HygroMatik SteamKit H, Manual

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7.2 Safety interlock
The descriptions following hereafter relate to
the usage of a kit in combination
with a
HygroMatik control. If the kit is used with-
out a control „Basic“ or „Standard“, it is the
responsibility of the kit operator to implement
a safety (interlock) system.
Risk of electrical shock!
Hazardous electrical voltage!
When standard wiring was made, terminal 1
shows 208 - 240 VAC after commisioning.
Across terminal 1 and 2 the so-called safety
interlock is wired. This wiring allows for inte-
gration of safety devices. In case of an open
safety interlock the steam humidifier does not
operate.
Factory setting leaves the safety interlock
open!
Install contact interlocks, e.g. a max. hygro-
stat in series across terminal 1 and 2.
Contacts across terminals 1 and 2 must be
potential free and rated for 240 VAC.
Best practice implies the integration of a max.
hygrostat in the safety interlock wiring to pro-
tect against over-humidification due to a r.h.
sensor malfunction.
7.3 Internal electrical connection
7.3.1 Overview
The customer is generally responsible for the
electrical wiring of the kit. Three variants of
setting-up a control are possible:
SteamKit H kit w/o HygroMatik control
Without a control logic, operation of the
steam humidifier kit is possible by means of a
simple control circuit. Section 7.4.1 depicts
proposals for the wiring of such a circuit.
When unit enabling is present (e.g. via the
S1b switch in combination with the simple
control), the control of the steam production
is achived in a 1-step mode by the water level
in the steam cylinder as signalled by the float
switch. The float switch is part of the control
cylinder included in the kit delivery scope.
SteamKit H kit in combination with the Hygro-
Matik Control Standard
The control „Standard“ operates with all of
the common control signals. It controls the
steam production as well as the filling and
blow-down processes. Continous water level
control is through evaluation of the water
level sensor that is included in the control
„Standard“ delivery scope as part of the con-
trol cylinder.
The control logic also comprises the error
detection for the various functional areas.
WARNING
!
Safety interlock terminals 1/2
Please note
Please note