HTP CGH-199O Series, Установка, Запуск, Обслуживание, Запасные Части и Гарантия, Страница: 46 / 60

lp-673 Rev. 000 Rel. 001 Date 8.30.18
46
Table 31 - Diagnostics and Suggested Corrective Actions
Part 11 - Start-Up
A. Check / Control Water Chemistry
Chemical imbalance of the water supply may affect efficiency and
cause severe damage to the appliance and associated equipment.
Water quality must be professionally analyzed to determine whether
it is necessary to treat the water. Various solutions are available to
adjust water quality. Adverse water quality will affect the reliability
of the system. In addition, operating temperatures above 135
o
F will
accelerate the build-up of lime scale and possibly shorten appliance
service life. Failure of an appliance due to lime scale build-up, low
pH, or other chemical imbalance IS NOT covered by the warranty.
Thoroughly clean and flush any system before installing the water
heater.
The water must be potable, free of corrosive chemicals, sand, dirt,
and other contaminates. It is up to the installer to ensure the water
does not contain corrosive chemicals or elements that can damage
the heat exchanger. Potable water is defined as drinkable water
supplied from utility or well water in compliance with EPA secondary
maximum contaminant levels (40 CFR Part 143.3). If the water contains
contaminants higher than outlined by the EPA, water treatment is
recommended and additional, more frequent maintenance may be
required. See Table 1.
If you suspect that your water is contaminated in any way, discontinue
use of the appliance and contact an authorized technician or licensed
professional.
Contaminant Maximum Allowable Level
Total Hardness
(Commercial Use - Above 140
o
F
water temperature)
120 mg/l
(7 grains/gallon)
Aluminum 0.05 to 0.2 mg/l or PPM
Chloride 100 mg/l or PPM
Copper 1 mg/l or PPM
Iron 0.3 mg/l or PPM
Manganese 0.05 mg/l or PPM
pH 6.5 - 8.5
Sulfate 205 mg/l or PPM
Total Dissolved Solids (TDS) 500 mg/l or PPM
Zinc 5 mg/l or PPM
Dissolved Carbon Dioxide (CO2) 15 mg/l or PPM
Table 32 - Water Quality Specifications
*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.
B. Check for Gas Leaks
Before starting the water heater, and during initial operation,
smell near the floor and around the water heater for gas odorant
or any unusual odor. Remove water heater front door and smell
interior of water heater enclosure. Do not proceed with startup if
there is any indication of a gas leak. Repair any leaks at once.
PROPANE WATER HEATERS ONLY – The propane supplier mixes
an odorant with the propane to make its presence detectable. In
some instances the odorant can fade, and the gas may no longer
have an odor. Before startup (and periodically thereafter), have
the propane supplier verify the correct odorant level in the gas.
C. Fill and Test Water System
If you discover any evidence of a gas leak, shut down the water
heater at once. Find the leak source with a bubble test and repair
immediately. Do not start the water heater again until the leak is
repaired. Failure to comply could result in substantial property
damage, severe personal injury, or death.
D. Condensate Removal
1. The water heater is a high efficiency condensing water heater.
Therefore, the unit has a condensate drain. Condensate fluid is
nothing more than water vapor, derived from combustion products,
similar to that produced by an automobile when it is initially started.
The water heater must be full of water and the system fully purged
BEFORE powering the water heater. When filling the water heater,
open a hot water tap to release air in the water heater and piping.
All air has been purged from the system when water runs freely
from the faucets.
Applying power to the water heater when it is not full of water will
damage the heat exchanger, and could result in property damage,
serious personal injury, or death. Such damages ARE NOT covered
by water heater warranty.
• Ensure any drain valves are completely closed.
• Open the shut-off valve in the cold water supply line.
• Open the hot water faucets to allow air to vent from the
heater and piping.
• Allow sufficient time for the heater to completely fill with
water.
Display Condition Diagnostic Possible Corrective Actions
Nothing appears
on the display
control panel, but
the water heater is
operating
Occurs when
communication is
lost from the control
to the display
Check for loose connections and proper pin
alignment / engagement on the control’s
plug
Check for continuity on the wire harness from
the display to the control. See repair parts sec-
tion for proper replacement part.
Cycle power off and on using water heater
power switch and check for operation
Replace with new display module. See
replacement parts section for part number.
Display repeatedly
cycles initialization
sequence
Occurs when control
does not receive
signal from fan
Cycle power off and on using appliance
power switch and check for operation
Replace fan
Clean system to remove sediment*
1. You must thoroughly flush the system (without water heater
connected) to remove sediment. The high-efficiency heat exchanger
can be damaged by buildup or corrosion due to sediment.
2. Flush system until water runs clean and you are sure piping is free
of sediment.
NOTE: Water heater failure due to improper water chemistry is
not covered by warranty.