8
This is Munters recommendation of controlling the units in step control mode.
Programming off BMS/control system
Item
Mode
BV drain
SV supply**
Pump step 1
SV step 2
SV step 3
SV step n
Off
open
0
0
0
0
0
Ready
closed
1
0
0
0
0
Step 1*
closed
1
1
0
0
0
Step 2
closed
1
1
1
0
0
Step 3
closed
1
1
1
1
0
Step n
closed
1
1
1
1
1
SV
Solenoid valve for water-supply / step control 2 / step control 3 …
BV
Motorized ball-valve for drain (230 V, 1-phase, 4 wire)
Pump
Circulation pump (400 V, 50 Hz, 3-phase)
* Allow 5 min delay for complete filling of the tray.
** For direct water SV supply is Step 1.
There should be a time delay off 15 min in the control mode off each step.
Step 1 pump starts.
Step 2 solenoid valve no: 1 opens (must be open min 15 min before second solenoid valve opens).
Step 3 solenoid valve no: 2 opens (must be open min 15 min before third solenoid valve opens).
The time delay off 15 min is also applicable when closing solenoid valves/steps.
Safety responsibility
Each person who works with, or operates, a humidifier is
primarily responsible for:
• Personal safety, the safety of others, and the prevention of
damage to the humidifier
• The humidifier being operated correctly
• Electrical wiring must be done according to national stan-
dards by qualified personnel.
These instructions explain how the humidifier is to be used.
These instructions are only recommendations and are not a
substitute for the responsibility stated above.
Improper use of equipment
If the humidifier is used improperly, personal injury or
damage to the product may occur.
The humidifier may not be placed in operation before the
product, or the system of which the humidifier is a part has
been declared to agree with the specifications of the ma-
chinery directive and its supplements.
The pump motor must be provided with a trip switch so that
the power can be cut off during service and maintenance
work. The trip switch shall be mounted on the humidifier.
All electrical cabling must be secured in a safe way to avoid
damages during normal operation or service or prevent the
removal of cassettes.
FA6 unit with all electric components must be included
in AHU emergency stop function.
The pump motor is to be protected by a motor protection
device.
Warning:
The humidifier may not be connected to any
voltage or frequency other than that shown on the rating
plate.
Note:
Do not step on unit or drain/water pipes.
Disposal of used humidifier cassettes
The material used in cassettes is not combustible. Used cas-
settes should therefore be treated in the same way as other
incombustible materials such as plasterboard or bricks.
The material is to be disposed of at sites approved by the
authorities.
