Thermostat Installation - Friedrich VERT-I-PAK A-Series Installation & Operation Manual

Remote Thermostat and Low Voltage Control Connection
Remote Thermostat
All Friedrich Vert-I-Pak units are factory configured 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 configuration
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
field supplied.
Maximum Wire Length for Desk Control Switch
AWG Wire Size
24
22
20
18
16
Maximum Length (ft.)
400
600
900
1500
2000
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 field sup-
plied. The relay must be 24VAC @ 100mA or less.
Interface Definition
Terminal Code
C
GH
GL
B Call for Heat Pump (Reversing Valve)
Y
W
R
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.
Wire Connection Function
Common Ground Terminal
Call for High Fan
Call for Low Fan
Call for Compressor
Call for Heating (Electric)
24VAC to Wall Thermostat
22