Laars NEOTHERM NTH Series, Инструкция по установке и эксплуатации

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N
EO
T
HERM
Residential Boilers
®
6.C Condensate Drain
A condensate drain trap is built into the unit.
Connect a 3/4” PVC pipe between the drain connection
and a floor drain (or a condensate pump if a floor drain is
not accessible).
The condensate drain must be installed so as to prevent
accumulation of condensate. When a condensate pump
is not used, the tubing must continuously slope downward
toward the drain with no spiraling.
Consult local codes for the proper disposal method for the
condensate.
CAUTION
Condensate is mildly acidic (pH = 5), and may harm
some floor drains and/or pipes, particularly those
that are metal. Ensure that the drain, drainpipe, and
anything that will come in contact with the condensate
can withstand the acidity, or neutralize the condensate
before disposal. Damage caused by failure to install
a neutralizer kit or to adequately treat condensate will
not be the manufacturers responsibility.
6.D Freeze Protection
These units are certified for indoor use only, and are not
design-certified for placement outdoors.
Proper precautions for freeze protection are recommended
for boiler installations in areas where the danger of freezing
exists.
Power outage, interruption of gas supply, failure of system
components, activation of safety devices, etc., may prevent
a boiler from firing.
Any time a boiler is subjected
to freezing conditions, and the boiler is not able to
fire, and/or the water is not able to circulate, there is
a risk of freezing in the boiler or in the pipes in the
system.
When water freezes, it expands which may result
in bursting of pipes, or damage to the boiler, which could
result in leaking or flooding conditions.
Do not use automotive antifreeze. To help prevent
freezing, Manufacturer recommends the use of inhibited
glycol concentrations between 20% and 35% glycol.
Typically, this concentration will serve as burst protection
for temperatures down to approximately -5°F (-20°C). If
temperatures are expected to be lower than -5°F (-20°C),
glycol concentrations up to 50% can be used.
When
concentrations greater than 35% are used, water flow rates
must be increased to maintain a 20°F to 25°F temperature
rise through the boiler.
NOTE: Manufacturer supplied pumps are not all capable
of maintaining the reduced temperature rise required
with glycol concentrations greater than 35%. If glycol
concentrations required are greater than 35% a field
supplied pump should be used.
CAUTION
Different glycol products may provide varying degrees
of protection. Glycol products must be maintained
properly in a heating system, or they may become
ineffective. Consult the glycol specifications, or the gly
-
col company, for information about specific products,
maintenance of solutions, and set up according to your
particular conditions.
6.E Recognized Chemicals
The following companies offer glycols, inhibitors, and anti
foamants that are suitable for use in the unit. Please refer
to the manufacturers instructions for proper selection and
application.
1. Sentinel Performance Solutions Group
2. Hercules Chemical Company
3. Dow Chemical Company
6.F Boiler Suggested Piping Schematics
Figure 9 through Figure 15 shows suggested piping
configurations for Boiler boilers. These diagrams are only
meant as a guide. All components or piping required by
local code must be installed.