Sterling QVES - Manual (Page 5)

5
PERFORMANCE DATA
Ratings are shown for unit installations at elevations between 0 and 2,000 ft. (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 references to deration at altitudes in excess of 2,000 ft. (610m) are to be ignored.
At altitudes of 2,000 to 4,500 ft. (610 to 1372m), the unit must be derated 90% of the normal altitude rating, and be so marked in
accordance with the ETL certifi cation.
INPUT OUTPUT
(MAX) (MIN) MIN. Temp. Rise P.D. in. MAX. Temp. Rise P.D. in.
UNIT MBH MBH MBH CFM Deg. F. of Water CFM Deg. F. of Water
SIZE (kW) (kW) (kW) (cu. m/s) (Deg. C.) (kPa) (cu. m/s) (Deg. C.) (Pascals)
100 100 50 80 929 80 0.12 2469 30 0.90
(29.3) (14.6) (23.4) (0.438) (44) (0.03) (1.165) (17) (0.22)
125 125 62.5 100 1157 80 0.13 3086 30 0.80
(36.6) (18.3) (29.3) (0.546) (44) (0.03) (1.457) (17) (0.20)
150 150 75 120 1389 80 0.15 3704 30 0.75
(43.9) (22.0) (35.1) (0.656) (44) (0.04) (1.748) (17) (0.19)
175 175 87.5 140 1620 80 0.14 4321 30 0.75
(51.2) (25.6) (41.0) (0.765) (44) (0.03) (2.040) (17) (0.19)
200 200 100 160 1852 80 0.14 4938 30 0.75
(58.6) (29.3) (46.9) (0.874) (44) (0.03) (2.331) (17) (0.19)
225 225 112.5 180 2083 80 0.14 5556 30 0.75
(65.9) (32.9) (52.7) (0.983) (44) (0.03) (2.622) (17) (0.19)
250 250 125 200 2315 80 0.14 6173 30 0.80
(73.2) (36.6) (58.6) (1.093) (44) (0.03) (2.914) (17) (0.20)
300 300 150 240 2778 80 0.13 7407 30 0.90
(87.8) (43.9) (70.3) (1.311) (44) (0.03) (3.496) (17) (0.22)
350 350 175 280 3241 80 0.13 8642 30 0.90
(102.5) (51.2) (82.0) (1.530) (44) (0.03) (4.079) (17) (0.22)
400 400 200 320 3704 80 0.14 9877 30 0.90
(117.1) (58.6) (93.7) (1.748) (44) (0.03) (4.662) (17) (0.22)
Table 2
TEMPERATURE RISE AND PRESSURE DROP GRAPH