Heat Controller HTV Series - ECM Blower Control

Heat Controller, Inc. HTV/HTD/HTH SERIES
30
ECM BLOWER CONTROL
DIP Switch Tap
Setting
SW1 SW2
1 ON ON
2 ON OFF
3 OFF ON
4 OFF OFF
Figure 16: ECM Interface Layout
Any time the unit is running in the cooling mode,
it will operate at the lower airflow to improve
latent capacity. The “DEHUM” LED will be
illuminated at all times. Heating airflow is not
affected. NOTE: Do not select
dehumidification mode if cooling setting is tap 1.
2. Automatic (Humidistat-Controlled)
Dehumidification Mode: When the
dehumidification mode is selected (via DIP
switch setting) AND a humidistat is
connected to terminal DH, the cooling airflow
will only be reduced when the humidistat
senses that additional dehumidification is
required. The DH terminal is reverse logic.
Therefore, a humidistat (not dehumidistat) is
required. The “DEHUM” LED will be
illuminated only when the humidistat is
calling for dehumidification mode. Heating
airflow is not affected. NOTE: Do not
select dehumidification mode if cooling
setting is tap 1.
Table 5: ECM Board Tap Settings
DIP Switch Tap
Setting
SW3 SW4
1 ON ON
2 ON OFF
3 OFF ON
4 OFF OFF
DIP Switch Tap
Setting
SW5 SW6
1 ON ON
2 ON OFF
3 OFF ON
27
4 OFF OFF
DIP Switch Tap
Setting
SW7 SW8
Test ON ON
DIP Switch Tap
Setting
SW9
Norm ON
- ON OFF
+ OFF ON
Norm OFF OFF
Dehumid OFF
Cooling Settings
Heating Settings
Aux / Emergency Heat Settings
CFM Adjust Settings Dehum Mode Settings