LAARS Mini-Combo II MCS - Install and Operating Manual - Manual (Page 6)

Page 6 LAARS Heating Systems
Electrical Connection: (See Figure 5, 6 and 7)
1. Remove the two screws attaching the front cover of
the control box.
2. There are five wires coiled in the area on the right
side of the control box, supplied with wire nuts: 2
black wires twisted together, 2 white wires twisted
together, and a brown wire.
3. Follow Figures 5, 6 and 7. Remove the wire nut
from the two black wires, and connect the hot lead
from a 115 volt power supply to both wires. Secure
the three wires with the wire nut.
4. The two white, neutral wires should be joined to the
other neutral lead coming from the 115 volt power
supply, and the neutral lead coming from the pump
(space heating).
5. The brown wire attaches to the hot side of the space
heating pump.
6. There is a molex connector located on the left side
of the control panel. Connect the vent damper
harness to the molex connector and the other end to
the vent damper receptacle.
NOTE: The connection in step 6 should remain intact at
all times, otherwise the boiler will not fire.
Some Canadian units are supplied with vent damper
jumper plug. Do not remove jumper unless vent damper
is to be installed.