Sterling TF-350, TF-400, TF-150, TF-300, TF-200 Dimensional Drawing Tubular Propeller Unit Heater

Table 1 - Performance and Dimensional Data - Tubular Propeller Unit Heater

Unit Size	100	125	150	175	200	250	300	350	400
PERFORMANCE DATA†
Input - BTU/Hr.	100,000	125,000	150,000	175,000	200,000	250,000	300,000	350,000	400,000
(kW)	(29.3)	(36.6)	(43.9)	(51.2)	(58.6)	(73.2)	(87.8)	(102.5)	(117.1)
Output - BTU/Hr.	81,000	101,250	121,500	141,750	162,000	202,500	243,000	283,500	324,000
(kW)	(23.7)	(29.6)	(35.6)	(41.5)	(47.5)	(59.3)	(71.2)	(83.0)	(95.0)
Thermal Efficiency (%)	81	81	81	81	81	81	81	81	81
Free Air Delivery - CFM	1,600	2,200	2,400	2,850	3,200	3,450	5,000	5,600	5,800
(cu. m/s)	(0.756)	(1.039)	(1.133)	(1.346)	(1.511)	(1.629)	(2.361)	(2.644)	(2.738)
Air Temperature Rise - Deg. F	47	42	47	46	47	54	45	47	51
(Deg. C)	(26)	(23)	(26)	(26)	(26)	(30)	(24)	(26)	(28)
Full Load Amps at 120V	5.3	5.8	5.8	8.0	8.0	8.0	11.3	13.5	13.5
MOTOR DATA: Motor HP (Qty.)	1/10	1/4	1/4	1/3	1/3	1/3	(2) 1/4	(2) 1/3	(2) 1/3
Motor kW	(0.080)	(0.19)	(0.19)	(0.25)	(0.25)	(0.25)	(0.19)	(0.25)	(0.25)
Motor Type	SP	PSC	PSC	PSC	PSC	PSC	PSC	PSC	PSC
R.P.M.	1,050	1,140	1,140	1,140	1,140	1,140	1,140	1,140	1,140
Amps @ 115V	4.2	4.7	4.7	5.8	5.8	5.8	9.4	11.6	11.6
DIMENSIONAL DATA - inches (mm)
“A” Overall Height to Top of Flue	33-3/4	33-3/4	33-3/4	33-3/4	33-3/4	33-3/4	34	34	34
	(857)	(857)	(857)	(857)	(857)	(857)	(864)	(864)	(864)
“B” Jacket Width of Unit	20-3/4	20-3/4	20-3/4	32-3/4	32-3/4	32-3/4	50-3/4	50-3/4	50-3/4
	(527)	(527)	(527)	(831)	(831)	(831)	(1289)	(1289)	(1289)
“C” Width to CL Flue	13-3/8	13-3/8	13-3/8	19-3/8	19-3/8	19-3/8	28-3/8	28-3/8	28-3/8
	(340)	(340)	(340)	(492)	(492)	(492)	(721)	(721)	(721)
“D” Depth to Rear of Housing	11	11	11	11	11	11	12-1/4	12-1/4	12-1/4
	(279)	(279)	(279)	(279)	(279)	(279)	(311)	(311)	(311)
“E” Hanging Distance Width	18-5/8	18-5/8	18-5/8	30-5/8	30-5/8	30-5/8	48-5/8	48-5/8	48-5/8
	(473)	(473)	(473)	(778)	(778)	(778)	(1235)	(1235)	(1235)
“F” Discharge Opening Width	18-3/4	18-3/4	18-3/4	30-3/4	30-3/4	30-3/4	48-3/4	48-3/4	48-3/4
	(476)	(476)	(476)	(781)	(781)	(781)	(1238)	(1238)	(1238)
“G” Depth to CL Flue	4-3/4	4-3/4	4-3/4	4-3/4	4-3/4	4-3/4	5-1/8	5-1/8	5-1/8
	(121)	(121)	(121)	(121)	(121)	(121)	(130)	(130)	(130)
“H” Discharge Opening Height	24-1/2	24-1/2	24-1/2	24-1/2	24-1/2	24-1/2	24-1/2	24-1/2	24-1/2
	(622)	(622)	(622)	(622)	(622)	(622)	(622)	(622)	(622)
“L” Overall Unit Width	25-1/4	25-1/4	25-1/4	37-1/4	37-1/4	37-1/4	55-1/4	55-1/4	55-1/4
	(641)	(641)	(641)	(946)	(946)	(946)	(1403)	(1403)	(1403)
*Flue Size Diameter - in.	5	5	5	5	5	5	6	6	6
(Dia.-mm)	(127)	(127)	(127)	(127)	(127)	(127)	(152)	(152)	(152)
Fan Diameter - in. (Qty.)	16	16	16	18	18	18	(2) 16	(2) 18	(2) 18
Gas Inlet-Natural Gas (in.)	1/2	1/2	1/2	1/2	1/2	3/4	3/4	3/4	3/4
Gas Inlet- LP Gas (in.)	1/2	1/2	1/2	1/2	1/2	1/2 OR 3/4	1/2 OR 3/4	1/2 OR 3/4	1/2 OR 3/4
Approximate Unit Weight - lbs.	133	145	155	191	201	211	307	321	335
(kg)	(60)	(66)	(70)	(87)	(91)	(96)	(139)	(145)	(152)
Approximate Ship Weight - lbs.	173	185	195	241	251	261	367	381	395
(kg)	(78)	(84)	(88)	(109)	(114)	(118)	(166)	(173)	(179)

* 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).

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.

1-3/8"	E
(35)

D

32-1/2"

L

(Hanging)		(Hanging)
			Flue *
	C

Electrical Control Panel

D4617
	Rear View
D4617

11-5/8" (826)

G (295) (Hanging)

Gas Valve

Side View

B

F

(Discharge Opening)

Front View

H
(Discharge		A
Opening)
	33"

1" (25)

DIMENSIONS .XXX STANDARD UNITS

DIMENSIONS IN PARENTHESIS (XXX) MILLIMETERS

Figure 2 - Dimensional Drawing – Tubular Propeller Unit Heater

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