio of centerline bend,
radius to duct diameter (R/D) should be at least 1.5 for
minimum friction loss. If rectangular ducts are used over
unit round connections, unit entering pressure loss must be
considered when designing system.
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It is also recommended that abrupt duct expansions and
contractions be avoided.
NOTE: Mobile home duct kits (which include a return air
filter box, filter, floor grille, flexible duct sections, and in­
stallation hardware) are available for mobile home in­
stallation. See your Bryant Distributor.
Mobile Home Duct Design
Design duct system to have friction loss of between 0.25 in.
wc and 0.70 in. wc for proper unit operation. Insulated
flexible ductwork (1-ft inside diameter) of weatherproof
type is recommended. Do not reduce duct inside diameter
below 1 ft. Combined length of supply and return ducts
should not exceed 20 ft, with minimum supply duct length