Allstyle EFM Series Manuel utilisateur
EFM / ELBSERIES
ELECTRIC HEATING UNITS
LM20031 B
INSTALLATION GUIDE
GENERAL
The EFM / ELB Series unit is designed for permanent
upflow, counterflow,or horizontal left/right airflow
installation. Optional DX coils are available that which
allows for add on of DX air conditioning and heat pump
applications to meet specific requirements of the outdoor
equipment. The EFM / ELB Series are available in sev-
eral models ranging from 600 CFM to 2000 CFM of air
movement. Electric resistance heat is available from
3 to 20 KW.
Installation of this unit shall be made in accordance with the National Electric Code, NFPA No. 90A and 90B, and any
other local codes or utilities requirements.
UNPACKING
Carefully unpack the unit and inspect the contents for
damage. If any damage is found at the time of delivery
proper notification and claims should be made with the
carrier who delivered the unit.
Check the unit rating plate to insure model number and
voltage, plus any kits agree with what you ordered. The
supplier should be notified immediately of any
discrepancy or parts shortage.
LOCATION
The blower coil unit should be centrally located and may
be installed in an attic, basement or crawl space with 0”
clearance from any side, front, rear or duct work
If the unit is located above a finished ceiling or
space, an auxiliary safety drain pan must be
installed under the unit. A separate drain line must
be installed from the safety pan.
WARNING:
Due to possible damage to equipment or personal injury, installation, service and
maintenance should only be performed by a trained, qualified person. Consumer service is recommended
only for filter replacement.
WARNING: HAZARDOUS VOLTAGE –Ensure all power is disconnected before installing or servicing
this unit. More than one disconnect device may be required to de-energize the equipment. Hazardous voltage
can cause severe personal injury. Make certain all panels are in place before operating this unit.
Coil Company, L.P
9.2015
INSTALLATION GUIDE
Page 2
EFM / ELB Series Installation Guide
The unit must be installed in a level position to ensure
proper condensate drainage. Make certain the unit is
level in both directions within 1/8”
When the unit is installed in an enclosed area, the room
should be large enough, and have an opening large
enough to allow replacement of the unit. All servicing is
done from the front and a clearance of 24” is needed for
service.
If you are installing the unit in an unconditioned
space such as an attic or crawlspace, you must
insure that the area provides sufficient air
circulation to prevent moisture collection on the
cabinet during high dew point conditions. A drain
pan must be installed under the entire unit when it is
installed above a finished ceiling or location in a
finished ceiling or location in an unconditioned
space.
INSTALLATION WITH OPTIONAL DX COIL
These air handler units are supplied ready to be
installed in an upflow, downflow and horizontal left
or right position. If the unit is to be installed with an
optional evaporator coil, see Figure 1 for typical unit
positioning.
DUCT WORK
The duct work should be installed in accordance with the
NFPA No. 90A “Installation of Air Conditioning and
Ventilating Systems” and NFPA No. 90B “Residential
Type Warm Air Heating and Air Conditioning
Installation.”
The duct work should be insulated in accordance with
the applicable requirements for the particular type
installation as required by HUD, FHA, VA, the applicable
building code, local utility, or other governing body.
CONDENSATE DRAIN
The unit is supplied with 3/4 inch primary and auxiliary
condensate drains. Both drains must be trapped outside
the unit and piped in accordance with applicable building
codes. Do not reduce the drain line size less the
connection size on the drain pan. Condensate should
be piped to an open drain or to the outside. All drains
must pitch downward away from the unit a minimum of
1/8” per foot of line to ensure proper drainage.
Figure 1. Typical Installation with Option DX Evaporator Coil.
AIRFLOW
AIRFLOW
AIRFLOW
AIRFLOW
UPFLOW DOWNFLOW
HORIZONTAL RIGHT
HORIZONTAL LEFT
INSTALLATION GUIDE
EFM / ELB Series Installation Guide
Page 3
REFRIGERANT PIPING
Refrigerant piping external to the unit shall be sized in
accordance with the instructions of the manufacturer of
the outdoor equipment.
METERING DEVICE
Optional air conditioning or heat pump coils are shipped
with a check-flow piston installed which is designed for air
conditioning or heat pump operation. If your application
requires a thermal expansion valve or check expansion
valve then it is necessary to remove the piston from the
distributor assembly and install the proper metering
device. Be sure to follow the instruction in the kit to
ensure proper installation.
WIRING
Consult all schematic and pictorial wiring diagrams of
this unit and the outdoor equipment to determine
compatibility of the wiring connections and to determine
specific requirements.
All field wiring to the blower coil should be installed in
accordance with the latest edition of the National Electric
Code NFPA No. 70 and any local codes.
Check rating plates on unit for rated volts, minimum
circuit ampacity and maximum over current protection.
Supply circuit power wiring must be 75°C. (167°F)
minimum copper conductors only. Copper supply wires
shall be sized to the National Electric Code or local code
requirements, whichever is more stringent.
The unit is shipped wired for 230/240 Volt AC,60 HZ,1
Phase operation. If the unit is to be operated at 208
VAC,60HZ, then follow the instruction on the indoor unit
wiring diagram to change the low voltage transformer to
208 VAC operation.
Be sure the unit is properly grounded.
Class 2 low voltage control wiring should not be run in
conduit with power wiring and must be separated from
power wiring, unless class 1 wire of proper voltage rating
is used. Low voltage control wiring should be 18 Awg,
color coded (105°C minimum). For lengths longer
than 100ft., 16 Awg wire should be used. Make certain
that separation of control wiring and power wiring has
been maintained.
AIR FILTER
An air filter must be installed prior to the air entering the
evaporator coil to protect the coil, blower and other
internal parts from excessive dirt and dust. The door
must be securely fastened in place to ensure proper
filtration of the return air. A remote return air filter grille
may be used for ducted return air applications. Change
the filter every 30 days or as soon as dust or dirt appear
on the filter. Failure to change the filter in a timely
fashion can result in reduced airflow, increased
operating cost and may result in damage to the indoor
unit and or outdoor unit.
THERMOSTAT
Select a thermostat that is commonly referred to as a
single stage cooling with electric heat sub base. This
thermostat will energize the fan on a demand for heat or
cool.
Install the thermostat on an inside wall, away from drafts,
lights or other heat sources in a location that has good
air circulation from the other rooms being controlled by
the thermostat. The thermostat should be mounted 4 to
5 feet above the floor.
BLOWER
This unit is supplied with a multi-speed motor with a
direct drive blower wheel which can obtain various air
flows (See specification sheet for airflow data). The unit
is shipped with the blower connected for high speed. If a
lower blower speed is required, disconnect all power to
the unit, remove the black indoor fan motor lead from the
fan relay, place an insulated cap on the black lead,
remove the insulated cap from the red indoor fan motor
lead, place a spade connector on the lead and connect it
to the fan relay where the black lead was originally
connected. Be sure to check the air flow and the
temperature drop across the evaporator coil to ensure
that you have sufficient air flow.
INSTALLATION GUIDE
Page 4
EFM / ELB Series Installation Guide
START UP
Once all connections are completed, the unit should be
started up and a check of the completed system should
be performed. Before performing any system test make
sure that all grilles, registers and dampers are open and
set to the correct positions. Also make certain that an air
filter is installed in the return air prior to the Air Handler.
A performance test should be completed in accordance
with the outdoor equipment manufacturer’s instructions.
Airflow test should be conducted in the heating and
cooling modes to ensure satisfactory operation.
MAINTENANCE
The system air filter(s) should be inspected, cleaned or
replaced at least monthly. If the filter is mounted internal
to unit, make sure that electrical power is disconnected
before removing the access panels. Make certain that
the access panels are replaced and secured properly
before placing the unit back in operation. This product is
designed for dependable service; however, periodic
maintenance should be scheduled to be conducted by
trained professional service personnel. This service
should be conducted at least annually, and should
include testing and inspection of electrical and
refrigerant components. The heat transfer surface
should be cleaned. The blower motor is permanently
lubricated for normal operating conditions.
SEQUENCE OF OPERATION
Cooling (cooling only or heat pump with reversing
valve energized in heat mode):When the thermostat
calls for cooling, the blower relay is energized. The N.O.
contacts will close after a time delay, and the indoor
blower will operate. The circuit between R and Y is
complete which causes the contactor on the outdoor
equipment to close,and start the compressor and the
outdoor fan motor.
Cooling (heat pump with reversing valve energized
in cooling mode):When the thermostat calls for
cooling, the circuit between R and G and R and O is
complete. Circuit R and O energizes the reversing
valve to the cooling position, Circuit R and G energizes
the blower relay. The N.O. contacts will close after a
time delay,and the indoor blower will operate. The
circuit between R and Y is complete, which causes the
contactor on the outdoor equipment to close and start the
compressor and the outdoor fan motor.
Heating (electric heat only):When the thermostat calls
for heat the circuit between R and W is complete, and
the heat sequencer is energized. A time delay will
occur which allows the heating element(s) and the
indoor blower motor to come on.
Heating (heat pump reversing valve energized in
heat mode):When the thermostat calls for heat, the
circuits between R and B, R and Y,and R and G are
complete. Circuit R and B energize the reversing valve
switching it to the heat position. Circuit R and Y
energized the outdoor unit contactor starting the
compressor and outdoor fan. Circuit R and G energizes
the blower relay starting the blower motor.
If the indoor room temperature should continue to fall,
circuit R and W2 is by the second-stage heat bulb on the
thermostat. Circuit R-W2 energizes the heat sequencer.
The completed circuit will energize the supplemental
electric heat.
Blower Time Delay:This unit is equipped with timed on
and a timed off relay. This relay delays the start and
delays the stopping of the indoor fan motor to maximize
the efficiency of the unit.
Defrost:When the unit starts the defrost cycle
supplemental heat during defrost can be provided by
connecting B on the blower coil to the defrost relay
on the outdoor heat pump. This will complete the
circuit between R and B in the blower coil,through a set
of contacts in the defrost relay in the outdoor unit.
This circuit, when it is connected, will help prevent cold
air from being discharged from the indoor unit during
the defrost mode.
WARNING: Do not store or use any
corrosives or combustibles in the vicinity of this
unit. All panels must be in place and properly
secured before operating this equipment.
All electrical power servicing this unit must be
disconnected prior to removal of any panels.
Service of this unit must be accomplished by
qualified trained professional personnel only.
Figure 2. EFM / ELB Wiring Diagram with Electric Heat Option
WIRING DIAGRAM
GND
L1
L2
M4M3
M1 M2
123456789
ELEMENTHEATING
Black
Blue
Red
Blue
Brown
White
Black
Blue
Blue
Black
Black
Blue
Black
Blue
Plug/Receptacle
Connection
Red
GND
L1
L2
123456789
Black
Blue
ELEMENTHEATING
Red
L1
L2
GND
L1
L2
ELEMENT
M3
HEATER
M4
M2M1
M8
M5
M7
M6
CIRCUIT NO.2CIRCUIT NO.1
HEATING ELEMENTHEATING
RELAY 1 HEATER
RELAY 2
Black
Blue
20 KW
Black
Blue Plug/Receptacle
CIRCUIT NO.2
208-230/60/1
CIRCUIT NO.1
208-230/60/1
60A
NOTE: INSTALLER MUST MARK THE APPROPRIATE BOX AFTER INSTALLING OPTIONAL HEAT KIT AND ATTACH LABEL
NEAR UNIT WIRE DIAGRAM. INSTALLER MUST ENSURE THAT THE SPEED TAP DOES NOT
EXCEED THE MINIMUM HEATING BLOWER SPEED ON AIR HANDLER RATING PLATE.
Red
Plug/Receptacle
Connection Connection
123456789
GND
8, 10 KW
3, 5 KW
Red
Black
Blue
Blue
Black
Blue
Brown
White
Black
Blue
Blue
Black
Black
Blue
Blue
Black
Red
Black
Blue
Blue
Black
Blue
Brown
White
Blue
Black
Blue
Black
Blue
Black
Blue
Black
Black
Black
Blue
Blue
Blue
White
M3 M4
M2M1
M8
M5
M7
M6
Blue
Black
Blue
Black
AW1502-55345-B
L1
L2
CIRCUIT NO.2
208-230/30/1
GND
L1
L2
CIRCUIT NO.1
208-230/60/1
M4M3
M2M1
M8M7
M6M5
M4M3
M2
M1
123456789
ELEMENT
CIRCUIT NO.2
HEATING
Black
Blue
Black
Blue
Red
Blue
Brown
White
Blue
White
Black
Blue
Blue
Black
Blue
Black
Black
Blue
Blue
Black
Black
Blue
Plug/Receptacle
Connection
ELEMENT
CIRCUIT NO.1
HEATING
GND
Red
15 KW
HEATER
RELAY 1 HEATER
RELAY 2
60A
60A
30A
M4M3
M2M1
M8M7
M6M5
HEATER
RELAY
HEATER
RELAY
123456789
L1 L2 GND
W G R C Y
THERMOSTAT
INDOOR
MOTOR
Purple
Black
Blue
Red
Brown
White
Green
Red
Purple
Red
Yellow
Green
Orange
Blue
Yellow
SEE NOTE 3
Blue
Black
Black
Blue
Red
Black
Purple
TRANSFORMER
24V
TERMINAL
BLOCK
PLUG/RECEPTACLE
CONNECTION
FACTORY WIRING
NOTE 1) Wiring change is required to convert transformer to 208 Volts.
Disconnect power. Disconnect orange high voltage lead and place on
terminal labeled as "208V" for 208 Volts power.
NOTE 2) Brown and White wires are used with Auxillary Heat Kits only.
NOTE 3) Used with Auxillary Heat Kits only.
WIRING TABLE
HIGH VOLTAGE WIRING
LOW VOLTAGE WIRING
FIELD WIRING
DISCONNECT POWER BEFORE
INSTALLATION OR SERVICING.
MULTIPLE POWER SOURCES
MAY BE PRESENT.
FAILURE TO DO SO MAY
CAUSE PROPERTY DAMAGE,
PERSONAL INJURY, OR DEATH.
230V
208V
Com
SEE
NOTE 1
SEE NOTE 2
CONSULT NATIONAL CODE FOR PROPER WIRE SIZE.
Single Speed Fan Control
Connect Only One Fan Lead
Not all models have 3 speeds
Black - High Speed
Blue - Medium Speed
Red - Low Speed
AW1509-55301-E
Air Handler - No Heat
TO BE REMOVED WHEN INSTALLING
HEATING ELEMENT KIT.
G C R
FAN TIMER
COM
NC
NO
24V CLASS 2 Wiring
USE COPPER CONNECTORS
ONLY.
Use Conductors Suitable for 167
Deg F.
208-230VAC / 60Hz / 1Ph
EQUIPMENT GROUND USE
COPPER OR ALUMINUM WIRE.
EFM / ELB Series Installation GuideRev. 9/2015
AllStyle Coil Company, L.P.
7037 Brittmoore Rd.
Houston, TX 77041
Conforms to UL STD 1995 Made in USA
Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specification without notice.
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