WHL-033 Rev. 1.29.16
57
LINE VOLTAGE E19
PUMP OFF
E19 indicates the line voltage frequency is
out of range. This could happen if the boiler
is being powered from a small gasoline
powered generator that is overloaded or not
functioning correctly.
Inspect power wiring to the boiler and repair as necessary.
If connected to line voltage, notify the power company.
If connected to an alternate power source such as
a generator or inverter, make sure the line voltage
frequency supplied by the device is 60 Hz.
Table 25 - Boiler Error and Fault Codes
Outdoor Sensor
(7250P-319)
Supply Temperature Sensor
(7250P-324)
Boiler Sensor
(7250P-667)
Indirect Sensor
(7350P-325)
Outside
Temperature
(
o
F)
Resistance
(ohms)
High / Low
Temp Sensor
Temp. (
o
F)
Resistance
(Ohms)
-22
171800
32
32550
-13
129800
41
25340
-4
98930
50
19870
5
76020
59
15700
14
58880
68
12490
23
45950
77
10000
32
36130
86
8059
41
28600
95
6535
50
22800
104
5330
59
18300
113
4372
68
14770
122
3605
77
12000
131
2989
86
9804
140
2490
95
8054
149
2084
104
6652
158
1753
113
5522
167
1481
176
1256
185
1070
194
915
202
786
212
667
Table 26 - Sensor Temperature Resistance
Part 12 - Maintenance
A. Procedures
Periodic maintenance should be performed once a year by a
qualified service technician to assure that all the equipment
is operating safely and efficiently. The owner should make
necessary arrangements with a qualified heating contractor
for periodic maintenance of the boiler. The installer must also
inform the owner that a lack of proper care and maintenance
of the boiler may result in a hazardous condition.
BEFORE EACH HEATING SEASON a trained and qualified
service technician should perform the inspections as per the
boiler inspection and maintenance schedule in this manual.
Failure to do so could result in death or serious injury.
The combustion chamber insulation in this product contains
ceramic fiber material. Ceramic fibers can be converted
to cristobalite in very high temperature applications. The
International Agency for Research on Cancer (IARC) has
concluded, “Crystalline silica inhaled in the form of quartz
or cristobalite from occupational sources is carcinogenic to
humans (Group 1).”
•
Avoid breathing dust and contact with skin and eyes.
•
Use a NIOSH certified dust respirator (N95). This type
of respirator is based on the OSHA requirements for
cristobalite at the time this document was written. Other
types of respirators may be needed depending on job
site conditions. Current NIOSH recommendations can
be found on the NIOSH website: http://www.cdc.gov/
niosh/homepage.html. NIOSH approved respirators,
manufacturers, and phone numbers are also listed on
this website.
•
Wear long-sleeved, loose fitting clothing, gloves, and eye
protection.
•
Apply enough water to the combustion chamber lining
to prevent dust.
•
Wash potentially contaminated clothes separately from
other clothing. Rinse clothes washer thoroughly.
NIOSH stated First Aid.
•
Eye: Irrigate immediately.
•
Breathing: Fresh air.
B. Combustion Chamber Coil Cleaning Instructions
*Before beginning this procedure, have on hand the following
items:
•
a nylon, stainless steel, or brass brush (not steel)
•
gloves and eye protection
1. Shut down the boiler by using the following steps:
a. Close the gas valve. Shut down the unit, and wait for it to
be cool to the touch.
b. Disconnect the condensate piping from the outside
connection, (not from the boiler side), so flow from
condensate reservoir can be observed.
c. Disconnect electrical connections from the gas valve, spark
electrode, flame rectification probe, and combustion blower.
d. Remove the four (4) screws on the aluminum ¾” NPT
connector on the right side of the gas valve.
e. Disconnect the wiring connected to the combustion blower
motor.
f. Remove the six (6) 10MM nuts from the burner plate
assembly.
g. Pull the entire burner plate assembly with blower still
attached towards you, while removing or pushing aside any
wiring to allow removal of the assembly.
2. Spray the coils liberally with a spray bottle filled with clear
tap water. Confine the spray to the area being cleaned. Avoid
getting the ceramic target wall wet. If the condensate system is
blocked, use a vacuum to clear it.
3. Scrub coils of any buildup with a nylon, stainless steel, or brass
brush. Do not use a steel brush. Vacuum the debris from the
coils.
Summary of Contents for WBMC**500
Page 36: ...WHL 033 Rev 1 29 16 36 Figure 27 Internal Connection Diagram ...
Page 59: ...WHL 033 Rev 1 29 16 59 Figure 32 500 Combustion System Replacement Parts Model ...
Page 60: ...WHL 033 Rev 1 29 16 60 Figure 33 850 Combustion System Replacement Parts Model ...
Page 61: ...WHL 033 Rev 1 29 16 61 Figure 34 Water Side Replacement Parts All Models ...
Page 62: ...WHL 033 Rev 1 29 16 62 Figure 35 Cabinet Replacement Parts All Models ...
