Step 2 - Plan For Sequence Of Unit Installation; Step 3 - Inspect Unit; Step 4 - Provide Unit Support - Bryant 581J-04A Installation Instructions Manual

requirements. Refer to Step 12 — Install External Condensate
Trap and Line on page 14 for required trap dimensions.
ROOF MOUNT — Check building codes for weight distri-
bution requirements. Unit operating weights are shown in
Table 2.
Table 2 — Operating Weights
581J--
Base Unit
Economizer
Vertical
Horizontal
Perfect Humidity ™ System
Cu Fins
Powered Outlet
Curb
14 in. (356 mm)
24 in. (610 mm)
Step 2 — Plan for Sequence of Unit Installation —
The support method used for this unit will dictate different
sequences for the steps of unit installation. For example, on
curb-mounted units, some accessories must be installed on the
unit before the unit is placed on the curb. Review the following
for recommended sequences for installation steps:
CURB-MOUNTED INSTALLATION
1. Install curb
2. Install field-fabricated ductwork inside curb
3. Install accessory thru-base service connection package
(affects curb and unit) (refer to accessory installation
instructions for details)
4. Prepare bottom condensate drain connection to suit
planned condensate line routing (refer to Step 12 —
Install External Condensate Trap and Line on page 14 for
details)
5. Rig and place unit
6. Install outdoor air hood
7. Install flue hood
8. Install gas piping
9. Install condensate line trap and piping
10. Make electrical connections
11. Install other accessories
UNIT LB (KG)
04 05 06
505 (229) 590 (268) 600 (272)
50 (23) 50 (23) 50 (23)
80 (36) 80 (36) 80 (36)
27 (10) 34 (13) 34 (13)
25 (11) 43 (20) 56 (25)
32 (15) 32 (15) 32 (15)
110 (50) 110 (50) 110 (50)
145 (66) 145 (66) 145 (66)
PAD-MOUNTED INSTALLATION
1. Prepare pad and unit supports
2. Check and tighten the bottom condensate drain connec-
tion plug
3. Rig and place unit
4. Convert unit to side duct connection arrangement
5. Install field-fabricated ductwork at unit duct openings
6. Install outdoor air hood
7. Install flue hood
8. Install gas piping
9. Install condensate line trap and piping
10. Make electrical connections
11. Install other accessories
FRAME-MOUNTED INSTALLATION — Frame-mount-
ed applications generally follow the sequence for a curb in-
stallation. Adapt the sequence as required to suit specific in-
stallation plan.
Step 3 — Inspect Unit —
damage. File any claim with transportation agency.
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.
On units with hinged panel option, check to be sure all
latches are snug and in closed position.
Locate the carton containing the outside air hood parts. Do
not remove carton until unit has been rigged and located in fi-
nal position.
Step 4 — Provide Unit Support
ROOF CURB MOUNT — Accessory roof curb details and
dimensions are shown in Fig. 4. Assemble and install acces-
sory roof curb in accordance with instructions shipped with
the curb.
NOTE: The gasketing of the unit to the roof curb is critical for a
watertight seal. Install gasket supplied with the roof curb as
shown in Fig. 4. Improperly applied gasket can also result in air
leaks and poor unit performance.
Curb should be level. This is necessary for unit drain to
function properly. Unit leveling tolerances are shown in
Fig. 5. Refer to Accessory Roof Curb Installation Instructions
for additional information as required.
7
Inspect unit for transportation