Mechanical System [MVAC] Archives - Constructandcommission.com

AIR HANDLING UNITS | All we need to know…

An air handling unit consists of multiple components, with its main function being the primary piece of equipment within a ventilation system, to take recirculated … Read More

CRAC UNIT | Functional Testing Example + Template

Upon completion of any new CRAC [computer room air conditioning] Unit installation or modifications to an existing unit, there will be a requirement to complete … Read More

CRAH UNIT | Functional Testing Example + Template

Upon completion of any new CRAH [computer room air handling] Unit installation or modifications to an existing unit, there will be a requirement to complete … Read More

CRAC Unit vs CRAH Unit | What’s the difference?

The difference between a CRAC Unit System and a CRAH Unit System is how the heat is transferred and then removed/ejected from the system. A … Read More

CRAH UNITS | What are they?

Here we provide a high-level overview of what a CRAH Unit is and how they are installed and operated…

[075] B-Flushing and Cleaning Pipework Chemical Treatment Stage

CHEMICAL CLEANING FLUSHING | Procedure & Sequence

Once the Dynamic Pipework Cleaning and Flushing has been completed, the next step will be to treat the system with Chemicals…

[068] Front cover for Dynamic Flushing Procedure

DYNAMIC FLUSHING | Procedure & Sequence

Dynamic Flushing is completed before the Chemical Cleaning occurs within a closed pipe system flushing and cleaning process and procedure…

[067] B-Flushing and Cleaning Pipework Overview

FLUSHING & CLEANING | Pipework Systems Overview

Here we provide an overview of the flushing and cleaning process before moving to explain in more detail…

Cooling Tower Makeup, Blowdown and Cycles of Concentration System

MAKEUP / BLOW DOWN | Cycles of Concentration

Make up water and Blow Down Systems explained, including overview for Cycles of Concentration.

COOLING TOWER | Piping Layout and Diagrams

Various piping layouts and diagrams are detailed for the Cooling Towers, including equalizer pipework, make up water, drainage, blowdown, bypass, filtration…

COOLING TOWER | Preventative Maintenance Inspections

This Cooling Tower Preventative Maintenance Checklist covers the Daily, Monthly, Quarterly, Semi-Annually and Yearly checks and activities + can be DOWNLOADED in PDF…

Inspecting and Cleaning of Cooling Tower

COOLING TOWER | Inspecting & Cleaning Overview

COOLING TOWERS need to be inspected, cleaned and documented in line with local government requirements to ensure they are not at risk of developing Legionella…

COOLING TOWER | What is a Sweeper System?

A cooling tower sweeper system is a simple system consisting of a filter, a pump, a range of plastic pipework, and various nozzles that are installed around the perimeter of the basin…

COOLING TOWER PLUME | What causes it?

cooling process being ejected from the top of the tower, mixing with cooler ambient air creating a plume of condensation that looks like white smoke.

COOLING TOWERS | All the 38 components explained

Cooling towers can consist of up to 38 components, here we have detailed and explained them all…

COOLING TOWER | Pre-Commissioning Checklist and download

COOLING TOWER [PDF] Pre-Commissioning Checklist covering; Delivery, Storage, Installation & Pre-Commissioning/Pre-Functional Checks

COOLING TOWER | Types of Towers and Ponds

The types of Cooling Towers and Ponds come in many forms, sizes, and prices, but all have the same purpose, to act as a heat … Read More

FAN COIL UNITS | What, Where & How

What is a fan coil unit, what does it do & how does it work? Fan Coils are used to cool or heat the air recirculating within a space…

Fan Coil Unit [FCU] vs Air Handling Unit [AHU]

So what is the difference between a fan coil unit and an air handling unit?

FIRE DAMPERS | Detailed Guide to Testing

A detailed step-by-step guide on how to test and inspect a Fire Damper including a template.