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Boiler Pump Operation (ALL Boilers)
Description
•
To activate the
boiler pump on a
call for heat. This
function also
includes a post
pump feature.
Isolation Valve Operation (ALL Boilers)
Description
•
Building pump varies flow
through boiler based on demand
Sequence of operation where two or
more boilers or programmed to
operate in lead lag
1.
Lead isolation valve is opened
using Pump B (Central Heat
Pump) contacts
2.
Remote Operator closes to
initiate call for heat
3.
Prepurge, Honeywell SOLA
checks that all boiler safeties
are closed before ignition
attempt
4.
Lead boiler fires up to base
load rate (Default: 80%) for a
period of time (Add Stage:
Interstage
delay)
5.
An additional boiler is needed
when:
Lead lag temp < (Lead lag
setpoint – Add stage Error
threshold) AND (Interstage
delay timer has expired)
6.
Lag boiler is called to start
7.
15-second delay exists
between a call for heat and
closure of Pump B contacts
8.
Lag boiler performs prepurge,
Honeywell SOLA checks that
all boiler safeties are closed
before
ignition attempt
Electrical Connection(s)
Electrical Connection(s)
Programming Instructions
1)
Select Pump Configuration
2)
Press [Advanced Options >>]
3)
Press the
to arrive at Central Heat Pump or DHW Pump
4)
On Options:
Local burner demand
5)
On Options: Local Lead Lag
6)
Force On:
Outlet high limit
Programming Instructions
1)
Press
and
2)
Select Pump Configuration
3)
Scroll to Central Heat Pump
4)
Select Pump start delay. Change this to 15 seconds
a.
If the Pump start delay parameter does not appear on
screen, use the following steps:
b.
Go to the Home Screen
c.
Press
d.
Press
e.
Press
f.
Enter Register Address: 292
g.
Press
h.
Enter Register Value: 15
i.
Press
28
Service Active
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