2
MU2C-0034SZ20 R0604
INSTALLATION
CAUTION
Installer must be a trained, experienced serviceman.
Disconnect power supply before beginning installation.
Perform all required checkout tests after installation is
complete.
Connection
The bleed fitting is tapped
1
/
8
” ISO 7/1 female.
In differential pressure control applications, the lower pressure
should be connected to the vent fitting. (fig. 1.)
In applications using combustible gases, the vent tapping
should be connected to the combustion chamber.
Mounting
The C6045 has an hexagonal fitting tapped
1
/
4
”ISO7/1
female, which is the high pressure connection in differential
applications.
The C6045 can be mounted up to 90
E
from the horizontal
position.
CAUTION
For types with ranges 0.2 ... 3 mbar and range 1 ... 10
mbar the full range can only be used when mounted
within 20
E
from the horizontal position.
For all other positions the types with scale range
0.2 ... 3 mbar version may not be adjusted lower than
0.6 mbar and the types with scale range 1 ... 10 mbar
may not be adjusted lower than 1.2 mbar.
Wiring
All wiring must comply with applicable national requirements.
For wiring purposes a Pg 13.5 conduit connector is provided.
An earth screw is located inside the cover.
SETTING AND ADJUSTMENT
Pressure set point adjustment
Remove the cover and turn the pressure adjustment screw
toward ”+” to increase pressure setting and toward ”--” to
decrease pressure setting.
OPERATION AND CHECKOUT
Operation
The C6045 is equiped with SPDT switching. Therefore when
a control action occurs an annunciating action such as
energizing an alarm can simultaneous be performed.
The C6045 automatic recycle type may be used for either
High limit or Low limit applications.
IMPORTANT
Systems vary, so carefully study each application.
The following outline is a guide for a typical low limit
flame safe guard application using a manual reset
switch.
Start up
• Set cut off pressure on numerical scale indicator by
adjusting the screw. (see fig. 2.)
• Open main gas supply line. Actuate manual reset lever
until switch remakes contact (common to normally open).
• Set the controller and limit switch to call for heat. A normal
start up should occur.
• Allow system to operate through one complete cycle to
ensure that all components function correctly.
Checking cut off pressure
• Slowly close manual main valve with the burner in
operation. Shut down should occur when the pressure
drops to set point and the alarm should energize
(if connected).
• Re open the manual main valve. Pressure should rise and
exceed the set point value, the burner system should
start up and the alarm turn off when the reset button is
depressed.
NOTE: For more accurate setting use pressure tapping with
manometer.
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