resideo SmartValve SV9410, Руководство по установке, Страница: 10 / 16

SV9410/SV9420; SV9510/SV9520; SV9610/SV9620 SMARTVALVE™ SYSTEM CONTROLS
69-1058—05 10
removing the gauge and replacing the plug. Before
removing inlet pressure tap plug, shut off gas supply at
the manual valve in the gas piping to the appliance or, for
LP, at the tank. Also shut off gas supply before
disconnecting manometer and replacing plug. Repeat
Gas Leak Test at plug with main burner operating.
NOTE: Check the inlet pressure before adjusting the
pressure regulator.
1. Check the full rate manifold pressure listed on the
appliance nameplate. Ignition system control full
rate outlet pressure should match this rating.
2. With main burner operating, check the ignition
system control flow rate using the meter clocking
method or check pressure using a manometer
connected to the outlet pressure tap on the ignition
system control. See Fig. 4.
3. If necessary, adjust the pressure regulator to
match the appliance rating. See Tables 7 and 8 for
factory-set nominal outlet pressure and adjust-
ment range.
a. Remove the pressure regulator adjustment cap
screw.
b. Using a screwdriver, turn the inner adjustment
screw clockwise to increase or
counterclockwise to decrease the gas
pressure to the burner.
c. Always replace the cap screw and tighten
firmly to prevent gas leakage.
4. If the desired outlet pressure or flow rate cannot be
achieved by adjusting the ignition system control,
check the ignition system control inlet pressure
using a manometer at the ignition system control
inlet pressure tap. If the inlet pressure is in the
nominal range (see Tables 8A and 8B), replace the
ignition system control. Otherwise, take the
necessary steps to provide proper gas pressure to
the control.
NOTE: If the burner firing rate is above the capacity (at
1 in. wc pressure drop) of the control (see Table
3 for capacities), it may not be possible to
deliver the desired outlet pressure. This is an
application issue, not a control failure. Take
whatever steps are required to correct the
situation.
5. STEP-OPENING PRESSURE REGULATORS ONLY.
Carefully check the burner lightoff at step pressure.
Make sure the burner lights smoothly and without
flashback to the orifice. Make sure all ports remain
lit. Cycle the burner several times, allowing at least
60 seconds between cycles for the regulator to
resume the step function. Repeat after allowing the
burner to cool. Readjust the full rate outlet
pressure, if necessary, to improve lightoff
characteristics.
Table 7. Pressure Regulator Specification Pressures (in. wc).
Table 8. Pressure Regulator Specification Pressures (kPa).
Model Type Type of Gas
Nominal Inlet
Pressure Range
Factory Set Nominal Outlet
Pressure Setting Range
Step Full Rate Step Full Rate
Standard, Slow NAT 5.0-7.0 — 3.5 — 3.0-5.0
LP 12.0-14.0 — 10.0 — 8.0-12.0
Step NAT 5.0-7.0 0.9 3.5 None 0.7-1.7
LP 12.0-14.0 2.2 10.0 None 1.4-5.5
Two-stage NAT 5.0 - 7.0 — 1.7 Low
3.5 High
— 0.9 - 3.0 Low
3.0 - 5.0 High
LP 12.0 - 14.0 — 4.9 Low
10.0 High
— 3.5 - 5.5 Low
8.0 - 11.0 High
Model Type Type of Gas
Nominal Inlet
Pressure Range
Factory Set Nominal Outlet
Pressure Setting Range
Step Full Rate Step Full Rate
Standard, Slow NAT 1.2-1.7 — 0.9 — 0.7-1.2
LP 2.9-3.9 — 2.5 — 2.0-3.0
Step NAT 1.2-1.7 0.2 0.9 None 0.17-0.48
LP 2.9-3.9 0.5 2.5 None 1.4-1.37
Two-stage NAT 1.2 - 1.7 — 0.48 Low
0.9 High
— 0.22 - 0.75 Low
0.75 - 1.2 High
LP 2,9 - 3.9 — 1.2 Low
2.5 High
— 0.9 - 1.4 Low
2.0 - 2.5 High