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286
Flow Rate (GPM)
Pressure Drop vs. Flow (Includes Secondary Piping)
Pressure Drop (Feet of Head)
Figure 3-3 Pressure Drop vs. Flow
20°F Temperature Rise Applications
Model GPM FT/HD
Minimum Pipe
Size
Pump
Grundfos TACO B & G Armstrong
151 14 20 1" UPS26-99F 0011 NRF-36 E7
211 20 29 1" UPS32-160 1400-50 PL-55 E9*
286 27 15 1-1/4" UPS32-80 1400-20 PL-36 E11
Table 3A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35°
25°F Temperature Rise Applications
Model GPM FT/HD
Minimum Pipe
Size
Pump
Grundfos TACO B & G Armstrong
151 11 13 1" UPS26-99F 0014 NRF-36 E7
211 16 19 1" UPS26-99F 0013 NRF-36 E7
286 21 12 1-1/4" UPS26-99F 0011 NRF-36 E7
Pumps listed in bold type are provided by the factory as the boiler circulation pump on standard altitude
models.
NOTICE
35°F Temperature Rise Applications
Model GPM FT/HD
Minimum Pipe
Size
Pump
Grundfos TACO B & G Armstrong
151 810 1" UPS15-58FC 008/0010 NRF-36 Astro-30
211 11 9 1" UPS15-58FC 0010 NRF-36 Astro-50
286 15 7 1-1/4" UP26-64F 008/0010 NRF-36 E7
Pumps listed in italicized type are provided by the factory as the boiler circulation pump on high altitude
models.
NOTICE
The temperature rise provided by a pump/model combination will decrease by 3% per 1000 feet of elevation.
NOTICE
3 Hydronic piping (continued)
These pumps are only slightly above 20° rise flows, but are the closest available. To reach a 20° rise or less, an
upsized pump will be required.
*NOTICE
Outdoor Knight Boiler Installation & Operation Manual