Installation & Operation Manual
6 Hydronic piping (continued)
Variable speed pump option
Table 6B Recommended Variable Speed Pumps
Minimum Temperature Rise*
Model |
| Pump |
|
Grundfos | TACO | Wilo | |
|
| 0013 IFC VS | Stratos 1.25 3 x 30 |
51/81 | 20.3 | 20.3 | 21.7 |
106 | 22.3 | 21.0 | 21.5 |
151 | 21.2 | 19.8 | 19.1 |
211 | 26.8 | 25.1 | 23.6 |
*The minimum temperature rise is derived from the chart in FIG.
The shaded regions of pump coverage are only available for applications with 230V (60 Hz) supply voltage, all others are to be 115V. (A field supplied relay is required to connect the 230V pump listed in the shaded area in Table 6B to the boiler high voltage terminal strip.)
Variable speed pump setup
Before operation, ensure the following:
-Pump is set for an input signal of 0 - 10Vdc by the dip switches on the pump control
-Pump is set for external signal control (if applicable)
-Pump is set for linear output (if applicable)
-If pump does not come equipped with a 0 - 10 Vdc input option, an optional module will be required from the vendor
NOTICE
Pump sizing and flow requirements are based on 20 feet of piping, 4 - 90° elbows, and 2 - fully ported ball valves.
NOTICE
It is required that near boiler piping systems utilize Primary/Secondary configurations as shown in FIG.’s
SMART SYSTEM / Multi-temperature loop control option
The Knight wall mount boiler is capable of producing up to three (3) set point temperatures to meet different space heating demands. When using more than one temperature demand it is necessary to protect the lower temperature loop from overheating. To help aid with this protection, Lochinvar offers the Multi- Temperature Loop Control Board Kit (RLY30086).
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