24
5 - INSTALLATION - Mounting & gas and water connections
CAUTION!!! To protect the
fl oor panel against over heating
you must to install a safety device
that shut-off the boiler before
it reach the fl oor panel’s limit
temperature.
CAUTION!!! If the boiler
is installed in a radiant panel
heating system using plastic
piping, precautions must be taken
against corrosion caused by water
oxygenation.
If the piping does
not incorporate an oxygen barrier,
the radiant panel circuit must be
isolated from the boiler using a
titanium plate heat exchanger.
5.11 - Use of
glycol and other
chemicals
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.
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.
5.12 - Domestic hot
and cold water
CAUTION!!! If the water
hardness is greater than 9 gr/gal
(150 mg/l) we recommend installing
a water softener with fi lter.
Figure 9 illustrates the positioning
of the domestic hot and cold water
pipes.
For servicing purposes, install an
isolation valve upstream from the
cold water inlet.
To correctly set the domestic water
fl ow, install an adjustable fl ow
restrictor upstream the cold water
inlet (see fi gure 16 item “12”)
The PC160
™
boiler can also be
used as heating only boilers.
No connection is needed to the
domestic pipes “B” and “D” of
fi gure 9.
5.13 - Gas supply
piping
WARNING!!! Check that the type
and the pressure of the gas
supplied correspond with those
required for the boiler as stated
on the rating plate. Never use a
gas different than that stated on
the boiler rating plate. Failure
to comply with this warning can
result in a fi re or explosion causing
extensive property damage, severe
personal injury or death!
If the gas type and/or the supply
pressure do not match those stated
on the boiler rating plate the boiler
must be converted to the type
of gas and/or supply pressure
available. A conversion kit is
supplied together with the boiler.
CAUTION!!! This boiler
can supply heating water at a
temperature up to 190°F (88°C).
If the heating system is built with
materials not able to resist to this
temperature, you must to install a
device that shut-off the boiler before
the material’s limit temperature.
Figure 9 illustrates the position of
the supply and return pipes.
Install a metallic mesh fi lter on the
return pipe to prevent any residue
from the system returning to the
boiler.
Do not use the appliance for
adding any type of additive to the
system.
5.9.1 - Converting a
combi boiler into a
heating only boiler
If you are in possession of a PC160
™
boiler you can use it as a heating
system only without using the
domestic hot water circuit. To do so,
simply plug the two fi ttings, items
“3” and “5” of fi gure 7, and move
switch No. 5 (see fi gure 21) from OFF
position to ON position. Now knob
“32” of fi gure 1 is disabled.
5.10 - Low
temperature
heating systems
CAUTION!!! When the boiler
is installed in a low temperature
system, the switch No. 6 in fi gure
21 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).
With switch No. 6 in fi gure 21, 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).
Summary of Contents for Peerless Combi 160
Page 3: ...3 SAFETY INSTRUCTIONS...
Page 97: ...97 13 MAINTENANCE...
Page 105: ...105 NOTES...
Page 106: ...106 NOTES...
