SHI Technology & Digital Tools 3

Question 1

What does the term 'data logging interval' refer to in a solar thermal monitoring system?

Accepted Answer

The frequency at which the system records sensor measurements

Answer

Data logging interval defines how often (e.g., every 1 minute or 5 minutes) the monitoring system captures and stores sensor readings.

Question 2

A solar thermal installer references SRCC OG-100 certification data when selecting collectors. What does this document provide?

Accepted Answer

Standardized thermal performance ratings tested under controlled conditions

Answer

SRCC OG-100 certification provides independently verified thermal performance ratings including efficiency curves for solar collectors.

Question 3

Which digital tool would best help a solar installer calculate the correct pipe diameter to minimize pressure drop in a long collector loop?

Accepted Answer

A hydronic system sizing calculator or software

Answer

Hydronic sizing calculators use flow rate, pipe length, and fluid properties to determine optimal pipe diameter for acceptable pressure drop.

Question 4

When a solar controller displays an 'E3' or similar error code, what should the installer's first digital troubleshooting step be?

Accepted Answer

Consult the manufacturer's digital documentation or error code lookup tool

Answer

Manufacturer documentation or support apps provide specific error code definitions, guiding accurate diagnosis before any hardware changes.

Question 5

What is the advantage of using a wireless temperature sensor node over a wired sensor in a large commercial solar thermal array?

Accepted Answer

Installation is faster and avoids long conduit runs across the roof

Answer

Wireless sensor nodes eliminate long wiring runs and conduit installation across rooftops, reducing labor and material costs in large arrays.

(SHI) Solar Heating Installer Certification Practice Test