Showing posts with label "change-over". Show all posts
Showing posts with label "change-over". Show all posts

Monday, 31 March 2014

Changeover Time is Coming

After one of the coldest winters in recent memory, the heating to cooling changeover is right around the corner. Here are some tips for making the changeover this year.
 
1)      During the shoulder season when heating may be required, Make Up Air units that are fed by Primary Boilers can be left in a heating mode while the fan-coils in the suites are switched over to cooling. With a cooler Spring appearing likely, this will allow you to provide some heat in the corridors while providing cooling insuite.
 
2)      Glycol – make sure that when draining coils of glycol to recover all of the glycol in clean storage containers. Do not let the glycol flow into the building mains.
 
3)      Basement Loops (Miscellaneous Heating Loops) that are fed from the Heating / Cooling Mains need to be manually shut down during the summer to prevent condensation in enclosed spaces.
 
4)      Do an inspection of the Cooling Tower well before your changeover date. With the ice storm, it is possible that parts of the Tower may have experienced some damage due to heavy ice.
 
5)      Make sure that outside, electrically heated areas are shut down for the summer or that the controlling thermostats are set to a minimum set-point a couple of degrees above freezing.
 
6)      Remember to call Provident Energy during your changeover. Unless the Energy Management System is commanded to the cooling mode, HVAC systems will not operate properly.

Thursday, 29 September 2011

Change-Over Time!

It's September and the leaves are already beginning to change colour. That means it's change-over time! Here are a couple of quick tips for condos...


- Condominium Boards determine the changeover date for their facilities. This matter should be brought up at Board meetings in September.

- Change over times are the busiest times of the year for Contractors. Call ahead by at least two weeks to schedule your changeover.

- In some facilities, it may be possible to change over the corridor make up air units prior to converting the in suite fan coils to heating. This gives you the option of heating the Building should a cold spell occur prior to the change-over.

- You can speed up changeovers by shutting down Chillers prior to the arrival of your Contractor. Most Boilers should not be started if the water in the pipes is still very cold.

- Facilities with Energy Management Systems have further options including “Cooking-Time” Only Schedules, Duty Cycling, Outdoor Air Temperature Fan On/Off, and other advanced options.

- Reduce complaints and service calls by posting any changes that must be made to Thermostats on Bulletin Boards. Make it clear that there will be NO Suite Air Conditioning after your changeover date.