Freeze Protection; Scalding; High Elevation Installations - Westinghouse WGRT 150 Series Installation Start-Up Maintenance Parts

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
Total Hardness
(Residential Use - Below 140
temperature)
Total Hardness
o
(Commercial Use - 140 F and above
water temperature)
Aluminum
Chloride
Copper
Iron
Table 2 – Water Chemistry Specifications
F. FREEZE PROTECTION
Consider water heater piping and installation when determining water heater location.
NOTE: Damages resulting from incorrect installation or from use of products not approved by Westinghouse ARE NOT covered by
warranty.
APPROXIMATE TIME / TEMPERATURE RELATIONSHIPS IN SCALDS
o
120 F
o
125 F
o
130 F
o
135 F
o
140 F
o
145 F
o
150 F
o
155 F
Table 3 – Time and Temperature Relationship in Scalds
G. SCALDING
This heater can deliver scalding water. Be careful whenever using hot water to avoid
scalding injury. Certain appliances, such as dishwashers and automatic clothes washers
may require increased water temperature. By setting the thermostat on this heater to obtain
the increased water temperature required by these appliances, you may create the potential
for scald injury.
To protect against injury, you should install a mixing valve in the water system. This valve
will reduce point of discharge temperature by mixing cold and hot water in branch supply
lines. Such valves are available from your local plumbing supplier.
Table 3 details the relationship of water temperature and time with regard to scald injury and
may be used as a guide in determining the safest water temperature for your applications.
H. HIGH ELEVATION INSTALLATIONS
Natural gas at high elevation might contain less heating value than typical 1,000 BTU/cu ft and therefore can cause improper air / gas
mix leading to improper combustion. For natural gas installations above 3,000 ft, call your gas provider to determine the heating value
of the supplied natural gas.
Maximum Allowable Level
200 mg/l
o
F water
(12 grains/gallon)
120 mg/l
(7 grains/gallon)
0.05 to 0.2 mg/l or PPM
100 mg/l or PPM
1 mg/l or PPM
0.3 mg/l or PPM
More than 5 minutes
1 ½ to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1 ½ seconds
About 1 second
Contaminant
Manganese
pH
Sulfate
Total Dissolved Solids (TDS)
Zinc
Dissolved Carbon Dioxide
(CO2)
Maximum Allowable Level
0.05 mg/l or PPM
6.5-8.5
205 mg/l or PPM
500 mg/l or PPM
5 mg/l or PPM
15 mg/l or PPM
WHL-004 REV. 5.26.17
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