Honeywell L8124 Manual

Honeywell L8124 Manual

L8124E and L have large A compression fitting is available for applications where direct immersion of the sensing bulb is desired. T able 1 lists the various mo dels and their applications. L8124 can provide multizon e control by usin g a separate circula tor and R845 Relay for ea ch zone. L8124E an d L have large transformers and extra t erminals for sup plying power to low voltage valves. L8124L include s a large transforme r and extra terminals for low voltage zone valves. Circulator is indep endently contr olled by the the rmostat. WARNING Explosion Haza rd. Can cause seri ous injury, deat h or property damage. Use this product on ly in systems with a pressure relief valve. T able 1. Model Descriptio ns.Model Number Burne r Control Circuit Can Be Used For Multizone With Circulators a No.WARNING Electrical S hock Hazard. Can cause se vere injury, death or equipme nt damage. Disconnect power supply before beginning inst allation to preven t electri cal shoc k or equipment dama ge. IMPORT ANT 1. T erminals on these Aquastat Relays are approved for copper wire only. 2. Immersion well m ust fit sensing e lement and bulb must rest against bottom of well. Bend the tubing, if necessary, to hold the bulb against t he bottom of the well. Do not m ake a sharp bend in the tubing. A sh arp bend can produce a br eak in the tubing and cause loss of f ill. This condition will cau se the high and low limit cont rollers to be con tinuously made. Select models have an adjustable capillary length. See Fig. 1. Fig. 1. Adj usting the cap illary length. Mounting Each relay is suitable for use with an immersion we ll for insertion into th e boiler. (Check indiv idual OS numb er specifications to det ermine whether a well is supplied with the r elay.) Refer to fo rm 68-0040, We lls and F ittings for T emperature Controllers, to order well. A co mpression fitting is availab le for applicatio ns where dire ct immersion of the sensing bulb is desired. A 124904 Well Adapter (see Fig.

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2) can be ord ered sep arately to adapt so me other wells to th e mounting clam p. The boiler must be provided with a tapping that allows ho rizontal mounting of the well. It should b e located where b oiler water of average temper ature can c irculate around the well. 1. T urn off all power and drain the boiler. 2. If no tapping is pro vided, prepare on e, properly sized and thre aded, at the s elected locatio n. 3. Install the immersion well in the boiler tapping and tighten securely. NOTE: Do not use the case as a h andle to tighten. 4. Refill boiler and c heck for water le akage. 5. Loosen but do not rem ove the clam p screw on the bottom (L 8124A,E) or on top (L8 124C,L,M) of case. 6. Insert the eleme nt in the well until it bottoms. See Fig. 2. 7. Fit the case on to the well so that t he clamp on th e case slides ov er the flange on the well. Securely tighten clam p screw. WIRING WARNING Electrical S hock Hazard. Can cause se vere injury, death or equipme nt damage. Disconnect power before wiring to p revent electric al shock or equipme nt damage. All wiring must comply wit h local electrica l codes and ordinanc es. The li mits gi ven in the S pecific ations se ction must not be e xceeded when app lying this control. T erminals on these Aquastat Relays are approved for copper w ire onl y. Refer to the insert on the inside of the Aqua stat R elay cover or to T able 1 for electrical ratings and maximum load information. Use manufac turer instruction s when wiring c ontrol led equi pment or re fer to typical ho okup s in Fig. 3 thr ough 1 1. WARNING Explosion Haza rd. Can cause seve re injury, dea th or property damage. Use this product on ly in systems with a pressure relief valve. After the adap ter is installed, the existing wraparound wire en d may be reused to ma ke an electrical conn ection to the B1 terminal.Can cause ser i ous injur y, death or equipment damage. Use this product only in systems with a pressure relief valve.

Set the indicators o ver the selected temperature marks. The low limi t dif ferenti al is set b y turnin g the dif ferential adjustm ent knob to the desir ed amount of dif ferenti al. The ther mostat heat anti cipat or should be set at 2.0A. CHECKOUT Put the syst em into oper ation and observe eac h function through at leas t one complet e cycle. Be sure th e control operates as intend ed. Table 1 lists the various models and their applications. L8124 can provide multizone control by using a separate circulator and R845 Relay for each zone. L8124E and L have large transformers and extra terminals for supplying power to low voltage valves. L8124L includes a large transformer and extra terminals for low voltage zone valves. Circulator is independently controlled by the thermostat.Use this product only in systems with a pressure relief valve. Table 1. Model Descriptions. a Multizone control can be provided by using a separate circulator and R845 Relay for each zone. Model Number Burner Control Circuit Can Be Used For Multizone With Circulators a No.INSTALLATION with the relay.) Refer to form 68-0040, Wells and Fittings. Low Limit:L8124E and L have largeCirculator is independently controlled by the thermostat. High Limit:Can cause serious injury, death or propertyUse this product only in systems with a pressureTable 1. Model Descriptions. Model. NumberControl. CircuitValves Powered. Without Additional. Transformer. Can Be Used For. Multizone With. Circulatorsa. YesBurner Circuit. Same as L8124A,C,LCirculator CircuitNone. Multizone control can be provided by using a separate circulator and R845 Relay for each zone.

A compressionA 124904 Well AdapterThe boiler must beFailure to followCheck the ratings given in the instructions and onInstaller must be a trained, experienced serviceAfter installation is complete, check out productCan cause severe injury, death or equipmentDisconnect power supply before beginningBend the tubing, if necessary, to hold the bulb against theThis condition will cause the highCan cause severe injury, death or equipmentDisconnect power before wiring to preventAll wiring must comply with local electrical codes andTerminals on these Aquastat Relays are approved forFig. 3 through 11.Can cause severe injury, death or propertyUse this product only in systems with a pressureFig. 1. Adjusting the capillary length. Mounting. Each relay is suitable for use with an immersion well forLoosen but do not remove the clamp screw onInsert the element in the well until it bottoms. See Fig. 2. Fit the case onto the well so that the clamp on theSee Fig. 1.If no tapping is provided, prepare one, properlyInstall the immersion well in the boiler tapping andHigh Limit Controller. The high limit opens and turns off the burner when theThe high limitCan cause serious injury, death or equipmentUse this product only in systems with a pressureOn a temperature rise, with the adjustable differential atR-B break and R-W make temperature are the setpointSee Fig. 13.The high limit setting must beThe thermostat heat anticipator should be set at 2.0A.Be sure the controlAutomation and Control SolutionsAutomation and Control Solutions. HoneywellGolden Valley, MN 55422Scarborough, Ontario. Using the online preview, you can quickly view the contents and go to the page where you will find the solution to your problem with Honeywell AQUASTAT L8124A. To start viewing the user manual Honeywell AQUASTAT L8124A on full screen, use the button Fullscreen. However, if you do not want to take up too much of your disk space, you can always download it in the future from ManualsBase.

The option to print the manual has also been provided, and you can use it by clicking the link above - Print the manual. You do not have to print the entire manual Honeywell AQUASTAT L8124A but the selected pages only. paper. If you want to quickly view the content of pages found on the following pages of the manual, you can use them. Our Live Chat hours are:If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out. Features Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems. Provide multizone control by using a separate circulator and R845 Relay for each zone. Mount directly to boiler. Select models include large transformers and extra terminals for supplying power to low voltage zone valves. Require 24 Vac thermostat with heat anticipator set at 0.2 A (plus current draw of gas valve on L8124E). Product Specifications Description: High Limit Protection, Low Limit and Circulation Control Triple Aquastat Relay with High limit: 10 F fixed low limit: 10-25 F adj. Differential Application: High Limit Protection, Low Limit and Circulation Control Operating Range, Low Limit (F): 110 F to 220 F adj. Operating Range, Low Limit (C): 43 C to 104 C adj. Operating Range, High Limit (F): 130 F to 240 F adj. Operating Range, High Limit (C): 54 C to 116 C adj. Differential Temperature (F): High limit: 10 F fixed; low limit: 10-25 F adj. Maximum Operating Pressure (psi): 200 psi on outside of immersion well, 100 psi on capsule if inserted directly. Maximum Operating Pressure (kPa): 1378 kPa on outside of immersion well, 690 kPa on capsule if inserted directly. Maximum Ambient Temperature (C): 66 C at switches, 129 C at sensing element. Approvals, Underwriters Laboratories Inc: UL Listed (models with well): File No. MP466, Guide No. MBPR UL Component Recognized (models without well): File No. MP466, Guide No.

MBPR2 Approvals, Canadian StandardsAdd item to cart for lowest price.Manufacturer's warranty still applies.Join our mailing list to receive exclusive offers and coupons. We have no relationship with advertisers, products, or services discussed at this website. Contact us to suggest text changes and additions and, if you wish, to receive online listing and credit for that contribution. A programmable HI-DIFF is available on on some programmable aquastats such as And we watch the boiler relief valve to be sure we're not causing leakage there. If your TP valve was not leaking before and it begins to drip when you set up the HI to 200 F, step the HI back to 195 and try that setting. That keeps the LO temperature operating range as high as possible in the boiler and that in turn gives us the most heat stored in the boiler for making hot water through the tankless coil. The circulator will not run. If you make that mistake, you will lock out the circulator pump and your heating system will not work properly.The problem was that the. LO was set close to or even above the HI - the circulator pump never ran and hot heating water circulated but only very slowly by convection. Luckily for them, because their flow-control valve was either absent or not working, their home would indeed receive heat - but very slowly: their circulator pump had never run. It's been fixed, and fixed again thanks to reader Damian for suggesting further clarifications. Apologies for the delay. Comment Form is loading comments. Bottini Fuel, 2785 W Main St. Wappingers Falls NY, 12590-1576 But readers looking for specific aquastat control information should always first try the control manufacturer. Typical timer applications will cycle the pump at preset times, allowing the user to selectThese newer aquastat controllers are often used to replace the older Honeywell L8124A series that was and remains widely used, also available at www.honeywell.com. Macmillan Publishing Co.

, NY Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Carson Dunlop Associates' provides extensive home inspection education and report writing material. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. InspectAPedia.com editor Daniel Friedman is a contributing author. Or choose the The HOME REFERENCE eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. InspectAPedia.com editor Daniel Friedman is a contributing author. We have no relationship with advertisers, products, or services discussed at this website. The L7224U1002 provides status and diagnostic information through an LED display to enhance the diagnostic process. Buttons inside the control permit the service tech to scan through the control's settings as well as to change them, much like the functions on a programmable room thermostat. Five diagnostic LEDs inside the control provide additional diagnostic features, indicating (counterclockwise from upper left) EnviraCOM network active, Thermostat calling for heat, Burner on, Power to zone circulator interrupted (lockout), Circulator powered. This aquastat can provide multiple zone control as well.Models provide intermittent pilot or interrupted pilot with delayed main valve. Failure to read and follow all instructions carefully before installing or operating this control could cause injury, fire, damage, death. Honeywell has sales offices in all principal cities in the world and has manufacturing facilities in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

Honeywell Form Number 60-0450 7-75, residential division. Honeywell's latest product data for this type of control can be found in English at If the batteries fail the thermostat may fail to provide heating or cooling and the building may suffer accordingly. On 2019-01-24 by (mod) - camp trailer gas furnace won't light past the pilot Apologies for the delay. Comment Form is loading comments. Bottini Fuel, 2785 W Main St. Wappingers Falls NY, 12590-1576 Alan Carson is a past president of ASHI, the American Society of Home Inspectors. Carson Dunlop Associates' provides extensive home inspection education and report writing material. The text is intended as a reference guide to help building owners operate and maintain their home effectively. Field inspection worksheets are included at the back of the volume. Special Offer: For a 10% discount on any number of copies of the Home Reference Book purchased as a single order. InspectAPedia.com editor Daniel Friedman is a contributing author. Or choose the The HOME REFERENCE eBook for PCs, Macs, Kindle, iPad, iPhone, or Android Smart Phones. Special Offer: For a 5% discount on any number of copies of the Home Reference eBook purchased as a single order. InspectAPedia.com editor Daniel Friedman is a contributing author. Please check your inbox, and if you can’t find it, check your spam folder to make sure it didn't end up there. Please also check your spam folder. Please enable scripts and reload this page. Please contact Customer Care for assistance. The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.The error details have been logged by the service.

The aquastat monitors the water temperature in the boiler through the use of a copper bulb that stays in contact with the water inside the boiler and that shuts down the boiler automatically if the low- or high-temperature set point is exceeded. Understanding how the controller works can help users who are uncertain of why their boiler is shutting down unexpectedly. Once the water temperature reaches below the low-limit setting, the boiler burner turns on and begins to heat the water to maintain the desired water temperature. This is also factory pre-set or adjusted by the homeowner. The boiler burner automatically shuts off when the high-limit temperature is reached. The burner will restart when the water temperature falls within a differential temperature, usually about 10 degrees Fahrenheit, below the high-limit setting. This maintains a general set temperature for the water inside the boiler. If the aquastat is set at 200 degrees Fahrenheit as the high-limit setting and the pressure valve begins to leak, set the temperature back to 195 degrees Fahrenheit. Contact the aquastat manufacturer if the valve continues to leak at 195 degrees Fahrenheit or less. The circulator pump will lock out if the low-limit and high-limit points are too close or are accidentally mixed up, which prevents the boiler from working properly. Many home appliances require hot water that is at least 120 degrees Fahrenheit, which can make 120 degrees a favorable low temperature setting. The lowest differential is 10 but the recommended differential is 25, which will maintain higher boiler temperatures and offer more hot water than a differential of 10. She holds a Bachelor of Arts in history from San Francisco State University. Show Comments. All models pro vide high limit, low limit and circulator contr ol. T able 1 lists the various mo dels and their applications. L8124 can provide multizon e control by usin g a separate circula tor and R845 Relay for ea ch zone.

L8124E an d L have large transformers and extra t erminals for sup plying power to low voltage valves. L8124L include s a large transforme r and extra terminals for low voltage zone valves. Circulator is indep endently contr olled by the the rmostat. WARNING Explosion Haza rd. Can cause seri ous injury, deat h or property damage. Use this product on ly in systems with a pressure relief valve. T able 1. Model Descriptio ns.Model Number Burne r Control Circuit Can Be Used For Multizone With Circulators a No. All models provide high limit, low limit and circulator control. Table 1 lists the various models and their applications. A compression fitting is available for applications where direct immersion of the sensing bulb is desired. A 124904 Well Adapter (see Fig. 2) can be ordered separately to adapt some other wells to the mounting clamp. The boiler must be provided with a tapping that allows horizontal mounting of the well.