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HighPressure Humidifier - Constant Pressure
N°
Name
3
ALARM
4
ALARM
5
REQ
6
REQ
7
0 V
8
REG
9
V+
10
RTH
11
ACOUT
All connections between the controller and the solenoid card are made at the factory. The user must
connect the output signal of the humidistat to the terminals 7 (-) and 8 (+) taking care of polarities.
For ON/OFF driving connect the wires to terminals 8 and 9.
The HPNCTRL card proportional or ON/OFF control signal must be shut off in case of ventilation failure or
AHU shutdown to stop mist entering into the AHU without airflow.
7.7 Setting of the bypass control valve
The high-pressure system has a bypass valve for regulating the output pressure. At first power on is
necessary to control the adjustment of this valve.
In the case of a successful installation, you can adjust the maximum pressure (turning clockwise the
valve). It is advisable to adjust the output pressure up to a pressure of about 80 bar.
It's also possible to reduce the output pressure in case "Etb" message is displayed on the inverter display
(lower limit for output pressure is 30bar).
8 Maintenance
A high pressure humidification system requires some periodic maintenance operations for its proper
operation:
•
Change the oil pump every 500 hours, as indicated on the attached manual pump, closing
the inlet water and removing the top caps and bottom as shown in figure
•
Periodically check the wear of the nozzles. The nozzles worn may cause the blocking of the
machine due to an excessive reduction of output pressure
•
Check periodically pump oil level:
Elsteam S.r.l - via E.fermi, 496 - 21042 Caronno Pertusella (va) - Tel.+39 02 9659890 - Fax +39 02 96457007
Alarm
Normally opened contact. (Max. 2A, 230V).
NOT USED
Ground reference voltage (0V)
Input Control Signal (0-10V)
Positive Reference Voltage (12V)
NOT USED
NOT USED
E-mail: info@elsteam.it - Web: http://www.elsteam.com
21.1.EN
Description
11
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