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N
EO
T
HERM
Boilers and Water Heaters
Lead/Lag
Set Up
You can cascade up to eight NeoTherm boilers together. One boiler becomes the Lead or Master control
and the other boilers become the Lag or Slaves controls.
Note:
The system sensor and outdoor sensor will need to be wired to the Master boiler only.
The input from these sensors is used by the Master control to control the modulation rate of all
of the operating boilers it is connected to. See the manual for sensor and cascade wiring.
When a boiler is operating as part of a Lead/Lag system, it does not use the normal “
CH set point”
– it
uses the
“Lead/Lag CH set point” on the Master control
.
It is STRONGLY recommended to start each boiler to complete combustion set up and perform all safety
checks before setting up Lead/Lag cascade. See page 16-17 for combustion set up.
1. To log in, start from the Home Screen. Press the
controller icon.
Note: Some parameters will require a log in.
2. Press the pad lock symbol on the top right
side of the screen.
3. The key pad will appear.
Next, type in the password
“LNT”,
then press
“OK”.
lnt
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The log in will need to be completed on each boiler.
