Installation Guide
IN-IC1-15
Title
:
Jace to i-Controller REV.200 MPU (575V 40–70 Ton) Conversion
Flō
Tech Support 888-598-1198
3
4-6DEC2021
4.
Pulling Communications Cable
A BacNet communications cable must be pulled to the
unit for communication to the BMS system.
5.
Install New Power Supply
CAUTION:
Make sure the power to the
Flō
unit is turned
off and internal electrical circuits are NOT
energized.
5.1
Install New Transformers
Using 5/16” screws, mount
the 2 transformers in an area
that has available space inside the controls cabinet.
Using the sharpie, mark the transformers as #1 and #2.
Transformer 1 will be dedicated to powering the i-
controller. Transformer 2 will be dedicated to powering all
three expansion modules.
Install the
Flō
provided fuses (Fuse Elec 10A/500V MIG) in
each of the new transformers.
NOTE:
No other devices will be connected to these
transformers.
5.2
Wire New Transformers
Run the new transformers
’
high voltage wires to
Flō
high
voltage terminals L1 and L2.
NOTE:
Ensure the transformer tap correlates to the unit
’s
high voltage.
Leave the new transformer
s’
low voltage wires
disconnected. These will be terminated in the next steps.
5.3
Prepare i-Controller for Installation
Attach 10" lengths of Black 18 AWG wire to the following i-
Controller green plug connection points: 1, 7, 8, 25, 28 &
61. See Figure 1. for plug orientation.
Attach 10" lengths of Red 18 AWG wire to the following i-
Controller green plug connection points: 9, 15, 16, 29 & 71.
See Figure 1. for plug orientation.
Figure 1. Green Connector Reference
Attach Red 18 AWG jumper wires between the following
points on the i-Controller green plug connection points: 71
to 80, 80 to 86, and 86 to 90.
Attach a new Black 18 AWG wire between the
Flō unit’s
CSTB1 24 VAC- (grounded side) and the Black 18 AWG wire
coming from point 61 on the i-Controller.
Attach a new Red 18 AWG wire between the
Flō unit’s
CSTB1 24 VAC+ (hot side) and the Red 18 AWG wire coming
from point 71 on the i-Controller.
5.4
Prepare Expansion Module A for Installation
Attach 10" length of Black 18 AWG wire to the following
Expansion green plug connection points: 1 & 15
**
.
**NOTE:
Only pigtail 15 if the unit has a CO2 or outdoor
humidity sensor.
Attach a 10" length of Red 18 AWG wire to the following
Expansion green plug connection point: 9.
5.5
Prepare Expansion Module B for Installation
Attach 10" lengths of Black 18 AWG wire to the following
Expansion green plug connection points: 1, 15 & 28
*
.
*NOTE:
Point 28 only gets a wire if either 2
nd
space temp
or 2
nd
stage reheat/reclaim inlet probe.
Attach a 10" length of Red 18 AWG wire to the following
Expansion green plug connection point: 9 & 16.
