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2.
Verify main power is locked-out - tagged out.
3.
Determine method of fan motor control: If fan motor control
signal is 0-10 VDC or 4-20 mA, go to Start-Up, Step 5. Else,
continue.
4.
Fan motor control is MODBUS or BACnet; go to Start-Up,
Step 6.
0-10 VDC OR 4-20 MA FAN MOTOR CONTROL
1.
Connect fan motor control wiring to the following control ter-
minals in the ECMFPB:
2.
Connect control ground wire to control terminal #2 which is
connected to motor control ground terminal.
3.
Connect 0-10 VDC or 4-20 mA control wire to control termi-
nal #1 which is connected to motor control Ain1U terminal.
If fan motor control is 4-20 mA, the plastic bag taped over
control terminals inside the ECMFPB contains a 500 Ohm
resistor that MUST be field installed as a jumper between
control terminals #1 and #2 as shown on the label in the bag.
CAUTION
Failure to install 500 Ohm resistor when using 4-20 mA con-
trol will result in damage to the EC Motor control board.
4.
Verify that the unit and surrounding area has been cleaned of
all foreign objects, dirt, and debris.
5.
Turn main power to the ECM Fan Power Box ON.
6.
Turn ECM Fan Power Box switch to ON.
7.
Provide appropriate fan control input signal (3 VDC / 8 mA)
to start the fans at slow speed.
8.
Verify the following:
a. All fans are rotating.
b. Direction of rotation for all fans matches the rotation
arrow on the fan mounting plate.
c. All fans operate quietly (obviously, noise is produced but
noise should be broad frequency and without any
unusual noise. Examples of unusual noises are: specific
tonal noise, screeching, rubbing, grinding, rattling, or
whistling).
d. All fans operate without noticeable vibration.
e. If fans include the backdraft damper option, verify that
all damper blades open.
f. Change fan control signal to 0 VDC / 4 mA and verify
all fans stop.
MODBUS OR BACNET FAN MOTOR CONTROL
1.
The factory programmed the fan motors with the fan sup-
plier's software and an RS485 - USB interface converter.
2.
Suitable interface converters are:
a. ebm-papst: EC-Control
interface types: RS232, Ethernet, Bluetooth and USB,
one of which must be field supplied and installed.
b. Ziehl-Abegg ZAset
face types: USB, MODBUS TCP/IP, MODBUS RTU
over TCP/IP, one of which must be field supplied and
installed.
3.
If an interface other than USB is required, a fan motor pro-
gramming change must be performed. See fan supplier's
operating manual for instructions.
a. ebm-papst: EC-Control 3.20 manual, Section 3.2.
b. Ziehl-Abegg: ZAset manual, Section 5.
1. EC-Control is a registered trademark of ebm-papst.
2. ZAset is a trademark of Ziehl-Abegg SE.
supports the following RS485
1
supports the following RS485 inter-
2
4.
Connect fan motor control wiring to the following control ter-
minals in the ECM Fan Power Box:
a. Connect wire X from RS485 to control terminal #2
which is connected to motor control ground terminal.
b. Connect wire A from RS485 to control terminal #3
which is connected to motor control RSA terminal.
c. Connect wire B from RS485 to control terminal #4
which is connected to motor control RSB terminal.
5.
All fan motors have been assigned MODBUS addresses per
the fan numbering label on the inside of the door panel on the
ECMFPB.
6.
If fan control is BACnet, then the BACnet module is pro-
vided in the lower right corner inside the ECMFPB and must
be field installed and wired.
a. Suggested mounting position is on the DIN rail above
the control terminals.
b. 24 VDC power must be provided to the module.
c. Ground connection must be provided to the module.
d. Make other connections for your specified control sys-
tem as directed in operating instructions included with
the BACnet module.
7.
Verify that the unit and surrounding area has been cleaned of
all foreign objects, dirt, and debris.
8.
Turn main power to the ECM Fan Power Box ON.
9.
Turn ECM Fan Power Box switch to ON.
10. Use fan supplier software or other MODBUS / BACnet con-
trol to increase fan control input signal to start the fans at slow
speed.
11. Verify the following:
a.
All fans are rotating.
b. Direction of rotation for all fans matches the rotation
arrow on the fan mounting plate.
c. All fans operate quietly (obviously, noise is produced but
noise should be broad frequency and without any
unusual noise. Examples of unusual noises are: specific
tonal noise, screeching, rubbing, grinding, rattling, or
whistling).
d. All fans operate without noticeable vibration.
12. Use fan supplier software or other MODBUS / BACnet con-
trol to decrease fan control input signal to stop the fans and
verify all fans stop.
HUMIDIFIER INSTALLATION CHECKLIST
1. Humidifier is properly assembled with all discharge slots
facing the proper direction. (Multipipe systems have the
vertical slots in line with the manifolds, 90 degrees to the
airflow.)
2. Humidifier headers are secured and level.
3. Humidifier upright discharge manifolds are plumb.
4. Valve and trap assembly is properly assembled and con-
nected to the humidifier header.
5. P-trap is installed on discharge of each header.
6. Steam feed line is properly run, sloped and connected to
the valve and trap assembly inlet.
7. Controls are properly wired.
HUMIDIFIER START-UP
1. Slowly open the steam isolation valve from the steam
supply line. You should be able to hear steam running
through the valve. Wait a few minutes for the steam to
heat up the entire line to the humidifier and for all con-
densate to clear through the trap.
208
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