Page 1
ENGLISH REMOTE AUXILIARY AIR CONDITIONING AND AIR DISTRIBUTION SYSTEMS FOR VOLVO L-4 CHASSIS INSTALLATION GUIDELINES For Volvo Truck Models VN630 and 670 Dometic Environmental Corporation Rev. 20071205 L-2518...
Page 2
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.
Volvo L-4 Installation Guidelines CONTENTS INTRODUCTION LOCATING THE COMPONENTS INSTALLING THE CONTROL INSTALLING THE RETURN AIR VENT INSTALLING THE SUPPLY AIR DISTRIBUTION ENGLISH...
This document contains supplemental guidelines for installing the Qt-series control and air dis- tribution for the Dometic auxiliary air conditioning system on the Volvo L-4 chassis. 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.
Volvo L-4 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).
Page 6
BTU model you are installing. IMPORTANT! Refer to the Dometic instal- lation manual for details on installing and connecting the CHEB and condensing unit.
Secure the box with four nuts and lockwashers. KEPS nuts are easiest to use (Fig. 7). IMPORTANT! Refer to the Dometic instal- lation manual for details on routing and connecting cables from the control/display panel to the PLB and CHEB.
INSTALLING THE RETURN AIR VENT The return air vent will be mounted under the bunk in the side panel on the passenger side. It will just fit between the panel supports on the backside of the kick panel. (Note: if your return air kit has the two 12½" x 5½"grills instead of the single square grill, either use a 4"...
For the L-4 chassis installation, you will use the factory-installed Volvo ductwork for supply air distri- bution. In addition, you will add one or two 4" ducts to extra discharge grills. The 10,000 BTU air conditioner uses one 4" duct, and the 14,000 BTU system uses two.
Page 10
Install the grill from the inside of the duct with the vanes pointing upward. Use two cable ties to secure the vanes so they will not turn. Drill holes in the duct transition, and pop rivet into place using the supplied rivets and brass washers (Figs.
Page 11
4 x 4" three-way plenum or 4 x 4" two-way plenum. Reinstall the screws into the new plenum (Figs. 18a- 18b). IMPORTANT! Refer to the Dometic instal- lation manual for details in connecting ductwork to the discharge grills and CHEB plenum.
Page 12
Dometic Environmental Corporation P.O. Box 15299 I Richmond, VA 2227 USA I 804-74-11 I Fax 804-74-7248 www.dometictruck.com I sales@dometictruck.com UNITED STATES & CANADA SERVICE ONLY 8:00 AM to 5:00 PM Easte n Time 24/7 A/C SERVICE HOTLINE: 5:00 PM to 8:00 AM 888-440-4494 L-2518 Rev.