TAC Pneumatic Products Catalog

Specifications
Control action Refer to Model Chart.
Construction Glass-filled nylon.
Maximum ambient temperature 140�F (60�C).
Supply air pressure Clean, dry, oil free air required.
Nominal 15 to 25 psig (103 to 172 kPa).
Maximum 30 psig (207 kPa).
Connections Barbed nipples for 1/4 in. O.D. polyethylene tubing.
Air consumption 29 scim(7.9 mL/s).
Air flow capacity 60 scfh (1.7 scmh).
Adjustments
Accessories
Model No. Wholesale Model No. Description
K503 22-151 Optional mounting bracket.
TOOL-082 � 5/64 in. hex wrench.
Typical Applications
Figure 1 R503-1, R503-2 Typical Application.
Figure 2 R503-3 Typical Application.
R503 Series (2353-5xx Series)
Knob operates over two revolutions. A moving pointer slide is provided to indicate both inner and
outer scales.
Mounting
Designed for use on MCS-S manifold socket. These devices can also be surface mounted by using
the K503 mounting bracket.
Dimensions Refer to Model Chart.
Active Connections
Port Description
M Main.
S Signal.
S2 Signal 2 (R503-3 only).
C Common.
NO Normally open.
NC Normally closed.
From Air-Handling Unit
Mixed Air Controller
From Temperature
Controller
M NC NO C S
R503
Diverting Relay
N100-0010
Temperature
Transmitter
located in
Outdoor Air
F-27383-1 © Copyright 2006 TAC. All Rights Reserved. 91
M
M
M
M NC NO C S
R503-3
Diverting Relay
S2
To Minimum-Position
Switch for O.A., Return
and Relief DAmpers
To Minimum Position
Switch for Damper Actuators
From Return Air
Enthalpy Transmitter (DA)
From Outdoor Air
Enthalpy Transmitter (DA)