Figure 1a – Sterling QVEF User Manual
Page 4
4
DIMENSIONS .XXX STANDARD UNITS
DIMENSIONS IN PARENTHESIS (XXX) MILLIMETERS
Table 1 – Performance and Specifi cation Data – Power Vented Propeller Unit Heater
‡ Ratings shown are for unit installations
at elevations between 0 and 2,000 ft.
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 certifi cation.
LEGEND: SP = SHADED POLE
PSC = PERMANENT SPLIT
CAPACITOR
Figure 1A
Unit
Size
100 125 150 175 200 225 250 300 350 400
PERFORMANCE DATA ‡
Input
BTU/Hr
100,000 125,000 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000
(kW)
(29.3)
(36.6)
(43.9)
(51.2)
(58.6)
(65.9)
(73.2)
(87.8)
(102.5)
(117.1)
Output
BTU/Hr
80,000 100,000 120,000 140,000 160,000 180,000 200,000 240,000 280,000 320,000
(kW)
(23.4)
(29.3)
(35.1)
(41.0)
(46.9)
(52.7)
(58.6)
(70.3)
(82.0)
(93.7)
Thermal
Effi
ciency
(%)
80 80 80 80 80 80 80 80 80 80
Free
Air
Delivery
CFM
1,480 1,650 2,200 2,530 2,640 2,700 3,100 4,400 5,000 5,300
(cu. m/s)
(0.699)
(0.779)
(1.038)
(1.194)
(1.246)
(1.274)
(1.463)
(2.077)
(2.360)
(2.502)
Air
Temperature
Rise
Deg.
F
50 56 50 51 56 61 60 50 52 56
(Deg. C)
(28)
(31)
(28)
(28)
(31)
(34)
(33)
(28)
(29)
(31)
Outlet Velocity FPM
775
910
1,045
1,070
1,010
950
980
1,100
1,150
1,050
(m/s)
(3.94)
(4.62)
(5.31)
(5.44)
(5.13)
(4.83)
(4.98)
(5.59)
(5.84)
(5.33)
Full
Load
Amps
at
115V
5.2 7.2 7.8 9.2 9.2 9.2 9.2 12.5
15.0 15.0
MOTOR DATA :
Motor
HP 1/20
1/10 1/4 1/3 1/3 1/3 1/3 1/4 1/3 1/3
Motor (kW)
(0.037)
(0.075)
(0.186)
(0.249)
(0.249)
(0.249)
(0.249)
(0.186)
(0.249)
(0.249)
Motor Type
SP
SP
PSC
PSC
PSC
PSC
PSC
PSC
PSC
PSC
R.P.M.
1,050
1,050
1,140
1,140
1,140
1,140
1,140
1,140
1,140
1,140
Amps @ 115V
2.6
4.2
4.7
5.8
5.8
5.8
5.8
9.4
11.6
11.6
DIMENSIONAL DATA in. (mm)
“A”
Height
to
Top
of
Unit
31-1/4 31-1/4 36-1/4 36-1/4 36-1/4 36-1/4 36-1/4 36-1/4 36-1/4 36-1/4
(794) (794) (921) (921) (921) (921) (921) (921) (921) (921)
“B”
Width
of
Unit
17-7/8 20-5/8 20-5/8 23-3/8 26-1/8 28-7/8 31-5/8 37-1/8 42-5/8 48-1/8
(454) (524) (524) (594) (664) (733) (803) (943) (1083) (1222)
“C”
Height
to
Top
of
Hanger
34-1/8 34-1/8 39-1/8 39-1/8 39-1/8 39-1/8 39-1/8 39-1/8 39-1/8 39-1/8
(867) (867) (994) (994) (994) (994) (994) (994) (994) (994)
“D”
Depth
to
Rear
of
Housing 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2 37-1/2
(952) (952) (952) (952) (952) (952) (952) (952) (952) (952)
“E”
Hanging
Distance
Width 14-1/2 17-1/4 17-1/4 20 22-3/4 25-1/2 28-1/4 33-3/4 39-1/4 44-3/4
(368) (438) (438) (508) (578) (648) (718) (857) (997) (1137)
“F”
Discharge
Opening
Width 15-3/8 18-1/8 18-1/8 20-7/8 23-5/8 26-3/8 29-1/8 34-5/8 40-1/8 45-5/8
(391) (460) (460) (530) (600) (670) (740) (879) (1019) (1159)
“G”
Depth
to
Unit
Side
Jacket 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4 26-3/4
(679) (679) (679) (679) (679) (679) (679) (679) (679) (679)
“H”
Discharge
Opening
Height
18 18 18 18 18 18 18 18 18 18
(457) (457) (457) (457) (457) (457) (457) (457) (457) (457)
“J” to Centerline of Flue
5-7/8
7-1/4
7-1/4
8-5/8
10
11-1/4
12-3/4
15-1/2
18-1/4
21
(149) (184) (184) (219) (254) (286) (324) (394) (464) (533)
“K”
Depth
to
Centerline
of
Flue 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8 30-5/8
(778) (778) (778) (778) (778) (778) (778) (778) (778) (778)
“L”
Hanger
Location
16-1/4 16-3/4 16-3/8 16-3/8 16-3/8 16-3/4 16-3/4 16-3/4 16-3/4 16-3/4
(413) (425) (416) (416) (416) (425) (425) (425) (425) (425)
Flue
Size
Dia.-in.*
4 4 4 4 5 5 5 6 6 6
(Dia.-mm)
(102)
(102)
(102)
(102)
(127)
(127)
(127)
(152)
(152)
(152)
Fan
Diameter-in.
14 16 16 18 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 3/4
Gas Inlet-LP Gas-in.
1/2
1/2
1/2
1/2
1/2
1/2 OR 3/4
Approx.
Shipping
Wt
lb.
174 197 219 238 249 275 305 350 414 461
(kg)
(79)
(89)
(99)
(108)
(113)
(125)
(138)
(159)
(188)
(209)