278410-UIM-K-1010
SINGLE PIECE
NON-VARIABLE SPEED AIR HANDLERS
MODELS: AHP SERIES
INSTALLATION MANUAL
ISO 9001
Certified Quality
Management System
LIST OF SECTIONS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
ELECTRIC HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 7
LOW VOLTAGE CONTROL CONNECTIONS . . . . . . . . . . . . . . . . . .8
REQUIRED CONTROL SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
LINE POWER CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
BLOWER SPEED CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . 10
UNIT DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
LIST OF FIGURES
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Return Duct Attachment & Component Location . . . . . . . . . . . . . . . . . 3
Dimensions & Duct Connection Dimensions . . . . . . . . . . . . . . . . . . . . 4
Condensate Deflector on Vertical Drain Pan . . . . . . . . . . . . . . . . . . . . 4
Condensate Deflector on Horizontal Drain Pan Edge . . . . . . . . . . . . . 5
S-Clip Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Duck Work Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Horizontal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Proper Bulb Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Line Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Blower Speed Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cooling Models with Electric Heat Wiring . . . . . . . . . . . . . . . . . . . . . 16
Single-Stage Cooling Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring Diagram - AHP18-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Wiring Diagram - AHP60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
LIST OF TABLES
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Low Voltage Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Low Fan Control Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Blower Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heat Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Physical and Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Conversion Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical Data - Cooling Only (60 Hz) . . . . . . . . . . . . . . . . . . . . . . . . 11
Electrical Data - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electrical Data - (For Single Source Power Supply) -
Copper Wire - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Data - (For Multi-Source Power Supply) -
Copper Wire - 208/230-1-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Data - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Data - (For Multi-Source Power Supply) -
Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Data - (For Single Source Power Supply) -
Copper Wire - 208/230-3-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Air Flow Data - 60 Hz Models - 208 Volt . . . . . . . . . . . . . . . . . . . . . . 15
Air Flow Data - 60 Hz Models - 230 Volt . . . . . . . . . . . . . . . . . . . . . . 16
SECTION I: GENERAL
The AHP single piece 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, easy to install drain connections and electric
heaters all combine to make the installation easy, and minimize installa-
tion 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.
