screws through two holes (knockouts) in back of
case.
Weight
2 lb, 4 oz. (1.02 kg).
Finish
Gray.
5.1 Dimensions
2-3/4 (70)
1-1/16
(27)
1-3/16
(30)
ø 7/8 (22)
1-1/16
(27)
1/4 – 18 "NPT
2-1/4 (57)
4-1/2 (114)
6 ACCessoRIes
50024585-001 Brass steam trap
14026 Steel steam trap
7 InstALLAtIon
WARnInG
Electrical shock hazard!
Can cause severe injury, death or property dam-
age.
– Disconnect the power supply before beginning
installation to prevent electrical shock or
possible equipment damage.
CAUtIon
Equipment damage hazard!
Improper use with a compressor can damage the
controller.
– When using the controller with a compressor,
install a dampening device (such as a needle
valve, header, or surge tank) to dampen
pulsations that can damage the controller or
reduce its life.
– Locate the controller where the ambient temper-
ature will not exceed 150°F (66°C).
– Use pipe compound sparingly to avoid clogging
the hole in the pipe or diaphragm fitting.
– Do not tighten the controller by hand by holding
the case.
➔ After installation is complete, check out the prod-
uct operation as provided in these instructions.
4-11/32 (110) case
1-61/64
1-15/16
(50)
(49)
1-5/32
(29)
3/16 (9) x 21/64 (8)
Knockout
2-1/8 (54)
4-1/2 (114) cover
EN-3
7.1 Installation position
➔ Controllers must be mounted above the water
line in steam boilers.
➔ They can be mounted alongside the pressure
gauge, at a remote location, in a fitting provided
by the boiler manufacturer, or in special mount-
ings on low-water cutoffs.
➔ For mounting dimensions, see Technical data,
page 3 (5.1 Dimensions).
➔ A steam trap must always be connected be-
tween the controller and the boiler. The steam
trap prevents boiler scale and corrosive vapors
from attacking the diaphragm.
1)
1) 1/4"-pipe with 1/4-18 NPT external threads
on both ends and 2-1/4" (57 mm) diameter
loop.
7.1.1 Pressure gauge mounting
➔ To mount the controller alongside a pressure
gauge, remove the gauge.
➔ In its place, install a steam trap (siphon loop) with
a tee on top.
➔ Using elbows and pipe nipples, mount the con-
troller and pressure gauge on the ends of the tee
7.1.2 Remote mounting
CAUtIon
Excessive vibration at the boiler may affect the
operation of the controller. In these cases, the
controller should be remotely located, subject to
the following:
– All piping must be suitable and properly pitched
to drain all condensation back to the boiler.
– The remote mounting must be solid.
– A steam trap must be used at one end of the
piping.
7.1.3 Boiler mounting
➔ If it is not convenient to mount the controller
adjacent to the pressure gauge, install a steam
trap at the location recommended by the boiler
manufacturer, then screw the device directly to
the steam trap.
Controller
Pressure
Tee
gauge
Steam trap
(siphon loop)
Boiler
