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Queenston Quarry is located on the Niagara escarpment and was one of the three largest limestone quarries of Canada until stone operations ended in 1978. Its stone was used for years to build many important buildings around Canada.

Redevelopment Project:

Queenston Quarry will be redeveloped in coming years by Queenston Quarry Reclamation Co., into condominiums, a resort, a golf course, a winery, equestrian fields, and a beach, among other things.

Queenston Quarry current property boundary is around 248 acres and the entire project is approved for 985 units of density plus many other buildings.

ABS Group team is providing engineering services and supply IPS Fan Coils.

36 unit Townhome development project at QQ site. Townhomes will be typical two level (approx 2,000 sq ft) plus basement with IPS fan coil system, geothermal field and integrated gas fired domestic hot water system for space heating/cooling & domestic water for personal use.

ABS Group team is providing engineering services and supply IPS Fan Coils.

Our Services:

1) Design & Engineering based on Williams Integrated Piping System (IPS). Mechanical, Electrical, Plumbing, Fire Protection, Geothermal System Design, HRV based fresh air Systems.

2) Equipment Supply:
Williams IPS Fan Coils.

Impressive Savings!

With Williams IPS system and product the QQ Project will have UPFRONT Mechanical Capital Cost Savings of 25% of Mechanical Budget after comparing with Class “C” cost estimates.


Few Cost Saving Facts at QQ Project

  • • Dual purpose Mechanical system with Central heating and cooling plant.
  • • Replace Suites Air Conditioning (CGC Hybrid unit SKH Models) with IPS Fan coils
  • • Relatively Smaller Horizontal Geothermal Field Size.
  • • Deletion of Radiant Heating (Wall) System.
  • • Deletion of In Slab Heating
  • • Deletion of HVAC Boiler with accessories.
  • • Reduction in HVAC Ductwork
  • • Deletion of HVAC Distribution Piping c/w insulation
  • • Less Chemical Treatment & Cleaning required.

  • • Reduction in Testing, Balancing & Commissioning Scope of work
  • • Reduction in Control Scope of Work
  • • Use of PEX piping to be embedded in hollow core slab instead of copper piping connected to each plumbing fixture.
  • • Use of PEX risers up to and below 2”size instead of Copper.
  • • Reduce Labor and material.
  • • Fast Construction.

Manorhouse dockside

Why IPS - TWO IN ONE Mechanical System?

In this project, IPS was chosen because it offers more usable floor space as it require less equipment & piping resulting lower installation cost, fast construction & less system commission time due to less labor required.

Other benefits include higher system efficiencies, heat recovery & economizer free cooling (Reduce, Recycle & Reuse), considerably low carbon emissions, low maintenance costs & most importantly quiet operation.


IPS fan coils will be equipped with thermostat, EC motor fan, 1 circulators, 1 TRAC valve, filter, heating & cooling coils, valves, controller with purge timer per ANSI standard & Four (4) risers: 1 hot water supply, 1 hot water return, 1 cold water supply and 1 condensate drain riser.

IPS Piping Schematic

Some of the Green Features list below (but not limited too…)

  • Combination water and space heating / cooling with Central Geothermal & Condensing boilers throughout.

  • Williams - Integrated Piping System (IPS) with domestic water compatible Fan coils equipped with thermostat, variable speed EC motors & variable water flow control TRAC valve with purge cycle controls.

  • Fresh Air Heat Recovery with efficient EC motors

  • High efficiency lighting & controls

  • High efficiency low flow plumbing fixtures

  • Insulated Roof and Wall for Energy Conservation

  • Low-e glazing windows for Energy Conservation

System Comparisons

And the Winner is ...IPS!

For suggested building types, when considering installed costs, operating costs, system efficiency and return-on-investment comparisons with competitive systems, the advantage goes to IPS"!. At right are general comparison charts that show how IPS"! stacks up against the competition.

Installation Costs vs. Comfort

While 4-Pipe Hydronic Systems provide a superb level of comfort, installation costs are usually a bit higher than most due to the system’s piping requirements. Water Source Heat Pumps and 2-Pipe Hydronic systems are generally more affordable to install, yet sacrifice optimum comfort. Conversely, Packaged Terminal Air Conditioners are relatively inexpensive to install, however, are noisy and sacrifice comfort. Since IPS"! utilizes the heat transfer efficiency of hydronic space conditioning while capitalizing on the “central system” already in the building, the system is an ideal choice for maximizing installed cost-savings and comfort.

Operating Costs vs. Comfort

With the application of terminal unit systems, efficiency drops because terminal units cycle at purchased horsepower and at a higher dollar per ton for equipment. The “lower cost per ton” central plant advantage and heat recovery employed by IPS"! means operating costs are consistently more attractive, especially when compared to PTACs window unit.

System Efficiency vs. Comfort

The benefits of a hydronic system, along with fewer materials, lower heating and higher cooling water design temperatures and heat recovery, make IPS"! one of the most efficient and affordable options available today.

Return-on-Investment vs. Comfort

When considering the minimal piping and equipment requirement, energy efficiency and central plant advantage, IPS"! delivers an impressive return-on-investment.

For more specific system comparisons, see the document entitled “IPS System Comparisons” indicated on this page.

And the Winner is ...IPS!

Cost-Savings & Reliability

The core of IPS! and it’s energy efficiency is the central plant advantage!

Reduced capital costs, impressive energy efficiency and a 12-years record of success make IPS! the right system for qualified applications. With IPS!, $15/sq. ft. installed costs and operating costs of $0.75 to $1/sq. ft. are very attainable.

Luxurious Comfort with IPS at a cost of PTAC system.

By utilizing the hydronic system already present in the building, these capital and operating cost targets are achieved in a variety of areas:

Less pipe required

unlike conventional hydronic systems that require as many as five pipes running throughout the building, IPS"! requires the addition of only one cold water return pipe to satisfy HVAC requirements.

Elimination of heating-specific equipment

By utilizing the domestic water heating-related equipment and distribution system for space heating, the need for surplus, dedicated equipment is eliminated.

Associated equipment reduction

these costs – sometimes referred to as “interface costs” – are all costs associated with the installation of a second set of pipes. They include surplus building space, fittings, valves, chases, insulation, hangers, various treatments along with management and maintenance.

Reduced labor costs

labor costs associated with all the above is either greatly reduced or eliminated altogether.

Central plant advantage

When terminal systems are applied to any application, efficiency drops due to units cycling at purchased horsepower rather than the demand in your building. And all at a higher dollar-per-ton cost for equipment. The fan coil system can be up to 70% more efficient than unitary based systems.

Hydronic transfer means superior efficiency

Since moving BTUs in water is vastly more efficient than moving them in air, experts agree that hydronic heating and cooling is one of the most comfortable and energy-efficient methods for space conditioning.


Geothermal based Two-in-One Mechanical System at a Price of Heat Pump or 2 Pipe Fan Coil based HVAC System.

A Record of Success!

IPS Engineering

ABS offers a design-assist program to serve engineers. We work closely with engineers on the front end by analyzing project to ensure our recommended system and product will meet project expectations, and in many cases deliver better long-term value than thought possible.

Our early involvement with every project helps in saving client’s money & time, reduce risk and achieve designs with higher levels of performance and with greater success.

Teamwork is paramount in delivering and meeting our clients’ objectives, day in and day out, and therefore, we maintain a highly motivated, experienced and skilled team. With our experienced team, we will explore all of your options and uncover the important issues in the Preliminary Design Phase of your project which help you make wise decisions about:

  • • Which IPS system is best fit for the project
  • • Cooling and/or heating system options
  • • Sustainable & Green building technologies Integration with IPS
  • • System Life Cycle & Budgets

ABS Group's leading reputation in building industry is based on its leading experts who have focused on building industry for nearly 20 years. Our clients have access to all of our experience.


At ABS, we want to make your job easier by offering everything right at your fingertips for easy access, viewing and download. Whether you need specifications, submittals, schematics, CAD details, manuals, design guidelines or even industry resource links, you can access it all right here through our web site.

TAll Products Catalog Horizontal Unit Catalog Vertical Stack Unit Catalogue Thermostat

IPS Fan Coil Specification

Mid / Low Rise High Rise Commercial Office Risers Central Plant with Geothermal

General Vancouver Case Study-Uponor

General Vancouver Case Study-Uponor

General OBC/CSA


Lead Out Information Published by Others


Other Design Resources

Commercial PEX Plumbing Engineering Quick- Reference Guide

PEX - Plumbing Design Assistance Manual (PDAM)

Useful Charts & Tables

PEX - Plumbing Pressure Loss Tables

Fixture Unit calculations & Copper - Plumbing Pressure Loss Tables

Suggested Equipment & Material Resources

Heat Exchanger

Pressure Booster Systems – Variable Speed Pressure Booster Systems – Application and Design

Vertical In-Line MultiStage 6800 Intelligent Variable Speed Booster Systems

Water Pressure Reducing Valves

Water Pressure Reducing

Note:Local code requirements should be consulted and adhered to. ABS & Williams are not responsible for content or accuracy of the data provided and for final design approval.

Case Studies

  • • Williams IPS – Developing Dockside Green LEGACY
  • • Natural Resources Canada (NRCan) – Publication
  • • Natural Resources Canada (NRCan) – Office of Energy Efficiency (OEM) - Integrated Community Energy Solutions (ICES) – Publication
  • • CanmetEnergy – Dockside Green Case Study
  • • Dockside Green - Cutting Edge Technologies
  • • SAB Award & Design Team
  • • Dockside Green Master Plan
  • • LEED Platinum
  • • LEED Score Cards - Phase I - Synergy
  • • LEED Score Cards - Phase II - Balance
  • • 2011 Sustainability Report
  • • LEED World Record
  • • Residential Features
  • • Williams IPS – Developing Queenston Quarry LEGACY
  • • QQ - Master Plan
  • • QQ - Town Homes
  • • QQ - Manor House 1st Condo
  • • ABS Role
  • • IPS Mechanical System
  • • Project Green Features

Bonaventure Senior Living, Salem Facility

Bozeman Wingate Inn Hotel, Bozeman, Montana Proud Recipient of ENERGY STAR AWARD-2004

The Coventry, Retirement Community, Utah

Fancoil Integrated Combination Heat and Domestic Hot Water Systems

Fancoil Integrated Combination Heat, Ventilation and Domestic Hot Water System

Williams IPS The Lois Hole Library Century Village


Other Case Studies


Uponor PEX Saves Time and Money for Residential High Rise

Story Version – 2012 2013

Presentations & Publications

Who Can Benefit:

Builders, Developers, Building Owners, Property Managers,

Contractors, Architects and Engineers


Plumbing Consortium - USA

Press Release


CSA Certification Notice