Sterling RF-30, RF-60, RF-90, RF-75 Dimensional Drawing Tubular 30 thru 90 Propeller Unit Heater

Table 1 - Performance and Dimensional Data - Tubular 30 thru 90 Propeller Unit Heater

Unit Size	30	45	60	75	90
PERFORMANCE DATA†
Input - BTU/Hr.	30,000	45,000	60,000	75,000	90,000
(kW)	(8.8)	(13.2)	(17.6)	(22.0)	(26.4)
Output - BTU/Hr.	24,300	36,450	48,600	60,750	72,900
(kW)	(7.1)	(10.7)	(14.2)	(17.8)	(21.4)
Thermal Efficiency (%)	81	81	81	81	81
Free Air Delivery - CFM	500	750	1,000	1,250	1,500
(cu. m/s)	(0.236)	(0.355)	(0.473)	(0.591)	(0.710)
Air Temperature Rise - Deg. F	45	45	45	45	45
(Deg. C)	(25)	(25)	(25)	(25)	(25)
Full Load Amps at 120V	3.0	3.0	3.7	3.7	4.8
MOTOR DATA: Motor HP	1/20	1/20	1/20	1/20	1/20
Motor (kW)	(0.04)	(0.04)	(0.04)	(0.04)	(0.04)
Motor Type	SP	SP	SP	SP	SP
R.P.M.	1650	1650	1050	1050	1050
Motor Amps @ 115V	1.9	1.9	2.6	2.6	2.6
DIMENSIONAL DATA - inches (mm)
“A” Jacket Height	12	12	17-3/4	17-3/4	17-3/4
	(305)	(305)	(451)	(451)	(451)
“B” Overall Height	13	13	18-3/4	18-3/4	18-3/4
	(330)	(330)	(476)	(476)	(476)
“C” Overall Depth	25-1/2	25-1/2	26-3/4	26-3/4	26-3/4
	(648)	(648)	(679)	(679)	(679)
“Center Line” Height of Flue*	7-1/4	7-1/4	10-1/2	10-1/2	10-1/2
	(184)	(184)	(267)	(267)	(267)
“Center Line” Electric Connection	10-1/4	10-1/4	16	16	16
	(260)	(260)	(406)	(406)	(406)
“F” Discharge Opening Height	10-1/2	10-1/2	16-1/4	16-1/4	16-1/4
	(267)	(267)	(413)	(413)	(413)
“G” Fan Diameter-in	10	10	16	16	16
Unit Weight - lbs.	62	68	87	93	95
(kgs)	(28)	(31)	(39)	(42)	(43)
Shipping Weight - lbs.	72	78	102	108	110
(kgs)	(33)	(35)	(46)	(49)	(50)

* For all installations, the flue collar is included with the unit and should be field installed per the instructions included with the unit.

†Ratings shown are for unit installations at elevations between 0 and 2,000 ft (0 to 610m). For unit installations in U.S.A. above 2,000 ft. (610m), the unit input must be derated 4% for each 1,000 ft. (305m) above sea level; refer to local codes, or in absence of local codes, refer to the latest edition of the National Fuel Gas Code, ANSI Standard Z223.1 (N.F.P.A. No. 54), (also refer to Table 6).

For installations in Canada, any reference to deration at altitudes in excess of 2,000 ft. (610m) are to be ignored. At altitudes of 2,000 ft. to 4,500 ft. (610 to 1372m), the unit must be derated to 90% of the normal altitude rating, and be so marked in accordance with the ETL certification.

DIMENSIONS .XXX STANDARD UNITS

DIMENSIONS IN PARENTHESIS (XXX) MILLIMETERS

Figure 2 - Dimensional Drawing – Tubular 30 thru 90 Propeller Unit Heater

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