Nortec RH2+ - Manual (Page 29)

Start Up | 26
Start Up Procedure
1 Examine the humidifier and installation for damage and/or improper installation.
2 Ensure the cylinder is properly seated in the drain valve and that the electrode plugs are
pushed all the way down on the cylinder pins.
3 Ensure that the front cover is in place and secured with its retaining screws.
4 Open the supply water shut off valve.
5 Turn on the main power using the installed disconnect.
6 Turn the On/Off switch on the front of the humidifier to On.
The humidifier will perform a self-diagnostic sequence during which the LED’s and internal
components will be momentarily activated. See Figure 27 on page 32 for an explanation of
LED colors and sequences.
If an error is detected during the self-diagnostic sequence the humidifier will not start. The
yellow status LED will flash in sequence to indicate the detected fault. See section RH2
Faults on page 51 for information on diagnosing and correcting faults.
After the system test the humidifier is in normal operation mode.
7 Check and adjust the control setpoint on the control and high limit humidistat.
8 When the external humidistat generates a demand for humidity and the security loop is
closed the green humidifying LED on the front of the humidifier will light up, the power relay
on the control board will engage, the fill valve will activate (after a delay) and the cylinder will
slowly fill with water.
9 If the fan enable relay is used, the green LED will continue to flash until the air proving
closes. Once the air closes, the flashing green LED will become solid and the humidifier will
start steam production as described in step 8.
10 It can take 5 – 10 minutes for the water to be heated up by the submerged electrodes and
for steam to be produced.
Note: If operated on low conductivity water it may take several hours for the RH2 to reach
full output capacity. This is normal. During this time the humidifier will not perform any
drains and the conductivity of the water in the cylinder will increase.
Warning: Damaged Units or improperly installed units must not be operated. Damaged or
improperly installed units may present a danger to persons and property.
Note: While the cylinder is filling with water there should be no water flowing down the
drain. If water is flowing down the drain it can indicate excessive backpressure or a
leaking drain valve. See chapter on Troubleshooting.