Single & Dual Duct VAV Terminal Units - Page 11

Single & Dual Duct VAV Terminal Units

Application Considerations

Table G-3 - Primary Air Control VCCE, VCWE, VDDE CFM Setting Guidelines

Control Type	Valve Size	Nominal CFM	Maximum Setting	Minimum Setting	Constant Volume
Pneumatic With Volume Regulator and Pressure Independent Electronic	03	300	135-415 CFM	60-220 CFM	60-415
	06	600	215-650 CFM	90-340 CFM	90-650
	11	1100	400-1200 CFM	170-640 CFM	170-1200
	17	1700	650-1930 CFM	270-1020 CFM	270-1930
	24	2400	930-2800 CFM	390-1480 CFM	390-2800
	32	3200	1270-3800 CFM	530-2000 CFM	530-3800
	42	4200	1660-5000 CFM	700-2630 CFM	700-5000
UCM - Direct Digital	03	300	150-315 CFM	60-300 CFM
	06	600	300-630 CFM	90-600 CFM
	11	1100	550-1155 CFM	165-1100 CFM
	17	1700	850-1785 CFM	255-1700 CFM
	24	2400	1200-2520 CFM	360-2400 CFM
	32	3200	1600-3360 CFM	480-3200 CFM
	42	4200	2100-4410 CFM	630-4200 CFM

Table G-3 - Primary Air Control VCCE, VCWE, VDDE L/s Setting Guidelines (Metric)

Control Type	Valve Size	Nominal CFM	Maximum Setting	Minimum Setting	Constant Volume
Pneumatic With Volume Regulator and Pressure Independent Electronic	03	142	64-196	28-104	28-196
	06	283	101-307	42-160	42-307
	11	519	189-566	80-302	80-566
	17	802	307-911	127-481	127-911
	24	1 133	439-1 321	184-698	184-1 321
	32	1 510	599-1 793	250-944	250-1 793
	42	1 982	783-2 360	330-1 241	330-2 360
UCM - Direct Digital	03	142	71-149	28-142
	06	283	142-297	42-283
	11	519	260-545	78-519
	17	802	401-842	120-802
	24	1 133	566-1 189	170-1 133
	32	1 510	755-1 586	227-1 510
	42	1 982	991-2 081	297-1 982

Table G-5 - VCEE - CFM Setting Guidelines

Table G-5 - VCEE - CFM Setting Guidelines

Note:

1. Minimum flow and maximum flow settings must have at least a .05 delta P flow sensor signal difference.

2. Flow rings are provided with all unit sizes.

3. A minimum flow setting of zero is permissible, except for hot water and electric reheat.

4. UCM-DDC control - The minimum heating flow setting is factory set to 30% of nominal air valve flow. This is field adjustable.

5. On Model VDDE - Constant Volume = (Heat Min + Cool Max = Heat Max + Cool Min.)

Example: Constant Volume = 1200 CFM

Heat Max = 800 Cool Max=1200

Heat Min= 0 Cool Min=400

6. Minimum CFM's could increase due to KW requirements. Refer to Chart P-1 thru P-5 for guidelines.

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