MagnaTherm Boilers and Water Heaters
Page 53
9.7.18 Lead Lag Master Configuration
Then set up the Master controller by going to the Lead
Lag Master boiler and opening up the Lead Lag Master
Configuration in that boilers Configuration Menu.
Select Master Enable
Select OK and then Back out to the Main Menu.
Wiring Connections for Lead/Lag -
now you can make the Modbus wiring connections
between the units. The controller in each boiler
includes two wiring terminals for the Modbus system,
labeled “MB1” and “MB2.” MB1 has the wiring
connections to the User interface display on each
unit, and MB2 is used to communicate with the other
boilers in the Lead/Lag system.
To reach the controller, open the cabinet of the boiler
by turning the door lock and then opening the doors.
The wiring from the controller on the first boiler runs
to the controller on the next boiler. Use 22 AwG or
thicker shielded twisted-pair wire with drain. Two
twisted pairs or three conductors are needed. wire A
on MB2 of Boiler 1 must be connected to A on MB2
of Boiler 2, wire B on Boiler 1 goes to B on Boiler
2, and wire c on Boiler 1 goes to c on Boiler 2.
Repeat this wiring for any other boilers in the system.
connect all of the drain wires and ground the drain
wire on one end of the assembly only.
SECTION 9.8 - Parameter Defaults & Ranges
Config Group
CH Config- Central Heat
CH Config- Central Heat
CH Config- Central Heat
CH Config- Setpoint
CH Config- Setpoint
CH Config- Setpoint
CH Config- Setpoint
CH Config- Setpoint
CH Config- Setpoint
CH Config- Setpoint
CH Config- Modulation
CH Config- Modulation
CH Config- Modulation
CH Config- Modulation
CH Config- Modulation
Outdoor Reset Config
Outdoor Reset Config
Outdoor Reset Config
Outdoor Reset Config
Outdoor Reset Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
DHW Config
Config Group
Warm Weather Shutdown Config
Warm Weather Shutdown Config
Demand Priority Config
Demand Priority Config
Modulation Config
Modulation Config
Modulation Config
Pump Config- Boiler Pump
Pump Config- Boiler Pump
Pump Config- Boiler Pump
Pump Config- Boiler Pump
Pump Config- Boiler Pump
Pump Config- DHW Pump
Pump Config- DHW Pump
Pump Config- DHW Pump
Pump Config- DHW Pump
Pump Config- DHW Pump
Pump Config- System Pump
Pump Config- System Pump
Pump Config- System Pump
Pump Config- System Pump
Pump Config- System Pump
High Limits
Delta T Limits
Delta T Limits
Delta T Limits
Delta T Limits
Frost Protection Config
Frost Protection Config
Frost Protection Config
Frost Protection Config
Burner Control Ignition
System Config
System Config
System Config
System Config
System Config
Sensor Config
Config Group
Lead Lag Slave Config
Lead Lag Slave Config
Lead Lag Slave Config
Lead Lag Slave Config
Lead Lag Master Config
Lead Lag Master Config
Lead Lag Master Config
Lead Lag Master Config
Lead Lag Master Config
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Adv Settings - Central Heat
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Advanced Settings - DHW
Lead Lag Master Config-
Adv Settings - Frost Protect
Lead Lag Master Config-
Adv Settings - Frost Protect
Lead Lag Master Config-
Adv Settings- WWSD
Lead Lag Master Config-
Adv Settings- WWSD
Lead Lag Master Config-
Adv Settings-Algorithms
Lead Lag Master Config-
Adv Settings-Algorithms
Lead Lag Master Config-
Adv Settings-Algorithms
Lead Lag Master Config-
Adv Settings-Rate Allocation
Config Group
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings - Outdoor Reset
Lead Lag Master Config-
Adv Settings-Add Stage
Lead Lag Master Config-
Adv Settings-Add Stage
Lead Lag Master Config-
Adv Settings-Add Stage
Lead Lag Master Config-
Adv Settings-Add Stage
Lead Lag Master Config-
Adv Settings-Add Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Drop Stage
Lead Lag Master Config-
Adv Settings-Modulation
Lead Lag Master Config-
Adv Settings-Modulation
Lead Lag Master Config-
Adv Settings-Modulation
Lead Lag Master Config-
Adv Settings-Modulation
Lead Lag Master Config-
Adv Settings-Modulation
10
0
0-100
0-100
5F
20
2F - 30F
0-100
Parameter Name
Default
Available settings or Ranges
Enable / Disable
210F
10F
50F - 210F
0F - 30F
0 min 2 sec
Disabled
0 min 0 sec - 15 min 0 sec
All Boilers Off
Drop Lead Boiler on Error Threshold
2F
20%
0F - 50F
0% - 100%
Error Threshold
0 min 2 sec
Error Threshold
Firing Rate Threshold
Disable
0 min 0 sec - 15 min 0 sec
20%
5 min 0 sec
0% - 100%
0 min 0 sec - 120 min 0 sec
0 min 15 sec
5F
0 min 15 sec - 240 min 0 sec
0F - 50F
Error Threshold
20% - 100%
Error Threshold
Firing Rate Threshold
Disable
Measured Run Time
168 hrs 0 min 0 sec
(7 days)
Sequence Order
Measured Run Time
0 min 0 sec - 1080 hrs 0 min 0 sec
95F
Measured Run Time
35F - 140F
Sequence Order
Measured Run Time
200F
Shutdown Immediately
40F - 200F
Shutdown Immediately
Disabled
240 min or (4 Hrs)
0F
15 min 0 sec - 600 min 0 sec
0F - 50F
120F
120F
40F - 160F
40F - 190F
65%
65F
40F
40F - 150F
-40F - 90F
0%
Disabled
0% - 100%
Enable
Disable
DHW > CH
Enabled
CH > DHW
DHW > CH
Enable
Disable
Drop After Priority Time
240 min or (4 Hrs)
Boost During Priority Time
Drop After Priority Time
0 min 0 sec - 1092 min 0 sec
120F
100F
40F - 195F
40F - 195F
140F
Disabled
50F - 200F
STAT Terminal
DHW (S6) Sensor Shorted
Disabled
130F
120F
40F - 200F
40F - 195F
Local
150F
Local
S2 (J8-6) 4-20 mA
40F - 200F
100F
STAT Terminal
40F - 195F
STAT Terminal
Modulation Sensor
Disable
130F
120F
40F - 200F
40F - 195F
Disabled
150F
Enable / Disable
40F - 200F
0
2
0-8
1-250
Disabled
Equalize Run Time
Enable / Disable
Equalize Run Time
Use First
Use Last
0 min 0 sec
S5 (j8-11) Sensor
0 min 0 sec - 10 min 0 sec
S5 (J8-11) Sensor
EnviraCOM Outdoor Sensor
Unconfigured
0 min 0 sec
0 min 20 sec
0 min 0 sec - 5 min 0 sec
0 min 0 sec - 5 min 0 sec
Fahrenheit - F
1 min 0 sec
Fahrenheit - F
Celsius - C
0 min 0 sec - 15 min 0 sec
0%
Off
0% - 100%
On \ Off
Enabled
Enabled
Enable / Disable
Enable / Disable
5
Enabled
1-10
Enable / Disable
1 min 0 sec
Recycle & Delay
1 min 0 sec - 60 min 0 sec
Recycle & Delay
Recycle & Delay with Retry Limit
Lockout
195F
60F
100F - 210F
10F - 70F
checked
not checked
Check Box
Check Box
0 min 10 sec
checked
0 min 0 sec - 15 min 0 sec
Check Box
not checked
Auto
Check Box
Auto \ On
checked
checked
Check Box
Check Box
Auto
0 min 10 sec
Auto \ On
0 min 0 sec - 15 min 0 sec
checked
not checked
Check Box
Check Box
5 min 0 sec
checked
0 min 0 sec - 15 min 0 sec
Check Box
25%
Auto
22% - 50%
Auto / On
100%
100%
60% - 100%
60% - 100%
CH < LL Slave
CH < DHW
LL Slave < DHW
CH < DHW
Arrow Points to Loop with Higher Priority.
Arrow Points to Loop with Higher Priority.
Shutdown Immediately
95F
Shutdown Immediately
Disabled
35F - 140F
10
0
0-100
0-100
Available settings or Ranges
Default
DHW > Lead Lag
20
DHW > Lead Lag
Lead Lag > DHW
0-100
240 min or (4 Hrs)
DHW > CH
0 min 0 sec - 1092 min 0 sec
CH > DHW
DHW > CH
10F
5F
2F - 30F
2F - 30F
60F
120F
40F - 200F
40F - 200F
Drop After Priority Time
Auto:DHW (S6) or Outlet
Only
Boost During Priority Time
Drop After Priority Time
DHW Sensor
Outlet Sensor
Inlet Sensor
Auto: DHW (S6) or Inlet Sensor
Auto: DHW (S6) or Outlet Sensor
Enabled
Auto:DHW (S6) or
Sensor Only
Enable / Disable
Sensor Only
STAT Terminal
Auto: DHW (S6) or EnviroCOM DHW
Auto: DHW (S6) or Sensor only
DHW Sensor with On/Off Temperatures
120F
40F
40F - 200F
40F - 180F
65F
0
-40F - 120F
-40F - 100F
0
Disabled
0-100
Disable / Enable
0-100
Outlet
Local
Outlet
Inlet
S5 (J8-11) sensor
None
Local
S2 (J8-6) 4-20 mA with Sensor on/off
S2 (J8-6) 4-20 mA with Burner on/off
120F
140F
40F- 200F
40F- 200F
All Boilers Off Threshold
Off Hysteresis
On Hysteresis
P Gain
I Gain
D Gain
Enable
STAT Terminal
STAT Terminal / Sensor Only
10F
15F
2F- 30F
2F- 30F
140 F
140 F
40F- 200F
40F- 200F
No
Local
YES / NO
Local / S2 (J8-6) 4-20 mA
20
10
0-100
Method 1
Detection Time 1
Error Threshold
Rate Offset
Interstage Delay
Boiler Off Option
Base Load Common
Method 1
Detection Time 1
Error Threshold
Rate Offset
Interstage Delay
Outdoor Boost Maximum Off Point
Enable
Setpoint
Lead Selection Method
Lag Selection Method
Lead Rotation Time
Maximum Outdoor Temperature
Minimum Outdoor Temperature
Low Water Temperature
Minimum Boiler Water Temp
Outdoor Boost Time
Outdoor Boost Step
Priority Method
DHW Priority Override Time
DHW Has Priority Over CH?
Enable
Frost Protection Rate
Enable
Time of Day Setpoint
4 mA Water Temperature
20 mA Water Temperature
Demand Switch
Setpoint
Time of Day Setpoint
CH Time of Day Setpoint
DHW Setpoint
DHW Time of Day Setpoint
Demand Switch
Setpoint Source
Setpoint
Slave Enable
Slave Mode
Slave Sequence Order
Modbus Address
Master Enable
CH Setpoint
Temperature Units
Anti- Short Cycle Time
Low Fire Cutoff Time
Burner Off Inhibit Time
Alarm Silence Time
Outdoor Temperature Source
Delta T Retry Limit
CH Frost Protection Enable
DHW Frost Protection Enable
Lead Lag Frost Protection Enable
Lead Lag Frost Protection Rate
Pilot Test Hold
Outlet High Limit Setpoint
Delta T inlet/outlet degrees
Delta T Delay
Delta T Response
Use for Local Demands
Use for Lead Lag Master Demands
Use for Delayed Overrun
Pump Control
Overrun Time
Use for Local Demands
Overrun Time
Local Loops
Lead Lag
CH Maximum Modulation Rate
DHW Maximum Modulation Rate
Minimum Modulation Rate
Pump Control
Use for Lead Lag Master Demands
Use for Delayed Overrun
On Hysteresis
DHW Priority Override Time
DHW Priority vs CH
Parameter Name
Overrun Time
Use for Local Demands
Use for Lead Lag Master Demands
Use for Delayed Overrun
Pump Control
CH Enable
Demand Switch
CH has Priority over Lead Lag
Setpoint Source
Setpoint
Time of Day Setpoint
Low Water Temperature
Minimum Boiler Water Temp
DHW Enable
P Gain
I Gain
D Gain
Enable
Maximum Outdoor Temperature
Minimum Outdoor Temperature
Parameter Name
Available settings or Ranges
Default
Parameter Name
Available settings or Ranges
Default
Off Hysteresis
On Hysteresis
4 mA Water Temperature
20 mA Water Temperature
Modulation Sensor
Modulation Rate Source
Demand Switch
Priority Method
Modulation Sensor
DHW Priority vs Lead Lag
P Gain
I Gain
D Gain
Warm Weather Shutdown Enable
Warm Weather Shutdown Setpoint
Setpoint
Time of Day Setpoint
Off Hysteresis
9.8 Parameter Defaults and ranges
