INSTALLATION MANUAL
MODULAR
MODELS: MA
ISO 9001
Certified Quality
Management System
LIST OF SECTIONS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ELECTRIC HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 5 LOW VOLTAGE CONTROL CONNECTIONS . . . . . . . . . . . . . . . . . . 5
REQUIRED CONTROL
LIST OF FIGURES
Typical Installation with MC or FC Evaporator Coil . . . . . . . . . . . . . . . 3 Coil and Air Handler Attachment Details . . . . . . . . . . . . . . . . . . . . . . . 3 Dimensions & Duct Connection Dimensions . . . . . . . . . . . . . . . . . . . . 4 Typical Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
460V - Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Blower Speed Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 460V - Blower Speed Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Cooling Models with Electric Heat Wiring . . . . . . . . . . . . . . . . . . . . . .15
LIST OF TABLES
Dimensions | . 4 | Electrical Data - (For Single Source Power Supply) - |
|
Low Voltage Connections | . 6 | Copper Wire 1 Ø - | 11 |
Fault Codes | . 6 | Electrical Data - 3 Ø - | 11 |
Low Fan Control Inputs | . 7 | Electrical Data - (For |
|
Blower Delays | . 7 | Copper Wire 3 Ø - | 12 |
Heat Relays | . 7 | Electrical Data - (For Single Source Power Supply) - |
|
Physical and Electrical Data | . 9 | Copper Wire 3 Ø - | 12 |
Electrical Data - Cooling Only (60 Hz) - 208/230 | . 9 | Electrical Data - | 12 |
Electrical Data - Cooling Only (60 Hz) - 460 | . 9 | Electrical Data - (For Single Source Power Supply) - |
|
Conversion Table | . 9 | Copper Wire 3 Ø - | 12 |
Electrical Data - 1 Ø - | 10 | Air Flow Data - 60 Hz Models (230 & 460 Volt) | 13 |
Electrical Data - (For |
| Air Flow Data - 60 Hz Models (208 Volt) | 14 |
Copper Wire 1 Ø - | 10 |
|
|
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.
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 mainte- nance can cause injury or property damage. Refer to this manual for assistance or for additional information, consult a qualified con- tractor, installer or service agency.
This product must be installed in strict compliance with the installa- tion instructions and any applicable local, state, and national codes including, but not limited to building, electrical, and mechanical codes.
