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Manual Dometic VN 780

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  • Dometic VN 780 - page 1

    ENGLISH Dometic Environmental Corporation Rev . 20071204 L-2485 REMOTE A UXIL IARY AIR COND ITION ING AND AIR DIST RIBUT ION S YSTEMS FOR V OL V O L -5 CHASSIS INST ALLA TION GUIDEL INES For V ol vo T ruck M odels VN 7 7 0, 7 80, 83 0, 880 ...

  • Dometic VN 780 - page 2

    COPYRIGHT © 2007 Dometic Corporation, All Rights Reserved. No part of this publication may be repr oduced, translated, stored in a retrieval system, or transmitted in any form or by any means electr onic, mechanical, photocopying, recording or otherwise without prior written consent by Dometic Environmental Corporation. Every precaution has been t ...

  • Dometic VN 780 - page 3

    ENGLISH 3 V olvo L-5 A/C - Air Distribution System DOMETI C TRUCK REMO TE A UXIL IARY A C S YSTEMS FOR V OL V O L -5 CHASSIS CONTENTS INTRODUCTION 4 INST ALLING THE CONTROL 4 Required T ools 4 Installing the Qt Digital Display 4 Mounting the Power Logic Box 5 Routing Cables 6 INST ALLING THE RETURN AIR VENT 7 INST ALLING THE SUPPL Y AIR DISTRIBUTIO ...

  • Dometic VN 780 - page 4

    ENGLISH V olvo L-5 A/C - Air Distribution System 4 The instructions that follow represent years of development of parts and procedures that make the system perform well and appear “factory-installed.” INTRO DUCTI ON INST ALL ING TH E CONT ROL Mount the contr ol in a place that provides the driver convenient access. An ideal location would be ne ...

  • Dometic VN 780 - page 5

    ENGLISH 5 V olvo L-5 A/C - Air Distribution System Mounting the Power Logic Box The Power Logic Box (PLB) will be mounted under the rear , center portion of the bunk (see Figure 2). T o accomplish this, rst remove the carpeted panel at the rear of the bunk. It is held in place by “Christmas trees” at each corner . Remove the backing plate fr ...

  • Dometic VN 780 - page 6

    ENGLISH V olvo L-5 A/C - Air Distribution System 6 onto the machine screws. Secure the box with four nuts and lockwashers. KEPS nuts are easiest to use. Routing Cables The box has several differ ent types of cables: • Wires enclosed in split loom • Flexible power cables • “Phone” type cables The “wires in split loom” will go toward th ...

  • Dometic VN 780 - page 7

    ENGLISH 7 V olvo L-5 A/C - Air Distribution System INST ALL ING TH E RETU RN AI R VENT The supplied return air vent should be installed under the bunk in the side panel, either on the passenger or driver side. The passenger side is recommended as there is less chance that it will get blocked by objects in the luggage compartment, and it will also a ...

  • Dometic VN 780 - page 8

    ENGLISH V olvo L-5 A/C - Air Distribution System 8 Figure 5. Location of installed ductwork Figure 6. Footwell removed ...

  • Dometic VN 780 - page 9

    ENGLISH 9 V olvo L-5 A/C - Air Distribution System Figure 7. Removal of sensor . Figure 8a. Four inch hole cut in V olvo duct. Figure 8b. Installation of grill and ducting. ...

  • Dometic VN 780 - page 10

    ENGLISH V olvo L-5 A/C - Air Distribution System 10 Locate the V4 RND BLACK 4" grill. Using two cable ties, secure the vanes so that they will not tur n. See Figure 8a and 8b. Use a length of the supplied weather stripping under the lip of the grill to pr event air from leaking after installation. Install the grill from the inside of the duct, ...

  • Dometic VN 780 - page 11

    ENGLISH 11 V olvo L-5 A/C - Air Distribution System Figure 10. Preparing to install grills in footwell cover . Figure 11. Location of cut out for ductwork. ...

  • Dometic VN 780 - page 12

    ENGLISH V olvo L-5 A/C - Air Distribution System 12 Figure 12a. T emplate for 4" duct for 10K unit 0 5 . 3 2.00 Cut with 3.5" holesaw Cut with reciprocating saw ...

  • Dometic VN 780 - page 13

    ENGLISH 13 V olvo L-5 A/C - Air Distribution System 3.50 0 0 . 4 Drill with 4" hole saw Cut with reciprocating saw Figure 12b. T emplate for 6" duct for 14K unit ...

  • Dometic VN 780 - page 14

    ENGLISH V olvo L-5 A/C - Air Distribution System 14 Installing the Plenum on the Front of the CHEB Using a ¼" nutdriver , remove the plastic 5" or 7" oval hose adaptor . Find the 4"x 6" (or 4"x4") distribution plenum. Install the weather stripping on the contact surfaces and place over the hole on the unit. Reins ...

  • Dometic VN 780 - page 15

    ENGLISH 15 V olvo L-5 A/C - Air Distribution System • One inboar d on the CHEB at the cor ner nearest the rear of the truck • One on the front, outboard • One on the outboard near the air distribution plenum • One on the front of the CHEB, inboard (near the factory HV AC unit) Use the “edge of unit” line to situate one of the moun- ting ...

  • Dometic VN 780 - page 16

    ENGLISH V olvo L-5 A/C - Air Distribution System 16 Be sure to get the face and the threads. Hand tighten the quick connect, making sure they thr ead correctly . Tighten with the correct wrenches (13/16", ¾", and 15/16"). Tighten to 10-12 ft-lbs. Note: Any hissing that is hear d during the tightening pr ocess, is caused by the tt ...

  • Dometic VN 780 - page 17

    ENGLISH 17 V olvo L-5 A/C - Air Distribution System Figure 16. Condenser installed on mounting plate. INST ALL ING TH E COND ENSER The Dometic condenser may be installed either under or behind the sleeper . These installations (and the parts in the kit) are for an installation under neath the sleeper . If you plan on mounting the generator and/or g ...

  • Dometic VN 780 - page 18

    ENGLISH V olvo L-5 A/C - Air Distribution System 18 ROUTI NG TH E REFR IGERAN T LINES AND CONDEN SER PO WER CABLE The refrigerant lines will pass over the exhaust pipe, then over top of the condenser mounting plate, and back ar ound to the quick connect. Connect the quick connects in the manner described previously . Secur e the refrigerant lines a ...

  • Dometic VN 780 - page 19

    ENGLISH 19 V olvo L-5 A/C - Air Distribution System Figure 17. Heat shield installed. Figure 18. Routing of refrigerent lines ...

  • Dometic VN 780 - page 20

    ENGLISH V olvo L-5 A/C - Air Distribution System 20 Figure 20. Routing of refrigerant lines. TESTI NG TH E INST ALL A TIO N Supply power to the power distribution panel with either shorepower or generator power . Look at the display panel and conrm that the display is lit up. Press the F AN button to activate the fan in manual mode. Check for ai ...

  • Dometic VN 780 - page 21

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  • Dometic VN 780 - page 24

    Dometic Environmental Corporation P .O. BOX 15299 I RICHMOND, VA 23227 USA I 804-746-1313 I F AX 804-746-7248 www .DometicT ruck.com I sales@DometicT ruck.com UNITED STA TES & CANADA SERVICE ONL Y 8:00 AM to 5:00 PM Eastern Time For all other areas visit our website to nd your nearest distributor . L-2485 Rev . 20071204 ...

Manufacturer Dometic Category Air Conditioner

Documents that we receive from a manufacturer of a Dometic VN 780 can be divided into several groups. They are, among others:
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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Dometic VN 780 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Dometic VN 780.

A complete Dometic manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Dometic VN 780, that we can find in the current document
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4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Dometic VN 780
5. FAQ - Frequently Asked Questions
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