Carrier 50TFQ008-012 specifications Outdoor-Air Hood Construction

6.Insert the hood divider between the hood sides. See Fig. 24 and 25. Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bot- tom filter rack for the aluminum filter.

7.Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 25.

8.Caulk the ends of the joint between the unit top panel and the hood top. See Fig. 23.

9.Replace the filter access panel.

10.Install all EconoMi$er IV accessories. EconoMi$er IV wiring is shown in Fig. 26. EconoMi$er2 wiring is shown in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air leakage is shown in Fig. 29. Return air pressure drop is shown in Fig. 30.

22 1/4”

LEFT

HOOD

SIDE

24 9/16”

B

TOP

PANEL

INDOOR COIL

ACCESS PANEL

SCREW

40 3/8”

HOOD DIVIDER

DIVIDER

OUTSIDE

AIR

HOOD

CLEANABLE

ALUMINUM FILTER FILTER

Fig. 24 — Outdoor-Air Hood Construction

BAROMETRIC RELIEF

FILTER CLIP

Fig. 25 — Filter Installation

FOR OCCUPANCY CONTROL

REPLACE JUMPER WITH

FIELD-SUPPLIED TIME CLOCK

LEGEND	Potentiometer Defaults Settings:
DCV— Demand Controlled Ventilation	Power Exhaust	Middle
	Minimum Pos.	Fully Closed
IAQ — Indoor Air Quality
	DCV Max.	Middle
LA — Low Ambient Lockout Device
	DCV Set	Middle
OAT — Outdoor-Air Temperature
	Enthalpy	C Setting
POT — Potentiometer

RAT — Return-Air Temperature

NOTES:

1.620 ohm, 1 watt 5% resistor should be removed only when using differential enthalpy or dry bulb.

2.If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

3.For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set control minimum position POT. to the minimum position.

Fig. 26 — EconoMi$er IV Wiring

19