Thermo Products CDX1-125N, CDX1-75N, CHX1-125N, CHX1-75N StageBlower Settings from factory Table

All installations and services must be performed by qualified service personnel.

Modifications to ECM blower speed settings are done using the S3 and S4 dip switch controls. (Labeled 1 to 8 in Figure 21). Thermo Pride two-stage furnaces are factory shipped at the CFM settings listed below in Table 4.

2-Stage Blower Settings (from factory)

Table 4

	Control Board	Heating	Heating	Constant Fan	Cooling
Unit	Dip Switch	CFM	CFM
				CFM	CFM
	Settings	(low fire)	(high fire)
CDX1-75	1-7 Off	885	1012	500	1000
	8 On
CHX1-75	1-8 Off	760	931	500	1000
CDX1-100	1-7 Off	1094	1340	600	1200
	8 On
CHX1-100	1-8 Off	1015	1243	600	1200
CDX1-125	1-7 Off	1366	1673	700	1400
	8 On
CHX1-125	1-8 Off	1270	1556	700	1400

For adjustments to the Cooling CFM settings, as well as all additional CFM changes, please reference the dip switch tables listed in the ECM operation manual. (Included with every furnace.)

5. FIELD WIRING AND REPLACING WIRING

Field wiring between the furnace and devices not attached to the furnace shall conform with the temperature limitation for Type T wire[63°F rise (35°C)] when installed in accordance with the manufacturer’s instructions. If any of the original factory supplied furnace wiring is replaced or a separate device other than the thermostat is wired internal to the unit 105°C thermoplastic or equivalent wire must be used.

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