Honeywell R4795A specifications Specifications, Ordering Information

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R4795A

SPECIFICATIONS • ORDERING INFORMATION

Specifications

R4795A Flame Safeguard Primary Control recycles once after flame failure to try to re-establish pilot before lockout. Use with R7289A Amplifier and rectifying flame rod, recti- fying photocell, or C7012A,C Purple Peeper Ultraviolet Flame Detector; or with R7290A Amplifier and C7027A, C7035A, or C7044A Minipeeper Ultraviolet Flame Detector.

AMBIENT TEMPERATURE RATINGS:

Minimum: -20°F (-29°C). Special models to -40°F (-40°C).

Maximum: +125°F (52°C) at 60 Hz; +115°F (46°C) at 50 Hz. -40°F (-40°C) models have maximum ambient of +115°F (46°C) at 60 Hz, +105°F (40°C) at 50 Hz. Subtract 10°F (6°C) when optional alarm contacts are included.

ELECTRICAL RATINGS:

Voltage and Frequency: Single voltage models only: 100V, 120V, 200V, 220V, 50/60 Hz. As ordered.

Power Consumption (at 60 Hz):

6.0W max using rectifying flame rod or photocell.

8.0W max using ultraviolet flame detector.

FLAME FAILURE RESPONSE TIME: 0.8 or 3 seconds nominal, as ordered.

SAFETY SWITCH TIMING (LOCKOUT TIMING): 15 sec- onds nominal.

RECYCLE TIME: Almost immediate after Flame Failure Response Time.

FLAME ESTABLISHING PERIOD: May last up to safety switch lockout time or until flame is recognized by device.

ALARM CONTACTS (Optional): Isolated spdt contacts. Male quick-connect terminals (female quick-connects included). See Terminal Ratings. –40°F (–40°C) models have isolated spdt alarm contacts.

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.

3.

Flame failure response time.

2.

Voltage and frequency.

4.

Alarm contacts, if desired (included with -40°F [-40°C] models.)

Order separately:

 

 

1.

R7289A Rectification Amplifier,

3.

Plug-in prepurge timer model number

 

or R7290A Ultraviolet Amplifier.

 

and timing (7, 10, 30, 60, or 90 seconds).

 

Specify flame failure response time.

4.

Q270A1024 Mounting Subbase.

2.

Flame detector to match amplifier.

5.

Accessories, if desired.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1.Your local Honeywell Home and Building Control sales office (check white pages of phone directory).

2.Home and Building Control Customer Logistics Honeywell Inc., 1985 Douglas Drive North Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Controls Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International sales and service offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Taiwan, United Kingdom, U.S.A.

60-2285—7

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Contents R4795A Flame Safeguard Primary Controls Specifications Ordering InformationTerminal Load Rating ApprovalsLocation InstallationWiring to Subbase Wiring Hookups Retrofitting R4795Alarm Contacts R4795C ReplacementFlame Detector Wiring Replacing RA890E,F,G with R4795AMounting R4795 On Subbase C7027, C7035, or C7044 Ultraviolet Flame DetectorPreliminary Inspection CheckoutCheckout Summary Flame Current Check Pilot Turndown TestSafe Shutdown Checks Power FailureIgnition Spark Response Test UV Detectors Limit ActionOperation TroubleshootingSafety Operation Normal Operation Refer toRelay 3K pulls in but the burner motor does not start Troubleshooting ProceduresRelay 3K does not pull in on a call for heat Relay 2K remains in after flame is extinguishedPeriodic Maintenance ServiceMiscellaneous problems Contact CleaningService 60-2285-7 Home and Building Control