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Manafacture: Lochinvar File size: 550.11 kb File name: 24eccce0-7bcf-47a8-bb1b-7963a507380d.pdf Language of manual:

SEE FIGURE 3 FOR CONNECTION DIAGRAM). FOR STANDARD TANK CONTROLS (e.g., 24 VAC HONEYWELL AQUASTAT) REMOVE THIS JUMPER AND CONNECT THE CONTROL TO THE BROWN WIRES IN THE JUNCTION BOX ON THE BACK OF THE BOILER. Figure 2. WHC 1502 Ignition Control Board DANGER HOT WATER TEMPERATURES REQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CAN CAUSE SCALD BURNS RESULTING IN SERIOUS PERSONAL INJURY AND/ OR DEATH. THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON'S AGE AND TIME OF EXPOSURE. THE SLOWER RESPONSE TIME OF DISABLED PERSONS INCREASES THE HAZARDS TO THEM. NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER TAP, OR TO DRAW THEIR OWN BATH WATER. NEVER LEAVE A CHILD OR DISABLED PERSON UNATTENDED IN A BATHTUB OR SHOWER. THE WATER HEATER SHOULD BE LOCATED IN AN AREA WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS TO SET TEMPERATURES. It is recommended that lower water temperatures be used to avoid the risk of scalding. It is further recommended, in all cases, that the water temperature be set for the lowest temperature which satisfies the user's hot water needs. This will also provide the most energy efficient operation of the water heater and minimize scale formation. SETTING THE WATER HEATER TEMPERATURE AT 120°F WILL REDUCE THE RISK OF SCALDS. Some states require settings at specific lower temperatures. Table 1 below shows the approximate time-to-burn relationship for normal adult skin. Table 1: Risk of Scalds Temperature Time to Produce 2nd & 3rd Setting Degree Burns on Adult Skin Over 170°F Nearly instantaneous 160°F About 1/2 second 150°F About 1-1/2 seconds 140°F Less than 5 seconds 130°F About 30 seconds 120°F or less More than 5 minutes TROUBLESHOOTING IGNITION SYSTEM Display Board LED Indicators The Display Board contains eleven (11) solid state LED indicators for viewing various states of appliance operation and for troubleshooting if problems occur. Under normal operating conditions, the appropriate LED’s will sequence with steady illumination according to the particular appliance operating state. In cases where problems or a lockout occurs, the appropriate LED’s will illuminate indicating the general area where the problem exists. A description of the LED’s and their corresponding functions are as follows. LED Controller Function Call for Heat Flow Switch Monitors Outlet water temperature minus Switching Differential and thermostat circuit or tank probe circuit. LED is ON when the temperature at Outlet Water Probe is less than the set-point minus the switching differential, and the thermostat circuit or tank probe circuit is closed. Monitors the condition of the flow switch. LED Pressure Switch is ON when the flow switch closes, indicating water flow through the system. Monitors the condition of the pressure switch(s). LED is ON when the pressure switch(s) are in their correct state. Ignitor Current Monitors current flow through the ignitor element. LED is ON when current flow through the ignitor is sensed. Gas Valve Flame Sense Monitors G...

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