Rheem RTGH Series User Manual

61
Recirculation Operation
Timer mode
The water heater is turned ON when the recirculation
pump starts operation. The water heater produces
hot water at the setting temperature. When the return
water temperature reaches approximately 15°F (8°F)
below the setting temperature, the water heater
and the pump will turn OFF. The cycle will restart
at the approximate time based on the temperature
thermistor reading.
Energy Saver mode
The Energy Saver mode operates as below:
• Less Energy consumption due to fewer pump
cycles
• Pump cycles ON Every 30 to 60 minutes
Performance mode
The Performance mode operates as below:
• Higher energy consumption due to more pump
cycles
• Pump cycles ON every 15 to 30 minutes
Mode Setting -Timer Mode-
The factory setting for the switch should all be in the
OFF position (Down).
Change the first switch on “DIP switch 2” to the ON
position (UP). Performance mode is selected.
To select Energy Saver mode, change the fourth
switch on “DIP switch 1” to the ON position (UP).
Replace the front cover panel.
Turn on all electric power to the water heater.
Setting Temp Typical Pump ON Intervals [Min]
[°F]
Performance Energy Saver
140 15 30
135 15 30
130 15 30
125 15 30
120 16 31
118 17 33
116 18 35
114 19 38
112 20 40
110 22 44
108 24 47
106 26 51
104 28 56
102 31 62
100 35 69
Actual pump ON intervals may vary based on the
setting temperature, insulation, and heat loss in the
system.
5
Recirculation Pump
Recirculation Pump Control
ON
1 2 3 4
ON
1 2 3 4
DIP 1DIP 2
ON
1 2 3 4
ON
1 2 3 4
DIP 1DIP 2
2
3
4
ON
1 2 3 4
ON
1 2 3 4
DIP
Switch
2
"MAX"
button
"ADJUST"
button
"MIN"
button
DIP
Switch
1
1
USING YOUR WATER HEATER

Rheem RTGH Series Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Ignition System	Electronic
Energy Factor	0.82 - 0.94
Vent Type	Direct Vent
Installation Location	Indoor or Outdoor
Dimensions	Varies by model
Weight	Varies by model
Warranty	12 years heat exchanger, 5 years parts