12
ELECTRONIC THERMOSTAT INSTALLATION
Field Connections
This section is intended as a quick reference only and should not
replace a complete review of thermostat Installation Instructions.
The GZ unit can be installed as communicating or
non--communicating with UI communicating or standard
non--communicating thermostats.
Match
User Interface
(UI) to GZ
Standard 2---stage
Thermostat to GZ
FE
Yes
No
Communicating
Furnace
Yes
Yes
Non---communicating
Fan Coil
No
Yes
Non---communicating
Furnace
No
Yes
NOTE
: Matching geothermal systems with non--communicating indoor models will
not offer full communicating functions from the UI.
Communicating
User Interface (UI) is designed to self--program with the GZ unit
when connected to the ABCD connector on the UPM board. Only
two (2) wires are needed from the UI for the AB connections since
the GZ unit has a transformer for the 24v (see Fig. 12 and 13).
NOTE
: It is always a good idea to run extra thermostat wires
during installation in the event of faulty wires, etc.
Communicating System Tips:
S
The GZ units include an Outdoor Air Temperature (OAT) sensor
in the literature packaging. Refer to Table 9 for thermostats that
can incorporate this OAT and the thermostat instructions for
wiring.
S
The GZ unit must be used with Wall Control version 13 or newer
software for communicating connections.
S
Energy tracking is not available for the geothermal products at
this time for the Wall Control V13 software. However, future UI
software versions will have this feature.
S
Wi--Fi capability will be available with the Wi--Fi Wall Controls
SYSTXCCITC01, SYSTXCCITW01, SYSTXBBECC01,
SYSTXBBECW01.
S
To enter the Wall Control service mode hold the service cap in the
main menu for about 10 seconds until it turns green then release.
S
The last 10 system faults can be found in the service screens.
Flash codes on the UPM board flash only an active code with
series of short and long flashes on the amber LED. A code 37 will
appear on the UPM LED as 3 short flashes followed by a pause
then 7 long flashes followed by another pause and repeats this
series. The Wall Control will display text on the screen for the last
10 events.
S
Exit service screens by selecting ”Done”.
Non--Communicating
On non--communicating system, the two--stage control receives
24VAC low--voltage control system inputs through the Y1, Y2,
and O connections located at the bottom of the control board (see
Fig. 14.)
On a non--communicating system, output W1 is
connected to the control board for auxiliary heat. For
Non--communicating, any standard multi--stage HP (3 heat, 2 cool)
thermostat is acceptable. Non--communicating will not have full
features. Refer to Table 9 for the recommended communicating
and non--communicating thermostats.
A
B
C
D
A
B
C
D
Communicating System
Wall Control
Green - Data A
Yellow - Data B
White - COM
Red - 24VAC
OAT
Optional Remote
Room Sensor
HUM
COM
24V
Humidifier
Connection
S2
S1
A
B
C
D
ABCD
Connections
Communicating
HP
Green
Yellow
OAT
Sensor
(Optional)
Communicating
Variable-Speed
Furnace / Fan Coil
A150168
Fig. 12 -- Universal Two--Wire Connection
A
B
C
D
Communicating System
Wall Control &
Smart Sensor(s)
Green
Yellow
White
Red
OAT
HUM
COM
24V
Humidifier
Connection
A
B
C
D
OAT
Sensor
(Optional)
A B C D
A B C D
Damper
Control
module
A B C D
Communicating
Indoor Unit
Communicating
HP
A150169
Fig. 13 -- Zoning Connection for Communicating Indoor Unit
with 2--Stage Communicating split geothermal unit
R
G
Y1
Y2
Thermostat
O
C
HP
R
G
Y1
Y2
O
C
Y1
Y2
O
C
FV/FE Only
(not required for
furnace application
Non-Communicating
Furnace / Fan Coil
A150461
Fig. 14 -- Connection for Non--comm. Furnace / Fan Coil
Table 9 – Recommended Thermostats
Carrier Systems:
Bryant Systems:
Infinity
r
Touch Wall Control
Evolution
r
Connex™ Wall Control
SYSTXCCITC01*
SYSTXBBECC01*
SYSTXCCITW01*
SYSTXBBECW01*
SYSTXCCITN01*
SYSTXBBECN01*
Performance™ Series
Preferred™ Series
TP---PRH01
T6---PRH
TP---NRH01
T6---NRH
TP---PHP01
T6---PHP
Cor
r
Wi---Fi™ Thermostat
Housewise
r
Wi---Fi™ Thermostat
{
TP---WEM01
{
T6---WEM01
* Version 13 or later software
{
No OAT sensor connection. The OAT is retrieved from the Internet.
The GZ unit is shipped with one OAT sensor TSTATXXSEN01---B
Note
: Any of the model numbers above may be followed by a revision
letter such as ”---A”.