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—4—
581A180 ONLY
FIELD
SUPPLIED
POWER EXHAUST/
BAROMETRIC RELIEF
(ACCESSORY ONLY)
POWER EXHAUST/
BAROMETRIC RELIEF
(ACCESSORY ONLY)
Fig. 4 — Base Unit Dimensions; 581A155 and 180
NOTES:
1. Refer to print for roof curb accessory dimensions.
2. Dimensions in ( ) are in millimeters.
3. Center of Gravity.
4. Direction of airflow.
5. Ductwork to be attached to accessory roof curb only.
6. Minimum clearance:
• Rear: 7 ft-0 in. (2134) for coil removal. This dimension can be reduced
to 4 ft-0 in. (1219) if conditions permit coil removal from the top.
• 4 ft-0 in. (1219) to combustible surfaces, all four sides (includes between
units).
• Left side: 4 ft-0 in.(1219) for proper condenser coil airflow.
• Front: 4 ft-0 in. (1219) for control box access.
• Right side: 4 ft-0 in. (1219) for proper operation of damper and power
exhaust if so equipped.
• Top: 6 ft-0 in. (1829) to assure proper condenser fan operation.
• Bottom: 14 in. (356) to combustible surfaces (when not using curb).
• Control box side: 3 ft-0 in. (914) to ungrounded surfaces, non-combustible.
• Control box side: 3 ft-6 in. (1067) to block or concrete walls, or other
grounded surfaces.
• Local codes or jurisdiction may prevail.
7. With the exception of clearance for the condenser coil and the damper/
power exhaust as stated in Note no. 6, a removable fence or barricade
requires no clearance.
8. Dimensions are from outside of corner post. Allow 0 ft-
5
/
16
in. (8) on each
side for top cover drip edge.
UNIT
581A
STD UNIT
WEIGHT
ECONO-
MIZER
WEIGHT
CORNER
A
CORNER
B
CORNER
C
CORNER
D
DIM A DIM B DIM C
Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm ft-in. mm
155 1725 782 110 50 427 194 390 177 438 199 470 213 3-3 991 3-5 1051 1-10 559
180 1800 816 110 50 417 189 399 181 481 218 503 228 3-2 961 3-6 1070 1-10 559