Installer selectable high speed settings
The circuit board on the units have adjustable DIP switches to select the maximum air flow at high speed. Adjusting high speed can
be useful to accurately satisfy the calculated ventilation rate. The table below indicates how to adjust high speed to speed 4 (Hi 2) and
speed 3 (Hi 1). Refer to the specification pages in the manual for the air flow rates for speeds 5, 4 and 3. The factory setting is speed 5
(Hi 3).
Applicable Units: ASSURE-120S-S1 and SYNC-110SE-S1
Dip 1 On - R2000 Defrost cycle disabled
Dip 1 Off - R2000 Defrost cycle enabled
Dip 2 On- Recirculation Enabled (damper defrost models only)
Dip 2 Off- Recirculation Disabled (fan defrost models only)
Switch 2:
Dip 1 On - R2000 Defrost cycle disabled
Dip 1 Off - R2000 Defrost cycle enabled
Dip 2- Null
Switch 2:
Dip 1 On - R2000 Defrost cycle disabled
Dip 1 Off - R2000 Defrost cycle enabled
Dip 2- Null
Switch 1: Auto balance Unit Selection
Switch 1: Auto balance Unit Selection
Unit Dip Switch Orientation
Table 12. Dip Switch Orientation for ASSURE-120S-S1 & SYNC-110SE-S1
Speed
SWITCH 1
1
2*
3
4
Hi 3 (Speed 5)
ON
OFF*
ON
ON
Hi 2 (Speed 4)
ON
OFF*
OFF
ON
Hi 1 (Speed 3)
ON
OFF*
ON
OFF
*Leave on Factory Setting
Applicable Units: SYNC-180SCE-S1
Applicable Units: SYNC-270TCE-S1
Table 13. Dip Switch Orientation for SYNC-180SCE-S1
Speed
SWITCH 2
SWITCH 1
1
2
3
4
1
2*
3
4
Hi 3 (Speed 5)
ON
ON
ON
ON
OFF*
OFF*
OFF*
OFF*
Hi 2 (Speed 4)
ON
ON
OFF
ON
Hi 1 (Speed 3)
ON
ON
ON
OFF
*Leave on Factory Setting
Table 14. Dip Switch Orientation for SYNC-270TCE-S1
Speed
SWITCH 2
SWITCH 1
1
2
3
4
1
2*
3
4
Hi 3 (Speed 5)
ON
ON
ON
ON
OFF*
ON*
OFF*
OFF*
Hi 2 (Speed 4)
ON
ON
OFF
ON
Hi 1 (Speed 3)
ON
ON
ON
OFF
*Leave on Factory Setting
Residential Energy Recovery Ventilators
28
®
