Burnham K2WT Residential Installation, Operating And Service Instructions page 122

XII. Operation
F. Changing Adjustable Parameters (continued)
Example Pump Parameter selections (continued):
Single Boiler with Supply Piped IWH, System and DHW Wired to Master
To
System
Flow
Check
Optional
Full Port
Isolation
Valves
Heating
Circulators
Optional
Full Port
Isolation
Valves
To
System
Heating
System
System
Circulator
Zone
Valves
Indirect Domestic
Water Heater
(IWH)
122
Hydraulic Separator
May Be Substituted
For Tees
Close Nipple
(Locate Header Sensor
As Close As Possible
To Downstream Tee)
Air Separator
Header Temperature
& Air Vent
(When Used)
Expansion Tank
Backflow
Preventer
Cold
Water
Fill Line
Valve
Indirect
Supply
Indirect
Return
From
System
Y-Strainer
(Recommended)
Boiler
Sensor Pump
Drain
Valve
Tee & Plug
(Recommended For Future
Heat Exchanger Service)
Unions
Full Port
Isolation
Valves
Flow
Check
Full Port
Isolation
Valves
Indirect
Circulator
Notes:
1. Boiler Pump Located Inside Boiler Jacket.
2. Manual Air Vent Located On Top Of Heat Exchanger.
See Figure 11.1.
CAUTION
It is the installer's responsibility to select boiler
piping configurations that provide the proper
flow rates and performance for the boiler and
indirect water heater.
Parameter Selections:
System Pump = "Central Heat,
Relief
Optional Priority"
Valve
Boiler Pump = "any demand"
DHW Pump = "Primary Loop Piped IWH"
DHW Priority Enable is optional
Explanation:
When call for Domestic Hot Water is
received the DHW pump is turned on and
the boiler pump is turned on. 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.
107672-03 - 5/18