Outdoor Knight Boiler Installation & Operation Manual
3 Hydronic piping
12. | System temperature sensor: |
| Lochinvar supplies a system temperature sensor. |
| The sensor is to be installed in the heating loop |
| downstream from the boiler hot water piping and |
| heating loop junction. Typically the sensor will be |
| located far enough downstream to sense system diluted |
| water temperature. |
13. | Indirect water heaters: |
Lochinvar offers the Squire which is a series of indirect water heaters. The Squire features a stainless steel vessel with a single wall stainless steel heat exchanger.
It is up to the installer to ensure the CAUTION minimum system flow is not less than the
minimum boiler flow at any time.
The outdoor boiler may be piped to an indirect |
water heater to heat domestic hot water with the space heat |
transfer medium. As depicted on pages 17 through 23 |
there are two options when utilizing an indirect water |
heater. |
A. The space heating piping will branch off to flow the |
space heat transfer medium through a single wall |
heat exchanger coil inside the indirect water heater. |
WARNING
The National Standard Plumbing Code and the Uniform Plumbing Code limit the pressure of the heat transfer fluid to less than the minimum working pressure of the potable water system up to 30 psi maximum. Also, the heat transfer fluid must be water or other
B. The indirect water heater is connected to the system | |
supply piping. | A pump controlled by the |
outdoor boiler’s control will regulate the flow of water through the indirect water heater. The indirect water heater’s temperature will be regulated by the outdoor boiler’s control.
The outdoor boiler is
14.Y-Strainer:
Field supplied. A
Circulator sizing
The outdoor boiler heat exchanger does have a pressure drop, which must be considered in your system design. Refer to the graph in FIG.
Near boiler piping connections
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| WATER PUMP |
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| EXPANSION TANK | ||
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| PUMP | PUMP |
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