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ENGLISH
REMOTE AUXILIARY AIR CONDITIONING
AND AIR DISTRIBUTION FOR
PETERBILT 379 CHASSIS
INSTALLATION GUIDELINES
for Peterbilt Truck Model 379 with a 70" Sleeper
Dometic Environmental Corporation
Rev. 20080221
ID: 2520
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COPYRIGHT © 2008 Dometic Environmental Corporation, All Rights Reserved. No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photo- copying, recording or otherwise without prior written consent by Dometic Environmental Corporation. Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Dometic Environmental Corporation assumes no responsibility for
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Peterbilt 379 Installation Guidelines CONTENTS INTRODUCTION 4 LOCATING THE COMPONENTS 5 INSTALLING THE CONTROL 6 – 8 INSTALLING THE RETURN AIR VENT 9 INSTALLING THE SUPPLY AIR DISTRIBUTION 10 – 11 ENGLISH 3
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Peterbilt 379 Installation Guidelines INTRODUCTION This document contains supplemental guidelines for installing the Qt-series control and air distribution for the Dometic auxiliary air conditioning system on a Peterbilt 379 chassis with a 70" sleeper. It is intended to be used in conjunction with the standard installation manual, which covers all other aspects of installing, testing and operating this system. These are suggestions based on previous installations. Please be creative in your
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Peterbilt 379 Installation Guidelines LOCATING THE COMPONENTS The Dometic remote auxiliary air conditioning system consists of two basic components: an outside condensing unit, which contains the condenser and an exhaust fan, and an inside unit, which contains the compressor, heater, evaporator and blower (CHEB). The two units are connected by precharged refrigerant lines with quick-connect fittings. Determine where best to install the CHEB (Fig. 1). Refer to the manual that came with t
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Peterbilt 379 Installation Guidelines INSTALLING THE CONTROL Installing the Control/Display Panel Control mounted Mount the control in such a location as to give the driver good access. The suggested location would be near the current HVAC controls, however, that may be very tough on some models (Figs. 3a-3b). Route the CXP cable through the wall or cabinet and into the luggage compartment, then to the rear of the bunk for later connection. Figure 3a - Control/Display panel mounted Contro
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Peterbilt 379 Installation Guidelines Installing the Power Logic Box The Power Logic Box (PLB) is commonly mounted on the front wall of the driver’s side luggage box (Fig. 4). The PLB should be mounted in a relatively accessible location, within about 4 feet of the CHEB unit. The PLB comes with a mounting plate for mounting to a vertical surface. If you want to mount to a floor or other horizontal surface, remove the mounting plate (Fig. 5). The PLB must be mounted in a vertical positi
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Peterbilt 379 Installation Guidelines ROUTING CABLES The box contains several types of cables: • Wires enclosed in split loom • Flexible power cables • Phone-type cables The wires in split loom go to the CHEB unit. The flexible power cables go to the power distribution panel. The phone cable mounted on the CHEB unit plugs into the hole marked TSEP. The phone cable from the Control/Display plugs into the hole marked Display. All cables should be neatly routed and clipped to prevent chafin
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Peterbilt 379 Installation Guidelines INSTALLING THE RETURN AIR VENT The supplied return air vent(s) should be installed under the bunk, in the same area where the CHEB will be mounted. Your package may contain either one large grill with a mounting frame or two smaller 12.5" x 5.5" surface-mount grills. We suggest using a hole saw and reciprocating saw to cut out the hole for the large grill. If you received the two 12.5" x 5.5" grills instead of the one large grill, use a 4" hole saw t
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Peterbilt 379 Installation Guidelines INSTALLING THE SUPPLY AIR DISTRIBUTION For this installation, we will install 4" ducts. Depend- ing on the capacity of the system, you may have two or three vents supplied. You must use all vents supplied with the kit to get the rated air flow out of the system. This kit comes with a duct combiner that allows one 4" duct to be vented into the truck’s pre-existing air distribution system. Find the combiner (Fig. 9), and mount to the bottom of the plas
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Peterbilt 379 Installation Guidelines Installing the Plenum on the CHEB Using a 1/4" nut driver, remove the plastic 7" (or 5") oval hose adaptor. Find the 4" x 4" x 4" (or 4" x 4") distribution plenum. Reinstall the screws into the new plenum (Fig. 10). IMPORTANT! Refer to the Dometic installation manual for details in connecting ductwork to the discharge grills. Figure 10 - Installing the plenum on the CHEB ENGLISH 11
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Dometic Environmental Corporation P.O. Box 15299 I Richmond, VA 23227 USA I 804-746-1313 I Fax 804-746-7248 www.dometictruck.com I sales@dometictruck.com UNITED STATES & CANADA SERVICE ONLY Weekdays 8:00 am to 5:00 pm (Eastern Time) 804-746-1313 All other times 888-440-4494 ID: 2520 Rev. 20080226 For all other areas visit our website to find your nearest distributor.
