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Y8150 FRESH AIR VENTILATION SYSTEM, W8150 FRESH AIR VENTILATION CONTROL
5 68-0282—07
Installing fresh air damper, ducting,
and control…
1. Disconnect power from HVAC system.
2. Install the weather hood, ducting, and damper following
local practices. Be sure all duct and insulation seams
are tightly sealed.
3. Mount the transformer and control.
TIPS:
• In general, larger ducting allows higher airflow, minimizes
additional fan run time and may be needed for larger
homes.
• Installing a damper directly to the return duct may be
convenient to support the damper and reduce ducting.
• Fresh air connection should be downstream of sensors
(such as a humidistat) in return air plenum.
• The EARD6 end stops can be used to reduce the amount
of airflow in the duct. To prevent complete opening, loosen
(but do not remove) the wing nut and move the upper lever
until the desired position is reached. Tighten the wing nut.
Keep the lower lever in the position shown.
Wiring the control…
CAUTION
Electrical Hazard.
Can cause personal injury or equipment damage.
Disconnect power to all systems before beginning
installation.
1. Wire the control. See wiring diagrams in Fig. 1-10 as
listed below. All wiring must comply with local codes,
ordinances, and regulations.
2. Reapply power to system and control.
TIP:
• Control package allows wire routing through side slots and
bottom openings.
UPPER LEVER
WING NUT
LOWER LEVER
M20155
System Hookup Diagrams Fig. No. Page No.
Single transformer, conventional 1 10
Dual transformer, conventional 2 10
Multi-stage, conventional 3 10
Heat pump without emergency heat 4 10
Heat pump with emergency heat 5 11
Accessory Hookup Diagrams Fig. No. Page No.
Wiring with a PC8900 Thermostat 6 11
Wiring with a remote switch/timer 7 11
Wiring to an HRV/ERV 8 11
Wiring an exhaust fan 9 11
Wiring a fan for a steam humidifier 10 12