Carrier 48AW, 48EW, 48EY024-068, 48AY020-060 Adding Seal Strip to Sides of Hood Top Mounting Flange

HOOD SIDE (SLOTTED)

MOUNTING	HOOD
FLANGE
	TOP
HOOD SIDE

Fig. 38 — Adding Seal Strip to Sides of Hood Top

Mounting Flange

HOOD TOP

HOOD SIDE

Fig. 39 — Adding Seal Strip to Back of Hood Top

Mounting Flange

GRAY FOAM STRIP

CROSS MEMBER

Fig. 40 — Adding Foam Strip to Cross Member

Fig. 41 — Adding Foam Strip to Hood Side

BLOCKOFF BAFFLE

GRAY FOAM STRIP

Fig. 42 — Adding Seal Strip to

Blockoff Baffle

Minimum Damper Position (MDP) Setting — Setting of the outdoor air damper position is performed in conjunction with a shortened version of the field run test. This is performed by first opening DIP (Dual In-line Package) switch no. 4 then no. 6. See Fig. 27 and Direct Digital Controls DIP Switch Con- figuration section on page 63.

The outdoor-air damper closes. The control allows 90 sec- onds for the damper to close in case it is in the full open position. Next, the indoor-fan contactor will energize. The outdoor-air damper will remain at 0% for 30 seconds. It will then move to the 10% damper motor travel position for another 30 seconds. This will be repeated at every 10% increment for 30 seconds until the damper reaches 100% open. Close DIP switch no. 4 during the 30 seconds immediately after the de- sired outdoor air minimum damper position. The 30-second time period is to allow time where DIP switch no. 4 can be closed. The default value of the minimum outdoor air damper position is 20%. If the desired minimum position is 30%, al- lows the damper position to go to 10% for 30 seconds, then 20% for 30 seconds, and when it reaches 30% close DIP switch no. 4 during the 30-second period following the 30% position.

The minimum outdoor air damper position is now set. Close DIP switch no. 6.

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