Carrier 58SSB 900131, 900141 Variable Speed Blower Kit Installation Instructions

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Carrier
HEATING 4 COOLING
58SSB
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.
58SSBY900141 is used on 3-ton cooling 58 SSB080 furnace.
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.
(2)
GROUND WIRE
R
TT TERMINATES HERE
=,
= ==.
L La
o 9
Fig. 1 — ECM Blower Kit
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.
HHO05Z A001. | |
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 E
Turn off power at main disconnect switch before
starting installation to avoid possibility of electrical
shock.
TABLE OF CONTENTS
Page
INSTALLATION ..............eo_eercacorcomo 1-4
SEQUENCE OF OPERATION ......... RR 5
TEMPERATURE RISE ADJUSTMENT....... 6
CARE AND MAINTENANCE ............... 6,7
INSTALLATION
The following steps should be performed by a qualified
service person:
l. 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
58558900131 58SSB900141
ITEM DESCRIPTION QUANTITY PART NO. 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 Transformer 1 HTO1AW232 HTO1AW232
6 Motor (ECM) 1 HC42SE113 HC42SE113
7 ECM Motor Controller 1 HR46KH001 HR46KH001
8 Top Blower Contro! 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 HK42F A002
12 Interface Box 1 5855B309863-401 58SSB309863-401
13 Interface Box Cover 1 5855B309864-301 5855B309864-301
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 obligations.
Eon É
Tab |6al8a
PC 101 Catalog No. 535-857
Printedin U.S.A.
Form 58SSB-5SI
Pg1 4-87
Replaces: New
TORQUE SELECT 12.
| 13.
HULL {}e
- y UNION 4
MIN. MAX.
LIMIT LIMIT
“FURNACE MIN MAX
SIZE SETTING SETTING
58SSB060 3 r +
58558080 | 3 10 15
Fig. 2 — Torque Setting 16.
17.
7. Slide ECM blower assembly into furnace and tighten
screws to secure blower assembly to the blower shelf.
8. Reinstall furnace control box on bottom side of
blower shelf. |
9. Connect electrical leads from furnace control pre-
viously used as blower speed selector taps to 18
numbered connector which is panel mounted on the
left side of the interface control box. Black lead to
position 1, red lead to position 2, white lead to posi-
tion C.
10. Double-check to make sure main power disconnect 19
1s off.
In steps 11 through 14, the 115-v power leads to ECM
blower kit connects in parallel with furnace 115-v power
supply. To do this:
11. Remove cover of auxiliary junction box.
| J
—Y
AUXILIARY LOW-VOLTAGE |
JUNCTION BOX TERMINAL BLOCK |
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FIELD- SUPPLIED 3 1 à || |
FUSED DISCONNECT N NT Te Ny Must CAL | 8 8 1
. Î | | || SUPPRESSOR | a 1:
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( 83 | (8) | | |
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= | VAR. SPEED
| CONDENSING
ECM BLOWER KIT TB4 nn — — — — J NIT
INTERFACE BOARD —# THERMOSTAT LINE
(SEE FIG. 4a OR FIG. 4b
—— FIELD LOW-VOLTAGE WIRING FOR CONNECTIONS)
= as es ewe FIELD HIGH-VOLTAGE WIRING —
—— FACTORY LOW-VOLTAGE WIRING К | уе —
Remove strain relief securing the power leads in place
on the auxiliary J-box.
Route power leads from ECM blower kit through
opening in back of auxiliary junction box. Dis-
connect black lead from furnace control at door
switch, and connect black lead with 3/16-in. piggy-
back quick-connect from ECM blower kit in its place.
Then reconnect black lead from furnace control to
3/16-1n. male quick-connect provided on piggyback
connector. Remove wire connecting white lead of
furnace control to line voltage common line. Connect
white wire from ECM blower kit and reinstall wire
nut. |
Make sure all power leads are secured in place using
the strain relief provided with this Kit.
Reinstall cover to auxiliary junction box.
. Disconnect all existing thermostat leads from the
furnace control board if applicable.
Connect W, R, and C from terminal block TB3
labeled, HEAT, on interface circuit board located on
front of blower housing to their respective thermostat
connections on furnace control board, labeled (W,
R, C) using field-supplied thermostat wire cut 6 in.
in length and stripped 1/4 in. on each end. See Fig. 3.
. Install thermostat following instructions included
with outdoor section. For single zone applications,
route 6-conductor thermostat wire into furnace
through one of the knock-outs in the cabinet. Multi-
zone applications require only 3-conductor wire.
. Slide electrical noise suppressor provided, over
thermostat wire before making electrical connections
(see Fig. 3) at blower assembly.
NOTE: For electrical interference and noise, refer to
38EV,QV outdoor section Installation, Start-Up and
Service Instructions.
PARKER INDOOR
THERMOSTAT TERMINALS
L
INTERFACE CABLE
NOTE: If any of the original wire as supplied must be replaced, use same type or equivalent wire.
Fig. 3 — Field High- and Low-Voltage Wiring Diagram
2
PARKER
INTERFACE BOARD INDOOR THERMOSTAT
RO RED — — — — — —Q RED
BUS BO-|-—BLK —————— —OBLK > BUS
GQ @ GRN
TB 4 GO O) GRN
BO--- BLU ————— — --O BLU
ZD/TSR4 WO-|-—- WHT —————— O WHT »ZD/TSR
Y O-|-—- ORN —————— =") МЕС
RO-|-—-GRN -— — — — — —| --@) RED
— — — FIELD-SUPPLIED WIRE
20.
21.
22.
4a — SINGLE ZONE
PARKER
INTERFACE BOARD INDOOR THERMOSTAT
RO-|-- RED —————— —Q) RED
BUS< BO-i-—BLK —————— —G)BLK } BUS
G@|-— GRN — — — — — IO GRN
TB 4 GO © сем
BO @ BLU
ZD/TSR< WO @ WHT »ZD/TSR
YO O YEL
RO O RED
— —— FIELD-SUPPLIED WIRE
4b — MULTI-ZONE
Fig. 4 — Thermostat Connections
Strip thermostat wire leads back 1/8-in. and make
connections to blower kit interface board as shown
in Fig. 4a or 4b. Slide noise suppressor down thermo-
stat wire and position close to interface board.
Route interface cable provided with Model 38EV or
QV outdoor unit to furnace, as described in Model
38EV,QV installation instructions.
To permit routing of interface cable into furnace
blower compartment it is necessary to modify furnace
cabinet according to the following procedure,
referring to Fig. 5.
a. Provided with kit are 2 sheet metal covers, screws
and snap bushing. See Fig. 5. Use one cover as a
template. Mark and drill two 1/8-in. diameter
mounting screw holes in either side of furnace
cabinet.
NOTE: Be sure to locate cable entry hole where
cable does not interfere with interior furnace com-
ponents. Also, before making hole be sure cable
reaches proper receptacle (P1) on blower acces-
sory interface board.
b. Use a chassis punch or similar tool to cuta 1/2-in.
x 1-5/8in. rectangular cable entry opening
between the 2 sheet metal cover mounting screw
holes to permit passage of interface cable
connector.
c. Mount the 2 sheet metal covers loosely to cabinet
with one screw. See Fig. 5.
d. Route interface cable through cable entry hole
into furnace blower compartment to receptacle P1
of blower accessory interface board. Connector is
polarized so it cannot be mounted in wrong direc-
tion. Be sure spring clips on connector lock in
place to secure connector. Secure cable ground
wire to convenient interface board mounting
screw.
e. Mount indoor coil solenoid expansion valve
(SEV) as described in Model 38EV,QV outdoor
section installation instructions. Route 4-lead
wire harness from SEV through interface cable
entry hole to interface board polarized recep-
tacle P2.
f. Open snap bushing provided and install bushing
around interface cable and 4 SEV leads at cable
entry hole with large rim of bushing facing out-
ward from cabinet.
g. Slide 2 sheet metal covers together around bush-
ing and secure covers loosely with remaining
mounting screw. Adjust cable and leads to allow
slack inside cabinet for strain relief.
h. Tighten both sheet metal cover mounting screws
with bushing positioned to protect cable and
leads from metal edges of cable entry hole.
23.
COVER DISASSEMBLED WITH
SNAP BUSHING ATTACHED TO LEADS
COVER FULLY ASSEMBLED
Fig. 5 — Cable Entry Hole and Cover
inside of blower access panel.
24. Reinstall control and blower access panels. See Fig. 3
for a wiring diagram showing proper field high- and
low-voltage wiring. Make all electrical connections
in accordance with National Electrical Code and any
local codes or ordinances that might apply.
25. Clean 2-in. x 3-in. area next to unit rating plate.
26. Peel backing from auxiliary rating plate and stick to
clean area next to unit rating plate.
NOTE: DO NOT apply auxiliary rating plate on top
of the unit rating plate. Make sure both rating plates
are legible after installation.
Peel off backing from wiring diagram and stick on
top of previous furnace wiring diagram located on
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I I { GND
WHT (T1135V) ILK SWITCH, BLOWER DOOR INTERLOCK
YEL (208,230) SPST-N.O. (GAS FURNACE ONLY)
WHT C115V) BLU (208V) RED (230V2
LEGEND
BCR BLOWER CTRL RELAY DPST
D1-4 DIODE BRIDGE
GND GROUND
= MTR1 MOTOR CECM) BLOWER
L2 ONR ON/OFF RELAY DPST
PCB] P.C. BOARD (ECM BLOWER CTRL)
PCB2 P.C. BOARD (INTERFACE?
PLT CONNECTOR (ECM BLOWER CTRL)
INTERNAL FUSE (WHEN USED) — MN 0
N Mu
T1* BRN 24 VAC BRNET2
PL PCB2 INTERFACE BOARD
PL2 CONNECTOR (ECM BLOWER MTR)
PL3 CONNECTOR (FURN./HEATPACK CTRL.?
PL4 CONNECTOR (OUTDOOR SECTION)
|
|
PLS CONNECTOR (EXPANSION VALVE)
RES RESISTOR (ADJ: TEMP. RISE)
TB3 TERMINAL BLOCK (FURNACE CTRL)
TB4 TERMINAL BLOCK (THERMOSTAT)
TRAN TRANSFORMER, 120, 208-230VAC
PRI/24VAC SEC
JA. FIELD SPLICE
— >— PLUS RECEPTACLE
ñ
>
>
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O.
—e— JUNCTION
== TERMINAL PCB FACTORY CONN.
== TERMINAL FIELD CONN.
—— FACTORY WIRING (120V AC)
—— FACTORY WIRING (LOW VOLTAGES
——— FIELD WIRING
—— CONDUCTOR ON PCB2 (INTERFACE)
© SCREW TERMINAL FOR FIELD CONN.
v B.C. GROUND
777 EQUIP. GROUND
— >
L=—
PLT
ı 14
PLS! a BLU _ (5
TRIE | VELAS m
. | — RED TS
NOTES:
. T2 INTERNALLY CONNECTED TO EQUIP-
MENT GROUND.
. REPLACED DAMACE WIRE WITH AWM
—
ORN 2S
VIO 3>
BLK 75
GRN 182;
+ UT E PCBI
— — <<
PIN 6 FOR 115 VAC — 7 IS
BLOWER
CONTROLLER
(105°C) WIRE OR ITS EQUIVALENT.
BLOWER MTR CMTR1) HAS THERMAL
OVERLOAD SWITCH.
SYMBOLS ARE ELECTRICAL REPRESENTA~
TION ONLY.
N WN
SOLID LINES INSIDE PCB2 ARE P.C.
BOARD CONDUCTORS.
309892-301 REV. В
PIN 9 FOR 208,230 VAC
Fig. 7 — ECM Blower Kit Line-to-Line Wiring Diagram
SEQUENCE OF FURNACE OPERATION
Heating Cycle — The control circuit of furnace
shown in schematic wiring diagrams, Fig. 6 and 7, results
in the following sequence of operation for the heating
cycle when used with ECM blower kit:
1.
When blower door is in place, 120 volts is supplied
through blower door interlock 9G. Both transformers
1A and TRAN are energized supplying 24 volts to
heating blower relay coil 2E, interface circuit board
PCB2, and outdoor section. When heating blower
relay coil 2E is energized its normally closed contact
1s opened.
The wall thermostat calls for heat which in turn
transmits necessary signal to CPU 1n outdoor section
which energizes R and W circuit. This closed circuit
supplies power to 24-volt safety circuit containing
limit switch 7H1, fusible link 11C, manual reset draft-
safeguard switch 7H2, manual reset auxiliary switch
7H3 (when used), and energizes ECM blower motor
MTRI1 at a low blower speed.
Simultaneously, the pick coil of gas valve SF, spark
generator 6F, and inducer-motor relay coil 2D are
energized. Inducer-motor relay contacts 2D close
supplying 120 volts to start inducer blower motor 3A.
Also, another set of contacts in inducer-motor relay
2D close in 24-volt circuit, and lock in inducer-motor
relay coil 2D. The coil is locked in until R and W
circuit or safety circuit opens.
When pick coil of gas valve SF 1s energized, gas flows
to pilot. Pilot gas is ignited by a spark produced by
spark generator 6F. Simultaneously, inducer motor
3A comes up to speed, actuating flow sensing switch
7V, energizing hold coil of gas valve SF. Pick coil of
gas valve SF and spark generator 6F are de-energized
~ when contacts of pilot-flame sensing switch 6H move
from normally closed position, breaking circuit to
pick coil and spark generator. In approximately 50 to
‚60 seconds, normally open contacts of pilot-flame
sensing switch 6 H close, making circuit to MGV (main
gas valve) of gas valve SF. Gas valve 5F opens in
approximately 10 seconds, allowing gas flow to main
burners, which are ignited by pilot 6H. Simul-
taneously, time-delay circuit in furnace control board
is energized. Approximately 60 seconds after gas
valve 5F opens, heating relay coil 2E is de-energized,
which closes 120-volt contacts of heating relay 2E,
energizing blower control relay BCR and on/ off relay
ONR on interface circuit board PCB2. This in turn
steps up ECM blower motor MTR to its heating speed.
5. When thermostat 1s satisfied, the appropriate signal
is transmitted to CPU in outdoor section which de-
energizes R and W circuit. This in turn de-energizes
gas valve SF, inducer motor relay 2D, and solid-state
time-delay circuit on furnace control board. Gas flow
stops immediately to pilot and main burners. After
approximately 105 seconds, heating relay 2E is ener-
gized, which opens heating relay contacts 2E supplying
120 volts to interface circuit board PCB2. This causes
blower control relay BCR and on/off relay ONR to
de-energize allowing ECM blower motor MTRI
to stop.
NOTE: After a brief interruption of either electric or gas
supply, furnace will not resume operation until contacts
of pilot-flame sensing switch 6H move from normally
open to normally closed position.
HEATING SPEED
TRIMPOT
TO BLOWER"
Fig. 8 — Variable Speed Blower Interface Board
TEMPERATURE RISE ADJUSTMENT
Furnace must not be operated outside range of tem-
perature rise specified on unit rating plate. Determine
air temperature rise as follows:
1. Place thermometers in return and supply ducts as
near furnace as possible. Be sure thermometers do not
see heating element so that radiant heat does not
affect readings. This practice 1s particularly important
with straight run ducts.
2. When thermometer readings stabilize, subtract return-
air temperature from supply-air temperature to deter-
mine air temperature rise.
NOTE: If outdoor section and system thermostat are
not installed, temperature rise can be determined by
jumpering R and W circuits on furnace control board.
3. Adjust temperature rise to midpoint of temperature
rise range specified on unit rating plate by adjusting
blower speed. To adjust blower speed locate heating
speed trimpot in interface circuit board (see Fig. 8).
Increase blower speed clockwise to reduce tempera-
ture rise. Decrease blower speed counterclockwise to
increase temperature rise.
CARE AND MAINTENANCE
À CAUTION
Because of possible damage to the equipment or
personal injury, maintenance should be performed
by qualified persons only.
A WARNING -
To avoid possibility of electrical shock, be sure to
disconnect electrical power before removing access
panels.
For long life, economy and high efficiency, clean
accumulated dirt and grease from blower wheel and
motor annually.
The following steps should be performed by a qualified
service person:
Some motors have prelubricated sealed bearings and
require no lubrication. These motors can be identified
by the lack of oil ports on each end of the motor. For
those motors with oil ports:
Lubricate motor every 5 years if motor is s used on inter-
mittent operation (thermostat FAN switch in AUTO.
position), or every 2 years if motor is in continuous
operation (thermostat FAN switch in ON position).
Clean and lubricate as follows:
1. Remove access panels.
2. Disconnect R, W, and C thermostat leads on furnace
control board.
3. Remove control box from bottom side of blower
shelf and position out of way.
4. Note location of wires for reassembly. Remove elec-
trical leads from numbered panel mount connector
located on left side of interface box.
5. Disconnect 15-conductor cable on interface circuit
board.
6. Note location of thermostat wires for reassembly.
Remove electrical leads from terminal block TB4 on
interface circuit board.
7. Remove cover of auxiliary junction box. Disconnect
power leads going to interface circuit board.
8. Remove screws securing blower assembly to blower
shelf and slide blower assembly out of furnace.
9. Squeeze release tabs on connector PL2 and pull from
ECM blower controller.
10. Mark blower wheel location on shaft and motor
support location on motor before disassembly to
ensure proper reassembly.
11. Loosen setscrew holding blower wheel on motor
shaft.
12. Remove bolts holding motor mount to blower hous-
ing. Slide motor and mount out of housing.
13. Lubricate motor.
a. Remove dust caps or plugs from oil ports located
at each end of motor. If motor does not have these
caps or plugs, bearings are sealed and need no
further lubrication.
b. Use a good grade of SAE 20 nondetergent motor
oil. Put one teaspoon (5 ce, 3/16 oz or 16 to 25
drops) in each oil port. Use of other types or
grades of oil will damage motor. Excessive oiling
can cause premature bearing failures.
c. Allow time for total quantity of oil to be absorbed
by each bearing.
d. After oiling motor, wipe excess oil from motor
housing.
e. Replace dust caps or plugs on oil ports.
14. Remove blower wheel from housing.
a. Mark blower wheel orientation and cutoff plate
location to ensure proper reassembly. |
b. Remove screws securing cutoff plate and remove
cutoff plate from housing.
c. Remove blower wheel from housing.
15. Clean blower wheel and motor by using a vacuum
with soft brush attachment. Be careful not to disturb
balance weights (clips) on blower wheel vanes. Do
not drop or bend wheel because balance will be
affected.
16. Reassemble blower by reversing steps 14a through c.
Be sure wheel is positioned for proper rotation and
motor oiling plugs are pointed up when motor 1s
installed.
17.
18.
19.
20.
21.
22.
23.
24.
Reassemble motor and blower by reversing steps 9
through 12. If motor has ground wire, be sure it is
reconnected. Be sure wheel 1s centered in blower
housing. Spin blower wheel to check clearance.
Reinstall blower assembly in furnace.
Reconnect power leads from interface circuit board.
Reinstall auxiliary junction box cover.
Reconnect thermostat leads to terminal block TB4
on interface circuit board.
Reconnect 15-conductor cables.
Reconnect electrical leads from furnace control to
numbered panel mount connector located on left
side of interface box.
Reinstall control box on bottom side of blower shelf.
Refer to 38EV,QV outdoor section installation in-
structions and inspect for proper blower operation.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Booki1 |4 PC 101 Catalog No. 535-857 Printed in U.S.A. Form 58SSB-5SI Pg8 4-87 Replaces: New
Tab |6al8a |
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