NTI GF 200 Installation Manual

Also see for GF 200: Quick installation guide

NTI GF 200 Installation Manual Manual pdf 26 page image

& & $' &#" ! ! !+ + + + + + + * + + * + + + * * + * + + + * + * + * * + + * * * * + + + * + + * * + * + * + * * * * + + * * + * * * * + * * * * $ #(%&&"%%" *) +3.10 Configuring the applianceThe appliance is designed to operate withsecond-stage (Y2) cooling air flow rates between700 and 1450 CFM. First-stage (Y1) cooling andcirculation air flow rates are set to 70% and 50% ofsecond-stage (Y2) rates, respectively. Dependingon cooling capacity, climatic conditions, and ownerpreference, one may choose any Y2 value between700 and 1450, in increments of 50 CFM (see tablebelow). Once a value is selected (by following thesteps in 3.10.1), it will remain in solid-state memory.The default setting is ‘maximum’ (all 4 LEDs illumi-nated).The following rates apply at all operating pointswithin the prescribed external static pressure range:0 - 0.8” w.c.253.10.1 Setting air flow rates:1. Remove the front cover from the appliance2. Connect the appliance to mains power and flipthe main power switch ON3. Using the soft-touch button on the Front Panel,turn the water heater OFF4. Remove the protective cover from the controllerenclosure (4 Phillips head screws).5. Locate the push-button in the lower left corner ofthe controller enclosure (see figure below).6. Locate the 4 numbered LEDs (boxed below) thatwill indicate the air flow programming setting.a. Note the 3 unlabeled LEDs (circled below)which will remain lit or flashing throughoutthis process. These 3 are not part of theprogramming procedure.b. LED #4 (HB) will flash steadily duringnormal operation.7. Press and hold the Bootloader button for 3seconds (LED #4 will stop flashing for these seconds)then release it. This activates programming mode,where the numbered LEDs will identify which modeis currently programmed.8. Each subsequent press increases thesecond-stage (Y2) cooling air flow rate by 50 CFM, asper the table above. Once all 4 LEDs are lit(Y2 = 1450 cfm), the next press will loop back to thebeginning (Y2 = 700 cfm).9. Confirm the setting using the 4 LEDs (shown inthe figure below and the table above).10. Once the desired setting is selected, wait 10seconds. The LEDs will return to their former state,and the values will be saved as the controller exitsprogramming mode.LED #1LED #2LED #3 LED #4PUSH BUTTON