Installation, Operating & Maintenance Manual
15
10/25/2004
Parameter A0 must be set to 2 if no high limit sensor, 3 if a high limit sensor is used.
Parameter A2 must be set per the OUT signal from the sensor:
• voltage: 0 to 1 Vdc; 0 to 10 Vdc; 2 to 10 Vdc;
• current: 0 to 20 mA; 4 to 20 mA.
Terminal 4I (+(G)) = 12 Vdc
Terminals 2I & 6I (M) = common
ASWH Wall Humidity Sensors/ Humidistat
Model
Description
Humidity:
Thin film capacitor
Linear 0-1 Vdc or 4-20 mAdc from 10 to 90%RH
Accuracy: +- 3%RH from 20 to 90%RH
calibrated at 55%RH and 25°C (77°F)
+- 5%RH above 90%RH and below 20%RH
Response time:
60 seconds
Power:
12 to 24 Vac/dc or +12 to –12 Vdc
Housing:
Wall: ABS with glassfiber fill
Humidity (0-1 VDC or 4-20 mADC)
ASWH100000
Wall Humidity sensor (replaces SHWOOP)
Start-Up
IMPORTANT WARNINGS:
1.
Before starting, check
that the humidifier is in perfect
condition, that there are
no water leaks and that the electrical
parts are dry;
2.
Do not connect power if
the humidifier is damaged or even
partially wet!
When installation is
completed, flush the supply pipe for
around 30 minutes by piping
water directly into the drain, without
sending it into the humidifier;
this will eliminate any scale or residues that
may cause foam when boiling.
Startup Checklist
Before starting the humidifier, the following should be checked:
_____ Water is connected, the line has been flushed, and external valves are open.
_____ Drain is connected, run to an open drain, and has a trap under the unit.
_____ Electricity is connected in accordance with instructions, local codes and data labels in the unit.
_____ The power fuses are installed and intact.
_____ All control wiring is done and tested.
_____ Airflow switch is wired to open on air flow loss.
_____ Unit wires have been checked to make sure they and all connectors are tight from shipping.
_____ The steam hose(s) are tight with no sags or kinks and sloped properly according to the manual.
_____ Condensate hoses are run correctly with no sags or kinks and sloped properly according to the manual.
