WHL-038 Rev. 1.29.16
18
Table 6 - Multiple Boiler Manifold Piping
The chart below represents the combined flow rates and pipe sizes when using multiple boilers to design the manifold system for
the primary circuit. To size, simply add up the number of boilers and the required flow rates for the system design temperature.
Example: (5) 750 boilers with a design of 30
o
F temperature rise with each boiler having an individual flow rate of 50 GPM. To
correctly size the manifold feeding these boilers, you would need a pipe size of 5”.
NOTE: Boiler failure due to improper water chemistry is not
covered by warranty.
Water Chemistry*
•
Sodium less than 20 mGL
•
Water pH between 6.0 and 8.0
•
Maintain water pH between 6.0 and 8.0. Check with
litmus paper or have it chemically analyzed by water
treatment company.
•
If the pH differs from above, consult local water
treatment for treatment needed.
•
Hardness less than 7 grains
•
Consult local water treatment companies for unusually
hard water areas (above 7 grains hardness).
•
Chlorine concentration less than 100 ppm
•
Using chlorinated fresh water should be acceptable as
levels are typically less than 5 ppm.
•
Do not connect the boiler to directly heat swimming
pool or spa water.
•
Do not fill boiler or operate with water containing
chlorine in excess of 100 ppm.
*NOTE:
It is recommended to clean the heat exchanger at
least once a year to prevent lime scale buildup. To clean the
heat exchanger, follow the maintenance procedure in this
manual.
H. Check / Control Water Chemistry
Hardness:
Less than 7 grains
Chloride levels:
Less than
100 ppm
pH levels:
6 - 8
TDS:
Less than
2000 ppm
Sodium:
Less than 20 mGL
Clean system to remove sediment*
1. You must thoroughly flush the system (without boiler
connected) to remove sediment. The high-efficiency heat
exchanger can be damaged by buildup or corrosion due to
sediment.
2. For zoned systems, flush each zone separately through
a purge valve. (If purge valves and isolation valves are not
already installed, install them to properly clean the system.)
3. Flush system until water runs clean and you are sure piping
is free of sediment.
*NOTE:
It is recommended you clean heat exchanger at
least once a year to prevent lime scale buildup. Follow the
maintenance procedure to clean the heat exchanger in the
Maintenance Section of this manual.
Test/replace freeze protection fluid
1. For systems using freeze protection fluids, follow fluid
manufacturer’s instructions to verify inhibitor level and that
other fluid characteristics are satisfactory.
2. Freeze protection fluid must be replaced periodically
due to degradation of inhibitors over time. Follow all fluid
manufacturer instructions.
Содержание WBCETNG1000
Страница 14: ...WHL 038 Rev 1 29 16 14 Figure 6 Specifications and Dimensions NOTE All Dimensions Are Approximate ...
Страница 35: ...WHL 038 Rev 1 29 16 35 Figure 24 CascadeTermination Plug Detail Figure 25 Cascade Master and FollowerWiring ...
Страница 36: ...WHL 038 Rev 1 29 16 36 Figure 26 Internal Connection Diagram ...
Страница 65: ...WHL 038 Rev 1 29 16 65 Figure 44 Exterior Replacement Parts ...
Страница 66: ...WHL 038 Rev 1 29 16 66 Table 27 Optional Jacket Replacement Parts Part 15 Installing the Optional Jacket ...
Страница 73: ...WHL 038 Rev 1 29 16 73 Maintenance Notes ...