MagnaTherm Boilers and Water Heaters
Page 65
is used with the Outdoor Reset and Warm Weather
Shutdown features.
Wiring
For single boiler operation, the outdoor sensor will
be connected to TB1-21A and 22A.
For Lead Lag operation of multiple boilers, the
outdoor sensor will be connected to TB1-21A and
22A on the Lag Boiler, and the system sensor
(supplied with boiler) will be connected to TB1-21A
and 22A on the Lead boiler.
For Lead Lag operation of a single boiler, an
Envirocom outdoor sensor (sold seperately) will be
installed on the Solas ECOM port and the system
sensor will be installed on TBI-21A and 22A.
9.H.4 DHW - Domestic Hot Water
Configuration
DHW - Domestic Hot Water is used to configure the
DHW temperature parameters for water heaters
(MGV) and for indirect water heaters that are used
with boiler (MGH) systems.
9.H.5 Warm Weather Shutdown
Configuration
Connect the outdoor reset sensor as descibed in
Section 8.D
From this menu you will be able to enable/disable
the Warm Weather Shutdown feature and adjust the
set point.
9.H.6
DemandPriorityConfiguration
From the Demand Priority Configuration, the installer
can adjust the priority of the different demand types.
-Central Heat
-Domestic Hot Water
-Lead Lag
The control uses arrows as indicators to point to the
loop with higher priority.
9.H.7
ModulationConfiguration
From this menu the installer has the ability to adjust
the range of modulation for the CH, and DHW
demands. This unit is designed with a 5:1 turn down
ratio. Any change to the minimum and maximum
modulation rates will affect the overall ratio of
the boiler. The installer level password will allow
changes to these parameters. Consult the factory if
an adjustment is needed to any of these parameters.
