Honeywell RA890F Protectorelay Primary Control Скачать руководство пользователя страница 7 | Manualshive

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Honeywell RA890F Protectorelay Primary Control Скачать руководство пользователя страница 7

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60-2034—7

RA890F

INSTALLATION • OPERATION

MOUNT RA890F

Disconnect power supply.
Remove relay cover (see Fig. 6) and position the RA890F

over the Q270A Subbase. Start all ten mounting screws and
tighten uniformly. These screws complete electrical circuits
(terminal 1 excepted) and hold the RA890F to the subbase.

As shipped from the factory, the RA890F is suitable for

use with interrupted or intermittent systems.

Fig. 6—RA890F and Q270A Subbase.

FOR STANDING PILOT SYSTEMS ONLY

For use with standing pilot systems. Clip the pilot link

(wire loop in Fig. 7) as follows:

1. Turn off power.
2. Clip pilot link with side cutters. Do not twist off

because damage to circuit board can result. Remove any
pieces of the wire.

3. Be sure there is electrical clearance between the two

ends of the link, and from link ends to the test jack or relay
frame. Then restore power.

Fig. 7—Location of arc gap protector on
RA890F.

TERMINAL
BLOCKS

FLAME
CURRENT
TEST JACK

COVER

THUMBSCREW

SAFETY SWITCH
RESET
PUSHBUTTON

LOAD RELAY (1K)

Q270A
SUBBASE

M8766

FLAME RELAY (2K)

CAPTIVE
MOUNTING
SCREWS (10)

ARC GAP
PROTECTOR

OPTIONAL
ALARM
CONTACT (3)

PILOT LINK JUMPER WIRE
(0N BASE ALONGSIDE TEST JACK)

TEST
JACK

PILOT LINK

ARC GAP
PROTECTOR

M8767

Operation

NORMAL OPERATION SUMMARY

Normal control operation is summarized below. Refer to

Fig. 5 for the internal schematic of the control.

1. Call for heat—Load relay pulls in after a slight delay

(flame relay must be out), ignition starts, pilot valve or burner
motor is powered. Safety switch heats.

2. Flame proved—Flame relay pulls in, safety switch

heater is de-energized, main valve is powered, ignition is cut
off (when used for interrupted ignition).

3. Call for heat satisfied—Load relay drops out, fuel

valves close, burner motor stops, and flame relay drops out.

NOTE: The pull-in of the load relay is delayed by a ther-

mistor with a nominal delay time of 3 to 5 seconds. The
thermistor is affected by ambient temperature, and the
delay time may be as short as 2 seconds when the
temperature is high and as long as 30 seconds when the
temperature is low. As the thermistor warms up, the 1K
relay might hum slightly before it pulls in. This is normal.

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Содержание RA890F Protectorelay Primary Control

Страница 1: ... required during Off cycle no tube to warm up before starting Push to reset safety switch in dust resistant enclosure Built inprotectionagainstignitioncrossoverinflame 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...

Страница 2: ...r 1 0A at 120 Vac in suitable wiring enclosure Low Voltage Control Circuit T T 0 3A Ordering Information When purchasing replacement and modernization products from your TRADELINE wholesaler or your distributor refer to the TRADELINE catalog or price sheets for complete ordering number or specify 1 Order number standard or TRADELINE 2 Voltage and frequency 3 Flame response time 4 Safety switch tim...

Страница 3: ...TE All devices meeting UL components recognition have the following symbol Replacement exchange controls that meet current UL requirements are identified with the term REMFR D following the listing or component recognition mark Canadian Standards Association Certified 120V models only File No LR1620 Factory Mutual Approved Report No 17678 19417 and 19784 American Gas Association Design Certified f...

Страница 4: ...nt temperature is within the specified rating Mount the subbase so the top and bottom are horizontal and the back is vertical The subbase can lean backward as much as 45 degrees when necessary See Fig 1 Fig 1 Mounting subbase in in mm M8681 HORIZONTAL VERTICAL 2 7 8 73 0 4 1 8 104 8 KNOCKOUTS 9 FOR 1 2 IN 13 CONDUIT 45 DEGREES MAXIMUM LEAN WIRE SUBBASE 1 Disconnect power supply see Fig 2 before ma...

Страница 5: ... ALARM TERMINALS ARE ENERGIZED THROUGH RA890 SAFETY SWITCH ALARM WILL NOT SOUND UNTIL SAFETY SWITCH TRIPS OUT POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED FOR RA890E REPLACEMENT LEAVE POWER CONNECTED TO TERMINAL 1 SUBBASE WIRING CHANGES ARE NOT REQUIRED SOME AUTHORITIES HAVING JURISDICTION PROHIBIT THE WIRING OF ANY LIMIT OR OPERATING CONTACTS IN SERIES WITH THE MAIN F...

Страница 6: ...ON AS REQUIRED RA890F IS POWERED AT TERMINAL 6 ONLY WHEN REPLACING ANOTHER MODEL LEAVE HOT LINE L1 CONNECTED TO TERMINAL 1 EVEN THROUGH IT IS NOT NECESSARY FOR OPERATION MAY USE LINE OR LOW VOLTAGE CONTROLLER IF LINE VOLTAGE CONTROLLER IS USED CONNECT IT BETWEEN THE LIMIT CONTROLLER AND TERMINAL 6 JUMPER T T FOR INTERMITTENT IGNITION CONNECT TO TERMINAL 3 OPENING OF A LIMIT CONTROL OR LINE VOLTAGE...

Страница 7: ...SET PUSHBUTTON LOAD RELAY 1K Q270A SUBBASE M8766 FLAME RELAY 2K CAPTIVE MOUNTING SCREWS 10 ARC GAP PROTECTOR OPTIONAL ALARM CONTACT 3 PILOT LINK JUMPER WIRE 0N BASE ALONGSIDE TEST JACK TEST JACK PILOT LINK ARC GAP PROTECTOR M8767 Operation NORMAL OPERATION SUMMARY Normal control operation is summarized below Refer to Fig 5 for the internal schematic of the control 1 Call for heat Load relay pulls ...

Страница 8: ...m all checkout tests indicated below Flame Current Check all installations PilotTurndownTest allinstallationsthatrequireproofof pilot before main fuel valve is opened Safe Shutdown Checks Flame failure power failure limit action all installations Hot Refractory Hold In photocell applications only FLAME CURRENT CHECK The flame current check is the best indicator of proper flame detector application...

Страница 9: ... on the axis of a pilot flame or b Adjusting a flame rod detector so that a larger mini mum pilot is required CAUTION If the pilot needs to be adjusted and rechecked allow five minutes for the purge of unburned gases in the firebox before proceeding to the next step 10 Repeat the entire turndown test until the flame is established promptly in step 7 11 Turn up the pilot to full flame at the comple...

Страница 10: ...ners tested were found to leave deposits on the contact surfaces or to attack RA890 chassis parts Troubleshooting Whentroubleoccursintheheatingsystemanditscauseis not immediately apparent the service technician can apply the following step by step checkout to locate the cause of most problems Refer to Fig 3 and 4 for terminal locations and to Fig 6 for location of component parts CAUTION Use extre...

Страница 11: ... PROBLEMS Relay Chatter Load relay chatter can result from extreme low voltage notifypowercompany orfromalooseconnection tighten Flame relay chatter may result from improper combus tion adjust burner or soot or carbon on flame detector clean and correct the cause Difficulty Resetting Safety Switch 30 Second Safety Switch Models _ Ambienttemperaturemaybebelow 10 F 12 C Prob lem is corrected by warm...

Страница 12: ...rol Home and Building Control Helping You Control Your World Honeywell Inc Honeywell Limited Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley MN 55422 Scarborough Ontario M1P 2V9 Printed in U S A QUALITY IS KEY ...

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