Remote Thermostat; Desk Control Terminals; Thermostat Connections; Auxiliary Fan Control - Friedrich VERT-I-PAK A Serie Manual De Instrucciones

Remote Thermostat and Low Voltage Control Connections

Remote Thermostat

All Friedrich Vert-I-Pak units are factory configured to be con-
trolled 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) After selecting which side you want to run your thermostat
wire through, run the wires through the side hole in the box
to reach the connection terminal for the wiring.
4) Make the wire connections, appropriately matching the
wires as shown in the wiring diagram.
5) Once each wire is matched and connected, the unit is now
ready for operation.
6) Reattach the control box cover.

Desk Control Terminals

The Friedrich VERT-I-PAK has built-in provisions for connection to
an external switch to control power to the unit.
The switch can be a central desk control system or even a
normally open door switch.
For desk control operation, connect one side of the switch to the
D1 terminal and the other to the D2 terminal (See figure 17).
Whenever the switch closes, the unit operation will stop.
NOTE: The desk control system and switches must be field
supplied.
Maximum Wire Length for Desk Control Switch
Wire Size
#24
#22
#20
#18
#16

Thermostat Connections

R = 24V Power from Unit
Y = Call for Cooling
W = Call for Heating
B = Reversing Valve Energized in heating mode
GL = Call for Fan (Low Speed)
GH = Call for Fan (High Speed)
C = Common Ground
Maximum Length
400 ft.
600 ft.
900 ft.
1500 ft.
2000 ft.
WARNING
Electrical shock hazard.
Improper connection of the thermostat
control wiring and/or tampering with the
unit's internal wiring can void the
equipment warranty and can result in
property damage, personal injury and/or
death.
Other manufacturer's units and even older Friedrich models
may have different control wiring connections. Questions
concerning proper connections to the unit should be directed to
the factory.
Control Board
Figure 17
15