WARM AIR OUTLET HUMIDIFIER OPEN THE DOOR AND POUR WATER INTO THE TRAY. FILTER LAMP VENT TERMINAL COMBUSTION/ EXHAUST COMBUSTION AIR INTAKE HOSE EXHAUST PIPE AIR FILTER THERMISTOR GAS CONNECTION 1/2" NPT POWER CORD PLUG 120V AC Rinnai Corporation ES38 Manual Control Panel All buttons beep when operated. Set Temp Room Temp Economy Temp Control Function Lock Filter ON/OFF ON FUNCTION LOCK Lamp is "green" when this feature is on. FILTER LAMP Flashes when filter is dirty. OPERATION LAMP This lamp turns "green" when power is on. Lamp will change to "red" when burner is on. TEMPERATURE BUTTONS " " adjust temp. to lower setting. " " adjust temp. to a higher setting. ENERGY SAVING BUTTON Lamp is "green" when this feature is activated. ..CONTROL PANEL....INDICATOR DISPLAY .. > > TEMPERATURE DISPLAY SHOWS EITHER THE TEMPERATURE OR CODED ERROR MESSAGES. ON/OFF BUTTON Easy operation One touch ignition Rinnai Corporation ES38 Manual Operating the Heater Turning the heater ON When you press and release the ON/OFF button, the Temperature Level lamps will illuminate, the combustion fan will begin to run, and the spark will ignite the main burner. This heater has an automatic ignition system. When the main burner has lit, the combustion lamp will glow red, and the spark will stop. ON/OFF If ignition does not occur after 15 seconds, the appliance will automatically turn off and the Temperature Level lamps will flash indicating a fault code. This may occur when using the appliance for the first time or if it has not been used for a while. Try operating the appliance again. There may be a smell of burning dust or oil the first time the heater is lit or when the heater has been out of operation for a long time. The appliance may make noises after ignition or when it is turned off. This is normal and is due to the thermal expansion or contraction of its components. Turning the heater OFF Press the ON/OFF button. Do not turn off by unplugging at the power outlet. The fan will continue to run for a short time to prevent the internal components from overheating. ON/OFF Adjusting the Temperature Set Temp Room Temp Temp Control Function Lock The first time that the appliance is turned on, the preset temperature of 72° F will be shown on the display. Every time the temperature setting is changed, that temperature setting will be the latest data appearing on the display the next time the appliance is turned on. To change the temperature setting, adjust the temperature control buttons until the desire setting is indicated. When the desired temperature has been set, 10 seconds later, the display will show the current room temperature. The thermostat automatically modulates the burner and the fan to maintain the temperature setting. The temperature settings available are: • LO -burner is on minimum combustion • 60° F -80° F in two degree increments • HI -burner is on maximum combustion Economy Mode Pressing the Economy button will cause the appliance to go into Economy Mode and the green lamp will glow. This results in the temperature setting being reduced by 2° F, 30 minutes after the room temperature has reached the temperature setting. After another 30 minutes the temperature setting is reduced another 2° F. This could result in the temperature setting being reduced by a maximum of 4° F. The intent of this mode is to save energy. Economy When the heater is running at the LO setting, the Economy Mode does not function. Rinnai Corporation ES38 Manual Operating the Heater Lock This feature locks the buttons to prevent unintended operation. Press the up and down buttons to activate and the lamp Function Lock will glow. Pressing and holding the up and down buttons for two seconds will disengage the Lock. Temp Control If the Lock is engaged while the unit is operating, all buttons will be disabled except for the ON/OFF button. If the Lock is engaged while the unit is off, then all buttons will be disabled. The Lock must be disengaged in order to turn the unit on. Adding Water to the Humidifier Sensible Temperature Control The sensible temperature control feature allows comfortable heating which matches the conditions in the room. Based on the information collected by the room temperature thermistor when the heating starts, the heating capacity is automatically adjusted to achieve a comfortable heating effect and to reach the temperature setting quickly. Filter Lamp If the filter lamp flashes during operation, check Filter ON the air filter for dust. If dust is present, clean the filter. See the Care and CAUTION Do not fill the tray while the appliance is in operation. Close the door after filling. The humidifier tray and surrounding area are hot when the appliance is on. Adjusting Air Flow Direction Maintenance section. Turn the heater off before cleaning the filter. To fill the tray, open the door as shown in the diagram and pour water into the tray using the spout built into CAUTION Do not adjust the air flow louvers while warm air is flowi...