DOAS - Energy Recovery
When is an Energy Recovery system required according to ASHRAE 90.1 (2013)?
ASHRAE 90.1 2013
(Energy Standards for Buildings, Except Low Rise Residential Buildings)
When using a VRF Dedicated Outside Air System (DOAS) to bring in ventilation air to...
VRF Advantages
Heat Recovery units can utilize heat removed from zones providing cooling to heating zones requiring heat.
VRF systems take up less room than other system types, freeing up valuable mechanical room space for other purposes.
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Manufactures VRF Piping Layout Drawings
The VRF Piping Layout is highly engineered by the VRF manufactures software to design the pipe sizes to meet the capacities and conditions required, including ASHRAE 15. The pipe sizes are affected by capacity, pipe lengths and...
VRF Ventilation
The building requirement for ventilation air and the methods of delivering this air vary by geographic location. We’ll discuss several methods commonly found in various region of the United States. Indoor air quality (IAQ) is important for occupant...
Refrigerant Monitoring Code Requirements
ASHRAE 15 requires the monitoring of refrigerant leaks under certain conditions within a mechanical room, but what about an occupied space where refrigerant is circulated through VRF/VRV (Variable Refrigerant Flow) Indoor Fan Coils? When is a...
Active vs Passive Refrigerant Recovery
The active removal of refrigerant from a system using Refrigerant Recovery Machines makes the process much easier than using passive methods. The removal of refrigerant from a system that is being repaired or replaced is...
Daikin now has available a Dual Fuel, 3-phase variable refrigerant flow system. Daikin made it adaptable to the North American market with its ability to integrate with the ubiquitous gas furnace. For heating Daikin gives you the...
Refrigerant Recovery Speed
Using the 80/20 rule, where we assume that 80% of the refrigerant recovered will be in vapor form and 20% will be recovered in liquid, we have created the following chart....
What are the difficulties of Installing a VRF system in a Senior Living Facility?
The difficulty with this VRF project is that the existing senior living facility is occupied. There are two buildings in this senior facility, one classified for...
ZoomLockâ„¢ Tool Review
For those of you that are new to press-fit tools we will cover the features of the Klauke 19 kn tool used on ZoomLockâ„¢ fittings, this includes the tool, jaw sets, fittings and accessories required to make...
