12
Heat-Timer Corp.
059040-00 C
• When Setback is selected in the Startup, a BMS/EMS or external clock can provide a Setback signal using these input terminals.
No Day/Night Schedule will be available when Setback is selected from the Shutdown/Tstat/Setback mode in the Startup menu.
• The signal must be a dry contact only. No voltage can be placed across the
SHUTDOWN/TSTAT/SETBACK
terminals.
• Bring the two wires from the dry contact to the terminals marked
SHUTDOWN/TSTAT/SETBACK- 31,32
.
WIrIng tHe prove
(Terminals 29, 30)
• The Prove feature is provided to check system component operation and must be selected in the Startup Menu.
See "Prove/Domestic Hot Water (DHW) Priority" on page 18.
• A typical use of this feature is to check for pump flow before firing any boiler.
• If the PROVE input is open on a call, the Mini-MOD will enable only the System Output. All boiler outputs will
be off when the
PROVE
input is open.
• A factory-installed jumper provides the System Prove signal. Do not remove the jumper unless it will be replaced
by a System Prove signal or use the terminals for DHW call.
• Bring the two wires from the dry contact to the terminals marked
PROVE - 29, 30
. No voltage can be placed
across the
PROVE
terminals
WarnIng
The PROVE input cannot be used as a safety limit. All equipment must have its own
certified limit and safety controls as required by local codes. If Prove is selected in the
startup menu, no boiler stage will start unless Prove terminals are shorted. DO NOT
remove the PROVE jumper supplied unless replacing it with a Prove signal.
Mini-MOD
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN
PROGRAM
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12
13
15
14
17
16
18
22
20
19
21
24
23
29
25
27
26
28
32
30 31
L N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
PROVE
/DHW
SHUTDOWN
/SETBACK
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
CLASS 1 WIRE ONLY.
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
/TSTAT
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
Prove Signal
Mini-MOD
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN
PROGRAM
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12
13
15
14
17
16
18
22
20
19
21
24
23
29
25
27
26
28
32
30 31
L N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
PROVE
/DHW
SHUTDOWN
/SETBACK
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
INPUT RATINGS:
USE COPPER WIRE,
CLASS 1 WIRE ONLY.
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
/TSTAT
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
DHW Signal
WIrIng tHe doMestIc Hot Water call dHW
(Terminals 29, 30)
• DHW can be used to raise system Set Point to the DHW Set Point. DHW with or without Priority must be
selected in the Startup Menu. See "Prove/Domestic Hot Water (DHW) Priority" on page 18.
• DHW Call terminals are dry contact N.O. terminals.
• Wire an aquastat or other controls to provide closure on the
DHW Call
terminals.
• Remove the jumper on the
DHW
terminals for proper operation.
WIrIng tHe systeM output
(Terminals 3, 4)
System Output Operation in Set Point Mode
• The SYS output relay will energize when the outdoor temperature drops below the Outdoor Cutoff or whenever a
boiler output is active. If no outdoor sensor is connected and the last boiler relay has de-energized, the SYS relay
will remain energized for a period set by the Run-On. See "Run-On" on page 24.
• No boilers will be activated until the prove input is shorted. If a Prove is not required, the factory-installed jumper
should remain connected.
• A typical use of the SYS output is to activate a system pump starter. The pump can run whenever there is a call for
heat. When heat is no longer required, the pump will stay active for an adjustable Pump Run-On delay.
Mini-MOD
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN
PROGRAM
DO NOT APPLY ANY VOLTAGE
TO INPUT TERMINALS
3 4 5 6 7 8 9 10 11 12
13
15
14
17
16
18
22
20
19
21
24
23
29
25
27
26
28
32
30 31
L N
-
+
+
T
T
O
O
RS-485
mA
GND
VLT
SYS
A
B
C
D
PWR
CUR / VLT
A
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
-
+
+
mA
GND
VLT
+
mA
TEMP
OUTDOOR
O
O
TEMP
SYSTEM
EXTENSION
MODULE
CUR / VLT
B
CUR / VLT
C
CUR / VLT
D
PROVE
/DHW
SHUTDOWN
/SETBACK
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 30VA MAX
INPUT RATINGS:
USE COPPER WIRE,
CLASS 1 WIRE ONLY.
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
/TSTAT
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
System Pump
or Pump Starter
L
N
L
N
System Output Operation in Reset Mode
• The SYS output relay will energize whenever the outdoor temperature is below the Outdoor Cutoff.
• The SYS will remain constantly energized while the outdoor temperature is below the Outdoor Cutoff.
• When the outdoor temperature rises 2°F above the Outdoor Cutoff, the SYS output will remain energized for the
period set by the Run-On. See "Run-On" on page 24.
• The SYS output has one Normally Open (N.O.) relay contact rated for (⅛ HP).
• The N.O. contacts are dry contacts only. They do not source any voltage.
• Class 1 voltages must enter the enclosure through a different opening from any Class 2 voltage wiring.
• Each N.O. contact is capable of switching 6 A resistive at 120VAC.
