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28
Boiler Pump Operation (ALL Boilers)
Description
Electrical Connection(s)
Programming Instructions
•
To activate the
boiler pump on a
call for heat. This
function also
includes a post
pump feature.
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
Service Active
6)
Force On:
Outlet high limit
Isolation Valve Operation (ALL Boilers)
Description
Electrical Connection(s)
Programming Instructions
•
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
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
Summary of Contents for Valiant-FT II Series
Page 2: ...99 0419 Rev 00...
Page 40: ...36 PART 9 PIPING DIAGRAMS Figure 40 Single Boiler Hydronic Heating Zoned Piping...
Page 41: ...37 Figure 41 Multiple Boiler Hydronic Heating Zoned Piping...
Page 42: ...38 Figure 42 Single Boiler with DHW Tank Hydronic Heating Zoned Piping...
Page 43: ...39 PART 10 PARTS LIST...
Page 44: ...40...
Page 45: ...41...
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Page 60: ...56 PART 11 TUBING DIAGRAM...
Page 61: ...57 PART 12 WIRING DIAGRAM...
Page 62: ...58...
Page 63: ...59...