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Finned copper tube gas boilers & water heaters – Boiler Manual
21
F
F
Never use an open fl
ame to test for gas
leaks. Always use an approved leak detection method.
Failure to comply with this warning can cause extensive
property damage, severe personal injury or death!
Whenever the gas supply piping is pressure tested the boiler/water
heater gas controls must be protected. If the test pressure is equal
to, or less than
1/2 psig
,
3.5 kPa
isolate the boiler/water heater
by closing it’s manual shut off valve, see Figure 14. If the test pressure
is greater than, or equal to
1/2 psig
,
3.5 kPa
, disconnect the boiler/
water heater and its individual shut-off valve.
ELECTRICAL WIRING
Electrical Power Connections
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation! Verify proper operation aft er
servicing.
Au moment de l’entretien des commandes, étiquetez
tous les fi ls avant de les débrancher. Des erreurs de
câblage peuvent entraîner un fonctionnement inadé-
quat et dangereux. S’assurer que l’appareil fonctionne
adéquatement une fois l’entretirn terminé.
Th e electrical connections to this boiler/water heater must be made
in accordance with all applicable local codes and the latest revision
of the National Electrical Code, ANSI /NFPA-70. Installation should
also conform with CSA C22.1 Canadian Electrical Code Part I if
installed in Canada.
Install a separate 120 volt 15 amp or 20 amp circuit breaker for the
boiler/water heater and pump, see Table 11. A properly rated shut-
off switch should be located at the boiler/water heater. Th e boiler/
water heater must be grounded in accordance with the authority
having jurisdiction, or if none, the latest revision of the National
Electrical Code, ANSI/NFPA-70.
Table 11
Futera III Electrical Requirements
Recommended
Futera III
Circuit Breaker
*Running
Model
(Amps)
Amps
MB/MW 500
15
3.9
MB/MW 750 - 1000
15
6.0
MB/MW 1250 - 2000
20
11.4
*Use separate circuit breaker that is properly sized for pump and
pump contactor.
Line voltage fi eld wiring of any controls or other devices must
conform to the temperature limitation of type TEW wire at
95°F
,
35°C
above room temperature. Use copper conductors with a
minimum size of #14 awg. Use appropriate wiring materials for
units installed oudoors. Th e wire size must be compatible with the
total amp draw of the circuit.
Refer to the wiring diagram supplied with the boiler/water heater
for proper wiring connections and boiler full load amperage (FLA).
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 per-
sonal 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.
En cas de surchauff e ou si l’alimentation en gaz ne s’arrête pas, fermez
manuellement le robinet d’arrêt de l’admission de gaz.
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 “OPERA
TING INSTRUCTIONS”
section. Run the boiler for at least an hour. Th e 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.
