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INSTALLATION MANUAL
MODULAR
STANDARD ECM AIR HANDLERS
MODELS: MX
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRIC HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 5
LOW VOLTAGE CONTROL CONNECTIONS . . . . . . . . . . . . . . . . . . 6
REQUIRED CONTROL SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Installation with MC or FC Evaporator Coil . . . . . . . . . . . . . . . 3
Coil and Air Handler Attachment Details . . . . . . . . . . . . . . . . . . . . . . . 3
Gasket Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Duck Work Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Low Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Low Fan Control Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Blower Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Heat Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Physical and Electrical Data - Cooling Only (60 Hz) . . . . . . . . . . . . . . 9
Electrical Data - Cooling Only (60 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . 9
Conversion Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electrical Data - 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . 9
SECTION I: GENERAL
This modular air handler provides the flexibility for installation in any
upflow, downflow, or horizontal application. These versatile models may
be used for cooling or heat pump operation with or without electric heat.
A BRAND LABEL (available from Distribution) may be applied to the
center of the blower access panel.
The unit can be positioned for bottom return air in the upflow position,
top return air in the downflow position, and right or left return in the hor-
izontal position.
Top and side power wiring and control wiring, accessible screw termi-
nals for control wiring and easy to install electric heaters all combine to
make the installation easy, and minimize installation cost.
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury. It is also used to
alert against unsafe practices and hazards involving only property dam-
age.
LIST OF SECTIONS
LINE POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
BLOWER SPEED CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 8
UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
LIST OF FIGURES
Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Blower Speed Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cooling Models with Electric Heat Wiring . . . . . . . . . . . . . . . . . . . . . 13
Single-Stage Heat Pump Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Two-Stage Heat Pump Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Wiring Diagram - MX12-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Wiring Diagram - MX20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
LIST OF TABLES
Copper Wire 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Copper Wire 1 Ø - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Data - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Air Flow Data - 60 Hz Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual for assis-
tance or for additional information, consult a qualified contractor,
installer or service agency.
This product must be installed in strict compliance with the installation
instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical codes.
FIRE OR ELECTRICAL HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage.
A fire or electrical hazard may result causing property damage, per-
sonal injury or loss of life.
ISO 9001
Certified Quality
Management System
819682-UIM-A-0212
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Table of Contents
Related Manuals for York MX Series
Summary of Contents for York MX Series
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Page 1: Table Of Contents
INSTALLATION MANUAL MODULAR STANDARD ECM AIR HANDLERS ISO 9001 Certified Quality MODELS: MX Management System LIST OF SECTIONS GENERAL ..........1 LINE POWER CONNECTIONS . -
Page 2: Safety
819682-UIM-A-0212 Install this air handler only in a location and position as specified in Also check to be sure all accessories such as heater kits, suspension SECTION III of these instructions. kits, and coils are available. Installation of these accessories or field conversion of the unit should be accomplished before setting the unit in Always install the air handler to operate within the air handler’s place or connecting any wiring, electric heat, ducts or piping. -
Page 3: Typical Installation With Mc Or Fc Evaporator Coil
819682-UIM-A-0212 DOWNFLOW UPFLOW HORIZONTAL RIGHT HORIZONTAL LEFT Typical Installation with MC or FC Evaporator Coil (MC required for horizontal applications) FIGURE 1: DOWNFLOW AND HORIZONTAL CONVERSION Secure base of air handler to top of coil using screws. These air handler units are supplied ready to be installed in a upflow, Locate 2”... -
Page 4: Gasket Location
819682-UIM-A-0212 Gasket Location FIGURE 3: 10-3/8” TOP OUTLET DIMENSIONS CIRCUIT BREAKER PANEL 21-1/2” 20-1/2” BOTTOM INLET DIMENSIONS Dimensions & Duct Connection Dimensions FIGURE 4: Dimensions TABLE 1: Dimensions Wiring Knockouts Models Height Width Power Control 17-1/2 16-1/2 14-19/32 7/8” (1/2”) 24-1/2 23-1/2 21-19/32... -
Page 5: Electric Heater Installation
819682-UIM-A-0212 DUCT WORK TRANSITION HORIZONTAL SUSPENSION Duct work that is not designed to match the supply air opening can For suspension of these units in horizontal applications, it is recom- cause turbulence inside the plenum box. This turbulence can change mended to use angle steel support brackets with threaded rods, sup- the air flow patterns across the heat kit limit switch. -
Page 6: Low Voltage Control Connections
819682-UIM-A-0212 SECTION V: LOW VOLTAGE CONTROL CONNECTIONS NOTICE The 24 volt power supply is provided by an internally wired low voltage All wiring must comply with local and national electrical code require- transformer which is standard on all models, However, if the unit is con- ments. -
Page 7: Low Fan Control Inputs
819682-UIM-A-0212 External Relay Outputs HEAT OUTPUT AND LIMIT CONNECTIONS The control includes three outputs to drive external relays having The control is connected to the heater relays and limit switch using 24 VAC coils. The outputs have a maximum rating of 1.0 Amp pilot the 6-pin connector. -
Page 8: Line Power Connections
819682-UIM-A-0212 SECTION VII: LINE POWER If aluminum conductors are present, all applicable local and national CONNECTIONS codes must be followed when converting from aluminum to copper con- ductors prior to connection to the air handler. Power may be brought into the unit through the supply air end of the If wire other than uncoated (non-plated), 75°... -
Page 9: Physical And Electrical Data - Cooling Only (60 Hz)
819682-UIM-A-0212 SECTION IX: UNIT DATA Physical and Electrical Data - Cooling Only (60 Hz) TABLE 7: Models MX12BN21 MX12DN21 MX16CN21 MX20DN21 Blower - Diameter x Width 10 x 9 10 x 10 10 x 10 10 x 10 Motor Nominal RPM 1050 1050 1050... -
Page 10: Electrical Data - (For Single Source Power Supply) - Copper Wire 1 Ø - 208/230-1-60
819682-UIM-A-0212 Electrical Data - (For Single Source Power Supply) - Copper Wire 1 Ø - 208/230-1-60 TABLE 11: Field Wiring Heater Heater Models Amps Min. Circuit Ampacity 75°C Wire Size - AWG Max. O.C.P. Amps/Type Models* 240V 208V 230V 208V 230V 208V 230V... -
Page 11: Electrical Data - 208/230-3-60
819682-UIM-A-0212 Electrical Data - 208/230-3-60 TABLE 13: KW Staging Total Heat Min. Heat Kit - Max. Models Speed W1 Only W2 Only W1 + W2 Three Phase Static 208V 230V 208V 230V 208V 230V 208V 230V 208V 230V 4HK06501025 Med/#3 24.6 32.8 MX12B... -
Page 12: Air Flow Data - 60 Hz Models
819682-UIM-A-0212 Air Flow Data - 60 Hz Models TABLE 16: 208 Volt Blower m³/min @ External Static Pressure - Pascal @ External Static Pressure - IWC Models Motor 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 0.025 0.050 0.075 0.100 0.125 0.150 0.175 0.200 0.225 0.250 Speed Hi/#1 1234 1212 1178 1145 1079 1043 995 911 623 371 34.54 33.94 33.00 32.05 30.20 29.20 27.87 25.50 17.44 10.40... -
Page 13: Cooling Models With Electric Heat Wiring
819682-UIM-A-0212 Air Handler Control Wiring Air Handler Control Wiring Typical A/C - Cooling only Applications Typical A/C with Electric Heat Applications AIR HANDLER AIR HANDLER THERMOSTAT THERMOSTAT 1 - STAGE 1 - STAGE BOARD BOARD AIR CONDITIONING AIR CONDITIONING Y / Y2 Y / Y2 HUMIDISTAT HUMIDISTAT... -
Page 14: Maintenance
819682-UIM-A-0212 CONTROL WIRING - Air Handler & UPG HP Systems Two Stage H/P with York Guard VI Board & Copeland “Ultra Tech” Conventional Application - Not Hot Heat Pump AIR HANDLER 2 - STAGE SCROLL THERMOSTAT HEAT PUMP BOARD Y / Y2... -
Page 15: Wiring Diagram
819682-UIM-A-0212 SECTION XI: WIRING DIAGRAM Wiring Diagram - MX12-16 FIGURE 13: Johnson Controls Unitary Products... -
Page 16: Wiring Diagram - Mx20
Wiring Diagram - MX20 FIGURE 14: Subject to change without notice. Published in U.S.A. 819682-UIM-A-0212 Copyright © 2012 by Johnson Controls, Inc. All rights reserved. Supersedes: 628582-UIM-A-0111 Johnson Controls Unitary Products 5005 York Drive Norman, OK 73069...
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