WHL-052 Rev. 4.28.16
7
•
Indirect Sensor (7250p-325)
•
Outdoor Sensor (7250P-319)
•
Intake PVC Tee with Screens
•
Exhaust PVC Coupling with Screens
•
Outlet Combination Fitting (80/110/150/220 Models
- 7450P-134, 299/301 Models - 7450P-135, 399 Model -
7450P-136)
•
Installation Manual and Warranty
•
CSD-1 Form
•
H-3 Data Sheet
B. How the Boiler Operates
Condensing technology intelligently delivers hydronic heating
while maximizing efficiency. Outlined below are the features
of the system and how they operate:
Stainless Steel Heat Exchanger
The highly efficient stainless steel heat exchanger is designed
to extract all available heat from the supply line before it is
exhausted.
Modulating Combustion System
The combustion system modulates the output of the burner
during operation to match system demand and achieve
the control set point while in operation. The set point can
change by internal or external signals to enhance the overall
performance of the system.
Control
The integrated control system monitors the system and
regulates fan speed to control boiler output. This allows the
boiler to deliver only the amount of heat energy required and
nothing more.
The control can be set to monitor outdoor temperature
through an outdoor sensor to regulate boiler set point. The
system can be further enhanced by installing an indirect water
heater to provide domestic hot water.
The control can regulate the output of multiple boilers
through its cascade system function. The cascade system is
capable of connecting up to eight boilers together in such a
way that they function as one boiler system. This allows for
greater turn down ratios and provides systematic control of
the multiple boilers in an installation to minimize downtime
and maximize efficiency.
The cascade system works by establishing one boiler as the
master and the other connected boilers as followers. The
master boiler requires a sensor to provide feedback on set
point temperature in order to adjust heating input from the
connected boilers. Each cascaded boiler will have its own
pump to provide maximum flow and control heat exchanger
flow rate.
Text Display and Operational LED Light Indicators
The display allows the user to change system parameters and
monitor system outputs.
Gas Valve
Senses suction from the blower, allowing gas to flow only if
powered and combustion air is flowing.
All Metal Integrated Venturi
Controls air and gas flow into the burner.
Burner
The high grade stainless steel burner uses premixed air and
gas to provide a wide range of firing rates.
Spark Ignition
The burner is ignited by applying high voltage through the
system spark electrode. The spark from the electrode ignites
mixed gas off of the burner.
Supply Water Temperature Sensor
This sensor monitors the boiler outlet water temperature
(System Supply). The control adjusts boiler firing rate so the
supply temperature will match the boiler set point.
Return Water Temperature Sensor
This sensor monitors boiler return water temperature (System
Return).
Flue Sensor
Monitors flue temperature and adjusts firing rate.
Temperature and Pressure Gauge
Allows the user to monitor system temperature and pressure.
Electrical field connections with terminal strips
The electrical cover allows easy access to the clearly marked line
voltage and low voltage terminal strips to facilitate wiring the
boiler.
Condensate Collection System
This boiler is a high efficiency appliance and will produce
condensate. The condensate collection system has a float
which monitors condensate level and prevents condensate from
backing up into the combustion system. Inside the collection
system is a built in trap which seals the combustion system from
the connected drain. This condensate should be neutralized to
avoid damage to the drainage system or piping.
Outdoor Sensor
Monitors outdoor temperature and adjusts unit set point to
provide greater efficiency.
0-10 Volt Input
Allows the installer to connect a BMS (Building Management
System) to control the boiler.
Condensate Flue Check System
The check system prevents heat exchanger exhaust from
backing up into the cabinet.
Pump Service Mode
Allows manual operation of pumps to commission system and
check pump operation.
The Vision II System (Optional)
Allows the user to supply mixed temperatures in up to eight
zones. The Vision II system controls the temperature to each
zone by employing three way mixing valves. The Vision II also
controls the output temperature of the boiler to assure accurate
temperature delivery to all connected zones.
C. Optional Equipment
Optional equipment available from Westinghouse (and Part #):
•
Wall Mount Bracket (7450P-211)
•
System Sensor (7700P-073)
•
Indirect Sensor (7250P-325)
•
3” Stainless Steel Vent Termination Kit (V1000)
•
4” Stainless Steel Vent Termination Kit (V2000)
•
6” Stainless Steel Vent Termination Kit (V3000)
•
2” PVC Concentric Vent Kit (KGAVT0501CVT)
•
3” PVC Concentric Vent Kit (KGAVT0601CVT)
•
3” Polypro Vent Kit (8400P-001)
•
3” Polypro Pipe
(33’ length # 8400P-002, 49.5’ length # 8400P-003)
•
Low Water Cut-Off Kit (7450P-904)
•
Manual Reset High Limit (7450P-910)
•
Alarm System (to monitor any failure) (7350P-602)
•
928 PC Connection Kit with Software (7450P-330)
Summary of Contents for WBRE110
Page 13: ...WHL 052 Rev 4 28 16 13 Figure 5 Boiler Dimensions NOTE All Dimensions Are Approximate ...
Page 37: ...WHL 052 Rev 4 28 16 37 Figure 25 Internal Connection Diagram ...
Page 62: ...WHL 052 Rev 4 28 16 62 Figure 30 Combustion System Replacement Parts 80 220kBTU Models ...
Page 63: ...WHL 052 Rev 4 28 16 63 Figure 31 Combustion System Replacement Parts 299 399kBTU Models ...
Page 64: ...WHL 052 Rev 4 28 16 64 Figure 32 Cabinet Replacement Parts All Models ...
Page 65: ...WHL 052 Rev 4 28 16 65 Figure 33 Cabinet Replacement Parts All Models ...
