Bryant FH4B manual Smart Heat, Estimated Sound Power Level dBA

SMART HEAT

				INTERNAL
HEATER	KW		STAGES	CIRCUIT	FAN COIL SIZE	HEATING CAP. **
PART NO.	@ 240V	VOLTS/PHASE	(KW OPERATING)	PROTECTION	USED WITH	@ 230V
KFCEH0101H10	10	230/1	3, 6, 9	None‡	001, 002	31,400
KFCEH0201H15	15	230/1	3, 8, 11, 15	Fuse	001–003	47,100
KFCEH0301H20	20	230/1	5, 10, 15, 20	Fuse	002–004	62,800

* Field convertible to 1 phase.

†KFAEH2501N09 is field convertible to 3 phase.

‡Single point wiring kit required for these heaters in Canada. ** Blower motor heat not included.

When using units with 20-, 24-, and 30-kw electric heaters, maintain a 1-in. clearance from combustible materials to discharge plenum and ductwork, and maintain a distance of 36 in. from the unit. Use an accessory downflow base to maintain proper clearance on downflow installations.

Use flexible connectors between ductwork and unit to prevent transmission of vibration. When electric heater is installed, use heat resistant material for flexible connector between ductwork and unit at discharge connection. Ductwork passing through unconditioned space must be insulated and covered with vapor barrier.

ESTIMATED SOUND POWER LEVEL (dBA)

	CONDITIONS				OCTAVE BAND CENTER FREQUENCY*
UNIT		Ext Static
SIZE	CFM	Pressure	63	125	250	500	1000	2000	4000
FH4-001	800	0.25	66.0	62.0	58.0	55.0	53.0	51.0	47.0
FH4-002	1200	0.25	67.8	63.8	59.8	56.8	54.8	52.8	48.8
FH4-003	1600	0.25	69.0	65.0	61.0	58.0	56.0	54.0	50.0
FH4-004	2000	0.25	70.0	66.0	62.0	59.0	57.0	55.0	51.0

*Estimated sound power levels have been derived using the method described in the 1987 ASHRAE HVAC Systems & Applications Handbook, Chapter 52, p. 52.7

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