Install Instructions

www.emersonclimate.com/owcontrols
202CB and 204CD Solenoid Valves
202CB and 204CD Solenoid Valves
Instruction Sheet
PA-00256
June 2011
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA CUSTOMER SERVICE [phone]
SAFETY INSTRUCTIONS
Attention: Read carefully before attempting to install,
operate or service your Emerson solenoid valve. Retain
for future reference.
1. Read safety and installation instructions thoroughly.
Failure to comply can result in valve failure, system
damage or personal injury.
2. Notice: Installer, leave this instruction sheet for own-
ers. Notice to owners: Warning — This product con-
tains a chemical known to the state of California
to cause birth defects or other reproductive harm.
Notice to California owners: Under California ballot
measure proposition 65, California residents must be
notied if a product contains more than
1/1000 of the safe lifetime exposure level of a car-
cinogen or birth defect causing agent. More than 300
chemicals are on the list. This valve contains brass
parts. Lead is present in all forms of brass. To mini-
mize exposure to lead in all water systems, don’t drink
hot water and don’t drink the rst glass of water from a
system. Direct any questions to the Emerson Climate
Technologies Flow Controls Division Applications Engi-
neering Department.
3. Do not use solenoid valves on applications or uid
media not specically cataloged without prior approval
of the Emerson Climate Technologies Flow Controls
Division Applications Engineering Department. Warn-
ing: Do not use with ammable or explosive uids or
gases. Do not use in explosive atmospheres. Use on
these elements can result in product damage, system
damage, or personal injury.
4. Use of solenoid valves on applications not specically
cataloged can result in valve failure, system damage
or personal injury. Do not utilize a solenoid valve on
any system where the system pressure can exceed the
safe working pressure of the valve.
5. Caution: Do not utilize a solenoid valve as a safety
shut-off valve.
6. Do not exceed MOPD (Maximum Operating Pressure
Differential) or valve may fail to open when energized.
7. Caution: Always disconnect power source and depres-
surize the system before working on the solenoid valve
or system. If the power disconnect is our-of-sight, lock
it in the open position and tag to prevent unexpected
application of power.
8. Direction of system ow must correspond to the ow
arrow on the side of the solenoid valve body.
9. Before energizing valve, be sure source voltage and
frequency matches that on the solenoid coil. Do not en-
ergize coil unless coil is securely attached to the valve.
See coil installation instructions.
10. Prolonged use in excessive ambient temperature or
humidity may damage coils
11. Do not dent or bend or use an enclosing tube as a
lever. A damaged enclosing tube may result in a coil
burnout or an inoperative valve.
12. Foreign matter in the valve may result in seat leak-
age, sticking open or closed, or a coil burnout. To
prolong valve life and ensure system cleanliness, use a
strainer.
INSTALLATION INSTRUCTIONS
1. For ease of installation, an Emerson solenoid valve
can be installed in any position … gravity does not af-
fect its operation. Note: Although these valves can be
operated in any position, by mounting the valve upright
there is less chance of malfunction caused by the col-
lection of foreign material.
2. The solenoid coil can be rotated 360° for ease of
wiring. If possible, do not reduce the length of the sole-
noid coil wire leads, so that if it becomes necessary to
remove the coil at a later date (for valve cleanout, etc.)
the wire leads will not have to be disconnected.
3. To allow for removal of the solenoid coil without remov-
ing the valve from its piping, allow at least 2 inches of
clearance above the solenoid.
4. Be sure the valve is installed so that its ow arrow on
the valve body corresponds to the direction of ow thru
piping.
COIL INSTALLATION INSTRUCTIONS
1. Before removing coil from valve, disconnect the electri-
cal power source. Failure to do so will cause the coil to
burnout.
2. Verify the coil type, voltage and frequency. This infor-
mation appears on the coil name tag.
3. Place the coil over the enclosing tube. Coil may be
rotated 360° for easy wiring. It is recommended that
coil lead connections be soldered on 24V - 50/60 Hz
applications.
4. Install valve name tag. Peel paper backing off valve
name and press down rmly (do not cover other
labels). If installing replacement coil and old style valve
nameplate is in place. If possible retain nameplate, but
do not install over enclosing tube with new coil assem-
bly.
5. Press coil housing down rmly to secure coil retainer
around the enclosing tube.