Ultimate Products SGX - Manual (Page 16)

2319 Laurelbrook Street, Raleigh, NC 27604 · (800) 542-7221 · FAX (919) 834-4526 · www.ultimate-products.com
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A.10 INSTALLATION CHECK OUT AND START UP (CONT.)
To shut down the heater, switch off the power supply to the system. Automatic
control of the heater or a series of heaters may be achieved by incorporating
thermostats, time switches, manual over-ride switches etc. in the electrical supply
to the heater(s). It is essential to allow a delay of 15 seconds after switching off
the system before attempting to restart.
If at a ny time after completion of the start up sequence, loss of flame should
occur, the control unit will attempt to reignite. If this is unsuccessful lock out will
occur.
Set burner gas pressure as follows. Switch off the power supply to the heating
system. Connect a ‘U’ tube manometer to the pressure test nipple provided on
the combination gas control valve. Remove the cover from the pressure regulator
revealing the adjustable screw. Start the heater and using a suitable screwdriver
adjust the pressure regulator, turning the screw clockwise to increase the
pressure or counter clockwise to decrease the pressure. Set the pressure to
appropriate in w.c. from the table of dimensions for correct heater description.
Switch off the power supply to the heating system. Disconnect ‘U’ tube
manometer and securely replace screw in pressure test nipple. Replace cover
screw on pressure regulator.
Check the operation of the flame safeguard equipment as follows: With the
heater running normally, switch off the gas supply at the shut off valve. The
heater should attempt to relight and if the gas valve has been left off “lockout”
should occur indicated by the “Power On” light only being illuminated and fan
running.
Check the operation of the vacuum proving switch as follo ws. With the heater
running normally, pull off the silicone rubber tube connecting the vacuum switch
to the combustion chamber. Within one second, the burner should shut off. Then
replace the tube securely and observe that the heater proceeds to ignite in the
normal way.
Replace the controls cover securing the five fixing screws.