Aprilaire 400 Instructions And Installation Instructions
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Brand: Aprilaire
Category: Dehumidifier , Humidifier
Type: Instructions and installation instructions for Aprilaire 400
Pages: 2 (0.89 Mb)
Download Aprilaire 400 Instructions and installation instructions
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READ COMPLETE SAFETY INSTRUCTIONS AND INSTALLATION TEMPLATE BEFORE STARTING
Attention Installer: WARNING
This product must be installed by a qualified heating and air conditioning
contractor. Failure to do so, could result in serious injury from electrical
shock. This product must be installed in compliance with all local, state and
federal codes.
AUTOMATIC HUMIDIFIER MODEL 400
The Model 400 Aprilaire can be installed on either the supply or return plenum of a forced air handling system and is easily reversible
for installation with right hand or left hand bypass pipe connections. Read complete instructions before mounting the humidifier.
The unit is
15" x 14
3
/8" x 10". The dimensions and serviceability must be considered when selecting the best location for the unit.
WARNING
1. Disconnect electrical power to the furnace before starting
installation. Failure to do so could result in serious injury from
electrical shock.
2. Sharp edges may cause serious injury from cuts. Use care when
making plenum openings and handling ductwork.
3. Hot water temperatures in excess of 125°F. may cause serious
injury from burns. Make sure water supply is shut off before
connecting the water supply.
CAUTION
1. Do not install unit where freezing temperatures could occur.
2. Do not install unit or bypass connection on the furnace jacket.
3. Do not install unit or bypass connection on a plenum face where
the blanked off ends of the cooling coil restrict air movement
through the humidifier.
4. Do not set humidity higher than recommended. Condensation
damage may result.
5. Do not connect the transformer of the Model 400 to multi-speed
furnace blower motors or blower motors other than 120 VAC.
Premature component failure may result. Use Research Products
Corporation Model 50 Current Sensing Relay.
6. Do not set humidity up to recommended levels if there is
condensation on the inside windows of any unheated living
space. Condensation damage may result.
7. When installing Humidifier Control on downflow furnace, ensure
blower continues to run after a heat call is satisfied to eliminate
high temperatures from damaging the Humidifier Control.
8. Do not install humidifier where water pressure exceeds 125 psi,
since damage to the unit may result. Follow codes in effect
concerning pressure reduction.
NOTE: SIX (6) #8 X
3
/
4" PLATED HEX HEAD SMS SCREWS (NOT FURNISHED) ARE REQUIRED FOR INSTALLATION.
P.O. BOX 1467 • MADISON, WI 53701-1467 • Call 608/257-8801 • FAX 608/257-4357 • Products For Better Indoor Air Quality
™
NOTE
SOME FURNACES ARE EQUIPPED WITH
ACCESSORY TERMINALS THAT CAN BE USED
FOR THE HUMIDISTAT. THE RP MODEL 50 CURRENT
SENSING RELAY (NOT FURNISHED) MAY NOT BE
NECESSARY IN THIS CASE. CONSULT THE FURNACE
MANUFACTURER’S RECOMMENDATIONS FOR WIRING.
NOTE
FOR INSTALLATION IN MANUAL
MODE, REPLACE OUTDOOR
TEMPERATURE SENSOR WITH
PLASTIC RESISTOR CASE AND
ATTACH MANUAL FACE PLATE.
SEE FORM #DP10005402 FOR
COMPLETE WIRING INSTRUC-
TIONS, INCLUDED WITH EACH
HUMIDIFIER.
IMPORTANT
WHEN MODEL 50 IS USED:
• DO NOT WIRE TRANSFORMER INTO
FURNACE BLOWER CIRCUIT.
• WIRE MODEL 50 INTO “APRILAIRE
HUMIDIFIER” CIRCUIT ONLY! DO NOT
INSTALL IN TRANSFORMER CIRCUIT.
Horizontal
Downflow
Upflow
COMMUNICATION
TERMINALS
FURANCE ACCESSORY
TERMINALS
(10 VA MINIMUM)
OR
TRANSFORMER
(10 VA MINIMUM)
NORTH, EAST
OR WEST
SIDE OF
HOME
OUTDOOR
TEMPERATURE
SENSOR
ABOVE EXPECTED
SNOW LINE
DO NOT USE
EXTERNAL
24 VAC OR
120 VAC
SOURCE.
DAMAGE TO
COMPONENTS
OF HUMIDIFIER
CAN OCCUR.
FURNACE
BLOWER
24 VAC
HIGH
LOW
MODEL
50
SHUT-OFF
(SADDLE VALVE)
WATER SUPPLY
COMMON
LEADS TO
APRILAIRE
TERMINALS
CONNECT SAFETY
OVERFLOW LINE HERE