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
Figure 1—Model 559B
II. CONNECTING DUCTWORK
39559DP61
6/1/74
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.
t'.\l”JT()\; D'l nol opi-rau* unit longer than .“) minutes
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.
\\ \KMN(i l><> iiol •lull hull-- III ,11-1.1 sliiiMM in
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
X = Size 024, 030, & 036................................................................................1-3/4 in.
Size 042 & 048 ............................................................................................2 in.
Figure 4—Required Condenser
Fan Position
-3-
DO NOT DRILL HOLES IN SHADED
AREA WHEN INSTALUNG
RECTANGULAR DUCTS
Figure 5
of 6 ft and minimum return duct length of 3 ft. Do not
operate unit longer than 5 minutes without ductwork.
Refer to Bryant Air Distribution Manual, Part 2, for air
duct design.
Flanges are provided on unit for duct connections. See
Figure 2 for connection sizes and Figure 3 for typical duct
installation.
Supply Air Connection in Mobile Home
Connect flexible duct to unit supply air connection at ap
proximate center of trailer. Install turning vanes in main
supply duct directly above elbow connection, using stan
dard sheet metal practices.
Return Air Connection in Mobile Home
Purchase or field-fabricate a filter box. Suggested minimum
filter box dimensions are shown in Figure 6. At ap
proximate center of trailer, cut a return air opening in floor.
Locate opening where it will not be obstructed by furniture.
Size opening to accept filter box. Cut a hole in carpet or
floor covering to sarne size as filter box floor opening. En
sure electrical wiring or main structural supports are not
accidentally cut. Insert filter box thru floor opening.
Weather-seal floor connection in accordance with good con
struction practice. Insert filter in filter box, and cover with
return air grille.
Connect flexible duct to filter box. Extend duct from filter
box to unit return air connection. When existing furnace is
kept in system: During heating season, insert sheet metal
panel beneath return air grille and over filter to prevent air
movement thru cooling unit.
When furnace is removed from system, blank-off original
furnace floor connection.
III. CONNECTING CONDENSATE DRAIN
The unit is designed to dispose of accumulated water
through condensate drain hose on unit. It is recommended
that a drain line that includes a trap should be installed to
avoid possibility of abnormal negative fan pressure preven
ting complete drainage of condensate. If drain connection is
not practical or feasible, a factory-supplied condensate trap
(taped at supply duct connection) must be installed for
proper drainage. See Figure 7.
IV. ELECTRICAL CONNECTIONS
Field wiring must comply with National Electrical Code
and local codes. Install a branch circuit fused disconnect of
adequate size to handle unit current load. Provide separate
fused disconnect for electric heaters.
Voltage to unit during operation must be within ±10% of
voltage indicated on rating plate.
W.-VRNI.N'Ci: Failure berause of operation of unit on im
proper line voltage constitutes abuse and is not coveretl by
Brvant warr.mtv.
Figure 6 — Minimum Dimensions-Return
Air Filter Box
Connect line-power leads from fused disconnect(s) to line
power leads located in junction box. Screw connectors,
which are suitable for aluminum or copper wires, are
provided. See Figures 8 and 9. Tape screw connectors after
connections are completed. Table I is provided to assist in
staller in selecting proper wire and fuse sizes.
Thermostat connections are made to color-coded wires
located in junction box. See Figures 8 and 9. Be sure colorcoded wires not used are adequately and individually taped
at end.
Rgure 7 —Condensate Drain Connection
NOTE: When using Model 883 (P/N 34427D03O) ther
mostat with optional electric heat package, W and J ter
minals on thermostat must be jumpered to ensure fan
operation when thermostat is in HEAT position.
V. STARTUP AND ADJUSTMENT
Before starting system, make an initial overall inspection.
1. Check to be sure all wiring connections, including fac
tory connections, have been completed and are tight.
2. Inspect all supply ducts and grilles to ensure proper
adjustment.
3. Check to ensure air filters are in place.
4. Inspect refrigerant piping for damage or leaks that
might have occurred during shipment.
5. Check for correct position of condenser fan blade in fan
orifice plate. See Figure 4 for setting.
6. Check to ensure all tools and loose parts have been
removed.
7. Check to ensure all panels and covers are in place.
Following initial inspection, unit may be started and ad-
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