Trane Horizon OABD Series - OAB if Heater Air Inlet Hood and Flue Assembly Instructions for Outdoor Installations

Installation
80 OAU-SVX007A-EN
OAB IF Heater Air Inlet Hood and Flue
Assembly Instructions for Outdoor
Installations
Unit is shipped with the IF heater air inlet hood, flue cover, and
flue stowed in the blower compartment.
Important: Assemble the flue to the heater and the inlet
hood and flue cover to the heater door before
attempting any unit startup.
Figure 127. Coil connection detail
Table 11. WSHP water connection sizes
Cabinet Size Tonnage Connection Size (in., MNPT)
OAB
3 1
4 1
5 1
6 1
7 2
8 2
9 2
OAG
10 1
12 1.5
15 1.5
17 2
20 2
22 2
25 2
30 2
OAK
12 1.5
15 1.5
17 2
20 2
22 2
25 2
30 2
OAN
30 2
35 2.5
40 2.5
45 2.5
50 2.5
54 2.5
Actuator(Typical)
BallValve(Typical)
WaterIn
WaterOut
NPTMaleConnection (Typical)
FluidFlowProvingSwitch(Typical)
PressureTap(Typical)
CenterDrainPan
Coil
Figure 128. Flue cover
Figure 129. Flue
Figure 130. Wind screen