100+ Free FL Rooftop Solar Heating Practice Questions

Foundations of Solar Heating Technology

Historical context and evolution of solar heating, basic solar thermal principles (conversion of solar energy to heat, solar radiation, thermal storage), and solar heating applications including domestic hot water and solar pool heating.

Components of Solar Heating Systems

Solar collectors (flat-plate and evacuated tube construction, operation, suitability), storage solutions (tank types, linings, anode protection), heat exchangers (internal and external, double-wall), pumps, controllers, sensors, glazing, selective surfaces, and SRCC OG-100 collector ratings.

Solar Thermal System Design

Collector area sizing and tilt/orientation, active vs passive systems, direct vs indirect (closed-loop) circulation, drainback and thermosiphon and ICS system types, daily hot water load calculation, BTU and solar fraction, heat exchanger and expansion tank sizing, freeze protection design, stagnation, and pressure relief.

Installation Practices for Solar Heating Systems

Roof penetrations and flashing, stanchion and standoff mounting, wind uplift resistance, collector attachment to rafters, piping insulation and UV protection, pipe support spacing, reverse-return header layout, sensor placement, air venting, pressure testing, storage tank and expansion tank placement, heat exchanger installation, bonding and grounding, and check valve installation.

Electrical Basics for Solar Installers

Differential controller wiring and sensor circuits, pump circuit ampacity and conductor sizing, GFCI protection for wet locations, disconnect requirements, grounding vs bonding, equipment grounding conductor sizing per NEC, low-voltage control design, and PV-direct pump configurations.

Hydraulics and Plumbing for Solar Thermal Systems

Collector flow rates (gpm per ft squared), pressure drop and pump head calculations, pipe sizing and velocity limits, check valves and thermosiphon prevention, tempering (mixing) valves, backflow prevention, drainback reservoir sizing, propylene glycol concentration and properties, air elimination, balancing valves, and winterization procedures.

Compliance with Codes and Standards

SRCC OG-100 (collector) and OG-300 (system) certification, Florida Building Code Plumbing, Residential, and Mechanical volumes, permitting requirements, inspection sequence, tempering valve code requirements, roof attachment provisions, and the approved DBPR reference list (FSEC, NABCEP, NRCA, OSHA, FBC).

Operational Maintenance and System Troubleshooting

Diagnosing no-heat and pump-not-running conditions, airlock identification, hard-water scaling, anode rod replacement and sediment flushing, pump short-cycling, stagnation during pump failure, sensor fault diagnosis, glycol pH and freeze-point testing, pressure loss investigation, leak detection and repair, reverse thermosiphon heat loss, and shading assessment.

Safety and Best Practices in Solar Installations

OSHA 29 CFR 1926 fall protection (6-foot threshold), thermal burn and hot-system hazards, lockout/tagout for electrical service, T&P relief valve discharge response, material handling and tank lifting, and ladder safety (4:1 angle, 3-foot extension).

Solar Project Management and Professional Responsibilities

Scope-of-work limits under Rule 61G4-15.012 (one-to-three family residences, two stories), material estimating from FSEC sizing guidelines, project sequencing (contract, permit, install, inspect, commission), subcontracting requirements for out-of-scope work (pool equipment, electrical, plumbing), and warranty practices.