Generalaire SL16 User Manual download pdf (Page 4)

-20 F -29 C° 15%

-10 F -23 C° 20%

0 F -18 C° 25%

+10 F -29 C

+20 F - 7 C

° 30%

° 35%

+30 F - 1 C° 40%

The operating principle of the humidifier is based on the most efficient and economical means of evaporating water to

the air. The humidifier uses only five watts of electrical power during operation, less than the smallest household light

bulb. The heat necessary for evaporating water is produced by the furnace.

The water supply to the humidifier is controlled by the electric solenoid valve. The humidistat connected in series

with the solenoid provides low voltage control of the humidifier. The humidistat has a SPST switch and is designed for

wall mounting in the living area or surface mounting on the return air duct. RANGE: 10% to 60% RH ELECTICAL

RATING: 24 VAC / 60 Hz. DO NOT SET RELATIVE HUMIDITY TOO HIGH DURING COLD WEATHER.

EXCESSIVE HUMIDITY MAY CAUSE CONDENSATION ON WINDOWS OR IN WALLS. REFER TO

RECOMMENDED SETTINGS ON HUMIDISTAT.

Water flows through a strainer, is metered through an orifice to provide the proper amount of water, and is supplied to

the evaporator pad by the distributor trough. Approximately 200 CFM of air is by-passed from the warm air plenum

through the humidifier and returned to the cold air plenum. Moisture is evaporated to the air passing through the

evaporator pad.

Minerals are not blown into the air stream as occurs in atomizing humidifiers; they are left on the evaporator pad

where a high percentage is carried off with the waste water.

When the humidifier is installed and operating, no adjustments are necessary other than setting the control knob on

the humidistat to the desired level of humidification.

To turn the humidifier off, close water supply valve, switch electrical power off and turn humidistat off. If furnace is

used for summer cooling or ventilating close inline air damper if installed..

OUTSIDE

TEMPERATURE

RECOMMENDED

SETTING

HOW THE HUMIDIFIER WORKS

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 water supply and electrical power to humidifier.

2. Open humidifier cover, remove trough and evaporator

pad. If water line prevents cover opening disconnect water

line from solenoid valve. Clean excessive mineral deposits

from the distributor trough, humidifier cover and humidifier

cabinet. A solution of 1/2 vinegar & 1/2 water will help

loosen mineral deposits.

3. If the evaporator pad has excessive mineral deposits,

replace with a new “990-13” evaporator pad. Install trough

and replace cover.

4. In heavy mineral areas or if the solenoid valve fails to

function disconnect the 1/4” water supply line from the

solenoid valve. Carefully pull the filter from the solenoid

valve. Clean the mineral deposits from all parts. If the

orificebeyond the filter is clogged, it may be opened by

inserting a small needle. Reinsert the filter into the solenoid

valve.

5. Reconnect the 1/4” water line to the solenoid valve if

necessary. Tighten nut by hand, additional tightening is not

required.

DO NOT OVERTIGHTEN NUT AS THE

THREADS WILL STRIP AND THE FITTING WILL

NOT FUNCTION PROPERLY.

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 water supply and electrical

power to humidifier. Close inline air damper if installed.

PART #16-4

DISTRIBUTOR

TROUGH

PART #990-13

EVAPORATOR

PAD

PART #16-1

HUMIDIFIER

CABINET

PART #16-5

COVER-

BYPASS

PART #16-2

COVER

PART #16-20

SOLENOID

VALVE ASS'Y

PART #16-12

STRAINER

SCREEN

PART #P-236

SOLENOID

FITTING

HARDWARE

PARTS LIST FOR HUMIDIFIER

CARE AND MAINTENANCE

PARTS NOT SHOWN:

800UST SADDLE VALVE

HUMIDISTAT ASSY.

1 2 3 4 5

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Generalaire SL16 User Manual Page 4

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