Electric Heater CFM Limitations | Johnson Controls BQ 048, BQ 060

364985-XIM-B-0508

TABLE 3: ELECTRIC HEATER CFM LIMITATIONS

UNIT MODEL SIZE				MINIMUM SUPPLY AIR CFM
UNIT MODEL SIZE	VOLTAGE			HEATER SIZE NOMINAL KW
NOMINAL TONS	VOLTAGE			HEATER SIZE NOMINAL KW
NOMINAL TONS		5	7		10	15	20	30
		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”.

Johnson Controls Unitary Products

BQ 048, BQ 036, BQ 060 specifications

Johnson Controls has established itself as a leading player in the HVAC and building management industries, and its BQ series of chillers - including the BQ 060, BQ 036, and BQ 048 - reflects this commitment to innovation and efficiency. These models are designed to provide advanced cooling solutions suitable for a variety of commercial applications.

The BQ 060 is particularly notable for its high-performance capabilities. With a cooling capacity of 60 tons, it utilizes variable-speed compressors, allowing it to adjust its performance based on the cooling demand. This flexibility not only enhances energy efficiency but also reduces operational costs. The unit incorporates advanced microprocessor controls that facilitate seamless integration with building management systems, enabling real-time monitoring and adjustments.

Moving on to the BQ 036, this model is engineered for facilities that require a smaller footprint but still demand reliability and efficiency. With a cooling capacity of 36 tons, it features a compact design without compromising on performance. The BQ 036 also employs environmentally friendly refrigerants, aligning with Johnson Controls' commitment to sustainability. Enhanced insulation and sound-dampening technologies make it an ideal choice for noise-sensitive environments, ensuring comfort without sacrificing efficiency.

The BQ 048 lies in between the two, with a capacity of 48 tons, making it versatile for medium-sized commercial buildings. Its design incorporates a modular approach, allowing for easy scalability in future expansions. This model also features energy recovery options that can utilize excess heat to improve overall efficiency, further solidifying its role in sustainable building practices. Its user-friendly interface enhances operability, simplifying management for building operators.

All three models of the BQ series share key characteristics, such as robust construction to withstand diverse environmental conditions, and low maintenance requirements thanks to their durable components. They utilize advanced technologies for temperature control and energy efficiency, including an intelligent controller that automates more routine tasks. Together, the BQ 060, BQ 036, and BQ 048 offer comprehensive solutions that cater to the growing demands of energy efficiency, sustainability, and reliability in modern building operations. With these chillers, Johnson Controls continues to lead the way in shaping the future of HVAC solutions.