Electrical Connections; Field Connections - Berner CHD10 Series Installation & Maintenance Instructions Manual

V. ELECTRICAL CONNECTIONS
All electrical wiring and connections MUST be performed by
qualified personnel in accordance with the latest edition of the
National Electrical Code ANSI/NFPA No. 70 or, in Canada, the
Canadian Electrical Code, Part 1-C.S.A. Standard C22.1 and local
codes and regulations.
MAKE SURE THE CORRECT
VOLTAGE AS MARKED ON THE UNIT IS USED.
A.
A separate line voltage supply with a suitable branch
circuit protection device should be run directly from the
main electrical panel to the unit. A disconnect switch for
each branch circuit is a required part of this installation.
See the voltage label on the unit for circuiting and total
electrical load. The wiring diagram is located in the
wiring compartment.
B.
All field wiring must be copper with a minimum
insulation of 60°C within approved conduit. If any of the
wire supplied with the unit must be replaced, it must be
replaced with copper wiring with a minimum insulation
of 90°C.
C.
Remove the wiring compartment cover on top of the air
curtain. See Figure 9.
D.
The top of the air curtain has knockouts on each side of
the wiring compartment. Remove the required knockout
and connect the power supply to the air curtain. Connect
all supply and control circuit wires according to the
wiring diagram provided.
NOTE: For Electrically heated air curtains provided with
the optional remote thermostat, mount and wire the
thermostat according to thermostat instructions and
wiring diagram.
For Electrically heated air curtains proceed to Section
V - Field Connections, otherwise proceed to Section VI -
Airflow Adjustments
VI. FIELD CONNECTIONS
A. ELECTRICALLY HEATED MODELS
The heater circuit may be controlled by a remote thermostat,
manually through a unit mounted or remote mounted three
position - fan only/off/fan with heat switch. Overheating
protection is provided by auto reset thermal cutouts built
into the blower assembly (see wiring diagram). Proceed to
Section VII - Operating Instructions.
7
FIGURE 9