Bryant 549B User Manual

Page 3

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III. STEP 3 — INSTALL CONDENSATE DRAIN LINE AND
EXTERNAL TRAP
Condensate drain connections are located on the bottom and
end of the unit. Unit discharge connections do not determine
the use of drain connections; either drain connection can be
used with vertical or horizontal applications.

When using the standard end drain connection, make sure
the red plug in the alternate bottom connection is tight
before installing the unit.

To use the bottom drain connection for a roof curb installa-
tion, relocate the factory-installed red plug from the bottom
connection to the end connection. The center drain plug looks
like a star connection, but can be removed with a

-in.

socket drive extension. See Fig. 3A. The piping for the con-
densate drain and external trap can be completed after the
unit is in place.

All units must have an external trap for condensate drain-
age. Install a trap at least 4-in. deep and protect against
freeze-up. If a drain line is installed downstream from the
external trap, pitch the line away from the unit at 1 in. per
10 ft of run. Do not use a pipe size smaller than the unit
connection (

-in.). See Fig. 3B.

IV. STEP 4 — RIG AND PLACE UNIT
Inspect the unit for transportation damage. File any claim
with the transportation agency. Keep the unit upright and do
not drop it. Spreader bars are not required if top crating is

left on the unit. Rollers may be used to move the unit across
a roof. Level by using the unit frame as a reference. See
Table 1 and Fig. 4 for additional information. Operating
weight is shown in Table 1 and Fig. 4.

Lifting holes are provided in the base rails as shown in Fig. 4
and 5. Refer to rigging instructions on the unit.

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B

B-C

A-C

0.5

1.0

Fig. 2 — Unit Leveling Tolerances

DRAIN PLUG

HORIZONTAL
DRAIN OUTLET

NOTE: Drain plug is shown in factory-installed position.

Fig. 3A — Condensate Drain Connection (Side View)

NOTE: Trap should be deep enough to offset maximum unit static dif-
ference. A 4-in. trap is recommended.

Fig. 3B — Condensate Drain Piping Details

NOTES:

1. Dimension in ( ) is in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in detail ‘‘A.’’

Holes in base rails are centered around the unit center of gravity. Use
wooden top skid when rigging to prevent rigging straps from damaging unit.

3. Unit weights do not include economizer. See Table 1 for unit weight of

economizer.

4. Unit weights do not include skid.

CAUTION:

All panels must be in place when rigging.

UNIT
549B

UNIT

OPERATING

WEIGHT

DIMENSIONS

‘‘A’’

‘‘B’’

‘‘C’’

in.

090

870

395

77.42

1966.5

41.5

1054

42.12

1070

102,120

1000

454