Installation Guide

CUT HERE
BOTTOM
TOP
Screw holes (4 places)
OPENING FOR THE HUMIDIFIER - TEMPLATE # 1
23/32"
(18.2 mm)
23/32"
(18.2 mm)
9-11/16" (246 mm)
8-1/4" (210 mm)
9-1/4" (235 mm)
6-15/16" (176 mm)
1-5/32"
(29.4 mm)
1-5/32"
(29.4 mm)
Drill 8 holes - Drill 3/32"
This line must be level
Corner holes (4 places)
Humidifier 12 HF
Please read the instructions carefully
before starting the installation.
WARNINGS and DISCLAIMER
This humidifier is a flow through model, it MUST be connected to a drain.
Installation precautions 1- This humidifier will be connected to and used under water pressure and it must be installed in such a way that if a leak occurs, the water could not cause any damage to the property. Make sure all water connections are properly installed or water spill could occur. 2- This humidifier is intended for use on forced warm air circulation furnaces, as well as multi-fuel furnaces where temperature does not exceed 180°F (82ºC). Higher temperatures will damage your humidifier and possibly cause overflow condition and water damage to your home. 3- Do not install a humidifier where surrounding temperatures may be 32°F (0ºC) or colder. Freezing water will damage the humidifier and burst the supply pipe, resulting in home damage. 4- Do not install the humidifier or the bypass connection directly on the furnace housing. 5- Do not install the humidifier or the bypass connection on a plenum side where a cooling coil could restrict or inhibit the airflow through the humidifier. 6- Always check that you are not about to cut or drill into any air conditioning or electrical accessories during installation. 7- Do not install a humidifier on the supply duct where the static pressure exceeds 0.4" Water Column. 8- Do not install a humidifier if the city water pressure exceeds 90 psi, water hammer could occur. Check the local codes related to pressure reduction. 9- The installation, wiring and plumbing of the humidifier must comply with national and local electrical, plumbing and building codes. 10- Electrical wiring, water supply & drain tube must not come into contact with sharp edges or hot surfaces. Please make certain the drain tube has no bends, its end placed in a floor drain and there is no resistance to the flow of the discharged water. 11- Do not set the humidity lever higher than normally recommended, or condensation damage could occur. Safety warnings 1- Please beware of sharp edges when you cut into a metal duct. 2- Always shut the power off before starting the installation. An electric shock from 120 volts could cause injury. 3- Hot water temperature higher than 125°F (52ºC) could cause serious burns. Please shut off the main water supply valve before connecting the humidifier water supply.
The 12 HF model can be installed on either the supply or return plenum
of a forced air heating system. It is easily reversible for right or left hand.
The total dimensions are: 15" x 15" x 9".
The opening in the duct is 9-1/4" x 8-1/4".
In selecting the best location for the unit, please take both dimensions
and serviceability in consideration.
If the furnace is equipped with a central cooling system, the damper
of the unit should be closed during the cooling season.
Electronically Controlled
Pulsed Flow Humidifier
TEMPLATE # 3
for electronic controller
Humidistat Template Included
with Humidistat package
Transformer
(HEC025)
DIP Switches
24VAC
VALVE
HSA 055
Electronic Controller
(HSA 055)
Humidistat
(DS00284
Valve (HSA 215)