Product Overview

Cleveland Controls
DIVISION OF UNICONTROL INC.
1111 Brookpark Rd
Cleveland OH 44109
Tel: [phone]
Fax: [phone]
Email:[e-mail]
Web page: http://www.clevelandcontrols.com
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Bulletin RSS49813.03
Air PrAir Pr
Air PrAir Pr
Air Pr
essuressur
essuressur
essur
e Sensing Switce Sensing Switc
e Sensing Switce Sensing Switc
e Sensing Switc
h Kit with Adjustah Kit with Adjusta
h Kit with Adjustah Kit with Adjusta
h Kit with Adjusta
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bb
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le Set Ple Set P
le Set Ple Set P
le Set P
ointoint
ointoint
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Two Positive Samples: Connect higher
positive sample to H; lower sample to L.
One Positive and One Negative: Connect
positive sample to H; connect negative
sample to L.
Electrical ConnectionsElectrical Connections
Electrical ConnectionsElectrical Connections
Electrical Connections
The snap switch has male quick connect ter-
minals. Before pressure is applied to the dia-
phragm, the switch contacts will be in the
deactivated position as shown in Figure 3.
Reconnect existing wiring to the same ter-
minals as the switch being replaced, i.e.,
NC, NO, and C.
Dimensions in Inches
(Millimeters)
ApplicaApplica
ApplicaApplica
Applica
tiontion
tiontion
tion
Series RSS-498-13 Air Sensing Switch Kits
contain compact, economical Series RSS-
498 switches designed for residential fur-
nace and light commercial aftermarket ap-
plications. The RSS-498 switches have an
adjustable set point range of 1.0"w.c. to
4.0"w.c.(They have been factory set to ac-
tuate on a pressure rise of 1.0"w.c.) The field
adjustability makes these switches ideal for
aftermarket residential furnace applications
and electronic air cleaners and humidifiers.
GenerGener
GenerGener
Gener
al Description &al Description &
al Description &al Description &
al Description &
OperOper
OperOper
Oper
aa
aa
a
tiontion
tiontion
tion
The thermoplastic housing contains a dia-
phragm and snap–acting switch. Barbed
sample line connectors on each side of the
diaphragm accept flexible tubing. The elec-
trical connection consists of male quick
connect terminals.
The snap action switch can be actuated by
a positive or negative pressure, or by a pres-
sure differential.
Mounting (FMounting (F
Mounting (FMounting (F
Mounting (F
igurigur
igurigur
igur
e 1)e 1)
e 1)e 1)
e 1)
Select a mounting location free from vibra-
tion. Mount with the diaphragm in any ver-
tical plane in order to maintain the speci-
fied operating set point. Avoid mounting
with the sample line connections directed
upward. Surface mount via the two 0.14"
slots in the bracket.
Air Sampling ConnectionAir Sampling Connection
Air Sampling ConnectionAir Sampling Connection
Air Sampling Connection
(F(F
(F(F
(F
igurigur
igurigur
igur
e 2, Pe 2, P
e 2, Pe 2, P
e 2, P
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a
gg
gg
g
e 2)e 2)
e 2)e 2)
e 2)
The RSS switches are equipped with two
¼" barbed slip–on sample line connections
(situated on either side of the diaphragm),
which will accept flexible tubing.
Refer to Figure 2 to identify the High inlet
(H) and the Low inlet (L). Connect the
sample lines to the same port or ports as
the switch being replaced.
Positive Pressure Only: Connect the
sample line to H; L remains open to the at-
mosphere.
Negative Pressure Only: Connect the
sample line to L; H remains open to the at-
mosphere.
Two Negative Samples: Connect higher
negative sample to L; lower sample to H.
Model
RSS–498–13
Cleveland Controls
Division of UniControl Inc.