MBVC
BLOWER CABINET
INSTALLATION INSTRUCTIONS
C
ONTENTS
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
INTRODUCTION .............................................................................. 1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ..................................... 1
C
HECKING PRODUCT RECEIVED ........................................................... 2
R
EPLACEMENT PARTS ...................................................................... 2
ORDERING PARTS .......................................................................... 2
I
MPORTANT SAFETY INSTRUCTIONS ....................................................... 2
R
ECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS ................................. 2
GENERAL INFORMATION ................................................................... 3
F
EATURES .................................................................................... 3
A
CHIEVING LESS AIR LEAKAGE: .......................................................... 3
CLEARANCES AND ACCESSIBILITY ......................................................... 3
I
NSULATION ................................................................................. 3
I
NSTALLATION INSTRUCTIONS .............................................................. 3
BLOWER WITH CASED EVAPORATOR COIL INSTALLATION .............................. 3
U
PFLOW INSTALLATION .................................................................... 3
C
OUNTERFLOW INSTALLATION ............................................................. 4
HORIZONTAL INSTALLATION ............................................................... 4
ELECTRICAL CONNECTIONS ................................................................ 5
208/230 VOLT LINE CONNECTIONS .................................................... 5
LOW VOLTAGE WIRING ................................................................... 5
OPERATION ON 208 VOLT SUPPLY ...................................................... 5
24 VOLT “LEGACY” THERMOSTAT WIRING ............................................ 5
AUXILIARY ALARM SWITCH ............................................................... 6
CIRCULATOR BLOWER ...................................................................... 6
TROUBLESHOOTING ....................................................................... 10
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................................... 10
DIAGNOSTIC CHART ...................................................................... 10
COMFORTNET™ SYSTEM ............................................................... 10
OVERVIEW ................................................................................ 10
AIRFLOW CONSIDERATION ............................................................... 10
CONTROL WIRING ....................................................................... 11
COMFORTNET™ SYSTEM ADVANCED FEATURES ..................................... 11
DIAGNOSTICS ............................................................................. 13
NETWORK TROUBLESHOOTING .......................................................... 13
SYSTEM TROUBLESHOOTING............................................................. 13
TROUBLESHOOTING INFORMATION: AIR HANDLER DIAGNOSTIC CODES ........... 14
WIRING DIAGRAM ....................................................................... 19
I
F
AN
“E
C
”
ERROR
IS
ENCOUNTERED
ON
STARTUP
,
VERIFY
THAT
THE
ELECTRIC
HEATER
DIP
SWITCHES
HAVE
BEEN
SET
TO
THE
APPROPRIATE
HEATER
SIZE
. S
EE
PAGES
7
AND
8
FOR
THE
HEATER
KIT
AIRFLOW
DELIVERY
AND
DIP
SWITCH
SETTINGS
.
NOTICE
THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH REQUIRE A DEFINITE
GROUND. PROVISIONS ARE MADE FOR CONNECTION OF THE GROUND. A DEDI-
CATED GROUND FROM THE MAIN POWER SUPPLY OR AN EARTH GROUND MUST
BE PROVIDED.
I
NTRODUCTION
This booklet contains the installation and operating instructions
for your modular blower cabinet. All warnings and precautions
within this booklet must be observed. Improper installation can
result in problems ranging from noisy operation to property or
equipment damages, dangerous conditions that could result in
injury or personal property damage and that are not covered by
the warranty. Read this booklet and any instructions packaged
with accessories prior to installation. Give this booklet to the user
and explain its provisions. The user should retain this booklet for
future reference.
NOTE: Upon start up in communicating mode the circuit board
may display an “Ec” error. This is an indication that the dip switches
on the control board need to be configured in accordance with
the Electric Heating Airflow Table in this manual. Configuring the
dip switches and resetting power to the unit will clear the error
code.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
NOTE: Discharge body’s static electricity before touching unit. An
electrostatic discharge can adversely affect electrical components.
Use the following precautions during modular blower installation
and servicing to protect the integrated control module from dam-
age. By putting the modular blower, the control, and the person
at the same electrostatic potential, these steps will help avoid ex-
posing the integrated control module to electrostatic discharge.
This procedure is applicable to both installed and uninstalled (un-
grounded) blowers.
1. Disconnect all power to the blower. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic charge
to ground.
2. Firmly touch a clean, unpainted, metal surface of the
modular blower near the control. Any tools held in a
person’s hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution not
to recharge your body with static electricity; (i.e., do not
move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat step 2 before touching control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a blower. Return any old or new
controls to their containers before touching any
ungrounded object.
© 2013, 2015-2017 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.daikincomfort.com - www.goodmanmfg.com - www.amana-hac.com
P/N: IO-438E Date: December 2017
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