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Frequently Asked Questions


FAQs (Frequently Asked Questions & Answers)
Click on a question to be taken to the answer.

System Operation:

Q: Can I use anti-freeze to protect my system?

Q: I think my boiler water temperature is wrong. What are the proper temperature settings for my system?


General Product Information:

Q: How will I know what size boiler is appropriate for my house or business?

Q: How can I buy Weil-McLain comfort heating products?

Q: How can I obtain Weil-McLain product manuals?

Q: What are the MEA numbers for Weil-McLain products?


Problems and Troubleshooting:

Q: What should I do if my heating system is not working correctly?

Q: How can I get an expert from Weil-McLain to troubleshoot my boiler?

Q: I installed my own boiler. How do I get technical support?


Warranty Procedures:

Q: How do I file a warranty claim?

Q: Help, my boiler is leaking! Who do I call?

Q: How do I clean the boiler?



Answers:

Q: Can I use anti-freeze to protect my system?

A: Anti-freeze can be used with our boilers. We recommend using an anti-freeze designed for hydronic systems, formulated with inhibited propylene glycol, a non-toxic antifreeze. A solution of up to 50% can be used. No compounds containing petroleum should ever be used in your heating system. Do not use automotive anti-freeze.


Q: I think my boiler water temperature is wrong. What are the proper temperature settings for my system?

A: Aquastat settings for forced hot water systems: "average" setting is 180 degrees F. Can be raised as high as 210 degrees F., if needed in severe weather. For systems with coils to heat domestic hot water, high limit setting of 210 degrees F. with low limit setting of 190 degrees F. and differential setting of 15 is recommended for optimum amount of domestic hot water.


Q: How will I know what size boiler is appropriate for my house or business?

A: Your local heating professional should perform a heat loss estimate based upon the size and construction of your home before recommending a boiler size and model.


Q: How can I buy Weil-McLain comfort heating products?

A: Weil-McLain does not sell direct to consumers - our products are sold exclusively through our wholesale distributors.
· Contractors should contact our local wholesale distributor for pricing and availability.
· Consumers should contact professional heating contractors for price quotes.


Q: How can I obtain Weil-McLain product manuals?

A: Several product manuals are available for download. We will continue to add manuals to our website. However, if your manual is not listed in our electronic index, please click here to request a hard copy.


Q: What are the MEA numbers for Weil-McLain products?

A: Here's a list of MEA numbers for current and discontinued Weil-McLain boiler models in Adobe's PDF format. For more information about MEA numbers, contact the Technical Services help desk.


Q: What should I do if my heating system is not working correctly?

A: Please contact your local heating professional to troubleshoot your system. Your heating professional can contact a Weil-McLain Distributor or our Technical Service Department for additional assistance.


Q: How can I get an expert from Weil-McLain to troubleshoot my boiler?

A: Weil-McLain does not employ heating technicians who can come out and repair your boiler, nor do we have factory-authorized servicers. We rely upon independent heating professionals in your area to install, maintain and troubleshoot Weil-McLain products. Please contact a heating professional in your area. If needed, your heating contractor can contact our area office or our technical service department for assistance with trouble-shooting problems.


Q: I installed my own boiler. How do I get technical support?

A: Homeowners, who are not professional heating contractors, who have installed their own boilers, need to contact the distributor/dealer who sold them the boiler for technical support and warranty action.


Q: How do I file a warranty claim?

A: Your professional heating contractor should return Warranty items to our local area wholesale distributor for credit. Weil-McLain does not accept alleged warranty items directly from consumers or heating contractors.


Q: Help, my boiler is leaking! Who do I call?

A: If your boiler is leaking, contact either your installer or the professional heating contractor of your choice. If the unit needs to be replaced immediately, your heating contractor should obtain the appropriate cast iron section block or boiler from our local wholesale distributor. Warranty is not approved sight unseen, nor can our field representatives make any type of determination while the boiler is still installed. For warranty consideration, the leaking boiler or section block should be returned to the same wholesale distributor where the replacement was purchased. Our field representative will then do a thorough inspection at the wholesale distributor. At that time, he will process a claim credit or denial, based on his findings. Credits for warranty are processed through the wholesale distributor; Weil-McLain does not reimburse consumers directly.


Q: How do I clean the boiler?

Steam Boilers
To clean a steam boiler, use one pound of trisodium phosphate for every fifty gallons of water content.  Heat the boiler to 180°F; hold at 180°F for two hours.  Do not allow the boiler to make steam.  After two hours, drain the boiler and fill with fresh makeup water.  Water treatment chemicals should be thoroughly reviewed before they are introduced into the boiler.  Foaming agents that will interfere with steam action are of particular concern.  Sodium carbonate (one pound for every 30 gallons) or sodium hydroxide (lye) (one pound for every fifty gallons) may be used.

Check pH level after cleaning.  It should be between 7 and 8.5.  A small amount of cleaner may be added to adjust the pH up to the proper range.

DO NOT use petroleum based products in the boiler.

Cast Iron Water Boilers
Use one pound of trisodium phosphate for every fifty gallons of water content.  Fill, vent and circulate the system with above mixture, allowing it to reach design or operating temperature, if possible.  After circulating a few hours, drain the system completely and refill with fresh water.  Usually, enough of the cleaner will adhere to the piping to give an alkaline solution satisfactory for operation; a pH reading between 7 to 8.5.  Sodium carbonate (one pound for every 30 gallons of water content) or sodium hydroxide (lye) (one pound for every 50 gallons) may be used.

Check pH level after cleaning.  It should be between 7 and 8.5.  A small amount of cleaner maybe added to adjust the pH up to the proper range.

DO NOT use petroleum based products in the boiler.