whl-648 Rev. 001 Rel. 003 Date 10.8.19
15
Figure 3 - Wall Mount Model Dimensions
Description
Diameter
A
Automatic Air Vent
-
B
Air Intake Adapter
3”
C
Exhaust Vent Adapter
D
Pressure Relief Valve Adapter
3/4” NPTF
E
CH Supply Adapter
1” NPT
F
CH Return Adapter
G
DHW Outlet Adapter
3/4” NPT
H
DHW Inlet Adapter
I
Gas Inlet Adapter
J
Condensate Adapter
1/2” NPT (3/4” PVC Socket on Floor Models)
Table 9 - Adapter Specifications - All Models
Model
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
AB
AC
AD
AE
140
17.3
34
15.4
10.6
6.7
4.3
2.8
5.1
11.0
2.3
5.7
8.9
10.8
14.9
15.1
10.5
5.9
2.3
6.8
12.6
3.9
199
19.7
37
16.8
7.8
5.4
4.0
6.3
12.3
2.5
5.9
10.6
16.6
17.0
12.5
7.0
3.2
9.2
15.1
3.7
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 316L stainless
steel fire tube heat exchanger with internal aluminum is designed
to extract all available heat from the combustion process and pass
it into heat transfer fluid. The stainless steel construction provides
protection for longer service life. The heat exchanger offers greater
water content, providing lower system pressure and greater overall
system efficiency.
10 to 1 Modulating Combustion System -
The combustion
system is specially designed to provide very high turn down. This
combustion system will modulate the burner output to very low
levels to match the system demand and achieve better overall
control of the heating system for maximum efficiency and reliability.
Control –
The integrated control system monitors the system and
responds to internal and external signals to regulate fan speed and
control output. This allows the boiler to deliver only the amount of
heat energy required and nothing more.
The control can be set up to monitor outdoor temperature through
an outdoor sensor to regulate boiler set point temperature, increasing
overall system efficiency while providing great comfort.
Electronic LCD Display –
The high resolution display allows the user
to monitor boiler functions. The display also provides the means to
program the system parameters to maximize the efficiency of the
system design.
Combustion System (Blower – Gas Valve – Mixer – Burner – Spark
Ignition) –
The highly efficient spark ignition combustion system uses
a variable speed blower to adjust combustion as the system requires
more or less energy. The negative regulated gas valve provides only
the amount of fuel required to ensure clean combustion. The mixer
accurately regulates the combination of gas and air throughout the
modulating range to ensure high reliability. The burner is constructed
of durable ceramic metal fiber for long service life.
Boiler Sensors (Inlet – Outlet – Flue - Outdoor) -
Sensors provide
highly accurate temperature monitoring to assure accurate system
control. These sensor inputs can be monitored through the boiler
control system and display.
Pressure Gauge –
Allows the user to monitor system pressure.
Table 10 - Wall Mount Specifications and Dimensions
Summary of Contents for WBRC 140 Series
Page 21: ...whl 648 Rev 001 Rel 003 Date 10 8 19 21 E Applications Figure 10 Piping Symbol Legend ...
Page 40: ...whl 648 Rev 001 Rel 003 Date 10 8 19 40 Figure 33 Electrical Wiring Diagram ...
Page 41: ...whl 648 Rev 001 Rel 003 Date 10 8 19 41 Figure 34 Ladder Diagram ...
Page 81: ...whl 648 Rev 001 Rel 003 Date 10 8 19 81 Notes ...
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