Lochinvar 81 - 286 Installation And Operation Manual page 37

6
Hydronic piping
Figure 6-3 Pressure Drop vs. Flow
25
20
15
10
5
0
3 4
Table 6A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35°
Model GPM FT/HD
81 7.5 24
106 9.8 27
151 14.0 20
211 19.6 29
286 26.5 15
These pumps are only slightly above 20° rise flows, but are the closest available. To reach a 20° rise or less, an
*NOTICE
upsized pump will be required.
Model GPM FT/HD
81 5.9 15.0
106 7.7 17.5
151 11.0 12.8
211 15.5 19.0
286 21.0 11.5
Model GPM FT/HD
81 4.2 7.3
106 5.5 9.3
151 7.9 9.5
211 11.0 9.1
286 15.0 7.3
Pumps listed in bold type are provided by the factory as the boiler circulation pump on standard altitude
NOTICE
models.
Pumps listed in italicized type are provided by the factory as the boiler circulation pump on high altitude
NOTICE
models.
The temperature rise provided by a pump/model combination will decrease by 3% per 1000 feet of elevation.
NOTICE
(continued)
Pressure Drop vs. Flow (Includes Secondary Piping)
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Flow Rate (GPM)
20°F Temperature Rise Applications
Minimum Pipe
Size
1"
1"
1"
1"
1-1/4"
25°F Temperature Rise Applications
Minimum Pipe
Size
1"
1"
1"
1"
1-1/4"
35°F Temperature Rise Applications
Minimum Pipe
Size
1"
1"
1"
1"
1-1/4"
Installation & Operation Manual
Pump
Grundfos TACO
UPS26-99F 0011
UPS26-99F* 0013
UPS26-99F 0011
UPS32-160 1400-50
UPS32-80 1400-20
Pump
Grundfos TACO
UPS15-58FC 0014
UPS26-99F 0014
UPS26-99F 0014
UPS26-99F 0013
UPS26-99F 0011
Pump
Grundfos TACO
UPS15-58FC 007
UPS15-58FC 007
UPS15-58FC 008/0010
UPS15-58FC 0010
UP26-64F 008/0010
81
106
151
211
286
B & G Armstrong
NRF-36 E7
NRF-36 E11
NRF-36 E7
PL-55 E9*
PL-36 E11
B & G Armstrong
NRF-36 E7
NRF-36 E7
NRF-36 E7
NRF-36 E7
NRF-36 E7
B & G Armstrong
NRF-22 Astro-30
NRF-22 Astro-30
NRF-36 Astro-30
NRF-36 Astro-50
NRF-36 E7
37