MacLeod & Grant Ltd.

Strait of Belle Isle Health Centre

MacLeod & Grant Ltd. — Fri, 12 Oct 2012 19:40:45 +0000

MacLeod & Grant Ltd supplied and commissioned an SA Armstrong Design Envelope 6800 23040 dual 3hp variable speed package for the new Strait of Belle Isle Health Care Centre. The package is used to supply adequate water pressure to the new facility, the pressure from the street hovers around 20psi, the variable speed package is holding a steady 60psi supply to the building with capacity grow beyond the current operating duty.

The new facility is located in Flowers Cove, Newfoundland will replace the existing health centre and provide 24-hours ambulance services, physician clinics, dental clinics, visiting specialist clinics, laboratory and diagnostic services, and community health services for mental and public health, and home care.

Installing Contractor: Blackwood Contractors Ltd

Modine Atherion Packaged Rooftop Ventilation

MacLeod & Grant Ltd. — Mon, 01 Oct 2012 19:08:46 +0000

In mythology, the name refers to the clean air only the gods could breathe. In reality, it’s the way Modine brings fresh air from outside into your workplace.

RAISE YOUR COMFORT LEVEL……TO THE ROOF

The Atherion is the ideal solution to bring fresh, tempered outside air into your facility. The Atherion can be customized to meet your outside ventilation air requirements, regardless of your geographic location. And by including our advanced ERV option, your system becomes a high efficiency, 100% dedicated outside air unit, potentially saving thousands in annual energy costs.

The Atherion provides many features including:

Optional high efficiency heating with Modine’s Conservicore Technology
Cooling capacities of 15, 20, 26, 30 tons
Meets ASHRAE 90.1 and 62.1 standards for efficiency, green building and indoor air quality
Higher IAQ with up to 100% outside air ventilation
The latest in cooling technology with factory-installed microprocessor controls
Modine’s own PF Microchannel Condenser Coils
Fully modulating tandem digital scroll compressor for maximum efficiency at turndown conditions
Robust 2″ double-wall construction for lasting quality
Full length hinged access doors for easy access
MERV16 filters for greater filtration and less energy use
Modulating hot gas reheat to provide energy savings
Optional Energy Recovery Ventilator with a 4A Zeolite coated aluminum wheel
Made in the USA

Watch the video below and visit modinehvac.com to learn more

Fulton Vantage Condensing Boilers

MacLeod & Grant Ltd. — Fri, 08 Jun 2012 19:35:57 +0000

The Fulton VANTAGE is now available up to 6 Million BTU/hr!

The Vantage Hydronic Condensing Boiler product line includes an extensive offering of models ranging in size from 2,000,000 BTU/HR input to 6,000,000 BTU/HR input. The fire tube design features diverse power burner configurations for high efficiency hydronic heating applications.

Vantage boilers feature HIGH PRODUCT MASS and HIGH PRESSURE VESSEL WATER VOLUME; making the boilers exceptionally tolerant of varying and sometimes unpredictable system conditions.

The Vantage boiler is the first condensing boiler to offer operation on #2 oil as a backup fuel, taking advantage of existing fuels in retrofit applications. When #2 oil is selected, the Vantage control system automatically loads the correct fuel profile, simplifying backup fuel switchover requirements. The same simplicity exists for natural gas / propane dual fuel applications. Duplex alloy stainless steel is used in the condensing heat exchanger. Duplex alloys have industry leading, superior properties suited for condensing applications.

Fulton Vantage Features:

High Mass and Water Volume

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Ultra High Efficiencies
Linkageless Modulation
Rugged, Robust, Reliable
Duplex Alloy Heat Exchanger
Dual Fuel with #2 Oil
Low Emissions: <9ppm NOx

Learn more about the Fulton Vantage boiler at www.fulton.com of from the documentation below:

Fulton Vantage product brochure
Fulton Vantage product manual

1801 Hollis Booster Replacement

MacLeod & Grant Ltd. — Wed, 06 Jun 2012 19:50:02 +0000

An aging Armstrong 6220 series domestic cold water booster required replacement at 1801 Hollis St in Halifax NS. The existing constant speed booster package was no longer available, so working with Black & McDonald, MacLeod & Grant Ltd supplied a modern SA Armstrong Ltd 6800 Series Design Envelope Booster.

The original booster design was for a maximum flow of 11.36 L/s (180 USGPM) a boost pressure of 644 kPa (93.4 PSI), this was originally achieved using a duplex package of constant speed Armstrong 4380 1.5D pumps with 11.2 kW (15hp) 3600 rpm motors pumping through PRV’s to the system. Each of the original pumps had a bhp of roughly 7.46 kW (10 hp), so in any call for water pressure in the tower either 7.46 kW (10 hp) or 15 kW (30 hp) was required to satisfy the system.

The replacement 6800-IVS Design Envelope booster was supplied with a pair of duty-standby 4700 series vertical multi-stage pumps, the vertical multistage design allows for an immediate reduction to a 7.46 kW (10 hp) motor on each pump. The package was installed over the Labour Day long weekend and commissioned the following Tuesday morning under a fully operating office tower, one pump easily handled the entire tower and pressure to the roof top cooling towers. After monitoring the package operation for over and hour, the average operating speed of the lead pump was roughly 70%, operating between 2.8 and 3.0 kW (3.8 and 4.0 bhp). These numbers are only an initial sample of the energy savings using a Design Envelope booster, but work out to around 60% motor power savings under normal operating conditions.

Installing Contractor: Black & McDonald

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Lochinvar Crest

MacLeod & Grant Ltd. — Tue, 27 Mar 2012 18:34:43 +0000

Lochinvar has taken the fire-tube concept in an innovative new direction with the CREST modulating-condensing boiler. With sizes that range from 1.5 to 3.5 million Btu/hr, you finally have the opportunity to utilize Lochinvar leading-edge technology in your largest applications. With thermal efficiencies up to 99% in low water temperature applications, CREST is positioned to provide exceptional energy-saving performance.

The advanced CREST introduces a combustion system with a unique burner design with up to 25:1 turndown. The burner fires into an array of 316L stainless steel fire-tubes that transfer the heat to the surrounding water with exceptionally high efficiency.

CREST communicates seamlessly and in real time with building management systems by utilizing an on-board MODBUS protocol. The SMART TOUCH™ control has a built-in cascading component that communicates with up to eight units, providing total command without an external control or complex and expensive control logic programming by the BMS integrator.

For more information on the Lochinvar Crest check out lochinvar.com or contact our offices.

Webster Temp A Trim

MacLeod & Grant Ltd. — Mon, 29 Aug 2011 19:02:26 +0000

The air temperature in your boiler room can change dramatically from day to night, and from season to season. These changes cause significant combustion inefficiencies and degrade combustion stability. TEMP A TRIM® senses combustion air temperature and automatically varies the fan speed to create a constant air flow mass for combustion. By maintaining optimum fuel/air ratios, you are assured that your burner is operating at maximum efficiency. For a detailed introduction to the Temp A Trim technology, check out the video below.

http://www.youtube.com/watch?v=duXan64m6M0&feature=gv

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To learn more about Webster Temp A Trim technology, check out webster-engineering.com or contact our offices.

Armstrong Design Envelope

MacLeod & Grant Ltd. — Fri, 08 Apr 2011 19:39:16 +0000

SA Armstrong Ltd has simplified the selection process for HVAC equipment. Typically we select equipment like pumps, boilers and chillers for a single design day, but in reality HVAC is a part load industry and that design day could be oversized by as much as 20%. A typical HVAC system may only require 40-60% of its total capacity about 95% of the time.

The answer to these part load conditions is the Armstrong Design Envelope concept. Using a combination of intelligent variable speed and demand based controls; you can minimize risk, reduce capital, design and install costs along with increasing your energy savings.

The design envelope concept is currently available on 4300-IVS series pumps, IPP packaged chilled water plants, 6800-IVS series boosters and the ECO*PAK modular boiler system. For a better understanding of the design envelope concept check out this video, visit armstrongpumps.com or contact our offices.

Takagi Water Heaters

MacLeod & Grant Ltd. — Mon, 14 Feb 2011 18:50:53 +0000

As part of the growing A.O. Smith water heater family, MacLeod & Grant Ltd is now the representative for Takagi commercial instantaneous water heaters in Atlantic Canada. Takagi is a Japanese brand that has been in the tankless water heater business since 1952 and is the first tankless water heater company specializing in tankless-only products to enter the North American market.

Takagi pride themselves on protecting the environment by producing highest quality, most eco-friendly and innovative tankless products possible in hopes to help relieve global warming.

For further information on Takagi instantaneous water heaters, be sure to contact our office or check have a look at takagi.com.

Takagi T-M50 "The Monster"

MacLeod & Grant Ltd. — Mon, 14 Feb 2011 18:49:25 +0000

The NEW T-M50 model, also know as “The Monster” was specifically designed for heavy-duty commercial applications. The T-M50 offers “true commercial grade” components and can be Easy-Linked and Multi-Linked to meet high demands. The T-M50 also offers a dual-combustion system for added redundancy. Try the new T-M50 or T-M50 ASME model and see why Takagi offers the most durable and best quality commercial tankless heaters on the market!

380,000 BTU/U, up to 14.5 GPM (Max)
The versatility of being installed either indoor, outdoor, or with a direct vent, all with the same unit.
Easy-link capability up to 4 units. You may connect up to 10 units and generate over 140 GPM using a multi-controller unit.
Features a Dual-Heat Exchanger system that allows for redundancy. In the event of an emergency, if one system goes down, the other system will still stay running.
Uses HRS copper, the most durable copper in the industry. HRS copper is stronger and harder than the standard copper, making it much more resilient against erosion and leaks.
And more!

For more details on “The Monster” contact our offices or visit takagi.com.

Doric Properties Management

MacLeod & Grant Ltd. — Mon, 31 Jan 2011 21:10:09 +0000

In an effort to combat rising energy costs, Doric Property Management chose Lochinvar Knight commercial condensing boilers for conversion from oil fired boilers to natural gas fired appliances in four of their properties in the Clayton Park region of Halifax NS. 21 Chadwick Place, 61 Chadwick Place and 290 Willett Street were each upgraded with three new Lochinvar Knight KBN401 boilers and Armstrong E-Series circulators, 16 Caxton Close used two Lochinvar KBN501 and one Lochinvar KBN500 boiler with Armstrong E-Series circulators.

The newest version of the Lochinvar SMART System control allowed the installations to control zoned domestic hot water tanks on all sites except 21 Chadwick Place, the new ‘efficiency’ mode cascading sequence, as well as being backwards compatible with the last generation of control on the KBN500 used at 16 Caxton Place, without any loss in functions. The new control also allows for up to three separate space heating demands, upgraded BMS functions, seven days of night set-back for space and DHW heating, on screen ramp delay adjustments and additional pumps controls.

All four installations are existing high temperature space heating applications and are already reducing the operational costs of these systems.

Installing Contractor: Atlantica Mechanical Contractors