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Weil McLain Ultra Series 2 Gas Fired Water Boiler

The Ultra Series 2 Gas Fired Boiler is equipped with the patented PhD technology from Weil McLain. The PhD stands for Precision Hydronic Data technology; this technology has a smart system that brings the PhD heating and hot water requirements, while bringing the most efficiency by determining the data parameters of your home heating system.
Weil McLain Ultra Series 2 Gas Fired Water Boiler

The Ultra Series 2 Gas Fired Water Boiler has a cast aluminum heat exchanger, a burner that is made with a high quality stainless steel construction, and the burner uses a factory mixed air and gas, which offers a wider assortment of firing rates. This will save money as you won’t need to fire up the boiler as much as you would on any other boiler system. It also has an Ultra Control Mode; this means that the control module answers to the signals from the thermostat, water supply, return water sensors, and the flue gas sensor. Almost all of the sensors in the Ultra 2 Series answer and respond to the Ultra Control Mode. Everything is kept neatly in this package.The boiler transformer installed in the Ultra Series 2 is designed to decrease the amount of electrical voltage used in the line. It has a range of 120 vac to 24 vac.
Weil McLain Ultra Series 2 Gas Fired Water Boiler
The 24 vac controls the gas valve and the blower signal. The front door of the boiler is designed to be sealed to the boiler assembly around the whole boiler. Some other boilers are designed partially around the boiler. The Ultra 2 Series Boiler has a P/T temperature sensor that is installed on the pressure temperature gauge, and can be installed into the outlet water pipe. Some other standard features on the Ultra Series 2 are the Boiler Drain Valve, the Data Port, the Air Intake Adapter, and the Venturi, which is designed to act as a vacuum when the air comes through the venturi. This device is used to help with the quality of the airflow.

When you are working with the operation of the boiler, there are just some things that you should know. You should not block the flow of combustion or, any ventilation to the boiler. The heat exchanger is constructed with aluminum and needs the pH system, which should always read between 7.0 and 8.5. The water chemistry should always be checked when the boiler is serviced. There are easy to read electronic display buttons on the Ultra 2 Series Boiler.

The display has a 4 number display where you can access the heating temperature setting, you can see the outlet water temp, and all other operating conditions. You can also see the boiler status, shutdown, and any lock out codes, which makes troubleshooting problems easy. When you have someone install these boilers, you will need to know that the clearance for hot water pipes is 1/2″ from all combustible materials. For the vent pipe the clearance has to be at least 0.20″. You should have 12″ of maximum ceiling enclosure and a 12″ maximum above the floor enclosure. By ensuring the proper clearances you can look forward to a stress free installation.


69 Responses to “Weil McLain Ultra Series 2 Gas Fired Water Boiler”

  1. Jim Nordloh says:

    I have a Mcclain ultra. The boiler seems to short cycle, can not hold a temperature, and displays an error 37 code. Where do I go to crack these codes? I also would like to know some beginning parimeters to set the boiler temps just as goog starting point and can adjust from there.

    Thanks, Jim

  2. Charlie Marc says:

    My Ultra 150 is 5 years old and has been nothing but problems, expensive problems. Recently it has started giving me a E – 18 error code. Everyday I have to reset the control. Can’t trust it’s operation, which means someone has to check it twice daily. Thinking about starting a class action because I am not alone and Weil Mc Clain ignors calls for help. If your looking to conserve energy, it’s great doesn’t cost a thing when in error mode. If your looking to empty your wallet Weil Mc Clain has a bridge for you.

    Fed up and cold

    Charlie

  3. Sonal Makim says:

    My Ultra is five years old and we just found out that the heat exchanger has corroded in multiple places. WM will only replace this part with the same aluminum part and will not cover any labor. They have not been particularly helpful and do not seem to stand behind their product. Has anyone else had this issue? We are trying to determine if we should take a chance on replacing this part. Even the rep admitted that the same thing will probably happen. Thank you.

  4. we had a weil mclain installed 3 months ago, had service rep out and he replace control and other parts. Still have a high pitched sound which they say cannot do anything for. Does anyone else have this proble? Ears are ringing. Also our furnace room is closet sized and it heats the room to 90 to 95 degrees. Told we could put a solid door on room to muffle noise now they are saying we need to vent the door for heat. Does anyone have this problem. Wish we woul’ve found this web site sooner.

  5. Rick DePaulo says:

    My ultra went into lockout —do to a power outage –out in the street—
    thus no heat until the reset button on the boiler is pressed—
    thus if it was in winter — all my pipes would have frozen and burst –
    if I was at work or on vacation

    Weil McLain said for me to install a Time Delay Relay as a fix.

    of course f something happens to the time delay relay they could blame that
    instead of there boiler should my heat system go introuble again

  6. No Audible Alarms says:

    The unit fails to generate a piezo buzzer type of low beeping or audible alarm noise when in E lockout ofn the Ultra 105′s if it did one would no a trouble existed sooner — currently the only way to know is when room temperature in the hous edrops down –thus
    one doesn’t have the time one could have to get the plumber and emergency parts in the winter months —one could have been home and not known the trouble existed and then left for the day —- an audible alarm at and inside the boiler could be heard through the floors and would be of value on something like this that has so many problems — relative to things that can go wrong with it

  7. MARK JERRY says:

    I WAS TOLD BY W/M REP THAT MY HEAT EXCHANGER HAS BUILT UP RESIDUE FROM HARD WATER. HOW DO I CLEAN IT? AND WHAT PRODUCT CAN I ADD TO WATER INSIDE BOILER TO CLEAN IT?

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