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WATER PIPING AND CONTROLS
4. WATER PIPING & CONTROLS
A. GENERAL
1. Size water supply and return piping in accordance with
system requirements rather than the boiler connections.
2. In hydronic systems where sediment may exist, install a
strainer in the boiler return piping to prevent large particles
and pipe scale from entering the boiler heat exchanger. Use a
large mesh screen in the strainer.
3. Install this boiler so that the gas ignition system components
are protected from water (dripping, spraying, etc.) during
operation and service (circulator replacement, condensate
trap cleaning, sensor replacement, etc.).
B. WATER QUALITY
The Peak boiler is intended for use in a closedloop hydronic
system. Make-up fresh water for the system will include oxygen,
calcium and other substances which may cause corrosion,
calcium scale buildup or other attacks on the hydronic system
and boiler components. The following steps should be taken to
maximize the longevity of the boiler and system:
Central Heat System:
1. Water hardness must be between 3 Grains/Gal (gpg) and 9
Grains/Gal (gpg). Use of a water treatment system may be
required on make-up water in areas with hard water.
2. The systems water pH level should fall between 6 pH
and 8 pH. The slightly alkaline water will work to prevent
corrosion and neutralize any acidic buildup over time
minimizing potential sources of corrosive attacks on the
heat exchanger.
3. The system should be flushed and cleaned thoroughly with
fresh water and a rinsing agent prior to boiler installation.
Any new system must be cleaned to remove any flux or
welding residue. Any existing system must be cleaned
to remove scale and particulate matter prior to boiler
connection to the system. Thoroughly flush any cleaning
agent from the system with clean water prior to connecting
the boiler. See Table 4.1 below for recommended cleaning
agents.
4. High oxygen levels in the system water will allow scale
buildup to occur. Steps must be taken to minimize oxygen
levels in the system. The following items are recommended
during installation:
a. Provide Air Elimination Means: An automatic air vent
should be installed at the highest point in the system and
at any points air could potentially be trapped. When
replacing an existing boiler, ensure any automatic air
vents installed in the system are functioning correctly and
installed in a proper location. A hydronic separator is
another option to provide a low velocity zone for trapped
air bubbles to separate and be eliminated from the system
while providing primary/secondary operation.
b. The Peak is provided with a manual air vent and hose to
remove any air trapped in the heat exchanger on filling.
Refer to Section 9: Start Up for more details.
c. The Peak has a built in De-Air feature that activates on
initial power up. Allow this cycle to run fully to help drive
any trapped air out of the unit and to the air vent or vents.
Refer to Section 8 for more details on the De-Air Cycle.
WARNING
Failure to properly analyze and treat system water when installing a high efficiency boiler can cause heat
exchanger failure due to water passageway fouling. Black oxide sludge (magnetite – Fe
3
O
4
), red oxide sludge (iron
oxide – Fe
2
O
3
), and calcium scale (limescale) will settle over the hottest portion of the heat exchanger coils.
This buildup will reduce thermal transfer in the areas where the buildup is greatest resulting in an increased
fouling rate. The high temperatures in these locations will compromise the natural corrosion resistance of the
stainless steel material leading to accelerated failure of the heat exchanger.
Failure to address the causes of the fouling in the system can void heat exchanger warranty, and risk property
damage, personal injury or death.
System must be cleaned before the boiler is connected!
• Flush the system with fresh water.
• Use a cleaning agent appropriate for the system material and debris to be removed.
• Thoroughly flush cleaning agent residue from the system with fresh water.
The following actions must be taken after the boiler is connected to the system:
• Treat the system water with a corrosion and scale inhibitor to prevent oxidization and scale buildup. Follow the
inhibitor manufacturer’s instructions when treating the system water.
Summary of Contents for Peak-40
Page 22: ...22 WATER PIPING AND CONTROLS Figure 4 6 Recommended Central Heat Piping ...
Page 24: ...24 WATER PIPING AND CONTROLS Figure 4 8 Recommended Domestic Hot Water Piping ...
Page 33: ...33 ELECTRICAL CONNECTIONS Figure 7 4 Wiring Schematic and Connection ...
Page 47: ...47 START UP PROCEDURE E LIGHTING OPERATING PROCEDURES ...
Page 59: ...59 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 62: ...62 REPAIR PARTS Figure 13 2 Peak 40 LP Combustion Components ...
Page 64: ...64 REPAIR PARTS Figure 13 3 Peak 40 NG Combustion Components ...
Page 66: ...66 REPAIR PARTS Figure 13 4 CHB Parts Detail ...
Page 68: ...315 Oser Avenue Hauppauge NY 11788 Tel 631 694 1800 Fax 631 694 1832 www embassyind com ...