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1. Place boiler in the selected location (as near
chimney as possible). Your boiler is shipped
assembled.Youneedonlyto installthecirculator,
ball valves the relief valve with a drain line to
carryanywater to adrain, andthe drain valve.
2. Install ReliefValveon 3/4"pipenippleintapped
openinginthe leftend section.Connecta drain
line of the same pipe size (3/4" to carry any
water away to a drain. No shutoff of any
descriptionshall be placed betweenthe safety
reliefvalveand theboiler,orondischargepipes
betweensuchsafetyvalvesandtheatmosphere.
Installationofthesafetyreliefvalveshallconform
to the requirements of theANSI/ASME Boiler
and PressureVessel Code,Section IV.
3. Install Drain Valve on lower left side of boiler
as marked.
4. Connect Supply and Return Lines to boiler.
The connections may require certain
additional fittings and parts, as shown on
diagram (Figs. 5 and 6).
Ifyou are installing an entire newheatingsystem,
first install all of your radiation units (panels,
radiatorsorcabinets) and theSupplyand Return
Mains- then make the connections atthe boiler.
Inconnecting the cold water supply to the water
valve, make sure that a clean water supply is
available. When the water supply isfrom a well
or pump, a sand strainer should be installed at
the pump.
A hotwaterboiler installed above radiation level
must beequipped with a lowwater cutoff device.
Aperiodic inspection is necessary,as isflushing
of float type devices, per manufacturers specific
instructions.
When boiler is used in connection with
refrigeration systems it shall be installed sothat
the chilled medium is piped in parallel with the
heating boiler with appropriate valves to prevent
the chilled medium from entering the heating
boiler (Fig. 7).
When this boiler isconnected to heating coils located
in air handling units where they may be exposed to
refrigerated air circulation, the piping system shall
be equipped with flow control valves or other
automatic means to prevent gravity circulation of
the boiler water during the cooling cycle.
LOW DESIGN WATER TEMPERATURE
SYSTEMS (BELOW 140 ° F)
If the boiler is to be used in a heating system
where design water temperatures below 140 °
F are desired (e.g. radiant floor heating), a 3-
way or 4-way mixing valve or suitable alternative
is required to prevent low temperature return
water from entering the boiler. Follow the mixing
valve manufacturers installation instructions.The
minimum design return water temperature to
the boiler to prevent condensation in the boiler
and venting is 120 ° F The minimum high limit
setting is 140 ° F.
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