RTA-SH Series Roof Exhausters

Details

RTA-SH model suitable for normal use in clean, dry air with a maximum ambient temperature of 93º C (200º F). RTA-SH is designed to exhaust smoke in the event of a fire. It is in compliance with smoke control systems requirements of 500ºF for 4 hours and 1000ºF for 15 minutes. Two spring loaded arms are released when temperatures reach above 165ºF to force open the dampers.

TEFC, ball bearing motor is out of air stream and is accessible from the roof.
Galvanized steel wind-band and rain-proof butterfly dampers.
Heavy duty pulleys and belts out of air stream.

High Heat Features.

Heavy gauge steel prop.
High heat cast iron pillow block bearings (out of air stream), complete with external grease fittings.
500° F for 4 hours and 1000° F for 15 minutes.
Arms rated for snow load of 10 lbs/ft2.

Specifications

View table fullscreen

TO ORDER RTWA MODELS REPLACE RTA WITH RTWA WHEN ORDERING FROM TABLE BELOW.
		MODEL #	FAN RPM	H.P	0" S.P.		1/4" S.P.		1/2" S.P.		3/4" S.P.		1" S.P.		Min. CFM	dBA @ 10Ft.
		SINGLE PHASE	FAN RPM	H.P	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP	CFM	BHP	Min. CFM	dBA @ 10Ft.
BLADE DIAMETER	42"	RTA42SHT10200	770	2	19920	1.65	15080	1.80	-	-	-	-	-	-	14000	61
		RTA42SHT10300	895	3	22840	2.60	19620	2.80	14940	2.9	-	-	-	-	14000	65
		RTA42SHT10500	1005	5	25980	3.66	23230	3.89	19980	4.01	-	-	-	-	14000	67
		RTA42SHT10750	1205	7.5	31520	6.26	29530	6.54	27040	6.78	24230	6.89	20270	7.07	14000	72
		RTA42SHT11000	1335	10	35170	8.49	33410	8.76	31270	9.08	29020	9.32	26230	9.39	14000	75
	48"	RTA48SHT10300	745	3	24330	2.55	20510	2.76	-	-	-	-	-	-	18000	63
		RTA48SHT10500	885	5	29440	4.10	26370	4.46	22380	4.72	-	-	-	-	18000	67
		RTA48SHT10750	1005	7.5	33850	5.93	31080	6.47	28330	6.81	24740	6.96	-	-	18000	71
		RTA48SHT11000	1105	10	37270	7.89	34760	8.54	32520	8.99	29760	9.11	26140	9.29	18000	73
		--	1265	15	42900	11.70	40860	12.30	38790	13.13	36270	13.54	34290	13.66	18000	76
	54"	RTA54SHT10500	710	5	37130	4.26	31680	4.67	-	-	-	-	-	-	23000	68
		RTA54SHT10750	810	7.5	42890	6.20	38660	6.85	33210	6.99	25390	6.87	-	-	23000	71
		RTA54SHT11000	905	10	48450	8.54	44640	9.41	40140	9.73	34980	9.78	27220	9.53	23000	74
		--	1025	15	55520	12.10	52110	12.92	48280	13.81	44310	14.17	39660	14.22	23000	78
For three phase motors, substitute '*' with 'M' for 230/460 volt (if 208V required please specify) or 'P' for 575 volt. Fan blades tested in accordance with AMCA standard 210, figure 12. dBA ratings shown are measured at 0" static pressure and should be used as a guideline only.

Dimensions


MODEL #	A Dia.	B Dia.	C Sq.	D	E	F	G
RTA-SH42	42 3/8"	48 5/8"	48"	2 1/2	2"	27"	27"
RTA-SH48	48 1/2"	54 5/8"	54"	2 1/2	2"	30"	31"
RTA-SH54	54 1/2"	60 5/8"	60"	2 1/2	2"	36"	40"

Options

Roof Curbs.
Disconnect switch.

RTA-SH Series Roof Exhausters - Belt Drive