LAARS Pennant PNCV - Install and Operating Manual User Manual
Page 18
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.