Rheem RTGH-RH10DV, Use And Care Manual, Page: 51 / 86

AP18733 REV. 3.2.17
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6. The wiring diagrams contained in this manual are to be used for reference purposes only.
7. Refer to these diagrams and the wiring diagrams of any external controls used with the installation when wiring the water heater. Read, under -
stand, and follow all wiring instructions supplied with the controls.
8. Do not disconnect the power supply when the water heater is in normal operation.
NOTE : For additional electrical protection, the use of a whole house surge protector is recommended. Damage caused by power surges is not
covered by the warranty.
NOTICE
If the water heater display does not come ON, first check the plug. Also check the electrical panel circuit breaker and reset it if necessary. If the
circuit breaker trips again, do not reset. Disconnect the plug and have a qualified technician diagnose the problem.
▪ B. DIP SWITCHES
There is one DIP switch. DIP switches 6 and 7 need to be set to OFF for the water heater to operate normally.
– Dip Switch Detail (Factory Setting Shown)
DIP SWITCH OFF ON
1 – 3 Factory Use Only Factory Use Only
4 Factory Use Only Factory Use Only
5 Gas Type LP NG
6 High Fire Normal High Fire
7 Low Fire Normal Low Fire
DIP SWITCH GROUP
Table 22 – DIP Switch Group
SYSTEM CONTROL SETTINGS
MAXIMUM FLAME DETECTING VOLTAGE 2.5V
PRE-PURGE TIME (Tp) Maximum 10 seconds, minimum 1 second
SAFETY TIME (IGNITING TIME) (Ts) 3.5 seconds
IGNITING INTERVAL TIME <10 seconds
POST-PURGE TIME (Tip) 30 seconds
OVER-HEATING 1,2,3 PROTECTION DETECTION TIME <1 seconds
TEMPERATURE SENSOR FAULT DETECTION TIME <2 seconds
# OF IGNITION ATTEMPTS (Ntl) 10
DHW SET TEMPERATURE RANGE 100°F – 140°F (38°C – 60°C)
DHW OFF TEMPERATURE
DHW Target Tempe DHW Differential Temperature 27°F (15°C)
DHW ON TEMPERATURE Below DHW Target Temperature 9°F (5°C)
DHW WATER ON MINIMUM WATER FLOW .5 gallons (2 liters) (12Hz)
DHW WATER OFF MINIMUM WATER FLOW .4 gallons (1.5 liters) (8Hz)
Figure 31 – Proper Grounding – Internal Manual Power Switch