Domestic Water Pressure Booster Sizing Part 2: Sketching It Out
/
When sizing a pressure booster you should always begin with a simple sketch of the system, including…
Read More
Domestic Water Pressure Booster Sizing Part 1: A Road Map for Success
/
No engineer ever wants to find out that a design error is the source of insufficient water pressure in a new hotel or apartment building. But make no mistake, when tenants on the top floor of a building can’t flush the toilet or rinse…
Read MoreDomestic Hot Water Recirculation Part 8: Proper Application of Pressure Reducing Valves
/Pressure reducing valves (PRVs) are a necessary component in just about any domestic hot water system served by a high-pressure domestic water supply main. In this blog we’ll discuss how to apply PRVs properly so that these “necessary components” don’t become necessary evils that create water service problems and huge energy penalties for owners.
Read MoreDomestic Hot Water Recirculation Part 7: Balancing Systems with Multiple Risers
/Ever have to wait 2 or 3 minutes (or longer) for hot water to arrive at the shower in a hotel room? If you know a little about plumbing design you may assume you’ve had the misfortune of choosing a hotel without a recirculation system. But chances are the hotel does have a recirculation system, it just isn’t properly balanced.
Read MoreDomestic Hot Water Recirculation Part 6: Maintaining Temperature Control In Systems with Steam Instantaneous Water Heaters
/Applying recirculation to domestic hot water systems with steam type instantaneous water heaters requires a little extra attention. The challenge is temperature control. Under very low load conditions, instantaneous water heater supply temperatures may fluctuate rapidly – even dangerously. Here’s why:
During periods of light draw, the heater flow rate may become unstable, fluctuating between a minimal/no load draw recirculation flow rate and that same flow rate plus the draw of a single fixture. That’s what happens when a single hotel guest decides to take a shower at 3AM.
Read More