Skuttle Indoor Air Quality Products 2000 Instrucciones De Instalación página 5

(15.24 cm) round duct required to make the
connection. Screw the 6 in. (15.24 cm) duct
to the discharge collar.
may also consult the furnace installation
manual or wiring diagram. If humidifier ter-
minals are present, proceed to No. 13.
If humidifier terminals are not present,
answer the following questions:
• Is the blower motor powered with a supply
greater than 120 volts?
10. Reattach the cover
assembly by hooking
it at the top of the
mounting frame, then
securing it with the
thumb screw at the
bottom.
11. Install the 6 in.
(15.24 cm) starting
collar on the opposite
plenum. Slip on a 90°
elbow and measure
the length of 6 in.
12. TO WIRE MODEL
2000 OR 2001 AND
THE HUMIDISTAT...
shut off the furnace
power. If the furnace is
relatively new, check
to see if there is an
electronic control board
with humidifier control
terminals (sometimes
marked HUM). You
• Does the blower motor change speed
when the thermostat's system fan switch is
activated during the heating mode?
• Does the blower motor change speed
when the air conditioning is activated?
If the answer to ANY of the above is YES,
skip to No. 13A.
If the answer to ALL of the above ques-
tions is NO, skip to No. 13B.
13. Using a meter, check the terminals for
power output during the heating cycle when
the blower is running. Determine the output
voltage. Some circuit boards have printed
indicators. Most are 24 volt AC and only
require connecting the humidifier solenoid
and the humidistat. (See Wiring Diagram A,
below. )
(If, in rare cases, the furnace terminals are
120 volt, connect the transformer to the
terminals and wire as shown in Diagram C
on page 4. )
Wiring Diagram A
1
Terminals on Board
2
Diagram Key
1. Humidistat
2. 24 Volt AC Humidistat Wiring
3. Humidifier
4. Solenoid
5. 24 Volt (HUM) Terminals on Furnace Board
3
OR
OR
3
4
5