2
DKRCCPICD0A122
Installation
Select an accessible location, where the control will not be subject
to damage.
Mount the KPU on a bracket or on a completely fl at surface.
Mounting on an uneven surface may cause incorrect control
operation.
For bracket mounting, use only the 10-32 x 3/16 inch screws
furnished with the control. Other screws may interfere with the
functioning of the control. In no case can screws protrude more
than 1/8” into the control.
AC1
AC3
AC15
LR
DC13
16 A
16 A
10A
112 A
12 W
400 V
220 V
Screws for bracket
mounting
Mounting holes
for fl at surfaces
6) Ensure minimal length of capillary tube exposed to temperature
for KPU with straight capillary bulb type:
− 16 in. for KPU temperature controls with 80 in. capillary tube
− 22 in. for KPU temperature controls with 200 in. capillary tube
7) For temperature controls with room sensor coils, make sure that
placement allows free airfl ow around the coil and bulb. At the
same time, ensure that the bulb is not exposed to drafts from
doors, or to heat radiated from the evaporator surface.
Make sure that the bulb does not come into contact with a wall
surface.
Never mount the temperature control directly on a cold wall.
Instead, mount the unit on an insulating plate.
IMPORTANT:
Do not dent or deform the bulb of the temperature control,
as doing so could damage the bulb and cause charge
leakage.
Wiring
The terminal block as well as grounding screw are accessible after
dismounting the front cover.
CAUTION:
To avoid the possibility of electric shock and damage to
equipment, diconnect the power supply before any wiring
connections are made.
Never touch current conducting (LIVE) parts with your fi ngers
or with tools.
NOTE:
All wiring should conform to the National Electrical Code and
to applicable local regulations.
Use only copper wire.
Use only the terminal screws furnished in the terminal block.
Do not exceed tightening torque of 20 inch pounds (2.3 Nm).
Do not exceed the control’s specifi ed electrical ratings.
Electrical ratings according to UL regulations
European electrical ratings according to EN 60947
120 V a.c.
24 FLA, 144 LRA - make only
240 V a.c.
24 FLA, 144 LRA - make only
240 V d.c.
12 W pilot duty
Use only the mounting holes provided. Do not make additional
holes.
IMPORTANT
:
For vapor charged temperature controls, ensure that
the bulb is installed in a colder location than the control
housing and capillary tube. This prevents charge migration
from the bulb and ambient temperature will have no eff ect
on regulation accuracy.
For adsorption charged temperature controls, the bulb can be
placed in a warmer or colder location than the control housing
and capillary tube.
General recommendations for capillary tube and bulb
installation
:
1) Protect the capillary tube from damage due to vibration.
a.When the control unit is mounted directly on the compressor,
the capillary tube must be secured to the compressor so that
both vibrate together.
b.For mounting otherwise, form surplus capillary tube into a
loose loop, and secure the length of capillary tube between
the compressor and the loop to the compressor. Secure the
length from the loop to the thermostat to the base on which
the thermostat is mounted.
2) Leave a little slack in the capillary tube to help dampen
vibration.
3) Avoid sharp bends and bending the capillary tube at the same
point several times, as these actions can weaken the
material and increase the likelihood of the tube cracking
4) Form and locate the capillary tube away from sharp or abrasive
objects that might damage it.
5) Never allow the capillary tube of a vapor charged temperature
control to run alongside of a suction line in a wall entry.
