Fig. 1 — roof curb details – Bryant 549B User Manual
Page 2
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2
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A minimum clearance to combustibles is not required around
ductwork on vertical discharge units. On horizontal dis-
charge units, a minimum clearance of 1 in. is required for the
first 12 in. of ductwork. Cabinet return-air static pressure (a
negative condition) shall not exceed 0.30 in. wg with econo-
mizer or 0.45 in. wg without economizer.
CONNECTOR PKG.
ACCY.
B
C
D ALT DRAIN HOLE
GAS
POWER
CONTROL
ACCESSORY POWER
CRBTMPWR001A01
2
′-8
7
/
16
″
[827]
1
′-10
15
/
16
″
[583]
1
3
/
4
″
[44.5]
3
/
4
″ [19] NPT
3
/
4
″ [19] NPT
1
/
2
″ NPT
[12.7]
1
/
2
″ NPT
[12.7]
CRBTMPWR002A01
1
1
/
4
″ [31.7]
CRBTMPWR003A01
1
/
2
″ [12.7] NPT
3
/
4
″ [19] NPT
1
/
2
″ NPT
[12.7]
CRBTMPWR004A01
3
/
4
″ [19] NPT
1
1
/
4
″ [31.7]
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels: 1-in. thick polyurethane foam, 1
3
/
4
lb
density.
3. Dimensions in [
] are in millimeters.
4. Roof curb: 16-gage steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance 4 ft on each side.
7.
Direction of airflow.
8. Connector packages CRBTMPWR001A01 and 2A01
are for thru-the-curb gas type. Packages
CRBTMPWR003A01 and 4A01 are for thru-the-bottom
type gas connections.
Fig. 1 — Roof Curb Details
ROOF CURB
ACCESSORY
“A”
UNIT
SIZE
549B
CRRFCURB003A01
1
′-2″ [356]
090-120
CRRFCURB004A01
2
′-0″ [610]