Closed Loop; LTHW, CHW and MTHW Systems

Closed loop systems are critical to the heating and cooling of your building. Poor water chemistry can lead to problems or failure of; central plant (boilers/chillers), valves, pumps and pipework.

DSW offer the following services in accordance with BSRIA BG 50 to ensure your systems continue to operate fault-free and efficiently.

• Sampling and detailed reporting of; chemistry, Pseudomonas species, TVC 2/3, SRB and NRB
• Chemical dosing of; Molybdate/nitrite inhibitors, biocides and Glycol
• Balance flushing for moderately fouled systems
• Biocide flush for CHW systems with significant Pseudomonas systems
• Full system dynamic flushing including; radiators, fan coil units and exchangers
• Supply and install of filtration for removal of suspended solids and soluble metals
• Supply and install of dosing pots
• Supply and install of pressurisation units

Corrosion Coupons

Corrosion coupons can be installed on a variety of water systems including closed loop, LCHW, CHW, condensed water as well as medium temperature hot water systems and cooling water systems.

The purpose of corrosion coupons is to measure the rate of degradation for certain metals within the system, such as mould steel, iron, and copper. By being measured on a regular basis, the weight differential is calculated to obtain the rate of degradation within that system.

This makes corrosion coupons a valuable tool for new systems, allowing you to ensure that the water balance is correct. They are also useful for systems with known issues of degradation, as they can help you understand the lifecycle of your system and plan for necessary maintenance and repairs.