Raypak 500 - Manual (Page 21)

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3. Create a hole to route the communication cables
through where the dimples are in the side of the
cabinet (see Fig. 15), or route the wires to the rear
junction box and out of the cabinet.
4. Connect the boilers in a daisy chain configuration
as shown in Fig. 17 above. It is best to wire the
boilers using the shortest wire runs rather than try-
ing to wire them in the order that they are
addressed. The communication bus jacks on the
customer connection panel are interchangeable
so you can use either one or both in any order to
connect the cable to. If you have connected the
boilers to each other properly, two of the boilers
will have one open connection port on them.
Fig. 17: XFyre Cascade System Wiring