Belt Tension Method; Pre-Start And Start-Up - Bryant Preferred 581J 14 Series Installation Instructions Manual

each other (pulleys aligned). Tighten all bolts securely when
finished.
BELT SMALLEST
CROSS SHEAVE
SECTION DIAMETER
3.0-3.6
A, AX 3.8-4.8
5.0-7.0
3.4-4.2
B, BX 4.4-5.6
5.8-8.6
Table 1
BELT CONDITION
New
Used
Table 2
Fig. 59 — V-Belt Force Label
Copyright 2019 Bryant Heating & Cooling Systems
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
BELT DEFLECTION FORCE (LBS)
UNNOTCHED NOTCHED
BELTS BELTS
USED NEW USED
3.7 5.5 4.1
4.5 6.8 5.0
5.4 8.0 5.7
— — 4.9
5.3 7.9 7.1
6.3 9.4 8.5
TENSION FORCE IN BELT (LBS)
100
80
Cat. No. 04-53581014-01

BELT TENSION METHOD

Requires belt tension gage that measures tension in belt in units
of lbs force.
NEW
MOUNTING
6.1
BOLTS (4)
7.4
8.4
7.2 Fig. 60 — Belt Drive Motor Mounting
10.5

Pre-Start and Start-Up

12.6
This completes the mechanical installation of the unit. Refer to
the unit's Service Manual for detailed Pre-Start and Start-Up
instructions. Download the latest versions from HVAC Part-
ners (www.hvacpartners.com).
Edition Date: 7-19
BLOWER PULLEY
V-BELT
MOTOR
PULLEY
MOTOR MOUNTING
PLATE
Printed in U.S.A Form No: II581J-14-04
Replaces:II581J-14-03
MOTOR