Leak Testing; Minimum Setting Or Turndown - Fisher & Paykel GC912 Installation Instructions Manual

Leak testing

Leak testing of the appliance shall be
conducted according to the manufacturer's
instructions.
The appliance and its individual shutoff
valve must be disconnected from the gas
supply piping system during any pressure
testing of that system in excess of 1/2 p.s.i.
(3.5kPa).
The appliance must be isolated from the
gas supply piping system by closing its
individual manual shutoff valve during any
pressure testing of the gas supply piping
system at test pressures at or less than
1
/ p.s.i. (3.5 kPa).
2
Maximum inlet gas supply pressure 20" W.C.
(5 kPa)
Minimum gas supply pressure for regulator
testing 5" W.C. Natural Gas, 12" W.C. LP gas.
After installing the gas supply and making
all connections check thoroughly for
possible leaks.
1
Turn all control knobs on unit to "off"
position.
2
Open the valve on the gas supply.
3
Using a leak detection fluid (eg Rocol
leak detection spray) check each gas
connection one at a time by brushing
the solution over the connection. The
presence of bubbles will indicate a leak.
4
If necessary, tighten the fitting and recheck
for leaks.
5
Turn on burner valve and light each
burner.
6
Check for a clear blue flame without yellow
tipping. If burners show any abnormalities,
check that they are located properly and in
line with the injector orifice.
See the Product Installation Checklist attached to the product.
Minimum setting or
turndown
After installation check the minimum
setting. This has been preset at the factory
for NG but needs to be checked and then
reset if necessary. To adjust for minimum
setting (if applicable), you will need a Ø
3
" x 1 / " (Ø2.5 x 45 mm) screwdriver.
4
(A suitable screwdriver is available as Fisher
& Paykel spare part FB200467).
1
Ignite the burner and set the knob to its
minimum position.
2
Remove the knobs.
3
Rotate the turn down screw (down the
hole in the spindle) while holding the
shaft. Rotate slowly until a minimum
regular flame is achieved. (The flame
will diminish when the screw is turned
clockwise and increase when turned
counter clockwise).
4
When the setting is right, check regulation
by quickly rotating the knob from the
maximum to the minimum delivery
position. The flame must not go out
and the autoreignition should not click.
Replace the knob.
Minimum setting adjustment
EN
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