Standard Features - Northwind MAC1211 Engineering, Installation And Service Manual

INSTALLATION GUIDELINES:
This manual is used for guidance and does not form part of a contract. NorthWind, Inc. reserves the right to make
technical changes without prior notice.
1. Always place the unit on a level surface.
2. The unit shall be installed in accordance with national and local wiring regulations.
3. The unit must be connected to a correctly grounded power supply. For safety, this air conditioner is grounded
through the power cord plug when connected to a grounded wall outlet. Do not use an adapter plug or improperly
sized extension cord.
4. Do not install the unit in an area where gas leakage may occur and/or in an explosive atmosphere.
5. Do not apply an insecticide or any type of flammable spray on the unit.
6. Do not start or stop the unit by inserting or pulling out the power plug.
7. The unit is not intended for use by children. Close supervision is necessary if unit is operated near children.
8. Do not insert anything into air inlet or outlet grilles.
9. Do not obstruct air inlet or outlet grilles.
10. If an abnormal odor or smoke comes out of the unit, disconnect the unit immediately and contact a qualified
service technician.
1. Do not immerse the unit in water or any type of liquid.
2. Do not put a stove/grille, etc, where it would be exposed to the direct airflow. It may affect combustion.
3. Do not sit on the unit or place anything on it.
4. Always inspect the power cord for signs of damage before use. If the power cord is damaged, it must be replaced
by the manufacturer or a qualified service technician.
INSTALLATION 1 - 2 - 3
1) Position the unit in the desired location. Make sure that the condenser inlet air grille is not blocked or obstructed
(left side of the unit). Leave at least 8 inches of clearance for proper air flow.
2) Apply the brakes on the front casters to keep unit from rolling or moving out of position.
3) Plug power supply cord into proper receptacle. The green "Power Ready" light should be lit. Push power switch
to "on" position. Turn thermostat dial clockwise (right), to desired comfort number; the unit will start. Rapid turn-
ing of the dial back and forth (short cycling) will activate the unit's compressor time delay. The unit will not start
until the time delay period (5 minutes) has passed. This safety feature protects the compressor from damage.
SERVICEABILITY
All NorthWind units are designed with "corner post" construction. This permits convenient access to most components
by removal of the right side panel(s) (viewed from the front). A separate electrical control box is located on the lower
back panel. For easy access to the control components, simply remove 4 screws. The power supply cord can be stored
in the cord storage compartment on the back panel. All panels are attached with machine screws into threaded fasteners.
The unit interior consists of three sections: 1) The lower section containing the compressor, condensate removal
system and primary electrical system, 2) The upper front section, containing the evaporator blower, coil, filter and
grilles, 3) The upper rear section, containing the condenser blower, coil filter and grilles.
COMMERCIAL CABINET
The "corner post" construction provides great strength and virtually no "cabinet flex". Base pans, corner posts and se-
lect interior panels are 12 gauge galvanized steel on models MAC1211/1811 and 11 gauge on models MAC60 and
MAC90.. The exterior panels are 18 gauge CRS finished with exterior grade, weather resistant, high gloss, polyester
TGIC powder coating. The interior sections are insulated with sound absorbent insulation for quiet and dry operation. A
"Cord Storage Compartment" is located on the back panel near the electric service panel. It provides a convenient place
to protect and store the power supply cord during transport. It also serves to protect and house the fan cycle switch and
high pressure switch reset button on models MAC1211/1811.
THERMOSTATIC EXPANSION VALVE/CAPILLARY TUBE
NorthWind units are equipped with either a thermostatic expansion valve or capillary tube expansion system. Both ac-
curately and efficiently control refrigerant flow.

STANDARD FEATURES

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