St. Brieux Chateau Providence

Lighting
The following table provides descriptions of the existing and proposed lighting conditions for different areas of the facility.

Controls Upgrade

Install New Building Automation System (BAS)
Overview
The two Rendamax atmospheric boilers at the St. Brieux facility are controlled by Johnson Controls Indoor/Outdoor controllers while the air handling systems are equipped with standalone electric controls along with individual thermostats located in the various spaces. None of the control systems are interconnected nor is there any link to the central operations hub at Tisdale. Significant improvements to the operation of the facility could be implemented with a new Building Automation System (BAS) that would coordinate and control the operation of the building H.V.A.C systems and also allow operators remote access from the control hub in Tisdale thus ensuring that setpoints and schedules are being maintained.

Scope
The needs of the new BAS system will be assessed and an appropriate series of controllers and points will be installed to govern the operation of AHU 1 and the boilers along with the necessary exhaust fan interlocks. The system will be controlled by an operator interface which is networked to the control hub in Tisdale.
 

AHU 1 – Zone Isolation
Overview
Chateau Providence in St. Brieux has a main Air Handling Unit designated AHU 1 which supplies the majority of the facility excluding the Kitchen and Laundry areas. AHU 1 is a multi-zone, mixed air system that currently operates on a 24/7 basis. While supply air must be maintained to areas with 24/7 occupancy, such as the wards and nursing station, there are other areas such as the Dining Area and Lounge that are supplied with a significant amount of supply air yet are un-occupied during the night. By installing zone isolation dampers, significant savings can be realized by restricting the supply air to areas that do require ventilation for significant periods of time.

Scope
A total of six zone isolation dampers will be installed in the supply and exhaust ducts along with necessary points and controllers. Variable Speed Drives (VSDs) will also be installed on the AHU 1 supply fan as well as general exhaust fan EF-3 in order to maintain air balance in the facility. Both the dampers and the VSDs will be connected to the new BAS. All dampers will then be programmed to open at 7:00am and close at 7:00pm with a push-button override also being installed so that supply air can be provided outside the scheduled operating hours if necessary.
 

Perimeter Radiator Reflectors
Overview
Wall areas, behind the perimeter steam radiators, are significantly hotter than other wall areas within the building. These hot areas transmit significant amounts of heat to the outside thus reducing the effectiveness of perimeter radiation.

Scope
Reflectors designed specifically for application on walls behind heating radiators will be installed to reflect energy back into the building space. In addition, the insulating pockets of air behind the heat reflectors further reduce heat losses normally due to convective and conductive processes. These reflectors will greatly improve the effectiveness of the existing radiators, potentially allowing the heating loop temperature to be reduced and thus increasing the overall heating system efficiency and occupant comfort.

Vending Machine Control
Overview
Cold beverages are available for purchase at this site from a single refrigerated beverage dispensing machine. It has self contained refrigeration and illumination that are currently running constantly, regardless of whether people are in the area to purchase beverages.

Scope
A Vending Miser control will be implemented on refrigerated vending machines within the facility. It will be wall mounted and plugged into the receptacle providing power to the existing vending machine, and the vending machine will then be plugged into the Vending Miser receptacle. It can be relocated with the vending machine.
A passive infra-red sensor detects occupants and allows the machine to power down when the surrounding area is vacant. The device also monitors room temperature and vending machine compressor operation to automatically re-power the cooling system at one to three hour intervals to ensure that drinks remain cool.
Savings result because the machine lighting is only on when the area is occupied, and the compressor does not short cycle, which increases the efficiency and life span of the compressor.

Parking Plug Control
Overview
Approximately 9 existing duplex parking plug receptacles are not presently controlled and are occupied approximately 50% during winter months. By implementing controls on these the power delivered to the plugs will be cycled based on outside temperature achieving both electricity consumption and demand savings while maintaining necessary power to the plugs so that users are able to start their vehicles. Time and temperature control will be installed. Plugs will be energized on at temperatures below -30C, alternate in at least 2-banks at 20 minute intervals at temperatures between -15C and -30C, and be off at temperatures above -15C. The lot will function as above to accommodate 24/7 function of the facility. Electrical savings will result from reduced energy consumption and reduced electrical demand.

Scope
IPLC controllers will be installed to replace 11 duplex receptacles and programmed to cycle 40% of the time when the temperature is between -5C and -15C, 70% of the time between -15C and -25C and 100% of the time when the temperature is -25C or colder.

Building Envelope Sealing
Overview
An investigation to upgrade the current conditions of the building envelope was conducted by CANAM Building Envelope Specialist. The results of this investigation have uncovered several areas where the building envelope can be upgraded in order to reduce heating costs. Most of the areas where improvements may be made within the confines of the performance contract involve low cost sealing of identified cracks around doorways.

Scope
The scope of work detailed by CANAM recommends the installation of weather stripping and sweeps at 5 exterior as well as the adjustment of the door center on the main entrance doors. Weather stripping of 2 interior doors to mechanical spaces as well as the weather stripping of the patio door in the staff lounge is also recommended.

Backflow Prevention (VFA)
Overview
Backflow occurs when the water flows in the opposite direction from its normal flow. The cause of a backflow is a change in pressures. This reversed direction of water flow may allow contaminants to enter the drinking water system through cross-connections. Backflow Prevention is a strategy whereby a valve is placed in the domestic water supply line of a given facility in order to prevent contamination by pollutants due to ‘backflow’ in the system. Examples of testable backflow preventers used for medium to high hazard processes include: reduced-pressure principle assemblies, double-check valve assemblies and pressure vacuum breaker assemblies.

Scope
Backflow Prevention double-check valve assemblies will be installed in both the domestic and fire pump water supply pipes in order to comply with the 1995 National Building Code part 7.6.2.3 and CSA.Z317.1 Canadian Standards Association Special Requirements for Plumbing Installations in Health Care Facilities, Section 6.3.3.5.