Cal Flame B-270 Specifiche Scaricare il pdf

1 60-2034—7

RA890F

Flame Safeguard

Primary Control

The RA890F Protectorelay™ Primary Control

is a nonprogramming, amplifying relay that pro-

vides solid state electronic flame safeguard pro-

tection for industrial and commercial gas, oil, or

combination gas-oil burners.

■ Employs rectification principle of electronic flame

detection using a flame rod, rectifying photocell, or

C7012A,C Ultraviolet Flame Detector.

■ Clipping pilot link jumper wire permits use with

standing pilots.

■ Can directly replace RA890E and mount on same

Q270A Subbase.

■ Solid state circuitry eliminates vacuum tube replace-

ment and increases resistance to vibration. Power

application not required during Off cycle; no tube to

warm up before starting.

■ Push-to-reset safety switch in dust-resistant enclosure.

■ Built-in protection against ignition crossover in flame

rod systems.

■ Does not start if flame-simulating failure occurs in

flame detector circuit.

■ Automatic safety shutdown if flame fails on start, or

if flame not re-established after flame failure.

■ Flame signal current is directly measurable at test

jack.

■ Line or 24 volt, automatic or manual controller can be

used. (Manual controller must open circuit on either

power or flame failure.)

■ Captive mounting screws allow easy mounting and

removal. Thermoplastic mounting base.

■ Optional alarm circuit indicates safety shutdown.

S.Y. • Rev. 11-94 • ©Honeywell Inc. 1994

60-2034-7

CONTENTS

Specifications ................................................. 2

Ordering Information ..................................... 2

Installation ..................................................... 4

Operation ....................................................... 7

Checkout......................................................... 8

Service .......................................................... 10

Troubleshooting and Maintenance ..............10

1 2 3 4 5 6 ... 11 12

Sommario

Pagina 1

1 60-2034—7RA890FFlame SafeguardPrimary ControlThe RA890F Protectorelay™ Primary Controlis a nonprogramming, amplifying relay that pro-vides solid sta

Pagina 2 - Ordering Information

60-2034—7 10RA890FSERVICE • TROUBLESHOOTINGServiceGENERAL SERVICE1. Only qualified personnel should attempt to serviceheating equipment or controls.2.

Pagina 3 - 30 sec safety switch +10 -12

11 60-2034—7RA890FTROUBLESHOOTINGterminal 6 with the controller calling for heat. If there ispower at terminal 6 and a line voltage controller is used

Pagina 4 - Installation

60-2034—7 12Home and Building Control Home and Building Control Helping You Control Your WorldHoneywell Inc. Honeywell Limited—Honeywell Limitée1985 D

Pagina 5 - Fig. 2—Flame detector wiring

60-2034—7 2RA890FSPECIFICATIONS • ORDERING INFORMATIONSpecif icationsTRADELINE® MODELSTRADELINE® models of this device are available. Theyare select

Pagina 6 - INSTALLATION

3 60-2034—7RA890FSPECIFICATIONSNOTE: Allowable inrush can be up to ten times the pilotduty rating.EXAMPLE: Pilot duty rating = 25 VA.At 120V, running

Pagina 7 - Operation

60-2034—7 4RA890FINSTALLATIONInstallationWHEN INSTALLING THIS PRODUCT…1. Read these instructions carefully. Failure to fol-low them could damage the p

Pagina 8 - Checkout

5 60-2034—7RA890FINSTALLATIONIMPORTANT: Do not run high voltage ignition transformerwires in the same conduit with the flame detectorwiring.IMPORTANT:

Pagina 9

60-2034—7 6RA890FINSTALLATIONFig. 4—Oil system with interrupted ignition.M875312345POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS R

Pagina 10 - Troubleshooting

7 60-2034—7RA890FINSTALLATION • OPERATIONMOUNT RA890FDisconnect power supply.Remove relay cover (see Fig. 6) and position the RA890Fover the Q270A Sub

Pagina 11

60-2034—7 8RA890FCHECKOUTCheckoutIF A STEADY READING OF AT LEAST MINIMUMSTRENGTH CANNOT BE OBTAINED, ONE OR MOREOF THE FOLLOWING CONDITIONS CAN EXIST:

Pagina 12 - QUALITY IS KEY

9 60-2034—7RA890FCHECKOUTPILOT TURNDOWN TESTCAUTIONThe pilot turndown test should be performed onlyby qualified personnel and the instructions shouldb