Section 2 — Installation
2-8 Part No. 750-263
21.Route return water sensor (the 2-wire sensor) to the lower pipe on back
of boiler, and install lower panel. Coat sensor with heat-conductive
compound P/N 872-00631. Insert sensor into return pipe sensor well
and secure with mounting clamp (Figure 2-13).
22.Coat outlet feed water temperature sensor (the 3-wire sensor) with heat-
conductive compound P/N 872-00631. Insert sensor in sensor well
behind the burner (Figure 2-14).
Figure 2-12
A
B
Figure 2-13
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