Special Features - Friedrich Hazardgard SH20N50AT Installation & Operation Manual

Hazardgard Special Features
Permanent Split-Capacitor, totally enclosed fan motor to
assure operation even under adverse electrical
conditions. Motor has a special stainless steel shaft to resist
corrosion and a hermetically sealed overload for arc-free
operation.
High capacity compressorwith internal hermetically sealed
overload.
Contains transient voltage suppressor to protect controls
against transient voltage spikes. Provides solid state
switches for arc-free operation.
Hot gas bypass low ambient control to permit operation
without freezing at outdoor ambient temperatures as low as
45°F (7°C).
IP4X Environmentally sealed electrical components protect
against ingress of moisture ( ATEX & IECEx )
Polyester powder
Friedrich Air Conditioning quality has been proven by more than 30 years of successful experience from the Gulf of Mexico to
the searing sands of the Arabian desert.
Control Panel
Function Control (Power)
This switch is a double pole, single throw toggle switch.
On - Turns everything on.
WARNING
Temperature Control
The knob at the bottom is the thermostat which is a cross ambient
type used to maintain the desired comfort level. The thermostat
reacts only to a change in temperature at the bulb location - turn
the knob clockwise to set cooler, counterclockwise for warmer.
designed to cool living quarters and other enclosures situated in
gases are handled or used with enclosed containers or systems.
Friedrich Hazardgard room air conditioners are designed to meet the
National Electrical Code, Article 500 requirements for Class I, Division
2, Groups A,B,C,D Hazardous locations, CERTIFIED BY UNDERWRITERS
LABORATORIES FOR USE IN CLASS 1, DIVISION 2, GROUPS A,B,C,D
HAZARDOUS LOCATIONS.
oven-baked for an attractive, long-
POWER MUST BE DISCONNECTED AT CIRCUIT
BREAKER/FUSE BEFORE SERVICING!
Galvanized steel cabinet and base pan, all bonderized.
Slide-out chassis for easy installation in window or
through–the–wall.
Extra insulation inside, including completely insulated
Entire unit test run in environmental chamber before crating.
Condensate drain with exclusive mosquito trap.
1 a 5 m p r o 2 a 0 m p r i c u c t i
Accommodates direct wiring.
Long lasting 3/8" (10 mm) thick air
treated, easily removed for cleaning.
i w h t i t m e d - l e y a u f e s e r q i u e r
germicidally
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