Table of Contents
Advertisement
INSTALLATION
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
The discharge from the safety relief
valve must be arranged to ensure
no danger of scalding personnel, or
equipment damage.
Provisions must be made to properly
pipe the safety relief discharge
away from the boiler to the point of
discharge.
No shuto of any kind shall be placed
between the safety relief valve
and the boiler, or in the discharge
pipe between the valve and the
atmosphere. Doing so may cause an
explosion from overpressure.
The hydronic system should never be
ushed while the boiler is attached
to the system since the debris could
accumulate in the boiler and block
water from passing through the heat
exchanger.
L
NOTE
The upper water connection on
the back of the boiler is the outlet
connection. The lower water
connection on the rear of the boiler is
the inlet connection.
2-6
Install Water Piping
All water supplies contain some solids, dissolved gases or dissolved minerals.
These may cause corrosion, deposition and/or fouling of equipment. To prevent
these contaminants from impacting boiler performance, valve operation and
general pipe longevity, you must analyze and treat each installation uniquely.
Adhere to the following for water piping installation (see Figures 4 7):
ƒ Manual isolation valves are recommended on both water connections for
ease of service.
ƒ Install piping so that the boiler is not supporting any piping load.
ƒ Install manual purging valves in all loops and zones.
ƒ Install a pressure-reducing (automatic ll) valve in the cold water ll line to
the boiler system.
ƒ To prevent scale and corrosion in boiler and associated piping, make up
water must be kept to a minimum. This is best achieved by ensuring
immediate repair of all leaks and maintaining system pressure.
ƒ Check that the proposed operation of zone valves, zone circulator(s) and
diverting valves will not isolate air separator(s) and/ or expansion tank(s)
from the boiler.
ƒ Provide at least 6 inches (152 mm) clearance from hot water pipes to
combustibles.
ƒ When used with a refrigeration system, install the boiler so that the chilled
medium is piped in parallel with the boiler with appropriate valves to
prevent the chilled medium from entering the boiler. If the boilers are
connected to heating coils (located in air handling units) where they may
be exposed to refrigerated air circulation, such boiler piping systems must
be equipped with ow control valves or other automatic means to prevent
gravity circulation of the boiler water during the cooling cycle.
ƒ Include the following in the mechanical equipment in the hydronic
heating system:
» An automatic pressure activated water make up valve with back ow
preventer. It must be set to maintain required Net Positive Suction
Head (NPSH) for re-circulating pumps, a positive system pressure at
the highest point of at least 5-10 PSIG, and should be designed to
add water to the system at the outlet of the boiler but should not be
fed directly into the boiler.
» Air removal equipment, including an air separator and automatic
breather valves, along with a functioning expansion tank . Each must
be designed to system speci cations.
ƒ Install ltration in the common loop or per boiler to remove particulates if
appropriate. A #4 or ner mesh size is required.
SECTION 2
EDR-PURE-IOM-230608
© Fulton Group N.A., Inc. 2023
Advertisement
Table of Contents
