5 circulators + argo arm 6

[bugguts]

.........need suggestions/tips.......left in the lurch by a "plumber" who is now residing with the " state"..........:D
[CENTER][CENTER]
I have all the circulators on one circuit... now we want to
1) put in thermostats in each room.. using The ''round ct 87'' in most for heat only main has a programable for heat ac.....
what gauge , 2 conductor ok?
2) wire up the argo arm 6 for a tankless oil furnace , hot water......to the circulators........
can we use romex,,, or armored BX? from the circulators to the arm6
thanks
open to all constructive ideas...........

[CHH]

18 gauge is common for thermostat wire - 2 conductor is minimum required for heat only - you'll need at least 4 conductor for heat and A/C

I've seen power to circulators handled with either armored or an appliance cord and plug (the receptacle was on conduit). Not sure if the appliance cord would be acceptable these days but it worked fine for years. I'm fairly certain that exposed NM is not acceptable.

[seaneys]

The big box stores actually sell spools for thermostat with 4 and 6 conductors. I have been pulling 6 just to be real paranoid.