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CRUV INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Start-up checklist:
TAP/SOFTENED WATER
☐
Adjust humidistat setting to create a call for humidity.
☐
Open shut-off valve on water supply line, and confi rm that drain valve is
closed. Tank should begin fi lling with water through fi ll valve.
☐
Shortly before fi ll valve shuts off, rising water level causes water to come
in contact with the bottom probe, and heating element contactor(s) will be
actuated.
☐
Check heater cut-off circuit as follows:
1.
Close manual water supply valve, then open drain valve and start
draining tank.
2.
When water level drops below bottom probe, the heating element
contactor(s) drop out.
3. When Step 2 above has completed, close drain valve.
☐
Check function of fi eld-installed safety controls, such as fan proving switch.
Contactor(s) should drop out when proving switch is open.
☐
Check heater draw by testing and recording voltage and amperage in each
phase. Readings should match humidifi er name plate readings (name plate
is on humidifi er housing).
☐
Inspect installation for steam or air leaks while operating humidifi er. Seal
any leaks.
RO/DI WATER OPTION
☐
Adjust humidistat setting to create a call for humidity.
☐
Open shut-off valve on water supply line, and confi rm that drain valve is
closed. Tank should begin fi lling with water through fi ll valve.
☐
Shortly before fi ll valve shuts off, fl oat-operated heater cut-off switch will
“make,” and heating element contactor(s) will be actuated. A time delay
relay circuit prevents contactor chatter that would otherwise occur due to
bouncing of heater cut-off fl oat.
☐
Check heater cut-off circuit as follows:
1.
Close manual water supply valve, then open drain valve and start
draining tank.
2.
When water level drops past switching level on heater cut-off fl oat, the
heating element contactor(s) drop out.
3. When Step 2 above has completed, close drain valve.
☐
Check function of fi eld-installed safety controls, such as fan proving switch.
Contactor(s) should drop out when proving switch is open.
☐
Check heater draw by testing and recording voltage and amperage in each
phase. Readings should match humidifi er name plate readings (name plate
is on humidifi er housing).
☐
Inspect installation for steam or air leaks while operating humidifi er. Seal
any leaks.
OPERATION
LW series controller
