Johnson Controls BQ 048, BQ 060, BQ 036 installation manual Electric Heater Cfm Limitations

364985-XIM-B-0508

TABLE 3: ELECTRIC HEATER CFM LIMITATIONS

UNIT MODEL SIZE				MINIMUM SUPPLY AIR CFM
	VOLTAGE			HEATER SIZE NOMINAL KW
NOMINAL TONS
		5	7		10	15	20	30
	208/230-1-60	900	900		900	900	900	-
036	208/230-3-60	900	900		900	900	900	-
(3)	460-3-60	-	900		900	900	900	-
	600-3-60	-	-		900	900	900	-
	208/230-1-60	1200	1200		1200	1200	1200	-
048	208/230-3-60	1200	1200		1200	1200	1200	-
(4)	460-3-60	-	1200		1200	1200	1200	-
	600-3-60	-	-		1200	1200	1200	-
	208/230-1-60	1500	1500		1500	1500	1500	1500
060	208/230-3-60	1500	1500		1500	1500	1500	1500
(5)	460-3-60	-	1500		1500	1500	1500	1500
	600-3-60	-	-		1500	1500	1500	1500

ECONOMIZER/MOTORIZED DAMPER AND RAIN HOOD

The instruction for the optional economizer/motorized damper and rain hood can be found in form 035- 07364-000. Use these instructions when field assem- bling an economizer rain hood onto a unit. The outdoor and return air dampers, the damper actuator, the damper linkage, the outdoor and return air divider baf- fles, and all the control sensors are factory mounted as part of the “Factory installed” economizer/motorized damper options.

POWER EXHAUST/BAROMETRIC RELIEF DAMPER AND RAIN HOOD

The instructions for the power exhaust/barometric relief damper and rain hood can be found in form 530.18- N1.10V.

All of the components, including the dampers, hard- ware, and mounting instructions are shipped in a single package external from the unit and must be field assembled and installed.

Power exhaust is only available as a field installed accessory.

ECONOMIZER AND POWER EXHAUST DAMPER SET POINT ADJUSTMENTS AND INFORMATION

Remove the economizer access panel from the unit. Loosen but do not remove the two panel latches. Locate the economizer control module, where the fol- lowing adjustments will be made.

Extreme care must be exercised in turning all setpoint, maximum, and minimum damper positioning adjustment screws to prevent twist- ing them off.

Check that the damper blades move smoothly without binding; carefully turn the Minimum Position Adjusting screw (found on the damper control module) fully clockwise and then set the thermostat indoor fan switch to the on position and then off, or energize and de- energize terminals “R” to “G”.

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