Burnham K2WT Residential Installation, Operating And Service Instructions page 121

XII. Operation
F. Changing Adjustable Parameters (continued)
Example Pump Parameter selections:
Single boiler with no Indirect Water Heater
To
System
Flow
Check Optional
Full Port
Isolation
Valves
Heating
Circulators
Optional
Full Port
Isolation
Valves
To
System
Heating
System
System
Circulator
Zone
Valves
Single boiler Indirect Water Heater (IWH)Piped to Primary, Optional Domestic Hot Water Priority.
107672-03 - 5/18
Hydraulic Separator
May Be Substituted
For Tees
Close Nipple
(Locate Header Sensor
As Close As Possible
To Downstream Tee)
Air Separator
& Air Vent
Expansion Tank
Fill Valve
Backflow
Preventer
From
System
Y-Strainer
(Recommended)
Header Temperature
Sensor Boiler
(When Used)
Pump
Drain
Valve
Full Port
Isolation
Valves
Relief
Valve
Parameter Selection:
System pump = "Central Heat,
Boiler pump = "any demand"
DHW pump = "never"
Tee & Plug
(Recommended For Future
Heat Exchanger Service)
Unions
Explanation:
This piping arrangement only
services central heat. When
there is any demand both
boiler and system pumps turn
on.
Parameter Selections:
System Pump = "Central Heat,
Optional Priority"
Boiler Pump = "any demand"
DHW Pump = "Primary Loop Piped IWH"
DHW Priority Enable is optional
Explanation:
This piping arrangement permits the
system pump to run or not run when there
is a domestic hot water call for heat.
Domestic hot water priority is optional.
It is permissible for the domestic and
system pumps to run at the same time.
The boiler pump must run for every call
for heat.
Optional Priority"
121