Gas Control Knob Settings; Adjustment - Maxitrol GV60 Installations- Und Bedienungsanleitung

INSTALLATION INSTRUCTIONS

GAS CONTROL KNOB SETTINGS

Gas control knobs function as follows (see figure 18):
KNOB POSITION
Main valve OFF
Main valve ON
MANUAL knob MAN
MANUAL knob ON

ADJUSTMENT

It is the appliance manufacturer's responsibility to deter-
mine GV60's suitability for a specific application.
Do NOT attempt to remove screws from the top of gas
valve. Do NOT change any adjustments marked with
tamper indicating paint. Motor knob is not to be removed.
Pressure Regulator
or Throttle
(remove plug first)
Main Valve Knob
Side Inlet
Side Outlet
Bottom Inlet
Inlet Pressure Tap
Bottom Outlet
Outlet Pressure Tap
Figure 18: GV60, Connections and Adjustment Options
Pilot Flame Adjustment
(Vented Units Only)
The pilot flow adjustment is preset to maximum at the fac-
tory. The pilot flame should envelope ⅜" to ½" of the thermo-
couple – vented only (see figure 19).
1. The adjustment screw can be reached through a hole in
the MANUAL knob (see figure 18).
2. Turn the MANUAL knob to the ON position.
3. It is now possible to pierce through a film on the cover with
a screwdriver to reach the adjustment screw beneath.
4. Turn the adjustment screw clockwise
or counter-clockwise
FUNCTION
Prevents main gas flow through
valve.
Permits main gas flow through valve
if the pilot is lit and thermocouple is
generating sufficient power.
Allows the pilot to be manually ignited
and prevents main gas flow.
Allows for automatic ignition.
Pilot Gas Adjust-
ment Screw (turn
with screwdriver)
MANUAL Knob
Connection
Piezo Igniter
Tab 2.8 x 0.8 mm
Magnet Unit
Minimum Rate Orifice
to decrease
to increase pilot flame.
Vented gas appliances
Figure 19: Proper Flame Impingement on Thermocouple
Outlet Pressure Adjustment
(Vented Units Only)
STANDARD REGULATOR OR THROTTLE
(Throttle CE only)
1. Connect a pressure manometer to the valve outlet pres-
sure tap. Pressure tap is opened by turning the screw
counter-clockwise
Pressure regulator or throttle are located under the cover
and can be reached by removing the plug (see figures 18
and 19).
2. Turn MANUAL knob and main valve knob to the ON posi-
tion.
3. Turn pressure regulator adjustment screw to set required
burner pressure (high fire). Pressure is increased by turn-
ing clockwise
creased by turning counter-clockwise
NOTE: Throttle model's pressure is increased by turning
counter-clockwise
clockwise
Pressure regulator or throttle
Figure 20: Combination Control GV60, Cover
4. After adjustment, replace the plug.
5. If no other adjustments are required, close pressure tap(s)
by turning the screw(s) full clockwise
Check all connections/pressure tap(s) for leaks.
6. If the desired outlet pressure or flow cannot be achieved
by adjusting the gas valve, check the gas valve inlet pres-
sure using a manometer at the valve inlet pressure tap. If
the inlet pressure is in the normal range, replace the gas
valve; otherwise, take necessary steps to assure proper
gas pressure to the valve.
CONVERTIBLE PRESSURE REGULATOR
(optional)
Convertible regulators are designed to deliver either of two
fixed outlet pressures for Natural Gas (NG) or LP Gas. To
change from one gas to the other, turn the conversion plug
(see figure 21, page 13) counter-clockwise
move. Unsnap and remove the plastic part, rotate it 180°,
and then slide it back on the conversion plug until it snaps.
12 / 20
FOR OEM USE ONLY
⅜ to ½ in.
(10 to 13 mm)
Thermocouple
.
(pressure regulator models), or de-
.
; or decreased by turning
.
.
to re-