26
Fig. 30 — 42WKN Unit 2-Pipe System with Heating/Cooling Changeover, Aquastat, and Electro-Mechanical
Control Wiring Diagram, Sizes 18 and 20
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.
A42-4337
