Trane OABD OABE OADD OADE OAGD OAKD OAKE OAND OANE Catalog

OAU-PRC001E-EN

Indirect Gas-fired Furnace Heater and Power

Figure 50.

OAB, OAD, OAG, OAK, and OAN indirect gas-fired furnace heater and power

INDUCER MOTOR

INLET PRESSURE TAP

IGNITION

ON/OFF GAS VALVE

MANIFOLD GAS

INLET PRESSURE =
7" W.C./14" W.C.

AIR-PROVING

PRESSURE TAP

SWITCH

MINIMUM/MAXIMUM

PRESSURE TAP

MANIFOLD GAS

ROLLOUT SWITCH

CONTROLLERS

MINIMUM/MAXIMUM
INLET PRESSURE =
7" W.C./14" W.C.

CONDENSATE DRAIN
(TYP. 2)

INDUCER BLOWER

MODULATING VALVE

FLAME
SENSOR

HIGH LIMIT
SWITCH

ROLLOUT
SWITCH

MODULATING
GAS VALVE

MAIN POWER ENTRANCE
FOR UNIT