Specifications
11
BASE UNIT DIMENSIONS
UNIT
551B
STD UNIT
WEIGHT
DURABLADE
ECONOMIZER
WEIGHT
ECONOMI$ER
WEIGHT
CORNER
WEIGHT
(A)
CORNER
WEIGHT
(B)
CORNER
WEIGHT
(C)
CORNER
WEIGHT
(D)
Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg
036
435 197 34 15.4 47 21.3 124 56.2 106 48.1 95 43.1 110 49.9
048
445 202 34 15.4 47 21.3 127 57.6 108 49.0 97 44.0 113 51.3
060
465 211 34 15.4 47 21.3 133 60.3 113 51.3 101 45.8 118 53.5
072
520 236 34 15.4 47 21.3 149 67.6 127 57.6 112 50.8 132 59.9
A
1
3
/
8
″
Dia. [35] Field Power Supply Hole
B
2
″
Dia. [51] Power Supply Knockout
C
1
3
/
4
″
Dia. [44] Charging Port Hole
D
7
/
8
″
Dia. [22] Field Control Wiring Hole
E
3
/
4
″
— 14 NPT Condensate Drain
F
2
1
/
2
″
Dia. [64] Power Supply Knockout
NOTES:
1. Dimensions in [ ] are in millimeters.
2. Center of gravity.
3. Direction of airflow.
4. Ductwork to be attached to accessory roof curb only.
5. Minimum clearance (local codes or jurisdiction may prevail):
a. Bottom to combustible surfaces (when not using curb) 0 inches, on horizontal discharge units with
electric heat 1 in. clearance to ductwork for 1 ft.
b. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater clear-
ance is optional.
c. Overhead, 60 in. to assure proper condenser fan operation.
d. Between units, control box side, 42 in. per NEC (National Electrical Code).
e. Between unit and ungrounded surfaces, control box side, 36 in. per NEC.
f. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in. per NEC.
g. Horizontal supply and return end, 0 inches.
6. With the exception of the clearance for the condenser coil as stated in Note 5b, a removable fence or bar-
ricade requires no clearance.
7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material.
8. The vertical center of gravity is 1
′
-6
1
/
2
″
[470] up from the bottom of the base rail.
BOTTOM POWER CHART, THESE HOLES REQ’D FOR USE
WITH ACCESSORY PACKAGES — CRBTMPWR001A00 (
1
/
2
″
,
3
/
4
″
)
OR CRBTMPWR002A00 (
1
/
2
″
, 1
1
/
4
″
)
*Select either
3
/
4
″
or 1
1
/
4
″
for power, depending on wire size.
THREADED
CONDUIT SIZE
WIRE USE
REQ’D HOLE
SIZES (Max.)
1
/
2
″
3
/
4
″
1
1
/
4
″
24 V
Power*
Power*
7
/
8
″
[22.2]
1
1
/
8
″
[28.4]
1
3
/
4
″
[44.4]
551B036-072