![background image](http://html1.mh-extra.com/html/carrier/airstream-42wkn/airstream-42wkn_installation-operation-and-maintenance-instructions_2562632027.webp)
27
Fig. 31 — 42WKN Unit 2-Pipe System with Heating/Cooling Changeover, Aquastat, and Electro-Mechanical
Control Wiring Diagram, Sizes 33 and 36
AL
—
Alarm Relay
AWG
—
American Wire Gage
CPM
—
Condensate Pump
VM
—
Vane Motor
VR
—
Valve Relay
Factory-Installed
Field-Installed
Terminal Block
Component Terminal
Connected Path
1
LEGEND
NOTE: Fan is wired to medium speed as a default. To change the default
fan speed, adjust wiring in the field. Factory-provided electro-mechanical
thermostats are for single speed fan operation only.
A42-4326