Assessments - 1, GPA: 3 ( )

Fabricante : Honeywell Arquivo Tamanho: 1.22 mb Arquivo Nome : Língua de Ensino:

A separate automatic gas shutoff device is not required in a system that uses this control to meet requirements for CSA International ANSI Z21.87 and UL 353. The overall range of the setpoint is model-dependent but is within 130°F to 240°F (54°C to 116°C). Select devices may have different ranges. Adjusting Settings or Models with “On- Board” Display To discourage unauthorized changing of settings, a procedure to enter the adjustment mode is required. To enter the adjustment mode, press the UP, DOWN, and I buttons (see Fig. 1) simultaneously for three seconds. Press and release the I button until the parameter requiring adjustment is displayed: 69-2076—01 10 S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS S9360A, S9361A, S9370A, S9371A INTEGRATED BOILER CONTROLLERS Display In the RUN mode, status items and parameters are viewable. For example, to display setpoint, the control will flash “sp” (setpoint) followed by the temperature (i.e., 135), followed by °F or °C. To read settings, press and release the I key to find the parameter of interest. For example, press and release I until setpoint (sp) is displayed, followed by a three-digit number, i.e., 220, followed by °F or °C. Pressing the I button again will display the (S1T) Sensor 1 Temperature followed by a three-digit number and the corresponding degree designator. See Display Readout, Fig. 6. DisplayText Description Shows sta Current State s1t Sensor 1 Temperature s2t Sensor 2 Temperature* sp Setpoint dff Setpoint Differential hr Heat Request Status err Error Code fla Flame Current F Degrees Fahrenheit Degrees Celsius uA Micro Amps M24052 Fig. 6. Display readout definitions. Boiler Temperature Controller When the water temperature reaches setpoint, the controller ends the heating cycle. When the water temperature drops below the setpoint minus the differential, the control restarts a heat cycle to re-heat the tank of water. If the water temperature exceeds the max allowed temperature, the control enters a manual reset lockout state. For models that have reset capability, press any onboard button (when present), cycle power, or use the remote display to reset. CHECKOUT Put the system into operation and observe operation through at least one complete cycle to make sure that the controller operates properly. See Troubleshooting section to assist in determining system operation. LOCATION AND MOUNTING Sensing Bulb(s) The water heater manufacturer usually provides a tapping for the sensing bulb at a point where average water temperature can be measured. Some water heaters use two (2) sensors, one limit rated near the center or bottom of the tank, the other non-limit rated near the top. See Fig. 7. Follow the heater manufacturer instructions. The sensing bulb can be installed in an immersion well. Wells and fittings must be ordered separately. See 680040. When an immersion well is used, the sensor should fit snugly and should touch the bottom of the well for best temperature response. U...

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