Carrier 50TCQA04 Installation Instructions Manual

Also see for WeatherMaker 50TCQA07: Installation instructions Installation instructions Service and maintenance instructions

23Table 6 – DIP Switch PositionSwitch No.1 2 1 2 1 2 1 2 31 J 1 J 1 1 J J 1 J On0 J 0 J 0 J J 0 0 Off30 minutes( factory default) 60 minutes 90 minutes 120 minutes Fan DelayThe continuous run period is a fixed time period between theend of the last defrost cycle (or start of the current Heatingcycle) during which no defrost will be permitted. This periodcan be set at 30, 60, 90 or 120 minutes by changing thepositions of DIP switches SW1 and SW2 (see Fig. 33 andTable 6). The default run period is 30 minutes.a50--- 9688Fig. 33 -- DIP Switch Settings — Defrost BoardShorting the jumpers for a period of 5 to 20 secondsbypasses the remaining continuous run period and placesthe unit in a Forced Defrost mode. If the controlling DFTis closed when this mode is initiated, the unit willcomplete a normal defrost period that will terminate whenthe controlling DFT opens or the 10 minute defrost cyclelimit is reached. If the controlling DFT is open when thismode is initiated, the Defrost cycle will run for 30seconds. Both modes end at the end of the Defrost cycle.Electric Heaters50TCQ units may be equipped with field--installedaccessory electric heaters. The heaters are modular indesign, with heater frames holding open coil resistancewires strung through ceramic insulators, line--break limitswitches and a control contactor. One or two heatermodules may be used in a unit.Heater modules are installed in the compartment belowthe indoor (supply) fan outlet. Access is through theindoor access panel. Heater modules slide into thecompartment on tracks along the bottom of the heateropening. See Fig. 34 -- 36.Not all available heater modules may be used in everyunit. Use only those heater modules that are UL listed foruse in a specific size unit. Refer to the label on the unitcabinet for the list of approved heaters.Unit heaters are marked with Heater Model Numbers. Butheaters are ordered as and shipped in cartons marked witha corresponding heater Sales Package part number. SeeTable 7 for correlation between heater Model Number andSales Package part number.NOTE: The value in position 9 of the part number differsbetween the sales package part number (value is 1) and abare heater model number (value is 0).DISCONNECT MOUNTINGLOCATIONUNIT BLOCK-OFFPANELOUTDOORACCESS PANELINDOORACCESSPANELC08133Fig. 34 -- Typical Access Panel LocationDISCONNECTMOUNTINGLOCATIONEMT OR RIGID CONDUIT(FIELD-SUPPLIED)SINGLEPOINT BOXCENTERPOSTHEATERCOVERSHEATERMOUNTINGBRACKETHEATERMODULE(LOCATION 2)HEATERMODULE(LOCATION 1)SINGLE POINTBOXMOUNTINGSCREWBRACKET ANDCONDUITDRIP BOOTMAINCONTROLBOXCONTROL WIRE TERMINAL BLOCKMANUAL RESETLIMIT SWITCHC08134Fig. 35 -- Typical Component LocationTRACKFLANGEC08135Fig. 36 -- Typical Module Installation