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Model 1042LH Humidifier Installation Manual
Maintenance
Your humidifier is engineered to give helpful and trouble-free humidification. For maximum efficiency the following
cleaning procedures should be carried out at the end of each heating season:
1. Turn off the water supply and electrical power to the humidifier.
2. Remove water distributor tube, distributor trough, used Vapor Pad
removed from either the top or bottom of the humidifier. Clean excessive mineral deposits from the distributor
trough, drain pan and humidifier cabinet. A solution of 1/2 vinegar & 1/2 water will help loosen mineral deposits.
3. Insert a new 990-13 (GFI #7002) Vapor Pad
distributor tube to proper position over the distributor trough. Replace Vapor Pad
4. In heavy mineral areas, or if the solenoid valve fails to function, disconnect the 1/4" water supply line from the
solenoid valve. Remove the brass strainer body from the solenoid valve. Carefully pull the strainer screen 990-17
(GFI #7005) from the orifice fitting. Clean the mineral deposits from all parts. If the orifice is clogged, it may be
opened by inserting a small needle. Reinsert the filter into the orifice fitting and screw the brass strainer body into
the solenoid valve.
5. Reconnect the 1/4" water line to the solenoid valve if necessary. Turn on the water supply and check all points for
leakage. The operation of the unit may be checked by starting the furnace. The humidifier operates only when the
furnace blower is running or the burner circuit is energized. The humidifier is now ready for operation.
6. During the summer, turn OFF the water supply and electrical power to the humidifier. Close the air damper.
Parts Drawing
1137-4 DISTRIBUTOR TROUGH
1042-5 DISTRIBUTOR TUBE
P-104 COMPRESSION SLEEVE
SOLENOID VALVE ASSEMBLY
990-37-76 ORIFICE & STRAINER ASSEMBLY
990-16-76 ORIFICE FITTING
8
Breathe Healthier!
Residential Whole-House Indoor Air Quality
1099-9 THUMB NUT
1137-35 TROUGH COVER
990-13 EVAPORATOR PAD
CABINET ASSEMBLY
1042-16 (24 V.)
P-103 COMPRESSION NUT
P-111 CONNECTOR
990-53 (24 V.)
990-17 STRAINER SCREEN
990-18 STRAINER BODY
1137-3 DRAIN PAN
P-163 HOSE CLAMP
1099-16 DRAIN TUBE
and drain pan. The Vapor Pad
®
(black notch on top). Install trough and drain pan. Replace the
®
may be
®
yearly for peak performance.
®
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