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prior to working with any electrical connections or
components.
3. Observe proper wire colors while making electri-
cal connections. Many electronic controls are
polarity sensitive. Components damaged by
improper electrical installation are not covered by
warranty.
4. Provide overload protection and a disconnect
means for equipment serviceability as required by
local and state code.
5. Install heater controls, thermostats, or building
management systems in accordance with the
applicable manufacturers’ instructions.
6. Conduit should not be used as the earth ground.
Field Wiring Connection
22
NOTE: A grounding electrode conductor shall be
used to connect the equipment grounding
conductors, the equipment enclosures, and the
grounded service conductor to the grounding
electrode.
Fig. 18: Wiring Location
DANGER: SHOCK HAZARD
Make sure electrical power to the heater is discon-
nected to avoid potential serious injury or damage to
components.
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause im-
proper and dangerous operation. Verify proper
operation after servicing.
Fig. 19: On-Off Wiring Connections