Amana
1810 Wilson Parkway • Fayetteville, TN 37334
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation
to know the product better than the customer. This
includes all safety precautions and related items.
Prior to actual installation, thoroughly familiarize
yourself with this Instruction Manual. Pay special
attention to all safety warnings. Often during
installation or repair it is possible to place yourself
in a position which is more hazardous than when
the unit is in operation.
Remember, it is your responsibility to install the
product safely and to know it well enough to be
able to instruct a customer in its safe use.
Safety is a matter of common sense...a matter of
thinking before acting. Most dealers have a list of
specific good safety practices...follow them.
The precautions listed in this Installation Manual
are intended as supplemental to existing practices.
However, if there is a direct conflict between
existing practices and the content of this manual,
the precautions listed here take precedence.
Built Better Than It Has To Be
®
&Air ConditioningHeating
September 2000
Rev. 1
20310101
EDK/EDB
BMA Airhandler
Electric Heat Kit Accessory
Installation Instructions
Contents
Installation Guidelines .................................................1
General...........................................................................1
DESCRIPTION ..........................................................................2
SHIPPING AND HANDLING .....................................................2
APPLICATION VERIFICATION.................................................2
Heater Installation ........................................................2
Electrical Connections.................................................2
POWER SUPPLY .....................................................................3
UNIT INTERFACE .....................................................................3
PLACING LABELS ....................................................................3
OFF
ON
OFF
ON
2
Installation Guidelines
1. Only qualified, experienced technicians should install
or service these accessories.
2. The system and all accessories are to be installed in
accordance with all local codes. If no local codes exist,
follow National Codes (NEC in the United States and
CEC in Canada).
3. Disconnect all power source(s) to equipment before
installing or servicing the system and any accessories.
4. Before operating the unit, be certain it is properly
grounded.
General
Check the model number of the heater kit and compare it
to the list of approved accessories on the BMA Airhander
nameplate. This heater kit must be listed as an approved
accessory. Mark the kit installed on the nameplate of the
unit.
The circuit breakers or the disconnect switch will extend
through the upper door of the blower. In some areas, the
breakers or disconnect switch may meet local code re-
quirements for a physical disconnect.
DESCRIPTION
The EDK and EDB accessory electric heat kits are resistive
heating elements to provide heat for the Amana BMA
Airhandler. EDB models include circuit breakers for elec-
trical overcurrent protection.
SHIPPING AND HANDLING
Check the unit for any shipping damage. If damage is
found, contact the company where you purchased the unit.
If no damage is found, carefully remove and recycle or
properly dispose of all shipping material.
APPLICATION VERIFICATION
It is the installer’s responsibility to verify that the system
being installed will satisfy the building load. The heating
load should be calculated by ACCA’s Manual J or equiva-
lent. Refer to Table 1 for heater output at 240 volts (if
installing with a heat pump, refer to outdoor unit specifica-
tion sheet for heat pump heating capacity). If the supply
voltage is other than 240 volts, apply the correction factor
from Table 2 to the heater output from Table 1.
kW BTUH
EDK05A
EDB05A
4.8 16,400
EDK07A
EDB07A
7.0 23,900
EDK10A
EDB10A
9.5 32,400
EDK15A
EDB15A
14.3 48,800
EDK20A
EDB20A
17.5 59,700
Heater Kit
Heater Capacity @ 240 VAC
Table 1
Heater output @ 240 Volts
Voltage @ Unit Correction Factor
208 0.75
220 0.84
230 0.92
240 1.00
Table 2
Voltage Correction Factor
Heater Installation
WARNING
To avoid the risk of death or personal
injury due to electrical shock, disconnect
all electrical power before changing any
electrical wiring or installing heater kits.
1. Remove top blower door.
2. Carefully insert the heater assembly into the unit.
Ensure the heater does not damage other compo-
nents when installing. Do not allow the heating ele-
ments to contact sharp edges when inserting into the
unit.
IMPORTANT NOTE: To avoid possible electrical fail-
ure due to short circuits, be careful not to damage the
elements while installing. Always check for damaged
elements after installation.
3. Secure the assembly to the cabinet with the eight #8 x
3/8" sheet metal screws provided in the heater kit bag
assembly.
4. If blower is installed in horizontal left, the circuit break-
ers must be turned 180° on the mounting bracket. To
rotate, pull tab on back of circuit breaker to remove
from bracket, turn circuit breaker 180° and snap onto
mounting bracket. The OFF position must be on the
bottom.
5. Remove knockouts on blower door to allow circuit
breaker to extend through door.
3
Electrical Connections
WARNING
To avoid death or personal injury due to
electrical shock, disconnect all electrical
power before connecting electrical wiring.
Wiring must conform to NEC or CEC and all
local codes.
WARNING
To avoid death or personal injury due to
electrical shock, wiring to the unit must be
properly grounded.
CAUTION
To avoid the risk of fire or equipment
damage, use only 75°C copper conductors.
POWER SUPPLY
1. Refer to Table 4 for Minimum Circuit Ampacity and
Maximum Overcurrent Protection (also located on unti
nameplate). Use this information to properly size
supply wire per NEC , CEC or local codes.
2. Remove the proper size knockout from the unit. Be
sure to use correctly sized electrical conduit to bring
power to the unit. Refer to blower coil installation
instructions for knockout sizes and conduit connection
information.
3.
EDK models
Connect power supply wires to high voltage terminal
block per the wiring diagram supplied with the heater
kit.
EDB models
Assemble the low voltage barrier on the left side of the
breakers. This prevents the unit high voltage wires
from touching the low voltage field wires.
4. Connect ground wires to ground lug provided in unit.
NOTE: For models larger than 10 kW using multiple
power supplies, a second ground lug is provided on
the heater assembly.
UNIT INTERFACE
1. Plug the 12-pin male connector from the heater kit into
the 12-pin female connector on the control board in
the unit control box.
2. Check the minimum blower speed allowed for the
heater size installed per Tables 3 and 4 and adjust
blower speed if required.
3. Apply the supplied foam gasket over the edge of the
control box. The gasket seals and protects the control
box against air leaks.
FOAM
GASKET
Double check all factory wiring connections to ensure none
were loosened or detached during shipping and handling.
PLACING LABELS
1. Apply the proper Electric Heat Wiring diagram (pro-
vided in Heater Kit bag assembly) over existing wiring
diagram on the blower housing.
2. On the unit nameplate place a check mark or "X" by the
heater model installed .
4
Table 4
CAUTION
To avoid the risk of fire, overcurrent protection must not exceed the value listed in Table 3.
Table 3
5 kW 7 kW 10 kW 15 kW 20 kW
BMA24
low med med
Do not use Do not use
BMA30
low low low high
Do not use
BMA36
low low low high high
BMA42
low low low low low
Minimum Speed Allowed with Electric Heat
Use only copper wire, 75°C minimum.
Install and size wiring per NEC (National Electrical Code) and local codes.
Above values at 240 VAC
MCA MOP MCA MOP MCA MOP MCA MOP MCA MOP
L1/L2 28.1 30 39.5 45 54.4 60
L3/L4
L1/L2 29.5 30 40.9 45 55.8 60 29.5 30
L3/L4 52.5 60
L1/L2 29.5 30 40.9 45 55.8 60 29.5 30 34.5 35
L3/L4 52.5606060
L1/L2 29.6 30 41.0 45 55.9 60 29.6 30 34.6 35
L3/L4 52.5606060
Do not use
Do not use
BMA24
BMA30
BMA36
BMA42
Model Heater
EDK05A / EDB05A EDK07A / EDB07A EDK10A / EDB10A EDK15A / EDB15A EDK20A / EDB20A
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1
-
2
-
3
-
4
