Thomas & Betts RZ405, RGM 405 dimensions Model CAUA, General, Table of Contents

C E R T I F I E D

Model CAUA

Gas-Fired, Indoor, Vertical (Upflow) Power-Vented Heater

INSTALLATION FORM RZ 405 (Version B)

Obsoletes Form RGM 405 (Version A)

APPLIES TO:Installation

Table of Contents

Installation and Operation	Paragraphs 1-18	.... Pages 1-18
Optional Accessories	Paragraphs 19-21	.. Pages 19-21
Check Installation and Start-Up	Paragraph 22	.. Pages 22-23

Index	By Page No.		Index	By Page No.		Index	By Page No.
Belt Drive		15	Discharge Plenum (Optional)	............	2, 21	Motor Amps		16
Blower Motor and Drive		15	Duct Connections		12	Mounting the Heater		2
Check/Test/Start-Up		22	Electrical Supply and Connections		14	Start-Up		22
Clearances		2	Filter Cabinet (Optional)		2, 20	Thermostat		14
Combustion Air		4	Gas Piping and Pressures		13	Uncrating and Preparation		2
Combustion Air Proving Switch		15	Gas Valve		16	Vent and Combustion Air		4
Concentric Adapter		2, 5	General		1	Determine Type of Vent		4
Condensate Drain		14	Hazard Intensity Levels		2	Power Vent Only Installation		10-11
Confined Space Installation		10	Ignition System		16	Separated-Combustion Installation ...		5-9
Cased Cooling Coil (Model ACU)		2, 19	Inlet Base (Optional)		2, 21	Warranty		2
Control Location Illustration	.................	15	Installation Codes		2	Wiring Diagrams		17-19
Dimensions		3	Mixing Cabinet (Optional)		2, 21

REFERENCES:	Installation Manual for Optional Filter Cabinet, RZ 405-FC
Operation/Maintenance/Service Manual, Form RZ 405-OMS	Installation Manual for Optional Mixing Box, RZ 405-MB
Installation Manual for Model ACU Cooling Coil, RZ 405-CC	Installation Instructions for Optional Inlet Base, RZ 405-IB
Gas Conversion Instructions for Model CAUA, RZ 405-GC	Installation Instructions for Optional Discharge Plenum, RZ 405-DP

FOR YOUR SAFETY

What to do if you smell gas:

•Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.

•If you cannot reach your gas supplier, call your fire department.

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Refer to this manual. For assistance or additional information, consult a qualified installer, service agency, or the gas supplier.

WARNING: Gas-fired appliances are not designed for use in hazardous atmospheres containing flammable vapors or combustible dust. See Hazard Levels, page 2.

FOR YOUR SAFETY

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

GENERAL

Installation should be done by a qualified agency in accordance with the instructions in this manual and in compliance with all codes and re- quirements of authorities having jurisdiction. The instructions in this manual apply to the heater model shown below.

Model	Description
CAUA	Gas-Fired,
	Power-Vented,
	Vertical (Upflow)
	Heater

Model CAUA heaters are design-certified by the Canadian Standards Association (CSA) to ANSI Z83.6 and CGA 2.6-M96 for industrial/ commercial installations in the United States and Canada. Heaters are available for use with either natural or propane gas. The type of gas, the firing rate, and the electrical characteristics are on the unit rating plate.

A Model CAUA heater requires installation of an inlet air duct or an optional inlet air base and a supply duct or an optional discharge ple- num. This heater may be installed as a separated-combustion system (taking combustion air from outside) or as a power-vented system (taking combustion air from the space where the heater is installed).

Mfg No. 164771, Page 1