Installation & Operation Manual (2019)

23
Remote Thermostat
All Friedrich Vert-I-Pak units are factory congured to be
controlled by using a single stage heat/cool remote wall
mounted thermostat. The thermostat may be auto or
manual changeover as long as the control conguration
matches that of the Vert-I-Pak unit.
To connect the wall mounted thermostat:
1. Pull the disconnect switch.
2. Unscrew and remove the control box panel.
3. Select which side to run your thermostat wire.
4. Run the wires through the side hole in the box to
reach the connection terminal wiring.
5. Make the connections, appropriately matching the
wires as shown in the wiring diagram.
6. Reattach the control box cover.
Front Desk Control Terminals
The Friedrich Vert-I-Pak has built-in provisions for con-
nection to an external switch to control power to the unit.
The switch can be a central desk control system door
switch.
For desk control operation, connect on side of the switch
to the D1 terminal and the other to the D2 terminal.
When the circuit is closed, unit operation will stop.
NOTE: The desk control system and switches must be
eld supplied.
Maximum Wire Length for Desk Control Switch
Auxiliary Fan Control
The Friedrich Vert-I-Pak also has the ability to control a
24VAC relay to activate an auxiliary or transfer fan. The
outputs are F1 and F2 on the control board.
To connect the relay, simply wire one side of the relay to
F1 and the other side to F2.
NOTE: The relay and auxiliary fans must be eld sup-
plied. The relay must be 24VAC @ 100mA or less.
Interface Denition
NOTE: It is the installer’s responsibility to ensure that all
control wiring connections are made in accordance with
the installation instructions. Improper connection of the
thermostat control wiring and/or tampering with the
unit’s internal wiring can void the equipment warranty
and may result in property damage, personal injury, or
death. Questions concerning proper connections to the
unit should be directed to the factory.
Remote Thermostat and Low Voltage Control Connection
AWG Wire Size Maximum Length (ft.)
24 400
22 600
20 900
18 1500
16 2000
Terminal Code Wire Connection Function
C Common Ground Terminal
GH Call for High Fan
GL Call for Low Fan
B Call for Heat Pump (Reversing Valve)
Y Call for Compressor
W Call for Heating (Electric)
R 24VAC to Wall Thermostat