803TStat wiring for Trane XL15i

[Woodshed]

Installing a Trane 803 TStat on a Trane 3.5 ton, XL15i single stage AC unit and a Trane VS air handler with one 10kw heat strip. I want Enhanced Mode enabled as well as the humidistat (dehumidification) mode enabled on the TStat.

Am I correct in using Fig. 5 on page 3 in the 803 TStat I/O manaul for the A/C unit and Figure 7 on page 3 for the air handler? Connecting Y&B of the A/C unit to Y&B/C of the A/H terminal block? Or do I just wire the TStat as shown in Figure 6 and remove the jumper between R & BK and do not use O?

The jumper between R & BK on the termianl strip was factory installed and I left that connected but the I/O manual for air handler states to remove that jumper and jump between R & O if using a humidistat. The Comfort-R pocket guide states to remove th R/BK jumper if humidistat is enabled but leave the jumper in if using Enhanced Mode.

As it's wired now, I am using R,Y,G,W1 & B/C on the terminal block of the A/H.

Is this the correct wiring for this unit?

Thanx,

[czkidd]

NO! Fig 6 is incorrect. I am assuming you are a tech. Fig. 5 is the one you want to use. Y & B at the Air Handler is fine. Maintain your wire color from T-stat to Air Handler and from condenser to Air Handler. Terminate at Air Handler Terminal Board period. Turn you Humidity control on through TStat parameter. Turn your Enhanced mode on at Air Handler micro switches. Power must be OFF when setting the microswitches and turned back on for reboot. I do not recommend Enhanced Mode ops. You may get humidity control problems in the summer time.

[Woodshed]

So, the factory installed jumper between R&BK should be removed, correct? The Comfort-R pocket guide says to keep the jumper in for Enhanced Mode, is this not correct for this application?

What does Enhanced Mode "ops" mean?