Freeze Protection; Scalding - Westinghouse WGRGH**199 Series Installation, Start-Up, Maintenance, Parts, Warranty

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.
The water heater control is equipped with freeze protection that activates based on internal water temperature. See the table below for
details on freeze protection operation.
NOTE: Freeze protection will not be active if the water heater loses power.
System Freeze Protection Mode
(Activates Based on Internal Water
Temperature)
Table 3 – Freeze Protection Detail
G. SCALDING
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 4 – Time and Temperature Relationship in Scalds
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 4 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.
Stage 1 – If control detects water temperature of 46
On for 600s and Off for 30s. This cycle repeats until the control detects return water temperature of 50
Stage 2 – If control detects water temperature of 41
o o
temperature of 104 F (40 C). The burner and internal and external pumps will run continuously during this stage
until the control detects return water temperature of 104
Stage 3 - If control detects water temperature of 34
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
Freeze Protection Operation
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F (8 C) and below, it turns the internal and external pumps
and above.
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F (5 C) and below, it turns the burner on to meet a target
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F (1 C) and below, Er: 85 will appear on the display.
o
F (10
o o
F (40 C) and above.
WHL-060 REV. 1.6.16
9
o
C)