User Guide

4 © Copyright 2008 TAC All Rights Reserved. F-18783-4
Bulb Mounting
The remote sensing bulb may be mounted in ducts or liquid lines.
Outdoor
Install with AT-211 kit as shown in Figure-5.
1. Mount bulb to outside wall or surface with bulb clip.
2. Place shield over bulb and fasten to mounting surface.
Duct
Install bulb with AT-208 kit as shown in Figure-6 below.
Liquid Line and Tank
1. Install AT-201 or AT-203 bulb well.
2. Install thermal bulb and tighten sealing bushing.
Bulb Well Installation Limitations
Figure-5 Outdoor Bulb Mounting.
Shield
Clip
V
V
Figure-6 Duct Bulb Mounting.
Cut 7/8" Dia.
Hole in Duct
Sealing Gasket
(AT-208)
Coiled
Bulb
Mounting Bracket
(
AT-208
)
Support Spring
on Capillary
V
V
V
V
Cut 3/4" Dia.
Hole in Duct
Sealing Gasket
(AT-208)
Straight
Bulb
Mounting Bracket
(
AT-208
)
Support Spring
on Capillary
V
V
V
V
Figure-7 Liquid Line and Tank Bulb Mounting.
3/4" MNPT Fitting
of AT-201 or AT-203
Pipe Tee
Bulb Well
AT-201 or AT-203
V
Sealing
Bushing
Bulb
V
V
V
V
Part
Number
Application Limitations at 250°F
Fluid Temp. (Max. 350°F)
Max. Recom.
Velocity (FPS)
Max. Recom.
Static Pressure
(psig)
AT-201 11 250
AT-203 20 500
Figure-8 Bulb Well Installation Limitations.
V
FLOW
Straight Pipe Mounting
Note: Angle must not allow
end of well to contact
side of pipe.
Elbow
Mounting
F
L
O
W
V
F
L
O
W
V
Tee
Mounting
Tee
Mounting
V
FLOW