Thomas & Betts RGM 405, RZ405 dimensions Mixing Cabinet Outside and Return Air

OPTIONAL ACCESSORIES (cont'd)

18. Optional Filter Cabinet (return air only)

A filter cabinet designed for 2" pleated disposable or permanent metal filters is shipped separately for field assembly and installation. Depending on the option selected, filters are either shipped with the cabinet or are field-supplied.

To adapt to a variety of applications, the heater cabinet is designed so that the filter cabinet can attach on either the right side, the left side, or the rear of the heater. The larger filter cabinets (left two tables below) are uniquely designed so that the same cabinet can be field-assembled and installed with either a horizontal or vertical air inlet. The smaller filter cabinet in the table on the right is limited to Sizes 150 and 200 and is available with a horizontal inlet only. All cabinets have door panels for easy filter removal for changing or cleaning.

All of the filter cabinets have a duct flange for attaching the inlet air duct. For inlet duct dimensions, see Paragraph 8.

Follow the step-by-step instructions included with the filter cabinet package to assemble and attach it to the heater.

Figure 21 - Filter Cabinets with Filter Arrangements and Filter Sizes

Option CW4 with 2" Pleated Filters	Option CW7 with 2" Pleated Filters
Option CW5 with 2" Permanent Filters	Option CW12 with 2" Permanent Filters
Option CW6 for Field-Supplied Filters	Option CW11 for Field-Supplied Filters
• Attaches on Either Side of the Heater	• Attaches on the Rear of the Heater
• Vertical (Top) or Horizontal Inlet Opening	• Vertical (Top) or Horizontal Inlet
• "V" Filter Rack Arrangement	Opening
	• "V" Filter Rack Arrangement
Figure 21A -	Figure 21B -
	Assembled
Assembled with
	with
Vertical Air
Inlet Opening	Horizontal
	Air Inlet
	Opening

Option CW8 with 2" Pleated Filters

Option CW9 with 2" Permanent Filters

Option CW10 for Field-Supplied Filters

•Attaches on either Side or the Rear of a Size 150 or 200 Heater

•Horizontal Inlet Opening

•"V" Filter Rack Arrangement

Figure 21C -

Small Filter Cabinet for Sizes 150 and 200 only -- Horizontal Air Inlet Only

Sizes of Permanent or Pleated 2"

Filters for Options CW4, CW5, or CW6

Size	CFM	FPM	Filters
150	1800	281	(4) 16 x 16
	2400	375	(4) 16 x 16
	3000	469	(4) 16 x 16
200	2400	375	(4) 16 x 16
	3000	469	(4) 16 x 16
250	3000	469	(4) 16 x 16
	*4000	625	(4) 16 x 16
	**5000	781	(4) 16 x 16
			(4) 16 x 16
300	3000	469	(4) 16 x 16
	*4000	625	(4) 16 x 16
	**5000	781	(4) 16 x 16
			(4) 16 x 16
350	4300	448	(6) 16 x 16
	5000	521	(6) 16 x 16
	*6000	625	(6) 16 x 16
400	4300	448	(6) 16 x 16
	5000	521	(6) 16 x 16
	*6000	625	(6) 16 x 16

Sizes of Permanent or Pleated 2" Filters for Options CW7, CW12, or CW11

Size	CFM	FPM	Filters
150	1800	281	(4) 16 x 16
	2400	375	(4) 16 x 16
	3000	469	(4) 16 x 16
200	2400	375	(4) 16 x 16
	3000	469	(4) 16 x 16
250	3000	313	(6) 16 x 16
	4000	417	(6) 16 x 16
	5000	521	(6) 16 x 16
300	3000	313	(6) 16 x 16
	4000	417	(6) 16 x 16
	5000	521	(6) 16 x 16
350	4300	448	(6) 16 x 16
	5000	521	(6) 16 x 16
	*6000	625	(6) 16 x 16
400	4300	448	(6) 16 x 16
	5000	521	(6) 16 x 16
	*6000	625	(6) 16 x 16

Filters for Options CW8, CW9, CW10

Size CFM FPM			2" Filters
			Pleated	Permanent
150	1800	375	(2) 12 x 32	(4) 12 x 16
	2400	500	(2) 12 x 32	(4) 12 x 16
	*3000	625	--	(4) 12 x 16
200	2400	500	(2) 12 x 32	(4) 12 x 16
	*3000	625	--	(4) 12 x 16

NOTES:

*Requires 2" permanent filters.

**If using side inlets, two cabinets must be installed, one on each side.

19. Mixing Cabinet (Outside and Return Air)

The optional mixing box for the Reznor® Model CAUA heater is designed to provide the system with a supply air mixture of return air and outside air. Any percentage of outside air can be supplied to the unit as long as the air temperature entering the blower is 35°F or above. The mixing box is available in an assortment of configurations with a selection of actuators and controls. All mixing boxes are completely assembled at the factory for field attachment to the rear of a Model CAUA heater.

Follow the instructions packed with the mixing box to cut out the opening and attach the mixing box. If the mixing box has dampers, follow the

instructions for routing the damper motor wires, and connect the wires according to the wiring diagram. If there are both return air and outside air dampers, follow the directions to adjust the damper linkage.

All mixing box inlet air openings have duct flanges for attachment of ductwork. Ductwork must be attached to the outside air opening. Removable door panels provide for filter access from either end of the cabinet. If the box was ordered with optional filters, it is shipped with the filters installed.

Form 405, Page 20