Installation Guide

WHL-648 Rev. 000 Rel. 002 Date 1.3.18
58
Figure 53 - Flame Sight Glass
Part 11 - Start-Up
A. Check / Control Water Chemistry
Chemical imbalance of the water supply may aect eciency and
cause severe damage to the appliance and associated equipment. It
is important that the water chemistry on both the domestic hot water
and central heating sides are checked before installing the appliance.
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 aect 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 ush any system that has used glycol before
installing the appliance. Provide the customer with a material safety
data sheet (MSDS) on the uid used.
To ensure extended service life, it is recommended to test water quality
prior to installation. Listed below are some guidelines.
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 dened 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.
B. Check for Gas Leaks
Before starting the appliance, and during initial operation, smell
near the oor and around the appliance for gas odorant or any
unusual odor. Remove appliance front door and smell interior of
appliance enclosure. Do not proceed with startup if there is any
indication of a gas leak. Repair any leaks at once.
PROPANE Appliances 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.
*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.
Clean system to remove sediment*
1. You must thoroughly ush the system (without appliance
connected) to remove sediment. The high-eciency heat exchanger
can be damaged by buildup or corrosion due to sediment.
2. For zoned systems, ush each zone separately through a purge
valve. (If purge valves and isolation valves are not already installed,
install them to properly clean the system.)
3. Check return Y strainer (if installed). Remove and clean sediment
and debris if necessary.
4. Flush system until water runs clean and you are sure piping is free
of sediment.
NOTE: Appliance failure due to improper water chemistry is not
covered by warranty.
Table 34 - Water Quality Specications
If you discover any evidence of a gas leak, shut down the
appliance at once. Find the leak source with a bubble test and
repair immediately. Do not start the appliance again until the leak
is repaired. Failure to comply could result in substantial property
damage, severe personal injury, or death.
Do not use petroleum-based cleaning or sealing compounds in the
appliance system. Damage to elastomer seals and gaskets in the
system could occur, resulting in substantial property damage.
Contaminant Maximum Allowable Level
Total Hardness
(Residential Use - Below 140
o
F
water temperature)
200 mg/l
(12 grains/gallon)
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