11BCIT Hydronics control system
servicing and maintenance with correct
answers 2026
1.-What-is-the-typical-system-design-pressure-for-a-residential-hydronic-boiler?---correct-
answers--a)-12---15-psig-(83---103-kPa)
1.-What-should-be-checked-first-if-the-boiler's-system-pressure-is-higher-than-normal?---
correct-answers--a)-PRV
1.-You-tell-if-a-differential-pressure-bypass-valve-is-working-correctly-if-the-pressure-at-the-
discharge-side-of-the-pump-does-not-increase-when-zone-valves-close.---correct-answers--a)-
True
1.-How-can-a-technician-increase-a-hydronic-system's-static-pressure-setting?---correct-
answers--a)-Turn-the-PRV-adjustment-clockwise
1.-If-a-boiler's-burner-will-not-fire,-which-of-the-following-should-be-checked-first?---correct-
answers--a)-Aquastats
1.-What-is-the-likely-cause-of-incomplete-combustion-and-high-flue-stack-temperatures?---
correct-answers--a)-Over-firing-the-burner
servicing and maintenance with correct
answers 2026
1.-What-is-the-typical-system-design-pressure-for-a-residential-hydronic-boiler?---correct-
answers--a)-12---15-psig-(83---103-kPa)
1.-What-should-be-checked-first-if-the-boiler's-system-pressure-is-higher-than-normal?---
correct-answers--a)-PRV
1.-You-tell-if-a-differential-pressure-bypass-valve-is-working-correctly-if-the-pressure-at-the-
discharge-side-of-the-pump-does-not-increase-when-zone-valves-close.---correct-answers--a)-
True
1.-How-can-a-technician-increase-a-hydronic-system's-static-pressure-setting?---correct-
answers--a)-Turn-the-PRV-adjustment-clockwise
1.-If-a-boiler's-burner-will-not-fire,-which-of-the-following-should-be-checked-first?---correct-
answers--a)-Aquastats
1.-What-is-the-likely-cause-of-incomplete-combustion-and-high-flue-stack-temperatures?---
correct-answers--a)-Over-firing-the-burner
