Honeywell VR4920Z 1000 Скачать руководство пользователя страница 7

7

EN1R--9181 0104R1--NE

Adjusting minimum pressure setting (see fig. 4. page 6)

Connect a suitable pressure gauge to pipe line or to outlet

pressure tap of gas control concerned, to measure burner

pressure (measuring point must be as near to burner as

possible).

Disconnect electrical connection of High--Low regulator.

Set gas control in operation and wait until an outlet

pressure is recorded on the pressure gauge.

When minimum pressure setting needs adjustment, then

use a 3.5 mm screw driver to turn adjustment screw for

minimum pressure setting clockwise to increase or

counter--clockwise to decrease pressure, until desired

minimum burner pressure is obtained.

Wire High--Low regulator coil in circuit.

Check

maximum

pressure setting and re--adjust if

necessary. Check minimum pressure setting again.

When High and Low pressure settings are correct, replace

cap

Checkout

Set appliance in operation after any adjustment and observe

several complete cycles to ensure that all burner components

function correctly.

Maintenance and service

Under normal circumstances no maintenance or service is

required.

Dismounting and remounting flanges

Though by careful handling the “O”--rings could be re--used

when they are undamaged, it is advisable to use new

“O”--rings to be sure to have a reliable tight connection.

Fig. 5.

Содержание VR4920Z 1000

Страница 1: ...ed to guarantee good burner performance in case the modulating control should become out of range The VR4920M is designed to work together with the W9335 modulating Modureg control W4115 logic control T7335A thermistor temperature sensor and an advanced range of micro computer based modulating controls The VR4920P provides the following functions Servo pressure regulation Outlet pressure is held a...

Страница 2: ...et B Outlet C Inlet pressure tap D Outlet pressure tap E 6 3 mm terminals G Mounting holes M5 for connecting flanges H Earth screw K Pilot outlet connection L Pilot flow adjustment screw M Optional for inlet pressure tap 1 8 BSPT Fig 2 Dimensions VR4929M VR4920P ...

Страница 3: ...nlet and outlet with an approved leak detection fluid If another gas leak is detected tighten adapter screws joints and pipe connections Replace the part if gas leak can not be stopped CAUTION Keep leak detection fluid away from electrical connections SPECIFICATIONS VR4920M Model VR4920M line voltage gas control fast opening with electric modulating regulator V7335A Ambient temperature 0 70 _C Min...

Страница 4: ...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 settin...

Страница 5: ...e gauge to pipe line or to outlet pressure tap of gas control concerned to measure burner pressure measuring point must be as near to burner as possible Energize operator set control in operation and wait until an outlet pressure is recorded on pressure gauge Make sure Modureg is wired in the circuit Bring system in fixed setting mode Adjust current as low as needed to obtain the lowest pressure b...

Страница 6: ... removed by putting a small screw driver in one of the slots and lifting the cap carefully while at the same time supporting the cap opposite to the screw driver see fig 5 page 7 WARNING Maximum pressure setting must first be adjusted then minimum pressure setting can be adjusted Any adjustment of maximum pressure setting influences minimum pressure setting Never adjust the maximum setting above t...

Страница 7: ...wise to increase or counter clockwise to decrease pressure until desired minimum burner pressure is obtained Wire High Low regulator coil in circuit Check maximum pressure setting and re adjust if necessary Check minimum pressure setting again When High and Low pressure settings are correct replace cap Checkout Set appliance in operation after any adjustment and observe several complete cycles to ...

Страница 8: ...R 9181 0104R1 NE Home and Building Control Combustion Controls Center Europe Honeywell BV Phileas Foggstraat 7 7821 AJ Emmen The Netherlands Tel 31 591 695911 Fax 31 591 695200 http europe hbc honeywell com ...

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