Hot water

We offer installation, service & repair.

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Anthony Ryan Plumbing provide installation, repairs, replacement and servicing of hot water storage…

Copper tanks / cylinders
Vented and un-vented hot water tanks
Booster and shower pumps
Electric water heaters
Electrical immersion elements
Stainless steel prsssusiseed tanks
Buffer and combi [tank in tank] for heatpumps
Secondary return circuits
Solar panel servicing and installation
Gas or oil combi boilers
Heatpump [all in one] split block units

FAQ's

Some of frequently asked questions and answers.

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What is an un-vented or pressurised hot water tank?

A pressurised water supplied from a storage cistern tank is pumped via ‘ booster pump’ or mains pressure into the cylinder, the advantages of these un-vented tanks, higher pressures obtainable at sinks and shower outlets also with very good flow charactoristics coupled with a balanced cold supply makes these systems particularly attractive for showers. Extremely low heat loss from these cylinder and fast recovery (reheat-up) time makes the un-vented tank a must in any solar thermal, heatpump or energy efficient upgrade.

The un-vented hot water tank is a now a standard installation on any new build or renovation project.

Safety features

Un-vented cylinders come supplied with many safety features, at no time the water temperature should reach 100°c as set down by regulations.

a thermostat with a max set point of 60°c
high limiting thermostat with a lock out of 90°c
electrical immersion element high limiting cut out switch.
(T+P) temperature and pressure release valve with a designed relief temperature of 95°

Also the cylinders are supplied with a sealed expansion vessel which must be service annually to ensure working order as these will loose the trapped air rendering the vessel ineffective, resulting in excess pressure generated throughout the system.

Do I need to have my un-vented tank serviced?

An annual service is required, we provide this service which includes

Standing and working pressure test
Drain and re-pressurise the pressure vessel
Inspect and operate the tempature and pressure relief valve
Inspect and check pressure reducing valve

Check and operate combi – inlet assembly safety valve.

Combi inlet assembly

T & P Valve

What is the white vessel connected to my hot water tank?

This vessel is the expansion vessel for the hot water tank system, this devise plays a key role in the safe operation of your un-vented hot water tank, it allow for expansion of hot water [DHW] waters, as the water heats in your tank, the heated volume of water expands up to 4%. Example a 300ltr tank when the water is heated to 60°c the water volume expands by approxmately 12litres.

Servicing and maintaining the expansion vessel is very important. Like the tyre on a car loses air and needs pumping up, the expansion vessel also loses the air cushion over time and requires pumping up. If there is no cushion for expansion of heated waters, the expansion will result in excess pressure in your un-vented tank system, causing water to leak from the safety valves.