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Welcome to ZOZEN

ZOZEN is one of the best modern boiler manufacturers in China, our products include steam boilers, hot water boilers and thermal oil heaters. ZOZEN boiler is located in Wuxi, covers 150 thousand square meters of production area, equipped with first-class production equipment, passed the ISO9001:2000 international quality system certification. The company gained the " S " and " U " steel seal from ASME of US.

Customer service

If you run into any problems with the boiler, please contact us directly by email or fill out the online service request. We will do our best to resolve any problems you might have within 24 hours.

In case of special condition, ZOZEN will forward your request to one of its partnered sales representatives depending on the country and state. The local maintenance personnel will arrive at the customer site as soon as possible.


Top 10 Boiler Problems - bouldenbrothers.c

Boiler Keeps Turning Off; Cause: Unfortunately, many issues can cause your boiler to shut off regularly. Low water pressure, thermostat problems, air and water mis-circulation, or a closed water valve can cause your boiler to shut off. A pump circulation issue may also be to blame if hot water is not reaching the top of the radiator.

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What is the safe pressure for a hot-water-heatin

A member of the Wall community asks this question: What is the "safe" operating pressure in PSI for a hot-water boiler heating system, and what is the "safe" range in terms of temperature for boiler operation? One member responds: The highest pressure the boiler should ever see is stamped on the boiler tag - Usually 30- or 50-psi.

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Boiler *constantly* losing pressure, even when not i

Boiler *constantly* losing pressure, even when not in use. This happens even when there's been no demand for heating or hot water during that time. I've checked what I assume has to be the PRV outlet pipe for leaks, and I have noticed the odd drop, but no-where near what I'd expect for this level of loss. (It means that when the water

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Boiler losing pressure twice a day HEL

2011-11-17 · Discuss Boiler losing pressure twice a day HELP!!! in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net. kaput. he then said that a cheap way of a repair is to fit an external expansion unit in the airing cupboard where the hot water tank is but he couldn't find a central heating pipe due to his lack of knowledge on the water

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Boiler Keeps Switching Itself Off | DHS Heating Brist

2019-10-11 · If your boiler's pump is faulty, then it can cause your boiler to switch off. As a pump is used to move water around the central heating system, if it is not working properly, then hot water could just stay in the boiler rather than be moved around the system.

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boiler keeps losing water pressure | PlumbersForums.n

2011-4-20 · hi. my boiler keeps losing water pressure. i keep having to top up the water pressure each day. It is taking approx 24 hours for the water pressure to fall from 1.5 to 0 on the water pressure meter. Also, ive noticed that water is bubbling up in shower and water is coming up from the outside drains. So i guess they need unblocking.

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boiler keeps losing water pressure | PlumbersForums.n

2011-4-20 · hi. my boiler keeps losing water pressure. i keep having to top up the water pressure each day. It is taking approx 24 hours for the water pressure to fall from 1.5 to 0 on the water pressure meter. Also, ive noticed that water is bubbling up in shower and water is coming up from the outside drains. So i guess they need unblocking.

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Boiler pressure keeps dropping ? What to check

Boiler pressure keeps dropping ? What to look for, and how to fix. as we are talking about losing water pressure on the central heating system here .If your combi boiler is losing pressure on your domestic hot water side of the boiler ( this is you hot water that is provided to your hot water taps, showers or bath taps ) then this will be

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Combi boiler losing pressure | Screwfix Communit

2014-10-15 · Combi boiler losing pressure. Discussion in 'Plumbers' Talk' started by Rebel49, Oct 13 Whether the exchanger is more likely to leak when hot - I dunno. Possibly. I chust dunno. For example, if your new expansion vessel wasn't set up properly or has since leaked air, then the system water pressure will characteristically rise as the

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Why Does My Combi Boiler Keep Losing Pressur

Why Does My Combi Boiler Keep Losing Pressure? This is a question we get a lot from our customers. etc. If the expansion vessel is faulty, chances are it will not be able to handle the expanding hot water. The pressure on the vessel will then rise rapidly and water will be ejected through the pressure relief valve. If that doesn't seem to

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What Causes a Water Heater to Lose Pressure Afte

2018-12-27 · Water leaving the hot water heater should flow at the same pressure as the cold water in your home. If it does not, a problem exists at the water-heater tank itself or in the lines that distribute

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