Honeywell Fema HCD6010 Installationsanweisung Seite 2

HCD – INSTALLATION INSTRUCTIONS
CAUTION
For models with a range of 0.2 ... 3 mbar or a range of
1 ... 10 mbar, the full range can be used only when the
pressure switch is mounted within 20° 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 Setpoint Adjustment
Remove the cover and turn the pressure adjustment screw
toward "+" to increase pressure setting and toward "-" to
decrease pressure setting.
OPERATION AND CHECK-OUT
Operation
The HCD is equipped with SPDT switching. When a control
action occurs, an annunciating action such as energizing an
alarm can thus be simultaneously performed.
The HCD automatic recycle type may be used for either high-
limit or low-limit applications.
IMPORTANT
Systems vary, so study each application carefully. The
following outline is a guide for a typical low-limit flame
safeguard application using a manual reset switch.
Start-Up
Set cut-off pressure on numerical scale indicator by adjusting
the pressure adjustment screw (see also 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 the system to operate through one complete cycle to
ensure that all components function correctly.
Checking Cut-Off Pressure
With the burner in operation, slowly close manual main valve.
Shut-down should occur when the pressure drops to the
setpoint, and the alarm should energize (if connected).
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its authorized representative:
Fema Controls
Honeywell GmbH
P.O. Box 1254
71099 Schönaich / Germany
phone: (49) 7031-637-02
fax: (49) 7031-637-850
http:/honeywell.de/fema
Subject to change without notice. Printed in Germany
MU1B-0573GE51 R0714A
Re-open the manual main valve. When the reset button is
depressed, the pressure should rise and exceed the setpoint
value, the burner system should start up, and the alarm
should turn off.
NOTE: For more accurate setting, use pressure tapping
with manometer.
90
49 20
POSITIVE-PRESSURE
CONNECTION /
HIGH-PRESSURE INLET
23
37
40
38
HIGH-PRESSURE TAPPING /
TEST PRESSURE INLET
VENTING OR DIFF. CONNECTION /
LOW-PRESSURE INLET
Fig. 1. Dimensions (mm)
PRESSURE
ADJUSTMENT SCREW
SETPOINT
INDICATOR
SWITCH POSITION
INDICATOR
VENTING OR DIFF. CONNECTION /
LOW-PRESSURE INLET
HIGH-PRESSURE TAPPING /
TEST PRESSURE INLET
Fig. 2. Cross-section
MOUNTING HOLES
FOR BRACKET
140
96
Pg 13.5
32
CONDUIT
120
COVER
SCREW
PRESSURE
ADJUSTMENT
71
SCREW
SPDT MICROSWITCH
(SWITCH POSITION
AT ATMOSPHERIC
PRESSURE)
DIAPHRAGM
LEAK-LIMITING ORIFICE
POSITIVE-PRESSURE CONNECTION /
HIGH-PRESSURE INLET