Specifications

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When it comes to burner and boiler controls, Honeywell has set the standard for
oil-fired furnaces, boilers and water heaters. With a proven track record and a large
installed base, there is a service part for nearly any application.
Residential Combustion/Oil Burner/Boiler Controls
R7284U1004
Universal Digital Oil Primary
•Fieldadjustablesafety,valve-ondelayandburnermotor-offdelayforuniversalapplication
•16charactertwolinetrilingualdisplayprovidessimpleprogrammingandeasyto
read diagnostics
•Advanceddiagnosticsthatdirectthetechniciantothelikelycauseofignitionfailure
L7224U
Universal Oil Electronic Aquastat
®
•OutdoorresetfunctionalitywhenconnectedtoW8735S1000
•DiagnosticLED,+/-2˚Faccuracyandfasterresponsetimes
•Easyinstallationwithmultipleknockouts,multizonecontrol
•Adjustablehighandlowlimitdifferential,highlimitonlyorhighpluslowlimitallinone
Honeywell AquaReset
®
Outdoor Reset Control
•CombinesuniversalelectronicoilAquastat
®
with a simple to install energy saving
outdoor reset solution
•Systemset-upthroughmulti-functionAquastatdisplay
•AvailableasacompletesystemoroutdoorresetreadyAquastataddonkit
•Designedtoimproveboilerefficiency
Honeywell AquaReset
®
Product Selection
Product Name Part Number Includes Typical Applications
Honeywell AquaReset System L7224R1000
L7224U Aquastat, Honeywell AquaReset Module and
Wired Sensor
Install as a replacement when an existing boiler needs
a new control.
2
Honeywell AquaReset Kit W8735S1000 Honeywell AquaReset Module and Wired Sensor
Upsell as an add-on when installing a new boiler that
comes from the OEM with an enabled L7224U or
L7248 Aquastat.
2
Honeywell Domestic Hot Water Kit W8735S1008 DHW Module and Wired Pipe Temperature Sensor
Required to enable domestic hot water override on
some applications.
3
Selection Guide
Product Number
Fuel Low Limit High Limit Features and Functions
Gas Oil
Operating Range,
Low Limit
Differential
Temperature,
Low Limit
Operating Range,
High Limit
Differential
Temperature,
High Limit
Switching
Action
Anticipator
Setting
Mounting
L7224R1000
and
L7224U1002
• 110˚ to 220˚ F 10˚ to 25˚ F adj. 130˚ to 240˚ F 5˚ to 20˚ F adj.
3 SPST:
High and
Low Limit,
Circulator
0.1 A V/H/F
Cross-Reference Guide
OS Number Replaces Mounting Orientation High Limit High Limit Difference Low Limit Low Limit Difference
L7224R1000
and
L7224U1002
L7124A1017, L7124A1025,
L7224A1008, L7224A1016,
L8124A1007, L8124A1015,
L8124A1049, L8124A1098,
L8124A1106, L8124A1114,
L8124A1122, L8124A1130,
L8124A1155
Well Mounted – Vertical 130˚ to 240˚ F 10˚ F 110˚ to 220˚ F 10˚ to 25˚ F
L7124C1005, L7224C1004,
L8124C1003, L8124C1011,
L8124C1029, L8124C1094,
L8124C1102
Well Mounted – Horizontal 130˚ to 240˚ F 10˚ F 110˚ to 220˚ F 10˚ to 25˚ F
L7148A1019, L7248C1014,
L8148A1009, L8148A1025,
L8148A1033, L8148A1058,
L8148A1066, L8148A1074,
L8148A1082, L8148A1090,
L8148A1116, L8148A1157
Well Mounted – Horizontal 180˚ to 220˚ F 15˚ F
L7148A1035, L7248C1006,
L8148A1017, L8148A1065,
L8148A1124, L8148A1140
Well Mounted – Horizontal 140˚ to 240˚ F 15˚ F
L7148A1050, L7248A1000,
L8148A1157
Well Mounted – Vertical 180˚ to 220˚ F 15˚ F
L7248C1022
Flush Mounted – Vertical 140˚ to 240˚ F 15˚ F