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Pressure range
Color of cap
(mbar)
(mbar)
1.5 ... 20
grey
3 ... 37
yellow
INSTALLATION VR4920M
IMPORTANT
Take care that installer is a trained experienced
service person.
Turn off gas supply before starting installation.
Disconnect power supply to prevent electrical shock
and/or equipment damage.
Do not remove seals over inlet and outlet until the
device is ready to be installed.
Main gas connection
Take care that dirt cannot enter the gas control during
handling.
Ensure the gas flows in the same direction as the arrow on
the side of the combination gas control.
Pilot gas connection
Use a wrench to tighten fitting.
Do not use jointing compound.
Connect other end of tubing to pilot burner according to the
manufacturer's instructions.
ADJUSTMENT, CHECKOUT AND
MAINTENANCE VR4920M
IMPORTANT
Adjustments should be made by qualified persons
only.
If the appliance manufacturer supplies checkout
and/or service and maintenance instructions,
carefully follow them. If such instructions are not
provided, then follow the procedure as outlined
below.
Allow time for pressure to stabilize before making
adjustments.
It is recommended that the Modureg is operated a
few times to ensure correct setting.
Remove cap before adjustment.
Take care that after any adjustment the cap is
mounted.
WARNING
The minimum pressure setting must first be adjusted
to ensure that burner will safely light up, then
maximum pressure setting can be adjusted.
Any adjustment of minimum pressure setting
influences maximum pressure setting.
EN1R- -9181 0104R1- -NE
Table 1. Regulator outlet pressure range V7335A
Setting
Minimum outlet pressure range
(mbar)
Sidewards
1.5 ... 15
3 ... 25
4
Maximum outlet pressure range
(mbar)
Upwards
2 ... 15
(min setting + 3) ... 20
4 ... 25
(min setting + 5) ... 37
76
38
Pressure taps
The gas control is provided with a pressure tap of 9 mm outer
diameter at inlet and outlet side.
When checking the pressure undo the screw a half turn and
slip the tubing over the nipple.
Ensure that screw is retightened after making the test.
Pilot flame adjustment
The gas control is packed for shipment with pilot flow at
maximum. Refer to the pilot burner or appliance
manufacturer's instructions for recommended size of pilot
flame.
If adjustment is required turn pilot adjustment screw clockwise
to decrease or counter--clockwise to increase pilot flame.
Cap
Shaft
Adjustment screw (7 mm) for
maximum pressure setting
Adjustment screw (9 mm) for
minimum pressure setting
E "O"--ring
6.3 mm AMP
terminals
Fig. 3.
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