Most Frequent Ptac Service Questions

52S

SERIES

1.	Can remote thermostats be used on standard (AA)	No, only for use on remote control (RC) models.
	models?
2.	Which remote thermostats are acceptable for use on	HH01AD045 Ð Manual changeover thermostat
	52S products?	TSTATCCPAC01 Ð Programmable AC thermostat
		TSTATCCPHP01 Ð Programmable HP thermostat
3.	How many 52S series units can be controlled by one	Only 2.
	remote thermostat?
4.	What is the vent capacity of the 52S products?	35 cfm (standalone). Capacity can be increased
		with the use of an external exhaust fan.
5.	How do the 52S series models handle condensate	By using a slinger ring to evaporate the water on
	removal?	the outdoor coil, and by using an optional acces-
		sory drain kit.
6.	At what temperature will the outdoor (defrost)	15 F coil temperature/approx 35 F ambient
	thermostat switch the unit (heat pumps only) into	(approx 40 to 45 F ambient for 1999 models).
	defrost (emergency heat) mode?
7.	Can the PTAC unit be con®gured to allow continuous	Yes. A switch located on the side of the control
	fan operation?	box is used to toggle between continuous or cycle
		fan mode.
8.	Can the discharge air grille be changed to alter the	Yes. Remove the 2 screws and ¯ip the grille over
	direction of the air¯ow?	180 degrees.

9.How does the Emergency Management (EM) accessory In series with the 24-volt control circuit (trans-

kit work?	former is ®eld-supplied) it disconnects the power
	at the front desk during unoccupied periods. The
	unit will be energized in emergency heat mode,
	provided the push button switch is selected for
	heating, if the room temperature drops below
	55° F to prevent freezing.
10. When must the accessory subbase be used?	When the wall sleeve is more than 4 in. inside
	the room. The subbase can be adjusted to a maxi-
	mum height of 51¤2 inches.
11. How does the PTAC unit prevent condensate water	A temperature-activated drain opens when the
from freezing in the basepan?	temperature drops below 45 F, draining the
	water into the sleeve to prevent freezing.
12. What does the outdoor thermostat switch do?	The toggle switch, located on the side of the con-
	trol box, prevents the compressor from energizing
	in heating mode during subfreezing conditions to
	ensure adequate heating capacity. The switch
	must be returned to the ``heat pump'' position for
	compressor operation during cooling modes.

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Carrier 52S manual Most Frequent Ptac Service Questions