Request for Bulletin 851 – Fenwal CPD‑1201 Manual (Wiring Diagram Needed)

Fire Alarm General Discussion
1

Hello everyone,

I’m currently working on a field intervention involving several Fenwal CPD‑1201 combustion products detectors. I urgently need the official wiring diagram and installation manual, especially the Bulletin 851 referenced on the label.

The detectors are used in a 24VDC system, and I need clarity on the proper cabling (base, EOL resistor location, contact logic – NO/NC).

If anyone here has the full PDF manual or Bulletin 851 for CPD‑1201, could you kindly share it or point me to a reliable source to download it?

Any help would be greatly appreciated.

Best regards,
Excellence Kanyali
Electrical Engineering Student – RDC

2

I was only able to find a manual for a CPD-7051 but the 1201? Not really sure if one exists.

3

There’s not much I can find online. It might be wired similarly to some later Fenwal detectors, but I can’t say that’s correct.

I tried looking for any possible re-brands through old NFPA Journals just to see if they had their manuals out there, but they all either didn’t have a model listed or used the same model which didn’t pull any results.