Cabinet shell
Satin-coat galvanized steel, powder-coated and baked.
Source: Dennis Campbell, philosophy document, Cabinet
What a fabrication drawing would need
Sheet gauge, panel joints and fastener schedule are not in the supplied sources.
How a water source heat pump moves heat, and how the cabinet is built to serve.
Interactive principles and construction layers. Every statement carries a tier: source-supported by Dennis Campbell's documents, a cited engineering principle, an inference in the visualization, or a proposed improvement.
Claim tiers
Product claims about legacy Polar Bear equipment come only from the supplied manufacturer documents. General principles are cited to public technical sources. Nothing here adds a new rating, tolerance or certification.
01 · REFRIGERATION PRINCIPLES
One sealed circuit, two directions.
A heat pump moves heat with a refrigerant that boils at low pressure and condenses at high pressure. The reversing valve chooses which coil does which job.
- Source-supportedStated in Dennis Campbell's supplied Polar Bear documents.
- Engineering principleGeneral principle from a cited public technical source.
- Inferred in visualizationShown in the CAD or diagrams from photographs or common practice; not documented in the supplied sources.
- Proposed improvementA modular-platform concept intent, not built or tested.
HEATING MODEToggle heating or cooling
02 · SOURCE, LOAD AND AIR PATHS
Where each fluid goes.
Toggle overlays on a conceptual vertical water-to-air cutaway. Select any component to inspect its claim tier and what a fabrication drawing would still need.
CONCEPTUAL CUTAWAYProportions illustrative · not a fabrication drawing
Choose an overlay to read what it shows and its legacy basis.
03 · CABINET ASSEMBLY
Built in layers.
Shell, lining, drainage, electrical placement and the heat exchangers, each with its source and the measurement a factory drawing would still need.
Acoustic lining
One-inch acoustically lined sound-absorbing material inside the cabinet.
Source: Dennis Campbell, philosophy document, Cabinet
What a fabrication drawing would need
Material type, density and coverage area.
Pipe grommets
Rubber grommets at all water pipe openings, protecting against vibration and electrolysis between copper tube and steel cabinet.
Source: Dennis Campbell, philosophy document, Cabinet
What a fabrication drawing would need
Opening positions and sizes per model.
Stainless condensate pan
Stainless steel pan beneath the air coil.
Source: Dennis Campbell, philosophy document, Cabinet
What a fabrication drawing would need
Pan depth, slope and drain size.
Electrical compartment above the pan
Control cabinetry located above the condensate pan and drains, which reduces its exposure to condensate leaks. Pan overflow protection and compartment isolation remain design considerations.
Source: Dennis Campbell, philosophy document, Cabinet (placement); the exposure statement is a general principle
What a fabrication drawing would need
Compartment dimensions and separation detail.
Air coil
Rifled tube, lanced fins, described as oversized for the unit size.
Source: Dennis Campbell, philosophy document, Air Coils
What a fabrication drawing would need
Face area, rows, fin spacing and circuiting.
Water coil
Coaxial tube in a clover-leaf shape with convolutions; copper or copper-nickel.
Source: Dennis Campbell, philosophy document, Water Coil
What a fabrication drawing would need
Exchanger length, diameter and pressure rating.
ECM blower
Electronically commutated motor, minimum five speeds, gentle start.
Source: Dennis Campbell, philosophy document, Fan Efficiency
What a fabrication drawing would need
Wheel size, motor rating and mounting.
Compressor and mounts
Scroll compressor in larger units and rotary in condo units are sourced; the isolation-mount detail is inferred in the visualization.
Source: Dennis Campbell, philosophy document, Compressor; mounting inferred
What a fabrication drawing would need
Mount type, base plate and clearance.
Relay-based controls
Standard over-rated relays, contactor and transformer; one generic anti-short-cycle and lock-out board.
Source: Dennis Campbell, philosophy document, Electrical Control Components
What a fabrication drawing would need
Wiring diagram for each model.
04 · SERVICE ACCESS AND REMOVAL
What comes out, and in what order.
Step through the removal order. Steps that open the refrigerant circuit are flagged: they require recovery by a licensed technician.
Assembled
Refrigerant recovery required before this step.
The cutaway above dims each removed component. Removal order for the legacy cabinets is inferred from photographs; the two-section concept proposes that the blower tray, filters and controls be removable without refrigerant work.
Two-section modular conceptThe proposed architecture: a sealed thermal core and an air-movement and control section joined by a dry air joint.Drilling-site sequenceFrom utility locates to commissioning, with primary-source citations.Technical resourcesThe original specification, design philosophy and photo library.
REFERENCES
Sources
Public engineering sources and the supplied manufacturer documents used on this page.
- Heating and cooling with a heat pump ↗Natural Resources Canada. Refrigeration cycle definitions and COP.
- Philosophy for Polar Bear Web Site (historical design philosophy)Dennis Campbell. Cabinet, coil, blower, condensate, circulator and control statements about legacy equipment.
- Heat Pumps Manufactured by Polar Bear Water Source Heat Pump Mfg. Inc. (16 pages)Dennis Campbell. Legacy families, cabinet sizes and nomenclature for desuperheaters and duct heaters.