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ii © Copyright 2006 TAC. All Rights Reserved. F-27414-1
Primary Designation
(First Letter)
A Accessories
H Humidity
P Pressure
S Switch or Step Controller
V Valve
C Controller or
Controlled Device
M Motor (Actuator)
R Receiver-Controller or
P.E. Switch
Alpha Prefix Combinations
AD accessory, electronic or
electronic control package
AE accessory, electric
AH accessory, humidity
AK pneumatic relay or positioner
AKR accessory, pneumatic
replacement
AKS accessory, pneumatic
AL accessory, pneumatic or
E.P. relays
AM accessory, motor
AP accessory, pressure
ASP accessory, electronic
AT accessory, thermostat
AV accessory, valve
C cover, 2" x 2" pneumatic
thermostats
CC controller/controlled device,
electronic
CN multi-purpose bridge,
electronic
CP controller/controlled device,
electronic
CT cover, 2" x 2" pneumatic
thermostats
H humidistat or humidity
transmitter, pneumatic
HC humidity, two-position
(three-wire), electric
HKS humidity or enthalpy
transmitter, pneumatic
HS humidity sensor, electronic
HSP humidity transmitter,
electronic
HTSP humidity/temperature
transmitter, electronic
M motor, pneumatic, with or
without positioner
MA motor, two-position, spring
return, electric
MC motor, two-position
(three-wire), electric
MCS accessories, modular control
systems (TAC
PNEUMODULAR
®
)
ME motor
MF motor, floating, proportional
MK motor, pneumatic
MK4 motor, pneumatic with
positive positioner
MM motor, modular
MMC control card, modular motor
MMR replacement motor, modular
MP motor, proportional, electric or
electronic
MS motor, proportional, electronic
MU motor, proportional, temp.,
electric or electronic
N thermostat, accessories
P pressure or differential
pressure transmitter, or
receiver-controller, pneumatic
PC pressure, two-position
(three-wire), electric
PCP TAC PNEUMODULAR control
panels
PF pressure, floating, electric
PKSR differential water pressure or
air velocity transmitters,
pneumatic
PP pressure, proportional,
electric or pneumatic
R electric power relays,
pneumatic relays, P.E.
switches, and VAV controllers
RKS receiver-controller, pneumatic
RKSR receiver-controller, pneumatic
replacement
S switch, pneumatic
SLC controller, solid-state
SP step controller, proportional,
electric, pneumatic, or
electronic
T thermostat or transmitter,
pneumatic
TA thermostat, two-position,
electric
TC thermostat, two-position,
electric
TF thermostat, floating
THC enthalpy controller, electric
THCR enthalpy controller, electric
replacement
TK thermostat, pneumatic
TKR thermostat, pneumatic
replacement
TKS temperature transmitters,
pneumatic
TOOL calibration fixtures, kits,
and tools
TP thermostat, proportional,
electric or electronic
TR thermostat, pneumatic
replacement
TS temperature sensor,
electronic
TSP temperature transmitter,
electronic
VA valve, two-position, spring
return, electric
VB val
ve body
VC valve, two-position
(three-wire), electric
VK valve, pneumatic
VK4 valve, pneumatic with positive
positioner
VM valve, modular motor
VP valve, proportional, electric
or electronic
VS valve, electronic
Manufactured Parts
Numbering System