Carrier 58SSB - Manual

58SSB
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Accessory Variable Speed Blower Kit
Installation Instructions
GENERAL
These instructions cover installation of an ECM blower
accessory on 2- and 3-ton cooling 58SSB 060 and 080
furnaces. ECM blower accessory Part No. 58SSB900131
is used on 2-ton cooling 58SSB060 furnace and Part No.
58SSB900141 is used on3-toncooling58SSB080furnace.
Each ECM blower kit comes completely assembled
with an ECM blower motor and controller, and interface
circuit board. See Table 1 for a list of parts in assembly
shown in Fig. 1.
ECM blower kit is used in conjunction with following
variable speed outdoor units:
38EV024320
38EV036320
38QV024320
38QV036320
This ECM blower is controlled by outdoor unit and
provides variable airflow across furnace coil in response
to variable demand on heat pump or air conditioner. For
emergency heat, interface circuit board allows furnace
control board to operate ECM blower at a fixed rate of
speed. This speed is normally adjusted to midpoint of
rating plate temperature rise range. Interface circuit
board also powers a Parker indoor thermostat. Part No.
HH05ZA001.
Installation of indoor coil expansion valve, and start­
up and adjustment instructions are covered in Installa­
tion, Start-Up and Service Instructions for the 38EV,QV
outdoor units. See detailed system operation and control
in the 38EV,QV system operation and troubleshooting
guide.
A WARNING
Turn off power at main disconnect switch before
starting installation to avoid possibility of electrical
shock.
TABLE OF CONTENTS
Page
INSTALLATION ..................................................................1-4
SEQUENCE OF OPERATION......................................... 5
TEMPERATURE RISE ADJUSTMENT.................... 6
CARE AND MAINTENANCE .......................................... 6,7
INSTALLATION
The following steps should be performed by a qualified
service person:
1. Turn off power at main disconnect.
2. Remove blower door.
3. Remove control box from bottom side of blower
shelf and position out of way.
4. Remove electrical leads from numbered side of
blower speed selector.
5. Remove screws securing blower assembly to blower
shelf and slide blower assembly out of furnace.
6. Unpackage ECM blower assembly and set the
minimum and maximum torque settings on ECM
blower control via access in lower mounting bracket
as shown in Fig. 2.
Table 1 — ECM Blower Kit Parts List
ITEM DESCRIPTION QUANTITY
58SSB900131
PART NO.
58SSB900141
PART NO.
1 Housing-Blower 1 58SSB309891-701 58SSB309891-702
2 Band-Motor Mount 1 HC98ZZ480 HC98ZZ480
3 Arm-Motor Mount 3 HC98ZZ242 HC98ZZ248
4 Wheel-Blower 1 LA22RA101 LA22RA100
5 T ransformer 1 HT01AW232 HT01AW232
6 Motor (ECM) 1 HC42SE113 HC42SE113
7 ECM Motor Controller 1 HR46KH001 HR46KH001
8 Top Blower Control Bracket 1 58SSB308056-201 58SSB308056-201
9 Bottom Blower Control Bracket 1 58SSB308056-202 58SSB308056-202
10 Grommet-Isolator 3 09-0135 09-0135
11 Interface Board 1 HK42FA002 HK42FA002
12 Interface Box 1 58SSB309863-401 58SSB309863-401
13 Interface Box Cover 1 58SSB309864-301 58SSB309864-301
14 Cutoff, Blower 1 79725-2 79725-3
15 Electrical Noise Suppressor 1 HK99FA001 HK99FA001
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Book|1 14 PC101 Catalog No. 535-857 Printed in U.S.A. Form58SSB-5SI Pgl 4-87 Replaces:New
Tab |6a|8a