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802961 Rev. 00 

NYWC SERIES UPFLOW PACKAGED TERMINAL AIR CONDITIONERS 

Hydronic or Steam Heating and Cooling Unit 

INSTALLATION & OPERATION MANUAL 

IMPORTANT:

READ AND SAVE THESE INSTRUCTIONS. INSTALLATION AND WIRING MUST 
BE IN ACCORDANCE WITH CEC, NEC AND LOCAL ELECTRICAL CODES.

Содержание NYWC Series

Страница 1: ...PACKAGED TERMINAL AIR CONDITIONERS Hydronic or Steam Heating and Cooling Unit INSTALLATION OPERATION MANUAL IMPORTANT READ AND SAVE THESE INSTRUCTIONS INSTALLATION AND WIRING MUST BE IN ACCORDANCE WITH CEC NEC AND LOCAL ELECTRICAL CODES ...

Страница 2: ...ting coil and evaporator coil at least annually or more often as dictated by the severity of the particulates and pollutants circulating in the outdoor and indoor operating environments One suggested method is as follows Unimpeded Outdoor Airflow Do not block off the outside air flow to the unit The condenser air inlet and outlet must be free of obstructions and of any external influence that woul...

Страница 3: ...lt units are furnished with a NEMA 5 15P or 5 20P non locking plug as applicable The respective plug will require a NEMA 5 15R or 5 20R receptacle to be field provided All 277 Volt units are furnished with a NEMA 7 20P 20 Amp non locking plug and hence will require a NEMA 7 20R receptacle to be field provided Note 277 Volt units are considered to be permanently connected per the National Electrica...

Страница 4: ...not be used connect the ends blue orange of the aquastat leads together to permanently complete the aquastat circuit 6 If the unit is equipped with mechanical knob controls and touchpad this variation cannot be adapted to work with a remote thermostat Locate the 24 VAC aquatsat output connector beneath the control box A mating connector and 6 feet of wire leads are supplied to connect to an aquast...

Страница 5: ...ing diodes LEDs display the actual temperature of the air entering the unit at floor level The display can also be used to indicate the desired set point temperature for room comfort It is important to remember that the temperature displayed is the temperature sensed at the unit s indoor air inlet and can be significantly different from the bulk room temperature at a distance from the unit On Off ...

Страница 6: ...LL THERMOSTAT CONVERSION TO 24V REMOTE THERMOSTAT Except for the wall thermostat and thermostat cable everything is included with the unit to field convert a keypad operated unit to 24 Volt AC wall thermostat operation by qualified service personnel Specific conversion instructions are detailed on the wiring diagram affixed to each particular unit to be converted Conversion involves accessing the ...

Страница 7: ... a random 5 to 15 second delay before the electronic control powers up The keypad will be totally disabled once the DIP switch has been set for remote mode The unit will obey the commands from the thermostat only The thermostat will automatically maintain the temperature in the room based on the setting pre set by the user If the thermostat has only single fan speed capability a decision will need...

Страница 8: ...own for any reason a 3 minute time delay will elapse before the compressor is allowed to re start This prevents compressor overload during re start due to unequal system refrigerant pressures Indoor Coil Freeze Protection Control of frost on the evaporator coil due to low indoor loads or cold outdoor ambient temperatures is provided The protection remains active when the unit is OFF for either key...

Страница 9: ...screws with washers in Standard Position see Fig 1 This allows a wide range of thermostat rotation representing a range of temperatures between approximately 18 C and 29 C 65ºF and 85ºF The left screw in Standard Position can be removed and re inserted in four alternate holes moving in a clockwise direction in order to reduce the maximum allowable set point temperature for heating Similarly the ri...

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