Reznor LCSBD-4, Инструкция по установке, пусконаладке, обслуживанию и эксплуатации

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maximum adjustment screw and hold it
on.

If maximum pressure setting needs
adjustment turn the maximum rate
adjustment screw clockwise for
increasing or counter-clockwise for
decreasing the maximum pressure, until
the desired maximum outlet pressure is
obtained. Release shaft.

Mount cap and “O”-ring and reconnect
pressure feedback connection (if
applicable).
When maximum and minimum pressure are
set, wire Modureg in circuit.
IMPORTANT
Adjustments should be made by qualified
persons only.
The interface board is a signal conditioner
designed for the use in association a
Honeywell modulation coil V7335A
(Modureg). The purpose is to provide a
linear conversion of a low DC voltage or
current (produced by measure or control
equipment) to a requested control current or
voltage for the modulation coil (0-22 V-DC
or 30-165 mA-DC).
Characteristics
Input signal
The interface board requires to be powered
by a 230 VAC supply voltage.
Following control signals are available:

4 - 20 mA-DC with input protection for
a continuous 200 mA signal (terminals
64-63).

0 - 5 V-DC with input protection for a
continuous 35 V-DC signal signal
(terminals 64-64).

0 - 10 V-DC with input protection for a
continuous 35 V-DC signal (terminals
64-66).
Remark : Please ensure that the polarisation
'+' and '-' of the control signal is done
correctly, otherwise the PCB will in case of a
0-5 V DC control signal not modulate and
will even in case of a 0-10 V DC control
signal refuse to operate.
Output signal.
The required output signal can be obtained
by adjusting the selector switches on the
printed circuit board.

For output control signal of one
modulation coil V733SA (165mA)
Switch 1: "OFF"
Switch 2: "OFF"
OPERATION
Adjustment & Control signals.
General
A relay with potential free contacts
(terminals 5 & 6) incorporated within the
interface board, controls the burner relay in
the heater. This relay (burner on relay) is
triggered each time there is an increase of
the control current or voltage (room
thermostat function).
Adjustment of the minimum drop-out
voltage of burner relay. Potentiometer
P2.
The minimum drop-out voltage is controlled
by a potentiometer P2, varying between 0 %
and 40 % of the input control signal.
Example

an input control signal of 0 to 10V DC
and potentiometer P2 set at 0 %
results into a drop-out voltage of 0.3V
DC.

an input control signal of 0 to 10V DC
and potentiometer P2 set at 40 %
results into a drop-out voltage of 4V
DC.
Adjustment of the maximum hold-in
voltage of burner relay. Potentiometer
P3.
The maximum hold-in voltage is controlled
by a potentiometer P3. Its proportional value
is added to the P2 setting value.
Adjustment of modulation
Interface board