National Comfort Products CPG41838-U, Instruction Manual

Page: 56 / 80

56
Chassis (Cooling Section)
Transformer
The transformer is used to supply low voltage to the Comfort Pack control circuit. Its primary
side must be supplied with 208/240 VAC and its secondary side supplies 24 VAC. It is rated at
40 VA.
Failure to adjust the transformer in 208 Volt applications will then change low voltage output
and can affect low voltage components in the unit.
LINE VOLTAGE INPUT (FACTORY SET FOR 240V) MUST BE FIELD ADJUSTED FOR PROPER
LOW VOLTAGE OUTPUT.
Drainage
(See Page 38 for Furnace Drainage)
A drain pan is positioned underneath the evaporator coil to collect condensate. A ¾” flexible
tube included with the unit should be connected to the drain connection on the drain pan so it
can be easily disconnected for chassis removal.
A 2” deep trap should be installed close to the pan.
BUSS
CONNECTIO
N
BUSS
CONNECT
N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N
IO
SECONDARY DRAIN TRAP
MUST BE INSTALLED
Drain Pan
3/4” I.D. Flexible Tubing Included
2”
min.
Pitch Downward 1” per 10ft.
Shaded Area Represents Components
Provided and Installed By Others
Highest Point Must Not Be Above
Bottom of Drain Pan
3/4” O.D. Drain Connection
(Primary Drain)