Friedrich VERT-I-PAK VEA09, Руководство по установке и эксплуатации

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920-075-10
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 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 control the unit with a 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
controlled by the thermostat.
6) Reattach the control box cover.
Unit Control Panel (for easy servicing and diagnostics)
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 9).
Whenever the switch closes, the unit operation will stop.
Maximum Wire Length for Desk Control Switch
Wire Size Maximum Length
#24 400 ft.
#22 600 ft.
#20 900 ft.
#18 1500 ft.
#16 2000 ft.
Low fan
High fan
Fan only
Temp
Power
Temp
Cool
Heat
Thermostat Connections
C = Common Ground
W = Call for Heating
Y = Call for Cooling
R = 24V Power from Unit
GL = Call for Fan (Low Speed)
GH = Call for Fan (High Speed)
B = Reversing Valve Energized in heating mode
Auxiliary Fan Control
The Smart Center also has the ability to control a 24VAC
relay to activate an auxiliary, or transfer, fan. The outputs
are listed as 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. Anytime that the fan runs, the
terminals will send a 24VAC signal to the relay. The relay
must be 24 VAC, 50mA or less.
Note: The relay and auxiliary fans must be field supplied.
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. 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.
RT5 (Two speed fan)
RT4 (One speed fan)
Cool Off Heat Auto On
Note: The desk
control system and
switches must be
field supplied.