Carrier 48EZ(N)-A Specifications download pdf (Page 10)

TWO-STAGE GAS VALVE

1/8 NPTx3/4 IN. (19.1 MM) CLOSE PIPE NIPPLE

1/8 ELBOW

1/8 NPTx 2 IN. (50.8 MM) NIPPLE

LOW GAS PRESSURE SWITCH

Fig. 10 - Installing Elbows, Nipples, and Pressure Switch on Two-Stage Units

A09016

FURNACE CONTROL BOARD

PLUG P1

1 2 3 4 5 6 7 8 _

YEL

LEGEND

ORN = ORANGE

YEL = YELLOW

ORN -_ ORN _--

LGPS = LOW GAS PRESSURE SWITCH

CAPS = COMBUSTION AIR PRESSURE SWITCH

O = QUICK CONNECTION

Fig. 11 - Pressure Switch Wiring for Two-Stage Units

A06487

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Carrier 48EZ(N)-A Specifications Page 10