NABCEP SHI case studies
NABCEP SHI · Put your knowledge to work in context.
The NABCEP Solar Heating Installer Board Certification is a board certification for the people who physically install solar water and pool heating systems on buildings. NABCEP's Job Task Analysis for the credential is explicit about the boundary: its tasks apply to installation personnel, not to the system designer. The NABCEP SHI case studies are 5 cases and about 3,361 words.
1Fall, Heat, Chemical, and Electrical Hazards on a Two-Story Roof
A crew of three is installing a 120-gallon solar water heating system with two 4 ft x 8 ft flat-plate collectors on a 5:12 asphalt-shingle roof of a two-story house. Afternoon ambient is 96°F and the roof surface measures 148°F.
678 words, about 3 min2Sizing and Design Review for a Pool Collector Array in Tucson
A homeowner in Tucson, Arizona, has an 18 ft x 36 ft rectangular pool (648 ft² surface) with a 400,000 BTU/h gas heater, a 1.5 hp pump, a 24-inch sand filter, and 2-inch PVC return lines. They want unglazed polypropylene pool collectors.
759 words, about 4 min3Standing-Seam Attachment and Wind Uplift at a Coastal Site
A contractor is mounting three 4 ft x 10 ft flat-plate collectors on a standing-seam metal roof. Each collector weighs 85 lb dry and holds 4.5 gal of 50% propylene glycol.
627 words, about 3 min4Expansion Tank, Relief Valve, and Glycol Diagnosis on a Closed Loop
A pressurized closed-loop glycol system serves an 80-gallon solar storage tank. The collector array holds 9 gallons, the piping holds 6 gallons, and a 4.4-gallon bladder expansion tank is precharged to 12 psi on the pump suction.
667 words, about 3 min5Commissioning a Drainback System: No Flow, Sensor Wiring, and Handover
A new drainback system with two 4 ft x 8 ft flat-plate collectors, a 120-gallon storage tank, and a 1/6 hp AC pump is being commissioned. The differential controller has an on setpoint of 8°F delta-T and an off setpoint of 4°F delta-T.
630 words, about 3 min