Installation, Jobsite survey – Bryant 551J User Manual

Page 5

INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes and the NEC (National

Electrical Code) ANSI/NFPA 70 for special installa-

tion requirements.

2. Determine unit location (from project plans) or select

unit location.

3. Check for possible overhead obstructions which may

interfere with unit lifting or rigging.

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (curb

or other) that provides for minimum clearances required

for safety (including clearance to combustible surfaces),

unit performance and service access below, around and

above unit as specified in unit drawings. See Fig. 2.

18” (457)

42" (1067)

18" (457)

42" (1067)

Required bottom condensate drain connection.
Otherwise, 36” (914mm) for condensate connection.

C07459

Fig. 2 -- Service Clearance Dimensional Drawing

NOTE: Consider also the effect of adjacent units.
Unit may be installed directly on wood flooring or on

Class A, B, or C roof--covering material when roof curb is

used.

Do not install unit in an indoor location. Do not locate air

inlets near exhaust vents or other sources of contaminated

air.

Although unit is weatherproof, avoid locations that permit

water from higher level runoff and overhangs to fall onto

the unit.

Select a unit mounting system that provides adequate

height to allow installation of condensate trap per

requirements. Refer to Step 9 — Install External

Condensate Trap and Line – for required trap dimensions.

Roof mount —

Check

building

codes

for

weight

distribution

requirements. Unit operating weight is shown in Table 1.

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 —

Install curb
Install field--fabricated ductwork inside curb
Install accessory thru--base service connection package

(affects curb and unit) (refer to accessory installation

instructions for details)
Prepare bottom condensate drain connection to suit

planned condensate line routing (refer to Step 9 for

details)
Rig and place unit
Install outdoor air hood
Install condensate line trap and piping
Make electrical connections
Install other accessories

Table 1 – Operating Weights

551J

UNITS LB (KG)

Component

*04

*05

*06

Base Unit

458 (208)

545 (247)

550 (249)

Economizer

Vertical

50 (23)

Horizontal

80 (36)

Cu Fins

25 (11)

43 (20)

56 (25)

Powered Outlet

32 (15)

Curb

14---in/356 mm

110 (50)

24---in/610 mm

145 (66)

551J