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Finned copper tube gas boilers & water heaters – Boiler Manual
24
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GENERAL OPERATION
Before proceeding read and fully understand the
instructions contained in this manual. Do not att empt
to operate this boiler/water heater if it has not been
installed in accordance with the guidelines set forth in
this manual. Failure to comply with this warning can
result in extensive property damage, severe personal
injury or death!
Should overheating occur or the gas supply fail to shut off , turn off
the manual gas control valve to the appliance. Do not interrupt water
fl ow through the boiler/water heater.
Hydronic heating boilers
Open the make-up water valve and slowly fi ll the boiler and all of the
radiation with water. Ensure that all bleed and drain valves are closed.
Adjust the make-up water pressure regulator so a minimum 12 psig,
82.7 kPa system pressure is maintained at the highest point in the
system piping. If a make-up water pump is used adjust it to maintain
a minimum 12 psig, 82.7 kPa system pressure.
Open the system bleed and drain valves, one at a time, to purge the
air trapped in the heating system piping.
With the boiler off, run the system pump for at least 30
minutes and bleed the system piping using the bleed
valves. If strainers are used in the system piping, the make- up water
valve should be closed and the strainers checked and cleaned.
Th e system expansion tank should be checked to ensure that the
correct water level in the tank is maintained. Th e tank should be less
than half full of water with the system full and adjusted to the correct
operating pressure.
Start the boiler as described in the “Operating Instructions” section.
Run the boiler for at least an hour. The system pump(s) and all
radiation units must be operated during this time. Ensure that the
make-up water valve is open.
Shut the boiler off and open the bleed valves to purge the
air trapped in the heating system piping. Close the make-
up water valve and check and clean the strainers and make-up water
pressure reducing valve.
Open the make-up water valve and adjust the system pressure if
necessary. Th e system should be checked and bled aft er three days
of operation.
WIRING & CONTROL SET-UP
Follow the instructions in the Futera XLF Control
installation and operation instruction manual
shipped with the boiler to wire the boiler and set
up the HeatNet control. Th e control must be set
up before att empting to fi re the boiler.
See Figure 17, page 25 for location of electrical components.
In addition to the information in the Futera XLF Control IOM, see
the following information on controls and interlocks.
CONTROLS & INTERLOCKS
Low Water Cutoff
If the boiler is to be installed above radiation or if required
by other codes or regulations, install a low water cutoff in
appropriate piping. Wire the switch to the "Interlock" contacts as
illustrated on “Field Wiring” schematic. Ensure that the low water
cutoff device(s) will function properly.
Operating Control
Th e operating control should be set to the lowest sett ing that will
satisfy the consumer's needs.
Sett ing the thermostat or operation control too high
can result in scalding resulting in severe personal
injury!
High Limits (Aquastats)
Th e high limits are located in the top control area of the boiler/water
heater. Remote capillary bulbs run to wells on the outlet side of the
supply header. The high limit can be reset by depressing the red
butt on.
The water heater high limit should be set to a minimum of 20
o
F,
11
o
C higher than the operating control. Refer to the HOT WATER
SUPPLY section for the proper supply water temperature.
Flow Switch
A fl ow switch is provided in the water outlet piping to prevent the
boiler/water heater from fi ring without adequate water fl ow through
the heat exchanger.
PROPANE GAS
Propane gas may not always be detected by smell. Propane gas is heavier than air and can collect in low areas.
Propane gas can ignite or explode if an ignition source is present and result in death, serious injury and property damage!
