Friedrich H)A09K50L Manuale Utente

9

Remote Thermostat

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.

RT5 (Two speed fan)

RT4 (One speed fan)

Cool   Off   Heat

Auto     On 

All Friedrich Vert-I-Pak units are factory configured to be 

controlled by using a 24V 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. 

NOTE: An improperly operating, or poorly located room 

thermostat can be the source of perceived equipment 

problems. A careful check of the thermostat and wiring 

must be made then to insure that it is not the source of 

problems. 

Manual Changeover Thermostat

For Heat Pump equipped units: a single stage, heat/cool 

thermostat with a terminal for a reversing valve operation is 

required. Terminal “B” should be continuously energized in the 

heat mode and terminal “G” should be energized whenever 

there is a call for heating or cooling. (Typically, a single stage, 

heat/cool thermostat designed for use with electric heat 

systems will meet the above requirements).

Location

The thermostat should not be mounted where it may be 

affected  by drafts, discharge air from registers (hot or cold), 

or heat radiated from the sun or appliances.
The thermostat should be located about 5 Ft. above the 

fl oor  in  an  area  of  average  temperature,  with  good  air 

circulation. Close proximity to the return air grille is the 

best choice.

Mercury bulb type thermostats MUST be level to control 

temperature accurately to the desired set-point. Electronic 

digital type thermostats SHOULD be level for aesthetics.

DO NOT use a two (2) stage Heat Pump Thermostat.  

Use of this type of thermostat may result in equipment 

and/or property damage