Noritz GQ-C2857WS US Owner's Manual page 13

Condensing tankless gas water heater
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2
Set temperature.
(
Always check the
temperature setting
before use.
Hot
Cold
Check the indicator lights.
Water temperature
When using °F mode:
(
°F :
The temperature settings below are examples. The temperature setting
necessary depends on the usage, the length of piping and the time of year.
115
Shower, hot water supply, etc.
When using °C mode:
(
°C (°F) :
The temperature settings below are examples. The temperature setting
necessary depends on the usage, the length of piping and the time of year.
46
(115)
Shower, hot water supply, etc.
If fixtures incorporate mixing valves, set the temperature higher than usual.
* For most residential applications, the recommended setting temperature is 120°F (50°C in °C mode) or less.
* Consult local codes for minimum operating temperatures.
Note : An error code will be displayed when this water heater detects scale build-up in the heat exchanger.
The error code may be more frequently displayed when the unit is set to a high temperature. (125°F or higher)
Noritz recommends that water temperature is set as low as possible to prevent scale build-up in
the heat exchanger.
3
Turn on hot
)
water.
The maximum output temperature can be set using the remote controller. (page 17)
120
125
47
48
(117)
(118)
On
)
130
135
High temperature
*Initial factory setting is 115°F
The maximum output temperature
can be set using the remote
)
controller. (page 17)
50
55
(122)
(131)
High temperature
*Initial factory setting is 46°C (115°F)
4
Turn off the hot
water.
Off
140
60
(140)
13

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