There are minimum flow rate requirements on the boiler to limit the potential for flash-boil, so you wouldn't use a programmable delta-T on the primary loop. Boilers shipped with internal pumps usually have significantly more primary-pumping capacity than the absolute minimum required. If you're going to change it out, consult with the manufacturer. The the UFT series boilers from HTP are designed for pumping-direct (no primary/secondary required), but I'm not sure what the minimum flow requirements are. You can probably run that boiler with a single ECM drive programmed delta-T approach.
Boiler size question
- Thread starter Leon82
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Leon82
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ok, thanks again.
the knight ships with a Grundfos UPS15-58FC.
so the viridian ecm pump can match the same speeds in constant speed mode and provide less energy consumption.
I think it would be best to only use one zone.
the knight ships with a Grundfos UPS15-58FC.
so the viridian ecm pump can match the same speeds in constant speed mode and provide less energy consumption.
I think it would be best to only use one zone.
