Install Instructions

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5. Multiple Boiler Sequencer Screens
When the Sequence Master is enabled the following screens are available:
X. Operation E. Boiler Sequence Of Operation (continued)
Sequence Status:
Slave boiler status is provide as follows:
Available:
Add Stage:
Running:
On Leave:
Recovering:
Disabled:
Boiler is ready and waiting to be started by the Sequencer
Master.
Boiler has begun the start sequence but has not yet reached
the boiler running status.
Boiler is running.
Boiler has left the network to service a DHW demand.
Boiler is in the process of returning to the network. For
example, the slave boiler is in the Postpurge state.
Note: The recovery time is normally 30 seconds. However,
if the slave boiler fails to start the recovery time increases
from 30 seconds to 5, 10 and 15 minutes.
Boiler has a lockout condition and is unable to become
available to the Sequencer Master.
The “Networked Boilers” screen is selected by “pressing” the “Detail” button from the “Home” screens and “pressing” Networked
Boilers” from the “Detail” screen.
Boiler Number:
Up to eight (8) boiler’s status is
shown
Lead Boiler:
Upon power up the lowest
numbered boiler becomes the lead
boiler. The lead boiler is the rst
to start and last to stop. The lead
boiler is automatically rotated after
24 hours of run time.
Additionally, the lead is rotated if
there is a lead boiler fault.
Firing Rate:
Demanded ring rate is
provided.
The Sequencer Status screen is selected by “pressing” “Status” button from the “Home” screen when Sequence Master is
enabled.
Header:
measured header water
temperature. This is the
temperature being used to start,
stop and re boiler when there is a
call-for-heat.
Setpoint:
this is the active setpoint. This
temperature is the result of Outdoor
Air Reset, Setback and Domestic Hot
Water (DHW) selections.
Networked Boiler Status:
Provides connected, start sequence and ring rate status information for all connected boiler addresses. The boiler number is
underlined if the boiler is running and blinks if the boiler has the start sequence in progress. For example the status for boiler
address 1 is provided as follows:
1 - Boiler 1 is connected to the network
1 - “Blinking underline” - boiler 1 is starting
1 - “Solid underline” - boiler 1 is running
Rate:
The rate % value is equal to the
Sequence Master demand to the
individual boiler. Actual boiler ring
rate is found on the individual boiler
status pages.
Priority:
The selected Sequencer Priority
is shown. Available Priorities are:
Standby (no call for heat is present),
Central Heat, Auxiliary Heat,
Domestic Hot Water, Frost Protection
or Warm Weather Shutdown.