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Installation and Wiring
Remove the knockouts before
6
reattaching the rear cover or
inserting the control in the panel.
Insert DQ15D through the
7
prepared opening and slide the
retaining collar over the case from
the rear of the panel.
Hand tighten the collar, securely
8
tighten the two (2) collar screws.
Install a suitable liquid-tight
9
conduit fitting through the knock-out
opening following manufacturer
instructions and install field wiring.
Using the Power, Heating and
10
Cooling Relay Wiring illustration in
this chapter, install the required
input and output wires. Use
National Electric Code and local
codes for determining wire sizing,
insulation, terminations, etc.
Warning
Overtemperature protection is
required in any system where a fault
condition resulting in high tempera-
ture could produce a fire or hazard-
ous condition. Operation without
thorough safety precautions can
result in equipment failure, property
damage and personal injury.
Typical Heater Installation only. Follow your system-specific installation instructions.
M-34-01
Revision - Date: 01 - 04/23/08
Wiring
This section provides wiring notes
for Power Heating/Cooling relays
and Over Temperature Protection.
Over Temperature Protection
Component failure in a temperature
controlled process can result in
damage to the product, heater over
temperature, and the possibility of a
fire. To safeguard against these
hazards, install over temperature
protection to interrupt the heater
power supply in case of low
solution level.
Process Technology heaters include a
thermal fuse standard (Protector I, II,
or III) on the heater to monitor
heater surface temperature. These
devices are designed to cut the power
to the heater in case of low solution
level. In addition to thermal protec-
tion, Process Technology strongly
recommends the use of liquid level
controls to monitor solution level
and shut off heaters prior to over
temperature conditions.
Ensure you read and adhere to all
Over Temperature Protector
Installation instructions and
warnings.
6
DQ15D Manual
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