Q-SERIES DI HEATER OPERATION / MAINTENANCE MANUAL
PAGE 11
Caution
Hot Surface
Do not touch. Can cause
skin burns upon contact.
Disconnect and lockout
power and allow surface to
cool before servicing.
Connect the “Over Pressure Relief Drain” to an open drain line with
no more than 30’ of ¾” tubing. Do not connect restrictive fittings or
valves in line with the drain. If an overpressure condition occurs in
the heater, a burst fitting will relieve pressure in the heater. The fitting
is non-resettable and must be replaced if ruptured (see Section 8.1.f).
Attach cabinet drain line to bottom of cabinet. If a cabinet drain line is
not installed, the system will be difficult to drain should repairs be
needed.
CAUTION:
Depending on installation and routing of water supply
lines, a trip hazard may be created. It is the responsibility of the facility
installation personnel to eliminate or minimize any and all trip hazards or
identify such hazards with visual warning signs.
Lockout
and
Tagout
facility power connection switch or equivalent
before connecting power lines to heater main breaker.
To access the electrical cabinet, rotate the electrical disconnect
handle to the
“OFF” position and then remove the side access panel.
Route the wires from the electrical source (480 VAC, 415VAC, 380
VAC, or 208 VAC 3-phase) into and through the conduit opening on
the top of the enclosure. To secure an electrical conduit fitting,
remove lifting eyebolts located on top of the system and raise the
vented top panel. The conduit nut may then be secured. Reassemble
the vented top panel to the enclosure.
Connect the supply grounding wire to the grounding lug and the other
three lines into the top of the circuit breaker connections (L1, L2, and
L3) as shown in Figure 3-1 (torque wire terminal connections to 120
in/lb).
