Nibe Climate Master RGED Series, Installation Instructions Manual

Page: 49 / 160

49
J.3.2.1. Adjusting Fresh Air Flow with
Economizer
See the above sections for measuring airflow,
a nd r efer t o t he I&O i ncluded with t he
Economizers for more information on adjusting
airflow.
These I&Os can also be found on the
manufacturer’s website.
J.3.2.2. Adjusting Fresh Air Flow with
Damper
All dampers are field install accessories. See the
above sections for measuring airflow, a nd r efer
to the I&O included with the fresh air dampers for
more information on adjusting airflow.
Refer to local building codes for any fresh air
requirements.
These I&Os can also e found on the
manufacturer’s website.
J.4. Checking Cooling Operation
Note: In the below section, first and second stage
cooling applies to ONLY the 6 ton units. For 3-5T
units, only first stage applies.
COOLING SEQUENCE OF OPERATION
A. Call for cooling
1. The zone thermostat contacts close, and a call
for cooling is initiated.
2. Inputs ‘Y1’ and ‘G’ to the control are
energized.
3. The control senses input to ‘Y1’ and ‘G’. After
a 1sec delay, the control energizes both the
indoor blower and first stage compressor.
4. The control enters normal operating loop were
all inputs are continuously checked.
5. Zone thermostat is satisfied.
6. The blower will continue to run for a preset
period of time after the zone thermostat is
satisfied.
7. The control goes into standby mode displaying
a “O”.
B. Call for second stage cooling. After first
stage cooling established; starting from A6.
1. If a call for second stage cooling is initiated
after a call for first stage cooling is established,
the control energizes ‘Y2’ and energizes the
second stage compressor.
2. Then the control enters the normal operating
loop where all inputs are continuously checked.
C. Second stage satisfied and first stage still
called for; starting from B2
.
1. ‘Y2’ is de-energized and the second
compressor stage is de-energized.
D. First stage and second stage called
simultaneously.
1. The zone thermostat contacts close, and a call
for first and second stage cooling is initiated.
2. Inputs ‘Y1’, ‘Y2’ and ‘G’ to the control are
energized.
3. The control senses ‘Y1’, ‘Y2’ and ‘G’. After
a 1sec delay, the control energizes the indoor
blower, and the first and second compressor
stages.
E. First stage and second stage removed
simultaneously.
1. Upon a loss of ‘Y1’ and ‘Y2’, the compressor
is de-energized. The control de-energizes the
indoor blower relay, and cuts off the blower after
an indoor blower delay.
2. The control goes into standby mode displaying
a “O”.
CONTINUOUS FAN MODE
A ‘G’ input only indicates a zone thermostat call
for continuous indoor blower operation.
TIME DELAY BYPASS for non-DDC units
The Time Delay Bypass resets the ICC
(Integrated Compressor Control) from any
lockout mode or bypasses compressor anti-short
cycle delay timer. To bypass the time delay,
press the SW1 button with an an insulated probe
for 1sec and then release.
FAULT RECALL OPERATION for non-DDC
unit
s
To enter FAULT RECALL mode, press the SW1
button with an insulated probe for 2sec and
release. Upon entering and exiting the FAULT
RECALL mode, the top bottom segments of the
7-segment display will be activated. The ICC will
automatically scroll through the stored faults on
the 7-segment display. Each fault is displayed
one time with the top segment of the 7-segment
display activated between faults. Each fault is
displayed with the most recent fault displayed
first. An “O” will be displayed when no faults are
stored. The ICC will automatically exit the FAULT
RECALL mode after displaying stored faults.
An example of one LPC fault and one HPC fault
scrolled on the display is shown as: -21-23
CLEAR FAULT HISTORY for non-DDC units.
To clear FAULT HISTORY, press the SW1 button
with an insulated probe for 5sec and release. T
J. STARTUP AND OPERATION