16
Ph value
（
25
℃
）
6.5 − 8.0
Chloridion
（
CL
）
（
mg/L
）
＜
50
Conductivity
（
25
℃
）
(
μs/cm)
＜
250
Silver sulfate
（
SO42
−
）
（
mg/L
）
＜
50
Total iron
（
mg/L
）
＜
0.3
Total alkalinity
＜
50
Total hardness
（
mg/L
）
＜
50
Silicon dioxide
（
SiO2
）
＜
30
5. Water system piping for atmospheric (open) tank
6. Winter freeze protection
The unit is equipped with a freeze protection program. If the unit has power and senses the water is
below 40°F, it will turn on and operate the system until the water is at 60°F. To protect the hydronic
components from freezing during a power outage, there are a few options.
Option 1
: Order the unit with factory mounted heat-trace and connect the heat-trace circuit to the
building emergency power supply.
Option 2
: Utilize a glycol loop for the outdoor hydronic components; and a secondary double wall
heat exchanger between the glycol loop and potable hot water located indoors.
Option 3:
Drain the system during ambient conditions at or below 32°F (0
℃
). To properly drain the
system, follow the steps noted below:
Summary of Contents for ccHPWH Series
Page 11: ...8 III Product specification 1 Dimensions Unit inch ccHPWH275 S ccHPWH275 D ...
Page 12: ...9 ccHPWH550 S ccHPWH550 D ...
Page 26: ...23 2 Wiring diagram ccHPWH275 S ccHPWH275 D ...
Page 27: ...24 ccHPWH550 S ccHPWH550 D ...
Page 42: ...39 Schematic diagram of control wiring and code dialing of each module ...
