Slant/Fin VSL-160C Part A - Manuel (Page 18)

18
CAUTION!!!
Risk of system
damage due to unsuitable
heating system water. If
oxygen-permeable pipes are
used, e.g. for under fl oor
heating systems, the systems
must be separated from
one another by plate heat
exchangers. Unsuitable heating
system water promotes sludge
and corrosion formation. This
can result in heat exchanger
damage and malfunction, which
is not covered by warranty.
CAUTION!!!
Do not use the boiler
to directly heat swimming pool or
spa water.
System water piping methods
This boiler is designed to function in
a closed loop pressurized system not
less than 8 psi (0,5 bar). A pressure
gauge is included to monitor system
pressure. It is important to note
that the boiler version 160-B has a
minimal amount of pressure drop
(see Figure 7-4) and must be fi gured
in when sizing the circulators. Each
boiler installation must have an air
elimination device, which will remove
air from the system. Install the boiler
so the gas ignition system components
are protected from water (dripping,
spraying, etc.) during appliance
operation for basic service of circulator
replacement, valves, and others.
Observe a minimum of 1/4” (7mm)
clearance around all un-insulated hot
water pipes when openings around
the pipes are not protected by non-
combustible materials.
Low water cutoff device
On a boiler installed above radiation
level, some states and local codes
require a low water cutoff device at the
time of installation.
Freeze protection
Freeze protection for new or existing
systems must use glycol that is
specially formulated for this purpose.
This includes inhibitors, which prevent
the glycol from attacking the metallic
system components. Make certain to
check that the system fl uid is correct
for the glycol concentration and
inhibitor level. The system should be
tested at least once a year and as
recommended by the producer of the
glycol solution. Allowance should be
made for the expansion of the glycol
solution in the system piping.
WARNING!!!
Never use
non-approved additives or toxic
boiler treatment chemicals in
the heating system as they
can cause serious health
problems or possibly death.
Any additives introduced into
the heating system must be
recognized as safe by the
United States Food and Drug
Administration.
WARNING!!!
Use
only inhibited propylene
glycol solutions, which are
specifi cally formulated for
hydronic systems. Ethylene
glycol is toxic and can attack
gaskets and seals used in
hydronic systems.
CAUTION!!!
If glycol is used,
it must be used in accordance
with the instructions supplied
with the product.
CAUTION!!!
Any additives
added to the heating system
must not be added directly
inside the boiler but through
the heating system piping to
prevent damage to the boiler.
CAUTION!!!
This boiler is
capable of servicing multiple
temperature loop systems.
It is the responsibility of
the installer to protect the
loops with lower temperature
requirements from higher
temperatures that may be
required by other loops
Floor radiant heating systems
With switch #6 in Figure 9-2, in the ON
position, the boiler will maintain the supply
water temperature between 68°F (20°C)
and 113°F (45°C). No setting changes
made from the control panel will cause
the supply water temperature to exceed
113°F (45°C).
7 - INSTALLATION - Water connections
CAUTION!!!
If the boiler is
installed in a low temperature
system, the switch #6 in
Figure 9-2 must be placed in
the ON position to prevent
the supply water temperature
from exceeding 113°F (45°C) or
damage to the low temperature
system components could occur
(see section 5.9).
CAUTION!!!
To protect the radiant
fl oor panel against over heating
you must install a safety device
that shuts-off the boiler before
it reaches the fl oor panel’s limit
temperature.
CAUTION!!!
Risk of system
damage due to unsuitable
heating system water. If
oxygen-permeable pipes are
used, e.g. for under fl oor
heating systems, the systems
must be separated from
one another by plate heat
exchangers. Unsuitable heating
system water promotes sludge
and corrosion formation. This
can result in heat exchanger
damage and malfunction, which
is not covered by warranty.
7.2.1 - Near boiler heating
piping components
1. Boiler system piping: boiler
system piping MUST be properly
sized. Reducing the pipe size can
restrict the fl ow rate through the
boiler, causing inadvertent high
limit shutdowns and poor system
performance.
2. Boiler system pump: fi eld supplied
for 160-B model. Factory installed
for 160-C model. Circulators MUST
be sized to meet the specifi ed
minimum fl ow requirements of 5
GPM.
3. Indirect water heater circulating
pump: Field supplied. The
pump MUST be sized to
meet the specifi ed minimum
fl ow requirements of 5 GPM.
Consult the indirect water heater
operating guide to determine fl ow
characteristics for the selected
product used.