Questions?
1000 characters left
Mr. Heat Mechanical Inc. Heating Cooling Electrical Hydronic Contractor Official Website Best of 2017 HomeStars Mr. Heat Mechanical Inc.

Union Gas - GIF/IESO Whole Pilot Termination Notice

IMPORTANT NOTICE Union Gas - GIF/IESO Whole Pilot Termination Notice Please be advised that Union Gas (UG) will be terminating enrollment in the following enhancements to the Home Reno Rebate program:

1. The IESO Whole Home Pilot (WHP): Last eligible D assessment enrollment date is September 30th 2018.

2. The Government of Ontario Green Investment Fund (GIF) program: Last eligible D assessment enrollment date is October 31st 2018. 

For more information Click Here

Protect your cottage from weather damage

With the increase of storms in Canada and major floods representing almost 40 per cent of all natural disasters recorded, we need to take the proper preventive measures to combat extreme weather at the cottage.

Recent evidence suggests that the severity and frequency of severe weather, such as storms, floods, droughts and landslides, as well as extreme heat and smog, will continue to rise. According to Environment Canada, data show that the average summer temperatures have climbed one degree since 1970 and precipitation has increased about five per cent.

Seasonal properties are especially vulnerable because they're isolated and occupied less frequently. A rural location can also often mean more expense to repair any damage.

With increasingly severe and changing weather patterns, it's crucial that cottage owners are well informed about their insurance needs. It's important for all cottage and homeowners to speak with their insurance providers to ensure they have adequate coverage.

Aviva Canada, one of Canada's leading lifestyle and leisure insurers shared these simple tips for cottage owners to consider.

  1. Backup power. A backup system will keep your cottage safe during a power failure.
  2. Roof repair. Cottage country is often windy, but with regular maintenance such as cleaning the eaves troughs and drains, you can prolong the lifespan of your roof.
  3. Rot-not strategy. Heavy rain and flooding can result in rotting decks and foundations. Ensure proper preservation from rot by spraying your deck with a zinc-based wood preservative.

Source : News Canada

Hunting for Airflow Restrictions with Static Pressure

ACCESSORIES FOR THE HUNT

To hunt down airflow restrictions, you’ll need the following test instruments and accessories to get started:

• A digital camera;

• An analog or digital manometer;

• One length of tubing (3/16-inch inside diameter [ID] neoprene works well);

• One Dwyer Model A-303 Static Pressure Tip;

• A 3/8-inch bullet-tip drill bit with a sheath to prevent drilling in too far;

• A 3/8-inch plastic test port plugs; and a

• Carrying Case.

If you’re going to hunt, you have to have the right stuff. Otherwise, you’re only posing as a real airflow hunter.

SCOUTING FOR AIRFLOW RESTRICTIONS

Good hunters scout their locations before starting any hunt. They look for visual clues that identify deer have been traveling in the area, signs of deer tracks, scrapes on trees, and frequently used trails. These are all visual indications that deer are present.

Airflow restrictions can have visual clues indicating they are present, too.

Your first step should be a visual inspection. What type of visual clues are you looking for? Check for the following when you suspect an airflow problem:

• Pinch points in flexible duct systems;

• Restrictive duct fittings;

• Improper flexible duct suspension;

• Branch ducts that are too long;

• Too many elbows;

• Dirty air filters; and

• Dirty blower wheels.

Your solution to an airflow restriction might be as simple as correcting one of the defects mentioned above. If you uncover one of these issues, take a digital photo and share your find. Customers like to see what was causing their pain. If the problem is a bit more complicated, and it often is, the hunt is going to get a lot more interesting and fun.

TIME TO HUNT

Some airflow restrictions will be harder to find and won’t provide any visual clues. You’ll need to go one step further to track them down. In this case, you have to identify the location of the airflow problem. Is it isolated to a particular room or area, or is the problem spread across the entire system?

If the problem affects the entire system, begin by measuring total external static pressure (TESP). Excessive TESP is a sign that a hidden airflow problem exists. It won’t identify the restriction as additional pressure tests will be needed to track it down. If the issue is isolated to a particular room or area, you can jump straight to measuring duct pressures to track down the problem.

START AT THE AIR-HANDLING EQUIPMENT

To pinpoint an overall airflow restriction, first measure TESP and then add air filter pressure drop and indoor coil pressure drop to this reading. This provides an overall picture of what’s happening with the system. To do this, you’ll need to install 3/8-inch test ports (drill holes) where air enters and leaves the equipment.

You’ll need to drill into areas that could cause refrigerant or water leaks so be careful. Use a drill bit sheath, so the drill bit only penetrates the metal 1/8th of an inch or so and doesn’t get pulled into the equipment.

Once test ports are installed, measure pressure entering and leaving the equipment and add these pressures together to determine TESP. The side of the system with the highest pressure reading is often where the airflow restriction is located. If measured TESP exceeds the air-handling equipment’s maximum rated TESP, an airflow problem likely exists.

AIR FILTER PRESSURE DROP

If the air filter is located at the air-handling equipment, start by measuring its pressure drop. Many times a clean filter made of a restrictive media type or one that is undersized in surface area will choke down airflow across the entire system.

Measure filter pressure drop by measuring pressure before and after the filter. Once these readings are obtained, subtract them from one another to determine filter pressure drop.

A properly sized air filter should typically have a filter pressure drop no more than 20 percent of the air-handling equipment’s maximum rated TESP. This rating is usually found on the equipment nameplate of the air-handling equipment. For a system rated at a maximum total external static pressure of 0.50 inch of water column, the pressure drop across the filter should not exceed 0.10 inch water column (20 percent x 0.50 - 0.10).

If the system you’re testing has a return air filter grille away from the equipment, you still measure filter pressure drop, just in a different location. Measure pressure drop across the filter by piercing the static pressure tip through the return air grille and filter.

Pressure drop will be read directly on the display of the manometer. If filter pressure drop is acceptable, continue hunting, you haven’t located the restriction yet. It’s time to move to the indoor coil.

INDOOR COIL PRESSURE DROP

Measuring indoor coil pressure drop is usually a roadblock for many hunters as they worry about piercing the coil and causing a refrigerant leak. If you carefully inspect behind coil access panels before drilling and use a drill bit stop or sheath, your chances of piercing a coil are greatly reduced.

To measure coil pressure drop, measure pressures before and after the coil. Once these readings are obtained, subtract them from one another to determine the pressure drop across the coil. Also, a wet coil will often have a significantly higher pressure drop than a dry coil.

A properly sized, clean coil should typically have a pressure drop no higher than 0.20 to 0.30 inch of water column. If the pressure drop exceeds this, it could be an indicator the coil is too restrictive for the proper amount of airflow.

ADD DUCT SYSTEM PRESSURES

When filter and coil pressure drop are acceptable, or your airflow problem is isolated to a particular room or area, look at supply and return duct pressures to continue hunting the airflow restriction. The pressure on either side of the duct system should not be higher than 0.10-inch water column.

First, measure the return duct pressure. If you measured filter pressure drop at the equipment, this will be the same pressure reading as the pressure entering the filter. Next, measure the supply duct pressure. If you measured indoor coil pressure drop, this will be the pressure reading taken in the supply plenum.

The side of the duct system with the highest pressure is the one that is the most restrictive and should be tested first. From the test location, start working down the duct system by installing test ports every 4 feet or so downstream. Be sure to measure the pressure drop across suspect duct fittings like sharp transitions and turns.

Once you identify a drastic pressure change, note what is inside the duct that could be causing it. Common causes include loose duct liner, closed fire dampers, and collapsed ducts.

Simply, when you find the resistance, you find the restriction — fix the resistance and you fix the airflow restriction.

Warning — just because you correct a duct pressure issue, it doesn’t mean the overall airflow issue has been fixed. You could still have issues with high static pressure or undersized ducts. It’s a good idea to measure total external static pressure just to ensure a hidden airflow problem doesn’t exist.

Hopefully, the next time you discover an airflow restriction, you’re better equipped to hunt it down. In some hunts, you’ll have to bring out specialized equipment, such as air-balancing hoods or anemometers, to continue tracking bigger game and larger trophies.  

 

Source : achrnews .com

Change to Enbridge B Warning Tags Expiry Date

As part of their ongoing commitment to safety and customer satisfaction, Enbridge Gas Distribution has changed the number of days given to make repairs or corrections to a B tag from 35 days to 42 days. They are making this change to harmonize processes with other natural gas utilities in Ontario and provide a consistent experience for contractors, appliance installers, certificate holders and builders.
Enbridge will begin to use the new 42 day warning tag and process on Monday, August 13th, 2018.
As communicated previously, faxes are no longer accepted. Technicians can simply take a picture with their phone or tablet and email it directly to Enbridge. This is more reliable, trackable and avoids delays in processing.

Political turmoil pushes HVAC equipment costs up

Tariffs introduced by the United States on Canadian steel and aluminum that sparked counter tariffs by the Canadian government can only add up to one thing for Canadian wholesalers and contractors – higher costs on just about everything. In fact, some products are being hit with tariffs going both ways – those that are made in the U.S. from Canadian steel and then shipped to Canada. Some water heaters fall into this category.

Far from helping the U.S., these tariffs are pushing up prices on that side of the border too. Matt Michel, CEO of Service Roundtable, a U.S. contractor consulting group, notes that almost all prices will rise because virtually every industry that uses steel and aluminum will be affected.

"The (Donald) Trump administration is ignoring history as they downplay the impact of the tariffs across the broader economy," he remarked in an article in the May 28 issue of the U.S.-based Air Conditioning, Heating and Refrigeration News (www.achrnews.com).

Canadian manufacturers, if they are using Canadian steel and aluminum, may be somewhat protected on this side of the border. However, they also export to the U.S., so the tariffs probably won't help. The U.S. and Canadian economies are so interwoven that anything that affects Canada affects the U.S. and vice versa. The George W. Bush administration introduced steel tariffs in 2002 and dropped them 18 months later due to thousands of jobs lost in U.S. manufacturing. However, the current U.S. administration tends to ignore things like history, logic, established practices and protocols, facts, etc. Donald Trump and his colleagues believe fundamentally that trade agreements are detrimental to the U.S. – despite all the evidence that shows otherwise. That makes it almost impossible to predict where this will end up.

We are looking into just how much these price increases might be on different types of plumbing and HVAC equipment and supplies. Contractors need to be able to explain this to their customers. And, in some cases, it might make sense to stockpile certain pieces of equipment where a significant price increase is coming, if it hasn’t already.

The president's behaviour, including the bizarre attack on our prime minister that was so deeply offensive to every Canadian regardless of political persuasion, causes considerable doubt that these issues can be resolved through negotiation. Business large and small on both sides of the border faces a rough ride until, at the very least, the next U.S. presidential election on Nov. 3, 2020. It's not going be easy.

 

Source : Plumbingandhvac. ca

All rights reserved. Web design By Mysteryman & Co Ltd. Content By Boston Media Ltd.
All registered trademarks are the property of their respected owners.