Raypak 399B Manuel D'installation Et D'utilisation page 22

3. Observe proper wire colors while making electrical
connections. Many electronic controls are polari-
ty 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 ap-
plicable manufacturers' instructions.
6. Conduit should not be used as the earth ground.
Field Wiring Connection
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.
ADANGER: SHOCK HAZARD
Fig. 19: Wiring Location
22
ACAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
Make sure electrical power to the heater is disconnect-
ed to avoid potential serious injury or damage to com-
ponents.
Fig. 20: On-Off Wiring Connections