Technical Instructions LMV Series
Document No. LV3-1000
Appendix A Page 4 SCC Inc.
Fresh Air Damper
Introduction
In some applications, a fresh air damper is used to bring air into the boiler room during
operation. Typically, it is desired to have the fresh air damper fully open before the combustion
fan turns on, and to leave the damper open until the combustion fan turns off again. The
following procedure will describe how to wire a fresh air damper to the LMV3 so that the
damper is open anytime the combustion fan is on.
Procedure
1. Wire the LMV3, RWF5x load controller, and fresh air damper as shown in Figure 1.
Figure 1: LMV3 Fresh Air Damper Wiring
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