Classic 20 ACU Installation, Operating & Maintenance Manual
AC-2 CS020020 USACG-6 Manual Rev B Page 7 of 16
4.3 Gasket installation
4.4 Installation and Connections
The enclosure shall be checked for correctness of cutouts, mounting holes and electrical supply.
Install the gaskets as shown in section 4.3. A gasket kit is provided with each unit.
Utilize an appropriate and safe lifting device.
Mount the Air Conditioner to the cabinet using hardware supplied with unit. (8 ¼-20screws, 8 flat
washers & 8 lock washers). Custom air conditioner may require different size of bolts and washers.
The maximum torque is 130 in-lbs with a recommended assembly torque of 75 in-lbs.
Connect the Air Conditioning Unit power lead to the mains supply located in the cabinet/enclosure.
Refer to the product label on the bottom right hand side panel of the unit for the proper voltage/amp
requirement. Make sure a properly grounded power supply is used. All installations are to be
completed in accordance with local NEC codes and guidelines.
The electrical circuit should be protected by a slow blow breaker or fuse of suitable rating.
The alarm is a Form C type relay (50 VDC / 0.1A Max). The connections for alarm are the red
(Common), black (Normally open) and white (Normally closed) wires only. The green wire is not used.
If the interconnect function is to be used, connect the black and red wires on the small two wire
interconnect cable to the corresponding interconnect cable supplied with each unit. Contact Dantherm
for additional information.
The Air Conditioning Unit is supplied with a condensate drain hose. Secure the hose to the drain nipple
and route away to suitable position/location.
4.5 Unit Operation
Turn the main power on to unit, the evaporator fan (internal circuit) should run immediately.
Functionality may be verified by initiating “TEST” sequence located in section 5.5.2 of this manual.
Access the controller by removing the unit front cover.
Check for the following:
Airflow through both condenser and evaporator
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