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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
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COPYRIGHT © 2007 Dometic 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 errors and omi
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Volvo L-4 Installation Guidelines CONTENTS INTRODUCTION 5 LOCATING THE COMPONENTS 6 INSTALLING THE CONTROL 8 INSTALLING THE RETURN AIR VENT 9 INSTALLING THE SUPPLY AIR DISTRIBUTION 10 ENGLISH
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Volvo L-4 Installation Guidelines INTRODUCTION 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. Do not attempt to install any components until you read and understand the instruction in both manuals.
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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). The two units are connected by precharged refriger- ant lines with quick-connect fittings. For the Volvo L-4 chassis, we recommend placing the CHEB unit in the passenger-side luggage
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Volvo L-4 Installation Guidelines We recommend you install the return air grill under the bunk in the side panel on the passenger side. This will make it less likely for the air flow to be blocked by something in the luggage compartment, and will also give you easy access to the quick-connect refrigerant 5" (max.) fittings with a wrench. The supply air will be routed through the Volvo duct- work, and will also be ducted to one or two additional discharge grills, depending on the BTU model
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Volvo L-4 Installation Guidelines INSTALLING THE CONTROL Installing the Control/Display Panel For the L-4 chassis, we recommend mounting the Control mounted control/display panel on the wall above the drivers’ side cabinet (Fig. 5); remove the truck’s HVAC panel to access the area to make it easier to route the cabling to the Power Logic Box (PLB). The CXP cable will run down inside the wall and across the luggage compartment to the PLB. Installing the Power Logic Box The PLB will be mount
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Volvo L-4 Installation Guidelines 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" hole saw to cut at least two holes behind each grill or use a reciprocating saw to cut out the rectangular holes for these grills.) Locate the
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Volvo L-4 Installation Guidelines INSTALLING THE SUPPLY AIR DISTRIBUTION 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. Connecting to the Volvo Ductwork First, remove the rubber duct transition that is located in the passenger-side luggage compartment (Fig. 11). It i
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Volvo L-4 Installation Guidelines 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. 15a-15b). Push the duct and grill back into the hole in the Volvo duct. Attach the 4" duct with a hose clamp. Push the duct over the grill until it is tight against the transition, and then tighten the cla
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Volvo L-4 Installation Guidelines Installing the Remaining 4” Ductwork and Grills The location for the additional discharge grill or grills (one for the 10,000 BTU AC and two for the 14,000 BTU AC) is up to the installer or owner. Based on our experience with this truck chassis, we recommend the following (Fig. 17): Up through the passenger-side cabinet Low on the floor, driver’s side, in front of the cabinets You will need to install a new plenum on top of the CHEB unit. Use a ¼" nut driv
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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 Eastern Time 24/7 A/C SERVICE HOTLINE: 5:00 PM to 8:00 AM 888-440-4494 For all other areas visit our website to find your nearest distributor. L-2518 Rev. 20071205
