Submittal Sheet

Laars Heating Systems Company reserves the right to change specications, components, features, or to discontinue products without notice.
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Water Flow
Requirements
Temperature Rise in °F
20°F 25°F 30°F 35°F 40°F
Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L
Size gpm feet gpm feet gpm feet gpm feet gpm feet
080 7.6 14.9 6.1 10.1 5.1 7.1 4.3 5.8 3.8 4.6
105 10.0 23.1 8.0 17.0 6.7 12.4 5.7 9.6 5.0 7.6
150 14.3 28.5 11.4 19.0 9.5 13.6 8.1 11.2 7.1 8.8
210 20.0 24.1 16.0 16.7 13.4 11.6 11.3 9.0 9.9 6.9
Temperature Rise in °C
11°C 14°C 17°C 19°C 22°C
Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L
Size lpm m lpm m lpm m lpm m lpm m
080 29 4.5 23 3.1 19 2.2 16 1.8 14 1.4
105 38 7.0 30 5.2 25 3.8 22 2.9 19 2.3
150 54 8.7 43 5.8 36 4.1 31 3.4 27 2.1
210 76 7.3 61 5.1 51 3.5 43 2.7 37 2.4
Note that pumps are sized for a) 25-30°F temperature rise across the boiler;
b) 30 feet of external boiler loop piping (1"); c) six 90° elbows.
Electrical
Data
Sizes
Boiler
Pump Connections Ratings
Volts Phase Amps
(System Pump and DHW Pump Connections)
80-210 120 Single 2* 115V – Maximum 1HP
No Pump or 7.4A max
080–210 Less
With Pump 120 Single than 115V – Maximum 1HP
6* or 7.4A max
*
Minimum 15A circuit required