Specifications; Ordering Information - Honeywell C645A-E Product Data

C645A-E PRESSURE SWITCHES

SPECIFICATIONS

Models:
C645A,C,D Pressure Switches—break a circuit when
pressure falls to scale setting minus the differential.
Refer to Table 1.
Scale Scale
Range Range
Models (in. wc) (kPa)
C645A 3 to 21 0.7 to
5.2
5 to 35 1.2 to
8.7
C645B 3 to 21 0.7 to
5.2
5 to 35 1.2 to
8.7
C645C 0.6 to 0.1 to
5.3 1.3
d
2 to 20 0.5 to 5
C645D 3 to 21 0.7 to
5.2
C645E 3 to 21 0.7 to
5.2
a
Locks out when pressure falls to setpoint minus differential; can be reset manually after pressure rises to setpoint.
b
Locks out when pressure rises to setpoint; can be manually reset after pressure falls to setpoint minus differential.
c
Without indicator on Auto Recycle; with indicator on Lockout model.
d
With surge orifice.
Switch Ratings (Amperes):
Model
C645A Full Load
C645B Locked Rotor
C645D
C645C Full Load
Locked Rotor
C645E Full Load
Locked Rotor
All models also rated 2A at 30 Vac.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or your distributor, refer to the
TRADELINE® catalog or price sheets for complete ordering number, or specify—
1. Order number.
2. Air or gas control on C645A,B models.
If you have additional questions, need further information, or would like to comment on our products or services please write or phone:
1. Your local Honeywell Home and Building Control Sales Office (check white pages of your phone directory).
2. Honeywell Home and Building Control Customer Relations
Honeywell, 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9. International sales and
service offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico,
Netherlands, Spain, Taiwan, United Kingdom, U.S.A.
60-2159—8
Table 1. Pressure switch model selection.
Natural
Switching
or LP
Gas Air Action
Yes Yes Auto Recycle
a
or Lockout
Yes Yes
b
Yes Yes Lockout
Yes Yes
No Yes Auto Recycle
a
or Lockout
No Yes Auto Recycle No
No Yes Auto Recycle No
No Yes Auto Recycle No
120 Vac 240 Vac
7.4 3.7
44.4 22.2
8.0 5.1
48.0 30.6
7.4 3.7
44.4 22.2
C645B Pressure Switches—break a circuit when pressure
rises to scale setting. Refer to Table 1.
C645E—breaks circuit when pressure falls to scale setting
minus the differential. Refer to Table 1.
Differential Differential
Range
Switch
(in. wc)
Position
Indicator
Nom. Max. Nom.
Optional 1 3 0.2
c
1 4 0.2
Yes 1 3 0.2
Yes 1 4 0.2
Optional 0.2 0.8 0.05
1 3 0.2
1 3 0.2
1 3 0.2
Alternate Electrical Ratings when used with Honeywell
Flame Safeguard Programmers (all C645 models):
Ignition
Transformer
Pilot Valve
Main Valve
3. Optional specifications.
4. Accessories, if desired.
2
Maximum Maximum
Range
Surge Surge
(kPa)
Pressure Pressure
(psi) (kPa)
Max.
0.7 5 34.5
1.0 5 34.5
0.7 5 34.5
1.0 5 34.5
0.02 1.5 10.3
0.7 5 34.5
0.7 5 34.5
0.7 5 34.5
540 VA
50
250 VA with 10 times inrush.
400 VA with 2-1/2 times inrush.
Cover
Window
Optional
Yes
Optional
Yes
No
No
No
No