HTP EL-110 Installation Start-Up Maintenance Parts

LP-293 Rev. 9.24.15
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The chart below represents the combined ow 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 ow rates for the system design temperature.
Example: (5) EL-220 boilers with a design of 20°Δt degree temperature rise with each boiler having an individual ow rate of 22
GPM. To correctly size the manifold feeding these (5) boilers you would need a pipe size of 4”.
Multiple Boiler Manifold Piping
Flow Rate (GPM) 16 22 24 30 32 33 40 44 45 48 50 55 60 66 75 80 85 88 90 100 110
Pipe Dia. (In.) 2 2 1/2 3 4
Table 6 - Multiple Boiler Manifold Piping
Figure 6 - Multiple Boiler Manifold Piping
Multiple Boiler Manifold Piping
Flow Rate (GPM) 120 132 150 160 170 179 200 210 239 240 250 255 300 340 350 400 425 510 595 680
Pipe Dia. (In.) 4 5 6
Table 7 - Multiple Boiler Manifold Piping
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 diers 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 ll 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.
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 ush the system (without boiler
connected) to remove sediment. The high-eciency heat
exchanger can be damaged by buildup or corrosion due to
sediment.
2. For zoned systems, ush 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.
H. Check / Control Water Chemistry

HTP EL-110 Specifications

General

Brand	HTP
Model	EL-110
Category	Boiler
Language	English