Laars Pennant PNCH, Инструкция по установке и эксплуатации

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LAARS Heating Systems
Page 18
Figure 6. Suggested Piping — One Water Heater, One Tank.
Table 9. Temperature Rise — Water Heater.
Size
GPM Water Flow Temperature Rise °F LPM Water Flow Temperature Rise °C
Soft Normal Hard Soft Normal Hard
Soft Normal Hard Soft Normal Hard
500
45 68 90 19 13 9
170 257 341 10 7 5
750 45 68 90 28 19 14 170 257 341 16 10 8
1000 45 68 90 38 25 19 170 257 341 21 14 10
1250 68 68 90 31 31 24 257 257 341 17 17 13
1500 68 68 90 38 38 28 257 257 341 21 21 16
1750 68 68 90 44 44 33 257 257 341 24 24 18
2000 112 112 112 30 30 30 424 424 424 17 17 17
Notes:
Soft Water = 1 to 7.5 grains hardness
Normal Water = 7.6 to 17 grains hardness
Hard Water = more than 17 grains hardness
GPM = gallons per minute
LPM = liters per minute
certified for outdoor installations, such installations
are not recommended in areas subject to freezing
temperatures, unless proper precautions are taken.
Power outage, interruption of gas supply, failure
of system components, activation of safety devices,
etc., may prevent a heater from firing. Any time a
heater is subjected to freezing conditions, and the
heater is not able to fire, and/or the water is not
able to circulate, there is a risk of freezing in the
heater or in the pipes in the system.
When water
freezes, it expands. This can result in bursting of pipes
in the system, or damage to the heater, which could
result in leaking or flooding conditions.
Contact the local factory representative or Laars
for additional information.