Heat Controller HDG Manual Do Utilizador

Heat Controller, Inc. 

INSTALLATION INSTRUCTIONS 

HDG Series Air Handler

16

Terminal

Fan speed

Medium

High

Low

Fan 

M1 

M2 

Red 

Blue  B

lack  

Black 

Blue  

Red 

Blue 

Red 

Black  

1. All motors are shipped from the factory at medium speed as default.
2. To charge the fan speed to high speed:
  • Connect the black wire to the fan terminal
  • Connect the blue wire to the M1 terminal
  • Connect the red wire to the M2 terminal
3. To charge the fan spped to low speed
  • Connect the blue wire to the fan terminal
  • Connect the red wire to the M1 terminal
  • Connect the black wire to the M2 terminal

The air distribution system has the greatest effect on airflow. The duct system is totally controlled by the 

contractor. For this reason, the contractor should use only industry-recognized procedures.
Heat pump systems require a specified airflow. Each ton of cooling requires between 350 and 450 cubic 

feet of air per minute (CFM), or 400 CFM nominally.
Duct design and construction should be carefully done. System performance can be lowered dramati-

cally through bad planning or workmanship.
Air supply diffusers must be selected and located carefully. They must be sized and positoined to deliver 

treated air along the perimerter of the space. If they are too small for their intended airflow, they become 

noisy. If they are not located properly, they cause drafts. Return air grilles must be properly sized to carry 

air back to the blower.If they are too small, they also cause noise.
The installers should balance the air distribution system to ensure proper quiet airflow to all rooms in the 

home. This ensures a comfortable living space.
An air velocity meter or airflow hood can give a reading of system CFM.