Chiller Replacement Project

Chiller Replacement Project

The client had an application for a replacement chiller. The existing centrifugal chiller had aged beyond its useful life of reliable and efficient operation. Like most large office, hospital or other institutional buildings the cooling plant is located in the basement of the structure.

Chiller Access

Chiller Access

Access into the into the basement mechanical room can be a challenge. In some retrofit cases excavation, removal of walls, and holes cut into the floors may be required to remove an install a new chiller. Multistack has just the ideal solution with their modular chiller that can be fit through a normal doorway or freight elevator.

Existing Chiller

Existing Chiller

Existing chiller is a 250 ton centrifugal chiller utilizing R-11 refrigerant and electro-mechanical type controls. Maintenance Costs, reliability and equipment efficiency warranted the opportunity for the upgrade.

Rental Chiller

Rental Chiller

The client due to unreliable operation of the chiller had acquired a rental chiller to provide chilled water to maintain conditions for the visitor’s center and critical IT operations that are positioned in the building. A quick installation of modular chiller would also minimize the equipment rental cost for the client.

Extraction

Extraction

Existing chiller cut into sections and extracted from the mechanical room

Individual Module

Individual Module

(4) Modules – Nominal 70 ton scroll modules Single Point power connection – junction box with buss-bar 330 MCA / 400 Amp Panel 460 volt / 3 phase Part Load Performance - IPLV – 0.594 kW/ton Access to Mechanical Room – each module thru freight elevator Critical operation – system built up of 4 independent modules Stocked at Factory – modules are readily available for installation Complies with ASHRAE – 15: 24 lbs. / R-410a Per Circuit no ventilation or refrigeration detection system required.

Performance

Performance

Old Chiller - one last look.

Old Chiller - one last look.

Existing 250 ton Centrifugal Chiller before dismantled and removed.

Clear Pad

Clear Pad

Mechanical pad clear for installation of the new chiller.

New Multistack Chiller

New Multistack Chiller

Electrical Junction Box

Electrical Junction Box

Electrical Busbar

Electrical Busbar

Debris Management

Debris Management

Automatic Blow down set by controls

Sketch

Sketch

Picture20

Picture20

Old Elctro Mechanical Controls

Old Elctro Mechanical Controls

Controls replaced.

New Chiller Controls Upgrade

New Chiller Controls Upgrade

Chiller upgraded with state of the art DDC controls that can be integrated with an existing BMS system.

The client  had an application for a replacement chiller.
The existing centrifugal chiller  had aged beyond its useful life of 
reliable and efficient operation.

Like most large office, hospital or other institutional buildings the 
cooling plant is located in the basement of the structure.Access into the into the basement mechanical room
can be a challenge.  In some retrofit cases excavation, 
removal of walls, and holes cut into the floors may be 
required to remove an install a new chiller.

Multistack has just the ideal solution with their 
modular chiller that can be fit through a normal 
doorway or freight elevator.Existing chiller is a 250 ton centrifugal
chiller utilizing R-11 refrigerant and 
electro-mechanical type controls.  Maintenance
Costs, reliability and equipment efficiency
warranted the opportunity for the upgrade.The client due to unreliable operation of the chiller had 
acquired a rental chiller to provide chilled water to maintain conditions for the visitor’s center and 
critical IT operations that are positioned in the building.

A quick installation of modular chiller  would also minimize 
the equipment rental cost for the client.Existing chiller cut into sections and 
extracted from the mechanical room(4) Modules – Nominal 70 ton scroll modules
Single Point power connection – junction box with buss-bar 
330 MCA / 400 Amp Panel 460 volt / 3 phase
Part Load Performance - IPLV – 0.594 kW/ton
Access to Mechanical Room –  each module thru  freight elevator
Critical operation – system built up of 4 independent modules 
Stocked at Factory – modules are readily available for installation
Complies with ASHRAE – 15: 24 lbs. / R-410a Per Circuit 
no ventilation or refrigeration detection system required.PerformanceExisting 250 ton Centrifugal  Chiller before dismantled and removed.Mechanical pad clear for installation of the new chiller.New Multistack ChillerElectrical Junction BoxElectrical BusbarAutomatic Blow down set by controlsSketchPicture20Controls replaced.Chiller upgraded with state of the art DDC controls that can be integrated with an existing BMS system.