Marvair ELA07ACB User manual

INSTALLATION INSTRUCTIONS FOR
7,100 BTUH Package Air Conditioners
ELA07ACB (6531_692) • ELA07RCW (6571_662)
K/03621 (6531_625) Accessory Kit
14,000 BTUH Package Air Conditioners
ELA12ACB (6533_892) • ELA12ACW (6573_892)
K/03622 (6533_625) Installation Kit
Ch 1: Important Safety Precautions .................................................................2
Ch 2: Component Match-up .............................................................................3
Ch 3: Specications and Unit Identication .......................................................3
Ch 4: Unit Depiction Figures ............................................................................4
Ch 5: General Information ...............................................................................4
Ch 6: Unit Installation .....................................................................................6
Ch 7: Electrical Wiring ...................................................................................10
CH 8: Thermostat and 24 VAC Wiring..............................................................11
CH 9: Start-Up ..............................................................................................12
CH 10: Maintenance Instructions......................................................................13
CH 11: Installation Instructions for Condensate Evaporator ................................14
CH 12: Features and Options ...........................................................................19
115V. UNIT ONLY
Elevator Motors Corporation
80 Carolyn Boulevard
Farmingdale, NY 11735 USA
T: [phone] • F: [phone]
E-mail: [email protected]
Internet: www.elevatormotors.com
REV. 03/22

Chapter 1: Important Safety Precautions
These instructions are for the use of qualied individuals specially trained and experienced in instal-
lation of this type equipment and related system components.
The words “Shall” or “Must” indicate a requirement which is essential to satisfactory and safe prod-
uct performance.
The words “Should” or “May” indicate a recommendation or advice which is not essential and not
required but which may be useful or helpful.
CAREFULLY FOLLOW ALL INSTRUCTIONS AND WARNINGS IN THIS BOOKLET TO
AVOID DAMAGE TO THE EQUIPMENT, PERSONAL INJURY OR FIRE.
Installation and service personnel are required by some states to be licensed. PERSONS NOT
QUALIFIED SHALL NOT INSTALL NOR SERVICE THIS EQUIPMENT.
This is the safety alert symbol . When you see this symbol on the unit and in the instruction
manuals be alert to the potential for personal injury. Understand the signal words DANGER,
WARNING and CAUTION. These words are used to identify levels of the seriousness of the
hazard.
Failure to comply will result in death or severe personal injury and/or property
damage.
Failure to comply could result in death or severe personal injury and/or property
damage.
Failure to comply could result in minor personal injury and/or property damage.
IMPORTANT is used to point out helpful suggestions that will result in improved installation,
reliability or operation.
!DANGER
!WARNING
!CAUTION
WARNING
Improper installation may damage equipment, can create a hazard and may void
the warranty.
The use of components not tested in combination with this unit may void the
warranty, may make the equipment in violation of state codes, may create a hazard
and may ruin the equipment.
We believe that you will be pleased with the performance of the Marvair LiftAire™ Elevator Air
Conditioner. This unique product was specically designed for installation on elevators. Should you
need assistance in the installation of the product, or should you need service assistance after the unit
is installed, please contact our exclusive sales and service agent for this product line listed below:
Elevator Motors Corporation
80 Carolyn Blvd.
Farmingdale, NY 11735-1525
T: 631-293-4220
F: 631-293-2714
[email protected]
2

2
Chapter 2: Component Match-up
AIR CONDITIONER ACCESSORY KIT
ELA07ACB (6531_692) (6531_625)
ELA07RCW (6571_662)
ELA12ACB (6533_892) (6533_625)
ELA12ACW (6573_892)
Chapter 3: Specication and Unit Identication
Package Air Conditioner Model Number Break-down
EL A • AC •
Elevator Air Conditioner
Refrigerant
R-410A Refrigerant
Nominal Cooling Capacity
07 = 7,100 BTUH
12 = 14,000 BTUH
AC = Air Conditioner
Power Supply
B = 115V, 1Ø, 60 Hz
W = 220-240V, 1Ø, 50 Hz
BASIC
MODEL
COMPRESSOR
SINGLE
AIR MOVER
MOTOR
CONDENSER
MOTOR
EVAPORATOR
MOTOR
ELECTRIC
HEATER
MCA6MFS7RWCaRWCbRWH8MSC9
VOLTS-HZ-PH RLA1LRA2FLA3,4 HP FLA3,4 HP5FLA3,4 HP5FLA3,4
ELA07ACW 220/240-1-50 3.8 18.8 1.5 1/4 N/A N/A N/A N/A 6.7 9.9 10 975 1,130 1,600 #12
ELA07ACB 115-1-60 7.5 45.6 2.9 1/3 N/A N/A N/A N/A 12.5 18.5 20 990 1,150 1,600 #12
ELA12ACW 220/240-1-50 5.5 24.5 N/A N/A 1.0 1/5 1.2 1/5 6.7 9.9 10 1,550 1,785 1,600 #12
ELA12ACB 115-1-60 12.7 63.0 N/A N/A 2.1 1/5 2.4 1/5 12.5 19 20 1,400 1,625 1,600 #12
1RLA = Rated Load Amps
2LRA=Locked Rotor Amps
3FLA=Full Load Amps
4Electrical data is for air conditioner only - it does NOT include the condensate evaporator
5HP = Horsepower
6MCA = Maximum Circuit Ampacity (Wiring Size Amps)
7MFS = Maximum Fuse Size
aRWC = Running Watts Cooling, Tested under the following conditions: 80°F(26.5°C)DB/67°F(19.5°C)WB Indoor, 95°F(35°C)
DB Outdoor at 115 VAC.
bRWC = Running Watts Cooling, Tested under the following conditions: 100°F(37.8°C) DB/72°F (21.7°C). WB Indoor, 115°F(46.1°C)
DB Outdoor at 103.5 VAC.
8RWH = Running Watts Heating
9MSC = Minimum Supply Conductor, Supply conductor gauge dependent upon conductor length, Full Load Amps and Locked
Rotor Amps of the compressor.
Electrical Characteristics
BASIC MODEL POWER SUPPLY
NOMINAL
COOLING
CAPACITY
BTUH (kW)
NOMINAL
HEATING
CAPACITY
BTUH (kW)
AIRFLOW
(HIGH SPEED)
CFM1M3/HOUR2
ELA07ACW (6571) 220/240-1-50 7,100 BTUH
(2.1 kW)
5,600 BTUH
(1.6 KW)
175 260
ELA07ACB (6531) 115-1-60 150 255
ELA12ACW (6573)
220/240v-1-50
14,000 BTUH
(3.5 kW)
5,600 BTUH
(1.6 KW)
600 900
ELA12ACB (6533)
115-1-60
430 645
1CFM = Cubic Feet per Minute
2M3/Hour = Cubic Meters per Hour
Air Flow
3

Chapter 4: Unit Depiction Figures
Chapter 5: General Information
The ELA07, 6531_692 or 6571_662, and ELA12, 6533_892 or 6573_892 series package air
conditioners are intended for installation on the roof of elevator cabs or like-sized indoor use
contrivances. It is understood that the manufacturer has provided an installation area which
allows for cutouts and unit mounting without cutting vital frame members or electrical wiring and
that structural members do not create restrictions by passing through airways required by the air
conditioner. A recommended installation is shown in Figures 1a & 1b. Conditioned air is delivered
from the air conditioner to the interior of the enclosure through ducting that is supplied in Accessory
Kit (6531_625) for the ELA07, 6531_692 or 6571_662 and Accessory Kit (6533_625) for the
ELA12, 6533_892 or 6573_892 Models.
The system return air duct, return air lter and thermostat are also found in the Accessory Kit.
BASIC MODEL
Weight Dimensions Inches (cm)
lbs (kg) Length Depth Height
ELA07ACW (6571) 90 (40.9) 22" (56) 18 (46) 19-1/4 (49)
ELA07ACB (6531)
ELA12ACW (6533) 145 (65.9) 39 (99) 23 (58.4) 18-1/8 (46)
ELA12ACB (6573)
Weights and dimensions are actual for basic model. Ship weight of the ELA07 is 118 lbs (53.5 kg).
Ship weight of the ELA12 is 206 lbs (93.4 kg).
Dimensional Data and Weight
Figure 1a, ELA07, 6531/6571 Units Figure 1b, ELA12, 6533/6573 Units
4

4
The LiftAire I Series of air conditioners are specically designed and constructed for use on new
elevator installations, modernizations and retrots of existing elevator cabs. They are provided with
all the materials needed to properly cool and/or heat an elevator cab. To ensure maximum efciency
and operation, the following should be adhered to:
1. Supply and return registers in the cab should not restrict airow into and out of the cab. Any
resistance of the airow will limit the effectiveness of the unit and create wind noise. The
return air and supply air registers should be as far away from each other to ensure proper air
recirculation in the cab and back to the air conditioner.
2. While the installation kit provides 12.5 ft (381 cm) of supply and return air exible duct,
in order to limit air ow resistance, all duct connections should be the most direct and the
shortest possible. Cut any extra exible duct not required, connect exible duct per previous
installation instructions (pages 6-10) and discard any extra material.
3. Ensure that the thermostat is installed in the return duct or the cab. If using the standard
thermostat, check that the temperature and operation settings are correct. If using the automatic
thermostat, make sure the unit is programmed for the type of operation you require. When the
thermostat is installed in the cab, it must be able to sense cab temperature to operate properly.
If placed within the xture area of the cab, there must be a perforated cover to allow cab air
access to the thermostat. Locating the thermostat anywhere else affects the proper operation of
the air conditioners and cooling of the elevator cab as designed.
4. If you are retrotting an existing cab for normal operating conditions, it may not be necessary
to use the fan supplied in the original cab. The LiftAire series of air conditioners has a fan that
will run continuously with proper settings of the thermostat. If you allow the cab fan to operate
during normal conditions you will bring hot, cold or humid hoistway air into the cab, thereby
defeating the purpose of the air conditioner and its effectiveness. If it is permitted, remove the
original fan to prevent allowing warm hoistway air into the cab during ascent and descent of
elevator. Or insure the fan only operates if the air conditioner cannot operate due to power loss,
etcetera.
5. All supply and return registers with duct work into the cab must be manufactured and installed
to prevent any air leaks and losses of the cold supply air from the air conditioner and return air
back to the air conditioner.
6. Never install the condensate evaporator under the return or supply air ducts. This can cause
water accumulation, damage to the ducts and damage to the cab.
7. It is the responsibiity of the installer to ensure that the installation meets any and all building,
electrical and other applicable codes.
8. Power cables must be sufciently sized for the FLA, LRA required and the length of cable
required.
9. Additional hoistway ventilation at the bottom and top is recommended.
5

Chapter 6: The LiftAire I Series (ELA07, 6531_692 or
6571_662) Unit Installation
1. The air conditioner draws in topside air to cool the condensing coil. The condenser air is drawn
in from the end of the air conditioner (across the condensing coil), and discharged out through
the top of the appliance (through the discharge opening). To provide adequate condenser air
ow and access for service, allow a minimum of 15” (38 cm) of clearance on the top and all
sides of the air conditioner to any obstruction. To provide adequate condensing air ow, the
installer must adhere to the following guidelines:
a) The topside air path to the condensing coil should be as direct and non-restrictive as
possible.
b) Any decorative grille or louver used as an opening for condenser air ow should have a
minimum of 90 square inches (580.6 sq. cm) of free area.
c) Do not block or restrict the discharge air opening.
d) Insure that there are no structural members or panels which would serve to cause condenser
discharge air recirculation into the condenser return air.
2. Mount the air conditioning unit. The four shipping brackets may be used to secure the unit
to the mounting surface, or the installer may choose to use bands or other types of bracket. If
using a condensate evaporator with the air conditioner, elevate the air conditioner 4-5 inches
(10 -12 cm) to ensure that the condensate will drain from the air conditioner to the evaporator.
3. Attach the supply duct adapter (start collar) to the top of the unit with the four existing screws
in the unit top.
4. Mount the thermostat to the thermostat bracket using the screws provided with the thermostat.
5. Cut a 10 1/8" (25.7 cm) square opening in the canopy. The opening should be as remote as
possible from the intended position of the supply air distribution scoop and away from any heat
source such as lighting. There must be adequate space between the false ceiling and the cab top
to insure proper return air ow to the air conditioner. If not, the collar must be positioned in the
false ceiling.
6. Fasten the thermostat/bracket and the return air duct adaptor over the square opening with
screws or rivets. Use a quality duct tape to seal around the perimeter of the adaptor plate.
7. Install the supply air distribution scoop inside the conditioned space in an area as remote from
the return air as possible. Air from the scoop should have a clear path into the conditioned area.
Attach the scoop with adhesive, straps, brackets or by fastening through the part. If attaching
with fasteners, pre-drill any clearance holes in the scoop to prevent cracking during installation.
It is good practice to mount the scoop as far as possible from heat producing devices, such as
lights, xtures, etc.
8. Cut a 6" (15.2 cm) dia. hole in the roof to allow passage of the insulated 4" (10.2 cm) ex duct.
The duct connects between the 4" (10.2 cm) collar at the unit and the oval opening at the air
scoop. Secure the duct with 2 of the 4 cable ties provided in the accessory kit.
9. Secure the 7/8" (2.2 cm) I.D. condensate drain hose to the unit drain pan with the hose clamp
provided in the kit.
10. Mount the return air bonnet to the unit using existing unit screws. Clearance holes on the return
air bonnet align with existing unit fasteners. Use a good quality duct tape to seal the bottom and
side seams between the unit and return air bonnet.
11. Insure the return air lter is properly located inside the bonnet assembly.
6

6
12. Attach the unit end of the return air ex duct to the return air bonnet with one cable tie provided
in the kit.
13. Cut a small slit through the return air ex duct directly above the adaptor plate to provide
clearance for the thermostat cable to enter the return air opening.
14. Route the thermostat extension cable through the ex duct and plug one end into the thermostat,
the other end into the unit.
15. Attach the return air ex duct to the adaptor plate and secure with one cable tie provided in the
kit.
16. Use a quality duct tape to seal the opening in the return air ex duct around the thermostat
cable.
WARNING - SHOCK HAZARD
Do not drill any openings into this air conditioner. When attaching ducting directly
to the air conditioner, use only the pilot holes already provided. Drilling new
openings and inserting screws may damage either the refrigeration circuit or
electrical wiring causing possible equipment damage, personal injury or death.
The LiftAire II Series (ELA12, 6533_892 or 6573_892)
Unit Installation (Refer to Figure 1b)
1. The air conditioner draws in topside air to cool the condensing coil. The air is drawn in from
the end of the air conditioner (across the condensing coil), and discharged out through the
discharge opening.
To provide adequate condensing airow, the installer must adhere to the following guidelines:
• The air path to the condensing coil should be as direct and non-restrictive as possible.
• Do not block or restrict the discharge opening.
• Ensure that there are no structural members or panels which would serve to cause condenser
discharge air to recirculate into the condenser return air.
2. Remove and discard the plate and styrofoam adapter from the desired supply air outlet (top
or end). Attach the 10-inch (25.4 cm) diameter collar assembly using the existing screws
supplied on top of the air conditioner.
3. Mount the 10-inch (25.4 cm) diameter starting collar to the return air inlet by crimping the
existing tabs.
4. Mount the air conditioner using the four shipping brackets or use band or brackets of your own.
If using a condensate evaporator with the air conditioner, elevate the air conditioner 4-5 inch
(10.2-12.7cm) to ensure proper drainage of condensate from the air conditioner drain pan to the
evaporator.
5. Mount the thermostat to the thermostat mounting bracket using the screws provided with the
thermostat. Connect extension cable to thermostats cable. Attach thermostat with mounting
bracket to a 10-inch (25.4 cm) collar assembly using two (2) sheet metal screws.
6. Cut a 10 1/8" (25.7 cm) square opening in the cab top as far as possible from the intended
7

location of the supply air distribution scoops. Position 10-inch (25.4 cm) diameter collar
assembly with the thermostat/bracket over the opening. There must be adequate space between
the false ceiling and the cab top to insure proper return air ow to the air conditioner. If not,
the collar must be positioned in the false ceiling. Fasten the collar to the canopy with rivets or
screws. Using quality duct tape, seal the seams around the perimeter of the collar assembly.
7. Install the four (4) supply air distribution scoops in an area as far as possible from the return
air 10-inch (25.4 cm) diameter collar assembly installed in Step 6. Air from the scoops should
have a clear path into the conditioned cab. Attach the scoop with adhesive, straps, brackets or
by fastening through the part. If attaching with fasteners, pre-drill any clearance holes in the
scoops to prevent cracking during installation. It is also good practice to mount the scoop away
from any heat producing devices such as lights, xtures, etc.
8. Attach one (1) 10-inch (25.4 cm) starting collar by crimping the existing tabs and attach four
4 inch (10.1 cm) starting collars to the plenum box. Mount the plenum box below the cab top
and run the 4 inch plenum supply air ex duct from the plenum to the four (4) air distribution
scoops. Ensure that the most direct and shortest length of duct is used. Cut off any excess.
Secure duct at plenum and scoops using the duct ties provided. Cut a 14-inch (35.6 cm)
diameter hole in the cab top for the 10-inch (25.4 cm)) diameter insulated supply air ex duct to
pass through. Connect duct to the top of plenum and to the collar assembly installed in Step 2.
Ensure that the most direct and shortest length of duct is used. Cut off any excess. Secure the
duct at the plenum and collar assembly using the duct ties provided.
9. Connect the 10-inch (25.4 cm) diameter uninsulated return air ex duct to the return air starting
collar installed in Step 3. Secure the duct to the collar assembly using the duct ties provided.
10. Determine the most direct and shortest length of duct to be used to connect the 10-inch (25.4
cm) diameter uninsulated return air ex duct to the 10-inch (25.4 cm) diameter collar installed
in Step 6. Cut a small slit through the 10-inch (25.4 cm) diameter uninsulated return air ex
duct directly above the 10-inch (25.4 cm) diameter collar assembly and route the thermostat
extension cable through the slit in the duct. Cut off any excess duct and attach duct to collar
using the duct ties provided. Seal the duct where the thermostat cable exits with a quality duct
tape.
WARNING - SHOCK HAZARD
Do not drill any openings into this air conditioner. When attaching ducting directly
to the air conditioner, use only the pilot holes already provided. Drilling new
openings and inserting screws may damage either the refrigeration circuit or
electrical wiring causing possible equipment damage, personal injury or death.
The LiftAire II Series (ELA12, 6533_892 or 6573_892
Alternate Unit Installation
Refer to Figure 2
1. The air conditioner draws topside air to cool the condensing coil the condensing coil. The air is
drawn in from the end of the air conditioner, across the condensing coil and discharged through
the discharge opening. To provide adequate condensing airow, the installer must adhere to the
following guidelines:
• The air path to the condensing coil should be as direct and non-restrictive as possible.
8

8
• Do not block or restrict the discharge opening.
• Ensure that there are no panels or structural members that cause the condenser discharge air to
be recirculated into the condenser return air.
2. Remove and discard the plate and styrofoam adapter from the desired supply air outlet (top or
end). Attach the 10-inch (25.4 cm) diameter collar assembly using the existing screws supplied
on top of the air conditioner.
3. Mount the 10-inch (25.4 cm) diameter starting collar to the return air inlet by crimping the
existing tabs.
4. Mount the air conditioner using the four (4) shipping brackets or use band or brackets of your
own. If using a condensate evaporator with the air conditioner, elevate the air conditioner at
least 5 inches (12.7cm) to ensure proper drainage of condensate from the air conditioner drain
pan to the evaporator.
5. Mount the thermostat to the thermostat mounting bracket using the screws provided with the
thermostat. Connect extension cable to thermostat cable. Attach thermostat with mounting
bracket to a 10-inch (25.4 cm) collar assembly using two (2) sheet metal screws.
6. Cut a 10 1/8 inch (25.7 cm) square opening in the cab top as far as possible from the intended
location of the supply air ex duct into the cab. Position 10-inch (25.4 cm) diameter collar
assembly with the thermostat/bracket over the opening. There must be adequate space between
the false ceiling and the cab top to insure proper return air ow to the air conditioner. If not,
the collar must be positioned in the false ceiling. Fasten the collar to the cab top with rivets or
screws. Using quality duct tape, seal the seams around the perimeter of the collar assembly.
7. Install one (1) supply air distribution diffuser (supplied by others) in the cab in an area as far
as possible from the return air 10-inch (25.4 cm) diameter collar assembly installed in Step 6.
Air from the diffuser should have a clear path into the conditioned cab. The diffuser used is
to be provided by the installer and should be capable of using the 10-inch diameter insulated
supply air ex duct. It is also good practice to mount the diffuser away from any heat producing
devices such as lights, xtures, etc.
8. Cut a 14-inch (35.6 cm) diameter hole in the cab top for the10-inch (25.4 cm) diameter
insulated supply air ex duct to pass through. Connect duct to top of diffuser and to the collar
assembly installed in Step 2. Ensure that the most direct and shortest length of duct is used. Cut
off any excess. Secure the duct at the diffuser and collar assembly using the duct ties provided.
9. Connect the 10-inch (25.4 cm) diameter uninsulated return air ex duct to the return air starting
collar installed in Step 3. Secure the duct to the collar assembly using the duct ties provided.
10. Determine the most direct and shortest length of duct to be used to connect the 10-inch (25.4
cm) diameter uninsulated return air ex duct to the 10-inch (25.4 cm) diameter collar assembly
installed in Step 6. Cut a small slit through the 10-inch (25.4 cm) diameter uninsulated return
air ex duct directly above the 10-inch (25.4 cm) diameter collar assembly and route the
thermostat extension cable through the slit in the duct. Cut off any excess duct and attach the
duct to the collar using the duct ties provided. Seal the duct where the thermostat cable exits
with a quality duct tape.
11. Plug the remaining end of the cable into the air conditioners thermostat 4-pin connector.
12. Attach the 7/8 inch (2.2 cm) ID condensate drain hose to the drain pan on the air conditioner
and secure with hose clamp provided.
9

Figure 2 ELA12 Alternate Installation
WARNING - SHOCK HAZARD
To prevent the possibility of severe personal injury or equipment damage due
to electrical shock, always be sure the electrical power is disconnected or off
before beginning installation.
Chapter 7: Electrical Wiring
1. 1.This air conditioner contains a compressor refrigeration system and requires power from an
electrical circuit. The circuit connects to a terminal block inside the air conditioner. See table
below.
Model Number Power Supply
ELA07ACB (6531_692)
115V, 1Ø, 60 Hz
ELA12ACB (6533_892)
ELA07ACW (6571_662)
220-240V, 1Ø, 50 Hz
ELA12ACW (6573_892)
2. High Voltage Routing Specications
When routing the high voltage supply wiring, the following guidelines must be followed:
a) High voltage wiring must be routed through a separate opening in the outer cabinet. This
opening is referred to as the “power wire entry” (See Figure 1). There is a 7/8" (2.22 cm)
diameter opening for 1/2" (1.27 cm) conduit. A knockout for 3/4" (1.91 cm) conduit is also
provided.
b) Do not allow excess wiring to contact electrical terminals, sharp screw ends or edging that
can cut or damage the wiring insulation.
c) After connecting the ground wire to the grounding lug, verify that the ground wire (which
in some instances will be bare copper) cannot come into contact with any high voltage
terminal.
d) High voltage power supply must be sized according to code and to prevent losses from long
cable runs to insure proper voltage and amps to the air conditioner at unit startup amperage.
1. Optional Supply Air (Top) Outlet
2. Supply Air (End) Outlet With
10" Diameter Insulated Supply
Air Flex Duct
3. Supply Air Distribution Diffuser By
Installer
4. 10" Dia. Uninsulated Return Air Flex
Duct Connected To 10" Diameter
Assemblies
5. Thermostat With Mounting Bracket
10

10
DANGER - SHOCK HAZARD
When using non-metallic sheath supply cables (romex, etc.), strip sheath back
to expose 4-6 inches of the supply leads. Strip the individual wire lead ends for
wire connection (about 3/4" bare wire). Insert the supply wires into the electrical
connector clamp. Sheath must protrude past clamp bushing inside the box. Make
sure sheath cable is centered in clamp before tightening it. Do not over- tighten!
This could result in pinching through the plastic wire insulation and cause shorting
or “hot” wires to ground (shock hazard). The clamp is intended for strain relief of
the wires. Slight pressure is usually sufcient to accomplish this. If other than non-
metallic cables are used for supply conductors, appropriate strain relief connectors
or clamps should be used. In no case should clamping or pinching action be
applied to the individual supply leads (neutral and “hot” wires).
To prevent the possibility of shock injury from appliance operation, the white wire
must be connected to neutral in the service box entrance and the mechanical
ground must be connected to a grounding lug either in the service box or the motor
generator compartment.
In order to utilize smaller gauge, less expensive follower cables, it may be economical to provide a
step down transformer at the elevator car to provide power for the air conditioner.
Chapter 8: Thermostat and 24 VAC Wiring
Thermostat Operating and Wiring Requirements
The ELA series air conditioners are designed to be controlled by the 24 VAC thermostat provided in
the installation kit or by our optional automatic thermostat.
The thermostat should be mounted on the return air duct mounting bracket (see Figure 1). The
air conditioner and thermostat connect using the plug-in extension cable provided in the (6531_625)
and (6533_625) Installation Kit.
The chart below details system functions.
SHOWS POSITION OF SWITCH
OPERATION
FAN SYSTEM
AUTO ON COOL OFF HEAT
Compressor and blower cycle as required.
No functions occur.
Heater and blower cycle as required.
Blower runs continuously. Compressor cycles as required.
Blower runs continuously. No heating or cooling function occurs.
Blower runs continuously. Heater cycles as required.
11

Chapter 9: Start-Up
1. Before engaging power to any system, insure the following:
a) all tools have been removed from the equipment;
b) all wiring is attached, routed and properly secured;
c) all panels (both mechanical and electrical) are in place;
d) the thermostat system switch is placed into the “OFF” position and;
e) all co-workers have been warned that the equipment is being energized.
2. System wiring may be checked by referring to the wiring diagram located on the side of the
unit.
3. Before beginning the checkout procedure, thoroughly read the checkout instructions.
4. After complying with steps 1 through 3, engage power to all systems and begin checkout
procedure.
Important: Prior to starting the air conditioner, double check all electrical connections.
Check out of Cooling Cycle
1. Set the cooling set point temperature on the thermostat to a temperature higher than the ambient
temperature. Set the heating set point temperature to a temperature that is lower than the ambient
temperature.
2. Set the thermostat system to COOL. Nothing should operate at this time. Slowly lower the
thermostat’s cooling set point to a temperature until the switch closes. The compressor and both
fans should begin operating at this time.
To stop cooling, slowly raise the set point temperature to a temperature higher than the
ambient temperature.
12

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Check out of Heating Cycle.
1. Set the thermostat system to HEAT. Raise the heating set point temperature to a temperature
which is higher than the ambient temperature. The fan and electric heat should turn on.
2. To stop heating, slowly raise the set point temperature to a temperature lower than the ambient
temperature.
Important Notes:
1. The air conditioner ELA12, 6533/6573 LiftAire II Model is equipped with high and low pressure
switches to protect against fan failure and refrigerant loss. If either activates, the unit will lock
out until service personnel inspect and repair any problem and reset the unit by depressing the
reset button located on the air conditioner.
2. The unit is equipped with a normally open contact. This contact closes when the high or low
pressure switches are activated or when line voltage is interrupted. It can be used for customer
external alarms or operation.
3. After initial power on or if line voltage is interrupted or there is a power failure, there is an
approximate three (3) minute time delay before the compressor will start up and the air
conditioner will operate.
Chapter 10: Maintentance Instructions
The LiftAire I and LiftAire II Series of air conditioners require very little maintenance during normal
operating conditions. The following are general requirements that should be performed every 4-6
months.
1. Air filters should be inspected and washed on a regular basis. The filters are reusable after being
washed.
2. Evaporator and condenser coils should be inspected and, if dirty, cleaned on a regular
basis. Remove by hand any paper or debris that might have collected on the coils and blow
compressed air through the coils. This should not have to be done very often unless the
shaftway and installation are in a very dirty environment. If compressed air does not thoroughly
clean the evaporator and condenser coils, proper application of a commercial solvent intended
for cleaning coils should be used. TURN POWER OFF BEFORE CLEANING!
3. Inspect and clean the condensate drain pan. Ensure the drain hole and hose are clear of debris to
allow any condensate to properly drain.
4. If a condensate evaporator is used, inspect to ensure there is no debris on the guard or in the
evaporator pan. Ensure drain hole and hose are clear of debris.
5. Check the thermostat display and observe if the low battery symbol or the word “BATTERY” is
flashing. If either one is displayed, the alkaline batteries are low and should be replaced. See
thermostat operating manual for battery replacement instructions.
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Chapter 11: Installation Instructions for the Condensate
Evaporator (115V-20 Amps, 240V-10 Amps)
ELA07 (6531):115v.- 20 Amps; 220/240v. (6571)- 10 Amps
ELA12: (6533) 115v.- 25 Amps; 220/240v. (6573)- 12.5 Amps
Package Contents
1 - Condensate Evaporator Assembly
1 - Unit Drain Filter Pad
2 - Filter Pad Hold-Down Clips
1 -3/8" I.D. x 4 Ft. (.95 I.D. x 121.9 cm) Overow Hose
1 - Hose Clamp
4 - Evaporator Mount Clips
1 - Evaporator Guard
Filter Installation
Center lter pad over condensate drain tting inside of unit drain pan and secure lter pad with hold-
down clips which slide over the edge of the unit drain pan to hold the lter in place (See Figure 2).
Evaporator Installation
A. The elevator air conditioner should rst be installed following the instructions provided with
the unit. The air conditioner must be installed at least 5" (12.7 cm) higher than the mounting
surface for the condensate evaporator to allow for proper drainage (See Figure 3).
B. Install the condensate evaporator with four screws through the mounting anges so
the evaporator is level and will not shift. Position the evaporator guard basket over the
evaporator, routing the conduit through a grid section. Secure evaporator guard to the base
using the four clips provided. Position the guard to allow the overow hose direct entry
through a grid section to the evaporator.
C. Route a length of 7/8" (2.2 cm) I.D. drain hose provided with the air conditioner through a
grid section to provide drainage into the evaporator without touching the evaporator. The
drain hose will t snugly through a grid section. Do not allow the drain hose to route above
the a/c unit drain pan at any point.
D. Attach the 3/8" (.954 cm) ID hose to the evaporator using the clamp provided. This hose
will pass through an evaporator guard grid section. Free end of this hose will be inserted and
secured into the remaining 7/8" (2.2 cm) I.D. hose which passes to the bottom of the elevator.
The 7/8" (2.2 cm) I.D. hose should be clamped to the elevator side. Ensure that a minimum
of 4 inches of evaporator overow hose is inserted and secured into the larger drain hose. Do
not allow the overow hose to route above the evaporator pan at any point.
E. Connect power supply per all building, electrical and other applicable codes.
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Figure 4a ELA07 Figure 4b ELA12
Figure 3
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Figure 5a. Electrical Schematic, Model ELA07ACB
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Figure 5b. Electrical Schematic, Model ELA07ACW
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Figure 6. Electrical Schematic, Model ELA12ACB/ELA12ACW
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Chapter 12: Features and Options
FEATURES
•Lightweight. ELA07 weighs 90 lbs (40.9 kg) and the ELA12 weighs 145 lbs (65.9 kg). The unit
mounts easily.Unit mounts easily in virtually any position on top of the elevator.
• Self-contained, packaged design for easy installation.
• Compact rotary compressor saves space and weight.
• Rated at 7,100 BTUH (ELA07) and 14,000 BTUH (ELA12) nominal cooling capacity.
• Mechanical heat/cool thermostat mounted in return air ex duct for secure settings and more
accurate temperature sensing. Fifteen foot (405 cm) umbilical for remote thermostat mounting.
Optional automatic changeover heat/cool thermostat available.
• Standard 1600 watt electric heater delivers 5,600 BTUH heat capacity.
• Fan can be set to operate continuously for improved air circulation and ltration.
•150 cfm (255 m3/hr) for the ELA07 and 450 cfm (765 m3/hr) for ELA12 airow rate.
• Compressor hermetically sealed at factory for leakproof refrigerant ow and efcient operation.
• Black nish on supply air diverter conceals it in the gap between the false ceiling and interior
wall.
• Compressor and outer cabinet are mounted on shock absorbing rubber for added durability and
noise reduction.
• Long lasting copper tubing is fabricated with shock loops to strengthen the system’s vibration
resistance.
• Gas-ux brazed joints on the tubing to resist corrosion.
• Start circuit with start capacitor and relay makes starting easier on the compressor.
• All galvanized steel construction of the outer cabinet ensures corrosion resistance.
• Heavy-duty, galvanized steel drain pan is specially designed for corrosion-resistant durability.
• Freeze protection is provided to prevent evaporator freeze-up.
• 4-pin connector plugs into air conditioner for easy thermostat hookup.
• Field wiring accomplished simply and easily to lugs on Printed Circuit Board.
• Washable lter, drops into return air bonnet.
OPTIONAL ACCESSORIES
• Automatic Transformers, 240 Volt, 60 Cycle, 1 Phase to 115 Volt, 60 Cycle, 1 Phase.
• Automatic Thermostat - Programmable for 7-day operation; on-off, heat/cool
• Condensate Evaporator - 115V or 240V, complete with pan, lter, overow tube and connection
cables
• Overow Detection Device
For more information about the LiftAire models, contact:
Elevator Motors Corporation
80 Carolyn Blvd.
Farmingdale, NY 11735-1525
T: [phone]
F: [phone]
E-Mail: [email protected]
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Notes:
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