Anden AS35 Series Operating and maintenance instructions

WARNING
ELECTRIC SHOCK HAZARD. Disconnect main electrical
power to the humidier at the circuit breaker and drain the
water from unit before servicing. Hot surface inside.
NOTICE
• Service should be performed by an HVAC technician.
• Use only genuine replacement parts.
INSPECT HUMIDIFIER WHEN SERVICING
• Replace canister and O-ring annually or when “Service” light
turns on
• Clean drain valve and ll valve screen annually
• Replace electrode wires every 3 years or as needed (see step
3 of CANISTER REPLACEMENT AND DRAIN VALVE SERVICE)
SERVICE SHUTDOWN PROCEDURE
1. Press On/Off button to turn humidier off (see FIGURE 1).
2. Allow humidier to drain.
3. When the green Drain light (see FIGURE 1) stops ashing,
disconnect main electrical power to humidier at the circuit
breaker.
4. Allow the unit to cool.
5. Shut off water supply to unit.
CANISTER REPLACEMENT AND DRAIN VALVE SERVICE
1. Remove front panel (see FIGURE 1).
2. Pull three wires off posts on top of canister (two electrode
wires and one water level probe wire, shown in FIGURE 2).
3. Inspect the two electrode wires (see ELECTRODE WIRE
REPLACEMENT section for detailed instructions).
Replace them if they are:
• Not tightly tting
• Damaged
• Over 3 years old or age is unknown
• Have D shaped connectors (see FIGURE 3A)
J8 J10
CANISTER ELECT RODES
WATER LEVEL
PROBE
ELECTRODE
POST
90-2352
90-2736
FIGURE 3A –
“D” SHAPED CONNECTOR
FIGURE 3B –
“O” SHAPED CONNECTOR
FIGURE 2 – ELECTRODE LOCATION
MAINTENANCE INSTRUCTIONS
Series AS35
Steam Humidier
FIGURE 1 – STEAM HUMIDIFIER
1On/Off button
and light
2Drain light
3Front panel
4Side panel
5Service light
3
4
1
2
5

4. Loosen hose clamp at top of canister. Slide steam hose off
top of canister (see FIGURE 4).
5. Slide canister up and out of drain assembly (see FIGURE 4).
Discard old canister.
6. Remove O-ring from drain assembly using small screwdriver.
Discard old O-ring.
7. With your nger, swirl the uid/precipitate mixture in the
bottom of the drain valve reservoir (see FIGURE 4).
8. Using a sponge or paper towels, soak up the water in the
reservoir. If necessary, use a wet/dry vacuum to remove
residue.
9. Clean the inside of the drain port (where coil projects out)
by gently swabbing with a bent cotton swab or other soft
implement.
10. Rinse the drain valve reservoir with clean water and
vacuum as necessary.
11. Insert new O-ring (Part #5258) into slot in drain assembly.
Dampen O-ring with water before inserting canister. Do not
use oil, grease, or any lubricant besides water.
12. Make sure strainer is inserted into bottom of new canister.
13. Insert new canister into drain assembly (see FIGURE 4).
14. Slip steam hose over top of canister and tighten hose lamp
(see FIGURE 4).
15. Reconnect the electrode wires and water level probe wire
to the posts on top of the canister (see FIGURE 2). Electrode
wires are interchangeable and can be placed on either
of the two electrode posts on top of the canister. Ensure
connectors are fully seated.
ELECTRODE WIRE REPLACEMENT
1. Remove front panel (see FIGURE 1).
2. Remove side panel (see FIGURE 1).
3. Remove the electrode wires (see FIGURE 2). Use needle nose
pliers to pull the spade connectors off spade terminals J8
and J10 on the circuit board.
4. Ensure the two replacement electrode wires (Part #4978)
have “O” shape connectors (see FIGURE 3B). Do not use
replacement wires with “D” shape connectors (see
FIGURE 3A).
5. Attach the new electrode wires (see FIGURE 2). Use a pair of
needle nose pliers to attach the spade connectors to the
spade terminals J8 and J10 on the circuit board. Electrode
wires are interchangeable and can be placed on either of
the two terminals.
FILL VALVE SERVICE
1. Disconnect water supply line from ll valve inlet (see
FIGURE 4).
2. Remove in-line strainer from the ll valve inlet port using a
#8 or #10 sheet metal or wood screw with a minimum length
of 0.5”.
3. Clean or replace in-line strainer (Part #4004).
4. Reconnect water supply line to ll valve inlet (see FIGURE 4).
RESTORE UNIT TO SERVICE
1. Replace side panel if removed (see FIGURE 1).
2. Replace front panel (see FIGURE 1).
3. Inspect drain hose to make sure it is not blocked and has
constant downward slope. Clean or replace if necessary.
4. Inspect and clean condensate pump (if used).
5. Inspect steam hose to make sure it has no low spots and
has constant upward slope from humidier to dispersion
tube in duct. If dispersion tube is mounted below humidier,
inspect drip tee and drain trap.
6. Restore main electrical power to humidier at circuit breaker.
7. Turn humidier on and verify green On/Off light is illuminated
(see FIGURE 1).
8. Check system operation and inspect all plumbing
connections and piping for signs of cracks or leaks.
STEAM
OUTLET
DRAIN
SUPPLY
WATER
DRAIN CUP
DRAIN VALVE
DRAIN ASSEMBLY
ELECTRODES
WATER LEVEL PROBE
FILL
VALVE
OVERFLOW
FILL
STEAM HOSE DISPERSION
TUBE IN DUCT
TUBELETS
CANISTER
90-1522
FIGURE 4 – FILL & DRAIN SYSTEM AND CANISTER
B2210101A • 10016613 • 10.22
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