Do air handlers need to be cleaned?
Clean or change your air filter at least once a year to ensure proper air flow and better indoor air quality. Locate your air handler filter.
What is air handling unit PDF?
Air handling unit (AHU) is one of the most important equipments in HVAC (heating, ventilation, and air-conditioning) system particularly in large-scale buildings for providing both heating and cooling for multiple zones. Various operating modes and ventilation systems of AHU are also discussing.
What is the function of air handling unit?
An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. The basic function of the AHU is to take in outside air, re-condition it and supply it as fresh air to a building.
How do you size an air handling unit?
6 Steps to Properly Size Your HVAC Unit
- Step 1: Calculate the square footage of the area to be cooled.
- Step 2: Next, multiply the square footage obtained for each area by 25.
- Step 3: Then, add 400 for each person who works in that particular area.
- Step 4: Finally, for each window, add 1,000.
How do you flush an air handler?
To do it, simply shut the air conditioner off and turn the power off at the source. Then, the outer panel can be safely removed to expose the coils, fins and fan as well as the drain line; the drain line is usually at the bottom of the air handler and it may drain either into a pan or into a previously installed drain.
What are the types of air handling unit?
There are basically two types of air handling unit that are in used and they are the “Draw-Through” or “Blow-Through”. In the Draw-Through type, the fan pulls the air through the mixing box, filters and cooling coil before discharging it from the fan outlet to the space to be conditioned or to the ducting network.
How often should you clean your outside AC unit?
Ideally, air conditioning maintenance should be performed twice a year, though once is sufficient for some systems. Between visits, the condenser coils can be cleaned by removing large debris and rinsing the coils with a hose, after shutting the power off.
What is the SOP for air handling unit?
Standard operating procedure for preventive maintenance of the air handling unit and ventilation units of pharmaceutical manufacturing facility. The purpose of this SOP is to provide stepwise instructions for Preventive Maintenance of AHU & Ventilation units. This procedure is applicable for Preventive Maintenance of AHU & Ventilation units.
How to perform under preventive maintenance on an ahu?
5.2.1 Switch ‘OFF’ the main supply and display the ‘UNDER PREVENTIVE MAINTENANCE’ board prominently on the front side of AHU. 5.2.2 Check all the nut & bolts of supply air filter plenum are properly fixed and tight. Check that no gap between supply air filter frame and filter plenum, tighten up the bolts/replace the gasket if required.
What do you need to know about air handling machines?
Only qualified technicians may work on the machine. They must have all the necessary Personal Protective Equipment (PPE): glasses, gloves, safety shoes, hearing protection, dust mask, etc. Check the following points before carrying out any work on the air handling unit. – Cut the main fan power supply.
How to prevent air leakage in an ahu?
Check that no gap between supply air filter frame and filter plenum, tighten up the bolts/replace the gasket if required. 5.2.3 Check manually all the duct joint of the supply and exhaust duct for air leakages & arrest them by tightening up the nut & bolts/or replace the gasket if required.