Cambridge Air Solutions
52
S-Series Technical Manual
• Wiring
o Wiring from the heater to the RCS is 24 VAC
Class 2 control wiring, 7 to 10 wires (typical), 18
AWG minimum.
• It should be run separately from the
power wiring.
• Consideration should be given to the
appropriate wire gauge needed for the
length of wire required.
o For remote temperature sensors, use 2-wire shield-
ed twisted-pair, 18 AWG minimum.
• The 2-wire shielded twisted-pair is low
voltage DC control wiring. It can be run
in the same conduit with other low volt-
age DC control wiring.
• It should be run separately from the AC
power wiring.
• Consideration should be given to the
appropriate wire gauge needed for the
length of wire required.
• The shield should be grounded at the RCS
end only.
o For Electronic Discharge – Space Modulation
(EDSM) and Electronic Discharge – Remote
(EDR)
• Run 2-wire shielded twisted-pair, 18
AWG minimum, from the heater to termi-
nals 21 & 22 the RCS.
• The 2-wire shielded twisted-pair is low
voltage DC control wiring. It can be run
in the same conduit with other low volt-
age DC control wiring.
• It should be run separately from the AC
power wiring.
• Consideration should be given to the
appropriate wire gauge needed for the
length of wire required.
• The shield should be grounded at the RCS
end only.
