LP-551 Rev. 3.9.16
11
Figure 3 - CO Warning Label
I. Water Chemistry Requirements*
Chemical imbalance of the water supply may affect efficiency
and cause severe damage to the boiler and associated
equipment. HTP recommends having water quality
professionally analyzed to determine whether it is necessary
to install a water softener. It is important that the water
chemistry on both the domestic hot water and central heating
sides are checked before installing the boiler, as water quality
will affect the reliability of the system. In addition, operating
temperatures above 140
o
F will cause the boiler to operate
continuously, accelerating the build-up of lime scale and
possibly shortening the service life of the boiler. Failure of a
boiler due to lime scale build-up, low pH, or other chemical
imbalance IS NOT covered by the warranty.
•
Sodium less than 20 mGL
•
Water pH between 6.0 and 8.0
•
Maintain water pH between 6.0 and 8.0. Check with
litmus paper or have it chemically analyzed by water
treatment company.
•
If the pH differs from above, consult local water
treatment for treatment needed.
•
Hardness less than 7 grains
•
Consult local water treatment companies for unusually
hard water areas (above 7 grains hardness).
•
Chlorine concentration less than 100 ppm
•
Using chlorinated fresh water should be acceptable as
levels are typically less than 5 ppm.
•
Do not connect the boiler to directly heat swimming
pool or spa water.
•
Do not fill boiler or operate with water containing
chlorine in excess of 100 ppm.
*NOTE:
It is recommended to clean the heat exchanger at
least once a year to prevent lime scale buildup. To clean the
heat exchanger, follow the maintenance procedure in this
manual.
Hardness:
Less than 7 grains
Chloride levels:
Less than 100 ppm
pH levels:
6 - 8
TDS:
Less than 2000 ppm
Sodium:
Less than 20 mGL
Turn on clothes dryers and any appliances not connected to
the common venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, at maximum speed.
Do not operate a summer exhaust fan. Close all fireplace
dampers.
4. Place in operation the appliance being inspected. Follow the
lighting instructions. Adjust the thermostat so the appliance
will operate continuously.
5. Test for spillage at the draft hood relief opening after 5
minutes of main burner operation. Use the flame of a match
or candle or smoke from a cigarette.
6. After it has been determined that each appliance remaining
connected to the common venting system properly vents
when tested as outlined, return doors, windows, exhaust fans,
fireplace dampers, and any other gas burning appliances to
their previous condition of use.
7. Any improper operation of the common venting system
should be corrected to conform to the National Fuel Gas
Code, ANSI Z223.1. When resizing any portion of the common
venting system, the system should approach the minimum
size as determined using the appropriate tables in Appendix
G of ANSI Z223.1.
Summary of Contents for EP-220 VWH
Page 33: ...LP 551 Rev 3 9 16 33 Figure 24 Cascade Master and FollowerWiring ...
Page 34: ...LP 551 Rev 3 9 16 34 Figure 25 Internal Connection Diagram ...
Page 57: ...LP 551 Rev 3 9 16 57 Figure 30 Combustion System Replacement Parts 220kBTU Model ...
Page 58: ...LP 551 Rev 3 9 16 58 Figure 31 Combustion System Replacement Parts 299 399kBTU Models ...
Page 59: ...LP 551 Rev 3 9 16 59 Figure 32 Replacement Parts All Models ...
