22
Heat-Timer Corp.
059040-00 C
MaxIMuM Water teMp
Adjustable 90
º
F/21
º
C - 240
º
F/116
º
C
Default: 240
º
F/116
º
C
Button:
MENU/Set Point/Offset/..../Maximum Water Temperature
in Reset only
• This is the highest temperature heating water the Mini-MOD will circulate through the
heating system. It is available in Reset mode only.
• When using a radiation system, it should be set according to the tubing or floor
manufacturer’s specification.
• The Maximum Temperature must be at least 20°F higher than the Minimum Temperature
(See previous setting).
• The Maximum Temperature must be set lower than the boilers high limit for correct system
temperature control.
MAXIMUM WATER TEMP
240
o
F
[
]
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SAVE
systeM settIngs
Button:
MENU/<System Settings>
The Settings 1 and Settings 2 menus provide access to adjusting and fine-tuning the system for
enhanced comfort and more fuel savings. The Mini-MOD behaves differently based on the
selected Control Modes (see Startup Settings).
----- SETTINGS 1 ----
Gain
+0
Lead Rotation Time
Purge Delay 1.0min
Lag Delay
0min
<More Settings>
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SELECT
----- SETTINGS 2 ----
Standby Time 10min
Run-On
0min
Setback
0
o
F
Last Stage Hold 0
o
F
Set time
12:03Pm
<Day/Night Schdule>
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SELECT
SYSTEM
A
B
C
D
Full Modulation Sequencing Control
1 2
RUN
PROGRAM
FOR ALL CIRCUITS
120VAC, 6A RESISTIVE
OUTPUT RATINGS:
1A PILOT DUTY, 15A TOTAL
115VAC 60Hz , 12VA MAX
INPUT RATINGS:
USE COPPER CONDUCTORS ONLY
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
CAUTION
: RISK OF ELECTRIC SHOCK
More than one disconnect switch may be required
to de-energize the equipment before servicing.
PROVE
/DHW
SHUTDOWN
/TSTAT
/SETBACK
ENCLOSED
ENERGY
MANAGEMENT
EQUIPMENT
99RA
Mini-MOD
• Gain
• Lead Rotation
• Purge Delay
• Lag Delay
• Standby Time
• Run-On
• Setback
• Last Stage Hold
• Day/Night Schedules
alert
To be able to change the Mini-MOD settings the Program/Run Switch must be
set to Program. The switch is located under the Enclosure Wiring Cover for
security. The Enclosure Wiring Cover can be securely closed using a lock.
gaIn
Adjustable from -10 to +10
Default: 0
Button:
MENU/<System Settings>/Gain
• The Gain adjusts the aggressiveness of the Mini-MOD PID logic. It controls how much
modulation is changed when the system temperature is different from the Set Point.
• A Gain of 0 is a good starting point for all systems.
• If during normal load conditions, the system temperature tends to oscillate significantly,
decrease the Gain by two numbers (for example, from 0 to -2). Wait for at least 15 minutes
before evaluating how the change has affected the system.
• If, during normal load conditions the system temperature tends to remain consistently below
the Set Point (or consistently above the Set Point), increase the Gain by two numbers (for
example, from 0 to 2). Wait for at least 15 minutes before evaluating how the change has
affected the system.
-------- GAIN ---------
+0
[
]
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