Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
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title: Plumbing Pumps
…285 unchanged lines
```
−## The pump shall be sized to maintain not less than 122°F at the furthest fixture under the no-load condition; undersizing by ignoring pipe heat loss produces a pump that cannot maintain loop temperature, which is the single most common recirculation failure. {note}
+## The pump shall be sized to maintain not less than 122°F at the furthest fixture under the no-load condition; undersizing by ignoring pipe heat loss produces a pump that cannot maintain loop temperature, which is the single most common recirculation failure.
−## Motor horsepower shall be the smallest size that delivers the scheduled duty point; most residential and small commercial recirculation circulators fall between 1/40 HP and 1/6 HP, and large building mains rarely exceed 5 HP. {note}
+## Motor horsepower shall be the smallest size that delivers the scheduled duty point; most residential and small commercial recirculation circulators fall between 1/40 HP and 1/6 HP, and large building mains rarely exceed 5 HP.
```datasheet
…189 unchanged lines
## Without a check valve, thermal convection can drive reverse flow through an idle recirculation pump, defeating the temperature-maintenance intent and stressing the pump bearing; the check valve is not optional on a recirculation loop. {note}
+## The isolation and check valve provision shall be specified for each pump, and a check valve shall be furnished on every recirculation pump to prevent thermally driven reverse flow.
+
```datasheet
label: Isolation and Check Valve Provision
…117 unchanged lines
## Spare parts shall be delivered in labeled packaging identifying the pump type and the part, and shall be turned over to the Owner at Substantial Completion.