Herrmidifier Herrmidicool - Manual (Page 12)

Herrmidicool IOS Manual
I n s t a l l a t i o n , O p e r a t i o n & S e r v i c e M a n u a l
12 www.herrmidifier-hvac.com
ATOMIZING HEAD ADJUSTMENT
The atomizing heads are factory adjusted and tested. Typically,
no adjustment is required unless the atomizing heads have
been disassembled for maintenance. Do not adjust individual
atomizing heads to reduce capacity or enhance performance.
This is done only by changing the operating pressures for the
entire system.
1. Turn the Herrmidicool System “On” to full output and
check that the air and water pressures are correct.
2. Remove the cap from the back of the atomizing head.
3. Using a screwdriver, slowly turn the spring tension nut
clockwise until the atomizing heads stops spraying.
4. Note the position of the spring tension nut.
5. Back the spring tension nut out two full turns
counterclockwise.
6. If head is not spraying at start of procedure, back out
spring tension nut until head starts to spray and then
begin step 3.
Warning
Absolutely no other components may be mounted inside
or electrically tapped into the humidifier without voiding
the warranty.
AH-1200 SERIES
Troubleshooting with Fault Indication
The following alarm conditions are built into the system.
A. Airflow/High Limit – The microprocessor has detected a
problem with the On/Off air proving circuit connected to
terminals #5 and 15 on terminal strip #1. Check for 20
VDC on terminal strip #5 to ground and #15 to ground.
If air proving switch is closed, you will have 20 VDC
at both terminals. If you have 20 VDC at one of these
terminals, then there is a problem with the air proving
circuit. Investigate and correct problem. If you have this
fault indicated and the voltage check is correct, consult
factory.
B. High Humidity Alarm – Humidity in the space or return
air duct being measured by the control sensor has
exceeded the preset alarm limit. This alarm is only
available on P + I Control Units (Mode 3 – Standard
configuration for AH-1200 Units).
Possible causes of this alarm:
1. Tampering with the control humidity setpoint
2. Alarm setpoint too close to control setpoint
3. Humidifier is powered but not operating and RH
is above setpoint. If system design required this to
happen, you may:
a. Reset your alarm setpoint
b. Turn off humidifier at main disconnect until
humidification season returns.
4. Sensor wiring has failed.
C. Low Humidity Alarm – Humidity in the space or return air
duct being measured by the control sensor has dropped
below the preset alarm level. This alarm is only available
on P + I Control Units (Mode 3 – Standard configuration
for AH-1200 Units).
Possible causes of this alarm:
1. Air handling system limiting output of humidifier as
controlled by limits due to psychrometric conditions.
2. Alarm setpoint too close to control setpoint
3. Humidifier is powered but not operating and RH is
below setpoint. You may:
a. Turn the humidifier “On” to satisfy
b. Adjust the low humidity alarm setpoint.
4. Sensor wiring has failed.
D. Humidity Sensor Failed – This alarm is only available on
P + I Control Units (Mode 3 – Standard configuration for AH-
1200 Units). The sensor has registered a humidity reading
of 100% or more, or 4% or less for more than 5 seconds.
System will operate based on the other sensor until corrective
action is taken. If both sensors fail, the system will shutdown.
Possible causes of this alarm:
1. Failed humidity sensor or wiring.
2. Position of humidity sensor is too close to atomized
spray discharge.