Thermostatic Controls - Connecting XV95, XL16i, EnviraZone, IAQ t-stat, Venmar HRV & AprilAire 560

My Trane-dealer installed Sept-2008 HVAC system left much to be desired. So I’m upgrading HVAC controls and hope DIY expert will "look over my shoulder" so I don’t fry something. (I hope this post’s details prove time efficient.) Thanks in advance.

EXISTING: Trane HP (XL16i, 4TWX6048B1000BA), Trane AH (XV95, TUH2C100A9V4VAA), Trane A-Coil (4TXCC049BC3HCAA), Honeywell TZ-4 zone controller (configured for timed stage I/II progression), Honeywell TH6XXX t-stats, TZ-4 compatible DTS and OTS sensors, AprilAire 560 humidifier (w/HUMD300A, duct-mounted control), Venmar Constructo 2.0 HRV (w/White Remote Dehumidstat #11297, wall mounted).

CHANGES: FROM TZ-4 TO Envirazone (8835A); FROM TH6XXX TO IAQ (Ver. 2); FROM TZ-4-compatible DTS and OTS TO EnviraZone/IAQ-compatible sensors.

House: 3,900 SF, 4BR, MN location.

XV95 LVTB jumper status (changed to):
R & O jumpered
YLO & O jumpered
R & BK jumper removed
W1/W2 jumper removed
Y & O jumper removed

EnviraZone jumper status:
RH & RC jumpered
W1/E & W3/Aux jumpered


XV95 LVTB DIP SW settings: {DIP #: SW# - SW status: 0 = off, 1 = on}
SW1: 1-0 10 min staging delay, factory default
SW1: 2-0 10 min staging delay, factory default

SW2: 3-1 Heat “off” delay, factory default
SW2: 4-1 Heat “off” delay, factory default

SW3: 1-0 cooling airflow = 400 CFM/ton
SW3: 2-0 cooling airflow = 400 CFM/ton
SW3: 3-0 cooling airflow = 400 CFM/ton
SW3: 4-0 cooling airflow = 400 CFM/ton

SW4: 5-1 cooling delay off period = 1.5 min, 400 CFM airflow (Comfort-R disabled)
SW4: 6-0 cooling delay off period = 1.5 min, 400 CFM airflow (Comfort-R disabled)
SW4: 7-1 heating 1st stage ~1,136 CFM; 2nd stage = ~1,631 CFM
SW4: 8-0 heating 1st stage ~1,136 CFM; 2nd stage = ~1,631 CFM



Wire connections: IAQ --- EnviraZone
1 --- 1
2 --- 2
3 --- 3

Wire connections: EnviraZone --- Air Handler --- Heat Pump (NOTE: “XXX” = not connected)
RH --- R --- R
W1/E --- W1 --- XXX
W2 --- W2 --- XXX
Y1 --- YLO --- Y1
Y2 --- BK --- Y2
G --- G --- XXX
O/B --- XXX --- O/B


Wire connections: EnviraZone --- Humidifier
HUM1 & RH (jumpered) --- ODT
HUM --- ODT


Wire connections: EnviraZone --- HRV
VENT1 --- OL (ref. Venmar Product Sheet #91266A, pp. 12-13)
VENT22 --- OC (ref. Venmar Product Sheet #91266A, pp. 12-13)



IAQ Installer Setup Menu (ISU):
110 thru ISU 165 as appropriate
172 – 2
173 – 0
174 – 2
176 – 2
180 – 2
190 – 0
200 – 1
210 – 0
220 – 3
230 – 3
240 – 3
250 – 3
280 – 1
300 – 0
310 – 3
320 – 0
330 – 2
340 – 0
342 – 1
345 – 2
346 – 1
347 – 2
350 – 25
360 – 50
365 – 1
366 – 140
367 – 25
368 – 110
369 – 55
370 – 1
372 – 3
374 – 2
379 – 0
382 – 0
400 – 1
401 – 4
402 – 39
403 – 185
404 – 50
405 – 1
406 – 1
430 – 0
450 – 0
530 – 1

Comments/questions appreciated. Thanks for looking this over!

Welcome aboard, I'll look it over Friday evening when I get home from work.

It's getting late, and I need to get to bed.

Sorry!

XV95 LVTB jumper status (changed to):
YLO & O jumpered
Remove this jumper.

W1/W2 jumper removed
This needs to go back on.



XV95 LVTB DIP SW settings:
SW1: 1-0 10 min staging delay, factory default
SW1: 2-0 10 min staging delay, factory default
Change it to 15 minutes.
1-Off
2-On



SW4: 5 & 6 cooling delay off period
Turn on the Comfort-R (5 & 6 on)




Wire connections that needs to be changed.
EZone --- XV95 --- Heat Pump

Aux/E --- W1 -------X2
Y1 ------- Y/Y2 ----- Y1
Y2 ------- BK ------- Y2



Wire connections: EnviraZone --- Humidifier
HUM1 & RH (jumpered) --- ODT
HUM --- ODT
The duct mount control is taken out of the picture with this zone control.

Jumper from one of the R's down toe HUM1 as you already done. HUM2 goes to one of the wire on the humidifier valve. The other wire on the valve goes to C on the Zone board.


Wire connections: EnviraZone --- HRV
Looks good. Do you still have the white control on the wall?


IAQ Installer Setup Menu (ISU):

176 – 1
180 – 0
280 – 1 (can change this, makes good night light)
346 – 1 (?? you mean 0? I don't see 1 on my manual)
350 – 25 (could try colder, and see how well it works)
367 – 25 (I don't think it can go that low. 40˚ is good)
404 – 50 (can lower if you find it runs too much for your liking)

347 – 2
382 – 0
430 – 0
450 – 0
530 – 1
I don't see this in my manual. ???

What do you have the dip switch set to on the Zone board?

Thanks for fast reply! Below are my response to your questions. Please excuse if my format is unclear or inefficient as this is first time I've posted to forum.

Remove this jumper.

Will remove YLO & O jumper


This needs to go back on.

Will jumper W1/W2



XV95 LVTB DIP SW settings:
Change it to 15 minutes.
1-Off
2-On

OK


Turn on the Comfort-R (5 & 6 on)
OK



Wire connections that needs to be changed.
EZone --- XV95 --- Heat Pump

Aux/E --- W1 -------X2
Y1 ------- Y/Y2 ----- Y1
Y2 ------- BK ------- Y2

EZone's imprinted terminals are: L, C, RH, RC, W1/E, W2, W3/AUX, Y1, Y2, G, OB. Thus, I presume "Aux/E" = "W1/E." Yes?

XV95 LVTB's terminals are: BK, W2, W1, R, G, B/C, Y, YLO. O. Thus, I presume "Y/Y2" = "Y." Yes?



The duct mount control is taken out of the picture with this zone control.

I presume your reference is to humidifier - not DATS - control, and what you say makes sense.

Jumper from one of the R's down to HUM1 as you already done. HUM2 goes to one of the wire on the humidifier valve. The other wire on the valve goes to C on the Zone board.

Thanks, I questioned that connection after I re-read it. Will do.



Looks good. Do you still have the white control on the wall?

Yes, but it will be removed from operation.


IAQ Installer Setup Menu (ISU):

176 – 1
180 – 0
280 – 1 (can change this, makes good night light)
346 – 1 (?? you mean 0? I don't see 1 on my manual)
350 – 25 (could try colder, and see how well it works)
367 – 25 (I don't think it can go that low. 40˚ is good)
404 – 50 (can lower if you find it runs too much for your liking)


I don't see this in my manual. ???

Referenced ISUs come from http://techlit.honeywell.com/techlit/Pdf/68-0000s/68-0287.pdf, pp. 13-19. Everthing I've posted is "on paper." Actual implementation awaits DIY'S over-the-shoulder review. Thus, some of the referenced ISUs may not reveal when I actually connect hardware.
346-1 = 1 hour
350-25, same HP setting as TZ-4. Maybe lower will work "better" with EZone....
367-25, you are correct, 40F is low set point limit. My bad.
New question: TZ-4 manual #68-0259-1, pg. 16, states HP's upper DATS limit fixed at 120F, and TZ-4 enables variable set point, 110-160F, when non-HP source is called. E-Zone's manual doesn't mention calling-source upper limit switching flexibility. In contrast, EZone manual #68-0258ES-3, pg. 11, recommends 120F for heat pump operation, 160F for non-HP, but doesn't state calling-source upper limit selectivity as does TZ-4. I sent email inquiy to Honeywell, no reply yet. Do you know?

What do you have the dip switch set to on the Zone board?
1-0, 2-0, 3-1, 4-1, 5-0, 6-1, 7-0, 8-0, 9-1, 10-N/A

EZone's imprinted terminals are: L, C, RH, RC, W1/E, W2, W3/AUX, Y1, Y2, G, OB. Thus, I presume "Aux/E" = "W1/E." Yes?
Yes, a jumper between E and Aux.

XV95 LVTB's terminals are: BK, W2, W1, R, G, B/C, Y, YLO. O. Thus, I presume "Y/Y2" = "Y." Yes?

Yes, Y.

I presume your reference is to humidifier - not DATS - control, and what you say makes sense.
Yes.


Yes, but it will be removed from operation.
Ok



Referenced ISUs come from http://techlit.honeywell.com/techlit/Pdf/68-0000s/68-0287.pdf, pp. 13-19.
Looks like they have done software update from what I have. Thanks for the update info!


Thus, some of the referenced ISUs may not reveal when I actually connect hardware.
Correct.


346-1 = 1 hour
I would bump it to 2.


New question: TZ-4 manual #68-0259-1, pg. 16, states HP's upper DATS limit fixed at 120F, and TZ-4 enables variable set point, 110-160F, when non-HP source is called. E-Zone's manual doesn't mention calling-source upper limit switching flexibility.

In contrast, EZone manual #68-0258ES-3, pg. 11, recommends 120F for heat pump operation, 160F for non-HP, but doesn't state calling-source upper limit selectivity as does TZ-4. I sent email inquiy to Honeywell, no reply yet. Do you know
I was thinking last night that 160˚ sounded awful high, and was going to suggest a lower setting. Stay with 120˚


1-0, 2-0, 3-1, 4-1, 5-0, 6-1, 7-0, 8-0, 9-1, 10-N/A
Those all looks good.

JAY11J, the installation passed all published system tests and going gorward I'll be fine tuning it....

As an aside, this project was a learning experience in ways I did not expect. Specifically, I joined the ranks of some DIY members whose experience reflected dealers who were "unfamiliar" with the sophisticated HVAC controls & equipment they (infrequently?) sell.

I discovered several dealer-installed wiring/configuration/t-stat "mistakes" - more likely, silent compromises kept from me. Consequently, the dealer's original installation "worked" - i.e., heated in winter, cooled in summer - but given my discoveries, the equipment probably didn't deliver the benefits promised in Trane's sales literature that the salesman promoted.

In fact, the dealer installers flagrantly violated OEM installation instructions - e.g., DATS was installed immediately above the heat exchanger; TZ-4's ODT was installed outside where snow covered it in the winter; humidifier's ODT was installed in a cold air inlet hose 35 feet from the outside wall, not within 3 feet of outside wall.

Moreover, the 68xx t-stats so dummied down the XV95/XL16i that I could have purchased cheaper equipment and realized basic HVAC functionality. (My bad, the t-stats were not specified in the purchase order. I ignorantly thought the dealer would - never mind, you get the picture....)

Thanks to you and other DIY contributors, I know my IAQ/EnviraZone installation can enable Trane's designed-in features.

At the very least, homeowners venturing into HVAC deserve assurance that we are getting what we were sold and are paying for.... I suggest anyone purchasing a HVAC system write into the HVAC purchase order language like: "Dealer shall install all equipment & controls to be compliant with OEMs' published installation specifications; Dealer guarantees installed HVAC controls - t-stats, zone controllers, associated sensors, etc. - can, at a system level, deliver all features & benefits promoted in OEM's published sales literature, which shall become a part of this purchase order; Dealer shall deliver all installation documentation and User manuals for each as-installed component; final payment shall be made, at a minimum, after Dealer demonstrates System passes all relevant published OEM system tests."

I'm glad to help out here. If you need any more help. please let me know! ;-)


There are a lot of dealer who don't do what they should be doing, and sadly there are many things why. Here are some of them.

-Time is money.
-Too much stuff going on.
-Not keeping up the updates/upgrades.
-Don't take the time to read that model's manual. (thinking all are the same)


As I told another poster who I've been working with, the company I used to work for, the installer did not start up the system. I went out after the install was done, and I took care of the set up, wiring of the t-stat/controls, and going over the whole system with the home owner how it should work, and what to expect.. ect.. We had very little or no call backs cuz of this.