Armstrong World Industries 183, 243, 302, 242, 122, 123, 203, 182 manual Minimum Circuit Ampacity

INSTALLATION Magic-Pak: HW/HWC

6-12

See Table 6-3 and the Specifications section beginning on page 1-1 for correct wire ampacity for the cooling chassis required, and size the wire accordingly.

For HW (heating only units): When sizing wire, keep in mind that an air conditioning chassis may be added in the future.

TABLE 6-3	Minimum Circuit Ampacity
Clg. Chassis Model		Min. Circuit Ampacity
	18A	16
	24A	24
	30A	27
	181	13.3
	241	21
	301	23.6
122, 123		8.3
182, 183		13.6 Rotary/15.4 Scroll
242, 243		18.6
302, 303		22.4

Thermostat

Install the thermostat according to the directions furnished with it. The thermostat must be located on an inside wall where it will not be affected by drafts, sunlight or any other heat producing appliances. Connect the thermostat wires to the low voltage leads on top of the unit following the wiring diagram attached to the unit. The heat anticipator setting is 0.50 Amp.

Supply and Return Ducts

Provide ducts sized sufficiently to handle the larger of the air volumes for heating or cooling provided by the unit.

Connect the supply duct to the top of the unit using canvas connections or other flexible connections to prevent noise transmission into the duct system.

The supply duct should have a removable access panel. The opening should be accessible when the furnace is installed and should be large enough and located such that the heat exchanger can be inspected for leaks. The cover must be attached in such a manner as to prevent air leaks.

To connect the return duct to the system, use a straight piece of duct 22"
wide by 6" deep. Insert the duct into the return opening in the bottom of	SRM-
the unit and flange the duct over the existing flanges around the opening
	HW/HWC

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