Trane RAUJ-C20 Installation, Operation And Maintenance Manual page 81

Figure 55. Q667 switching subbase & T7067 thermostat terminal identification
Switching Subbase
(Honeywell Q667)
System
COOL
AUTO 5
10
4
HEAT
3
ON 9
7 1
6 2
8
Fan
AUTO
ON
Terminal Layout
Wiring Terminal Identification:
1 = Common (- DC) and
Night Setback/Setup Input
2 = +20 VDC Input
3 = Duct Sensor Input
4 = COOL Signal Output
5 = HEAT Signal Output
RAUC\Thermostat Terminal ID
Table 26. (Q667) switching subbase
Subbase
Switch
Check Continuity
Positions
between These Terminal
System
Fan
N/A 9 (Subbase) & 10 (Subbase)
ON
9 (Subbase) & 10 (Subbase)
AU-
5 (Subbase) & 5 (T'stat)
OFF
TO
4 (Subbase) & 4(T'Stat)
9 (Subbase) & 10 (Subbase)
AU-
5 (Subbase) & 5 (T'stat)
HEAT
TO
4 (Subbase) & 4(T'Stat)
9 (Subbase) & 10 (Subbase)
AU-
5 (Subbase) & 5 (T'stat)
AUTO
TO
4 (Subbase) & 4(T'Stat)
9 (Subbase) & 10 (Subbase)
AU-
5 (Subbase) & 5 (T'stat)
COOL
TO
4 (Subbase) & 4(T'Stat)
Thermostat Checkout
Once the subbase is mounted, before connecting any
wiring, use an ohm meter and complete the continuity
checks listed in .
SS-SVX11K-EN
OFF
ON
HEAT
9
FAN
AUTO
AUTO
COOL
8
OFF
7
HEAT
AUTO
6
COOL
1
OFF
2
HEAT
AUTO
3
COOL
System
Internal Wiring Schematic
6 = Heating Setback
7 = Not Used
8 = Night Setup of Cooling
Setpoint
9 = Fan Switching
10 = Fan Switching
Circuit
should
Pairs be
Closed
Open
Open
Open
Open
Closed
Open
Closed
Closed
Closed
Closed
Open
Closed
Electronic Thermostat
(Honeywell T7067)
10
4
7 1
6 2
5 3
5
4 8
Wiring Terminal Identification:
1 = Common (- DC) and
Night Setback/Setup Input
2 = +20 VDC Input
3 = Duct Sensor Input
4 = COOL Signal Output
5 = HEAT Signal Output
6 = Heating Setback
7 = Not Used
8 = Night Setup of Cooling
Setpoint
Thermostat Wiring
H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d
r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o
p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
Before installing any connecting wiring, see drawings
in the Dimensions and Weights chapter for the
electrical access locations provided on the unit. Wire
the thermostat in accordance with field connection
diagram, numbers 2307-9122 (for 20 to 60 ton units)
and 2307-9144 (for 80 to 120 ton units).
Discharge Air Sensor (Honeywell 6RT1)
A discharge air sensor ships with each unit when the
constant volume control option is ordered. The sensor
should be installed in a turbulent free area of the
discharge air duct at a location that will provide
accurate supply air sensing. Refer to the illustration in
Figure 52, p. 77
information.
I I n n s s t t a a l l l l a a t t i i o o n n E E l l e e c c t t r r i i c c a a l l
W W A A R R N N I I N N G G
for installation and sensor dimensional
81