TECHNICAL SUPPORT MANUAL
Cased Horizontal Duct Coils
EHD4X, EHD2X
Safety Labeling and Signal Words
DANGER, WARNING, CAUTION, and
NOTE
The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of haz-
ard seriousness. The signal word DANGER is only
used on product labels to signify an immediate hazard. The signal words WARNING, CAUTION, and
NOTE will be used on product labels and throughout this manual and other manuals that may apply
to the product.
DANGER − Immediate hazards which will result in
severe personal injury or death.
WARNING − Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION − Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE − Used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
!
The signal word CAUTION is used throughout this
manual in the following manner:
!
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
WARNING
WARNING
CAUTION
TABLE OF CONTENTS
Exploded Drawing 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EHD4X Parts List 3 − 4. . . . . . . . . . . . . . . . . . . . . . . . . . .
EHD2X Parts List 5 − 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Airflow vs. Static Pressure Chart 7. . . . . . . . . . . . . . . . .
Model Number Identification 8. . . . . . . . . . . . . . . . . . . . .
R−410A Quick Reference Guide 9. . . . . . . . . . . . . . . . . .
!
ELECTRICAL SHOCK HAZARD
Failure to turn off electric power could result in
personal injury or death.
Before installing or servicing system, turn off
main power to the system. There may be more than
one disconnect switch, including accessory heater(s).
WARNING
Specifications subject to change without notice.
484 04 5500 00 February 2006
TECHNICAL SUPPORT MANUAL Cased Horizontal Duct Coils: EHD4X, EHD2X
Casing,
NOTE: This illustration is for
reference only. Your unit may
differ in appearance or may not
include all components shown.
To p
B
Panel,
Rear End
G
Cover,
Front
Access
J
Panel,
Left Side
E
K
Drain
Cover
H
Tubing
Cover
Coil, Slab
Assembly
1
N
Top,
Pan
Bottom,
P
Pan
Casing,
C
Bottom
Panel,
Right
F
Side
To p
Baffle
A
Support, Coil,
Hairpin End
M
Access
5
Fitting
TXV
4
Distributor
3
Distributor
6
Assembly
Suction
2
Support, Coil,
Return Bend
End
L
Drain Plug
Header
Pan,
7
Condensate
D
Specifications subject to change without notice.
2 484 04 5500 00
TECHNICAL SUPPORT MANUAL Cased Horizontal Duct Coils: EHD4X, EHD2X
EHD4X24 − EHD4X60 (R−410A) SERIES PARTS LIST
KEY
EHD4X24AA1
EHD4X30AA1
EHD4X36AA1
EHD4X42AA1
EHD4X48AA1
NO.
DESCRIPTION PART NO.
EHD4X24AAT1
EHD4X30AAT1
EHD4X36AAT1
EHD4X42AAT1
EHD4X60AA1
EHD4X48AAT1
1 Evap. Coil Assy 1173397 1
1 1173601 − 1
1 1173398 − − 1
1 1173602 − − − 1
1 1173399 − − − − 1
1 1173603 − − − − − 1
1 1173400 − − − − − − 1
1 1173604 − − − − − − − 1
1 1173401 − − − − − − − − 1
1 1173605 − − − − − − − − − 1
1 1173402 − − − − − − − − − − 1
1 1173605 − − − − − − − − − − − 1
2 Suction Header Asy. 1173345 1 1
2 1173346 − − 1 1
2 1173348 − − − − 1 1
2 1172249 − − − − − − 1 1
2 1173350 − − − − − − − − 1 1 1 1
3 Distributor 1173094 1 1 1 1
3 1173093 − − − − 1 1 1 1 1 1 1 1
4 Thermo Expansion Valve (TXV) 1173387 1 1 1 1
4 1173399 − − − − 1 1
4 1173403 − − − − − − 1 1
4 1173391 − − − − − − − − 1 1 1 1
5 Access Fitting 1171507 1 1 1 1 1 1 1 1 1 1 1 1
6 Distributor Assembly 1173095 1 1 1 1
6 1173139 − − − − 1 1 1 1
6 1173303 − − − − − − − − 1 1 1 1
7 Condensate Pan 1173305 1 1 1 1
7 1173306 − − − − 1 1 1 1 1 1
7 1173307 − − − − − − − − − − 1 1
A Top Baffle 1173340 1 1
A 1173341 − − 1 1
A 1173342 − − − − 1 1
A 1173343 − − − − − − 1 1 1 1
A 1173344 − − − − − − − − − − 1 1
B Casing Top 1173315 1 1 1 1
B 1173316 − − − − 1 1 1 1
B 1173317 − − − − − − − − 1 1
− continued on next page −
Specifications subject to change without notice.
484 04 5500 00 3
EHD4X60AAT1