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Engineered air EngA G-TRAC2 - Linear Ambient Reset (During Day and Night) - Room Control with Intermittent Blower (During Night); Direct Control 0 - 10 VDC

Engineered air EngA G-TRAC2
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A G-TRAC2
IOM-25 27 of 42 Mar 99 R7
3. Linear Ambient Reset (During day and night) Room Control with Intermittent Blower (During
night)
During day operation the discharge temperature will be linearly reset based on the ambient temperature. Dipswitch A-2
must be on.
DURING THE DAY
Linear ambient reset
No room reset
NOTE: Set point must be higher than the normal operating setting or normal reset amount.
Direct Control 0 10 VDC (CTRAC, Metasys)
This section discusses direct control of the G-TRAC2. The G-TRAC2 must be configured to operate as a slave to another
temperature controller while retaining its burner management roll. If your wiring is for the more common ‘BMS Reset
Mode’ refer to the BMS Reset in section XVII above.
Y
S
SP
Connect S to SP if
required to use set-
point dial
24 V SUPPLY POWER
COMBUSTION MOTOR
HOT 120 OR 24
HOT 24v
FAN SW
Air Flow
Switch
NEUTRAL
E
DM
DM
C
SA
C1
FS
K
LK
N
24V
PV
MV
IGN.
CONTROL
NIGHT SIGNAL
CONTACT
HS
Q
U
M
OR
S
SP
V
X
Y
Z
+
-
T1
T2
CB
PV
PV
M
V
1
3
2
HEAT
OVERIDE
CONTACT
DM
AS

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