Desa AND VM42 installation manual Introduction, Before YOU Begin, M36B,H/VM36B,H M42B,H/VM42B,H

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INTRODUCTION

Before You Begin

INTRODUCTION

Models M36(B,H), VM36(B,H), M42(B,H) and VM42(B,H) are vented gas fireplaces that use a millivolt gas control valve with a millivolt ignition system. A 6" B-Type venting system and a listed type vent cap are not supplied but are required for proper operation. See venting instructions on pages 9 and 10.

WARNING: This gas appliance must not be con- nected to a chimney flue servicing a solid fuel burn- ing appliance.

Models M36(B,H), VM36(B,H), M42(B,H) and VM42(B,H) are factory equipped for use with natural gas and must be converted when intended for use with propane/LP gas. A respective model PCBM-36 or PCBM-42 conversion kit may be purchased for simple conversion to propane/LP gas. See Accessories, page 29.

BEFORE YOU BEGIN

Before beginning the installation of your appliance, read these instructions through completely.

This DESA appliance and its approved components are safe when installed according to this installation manual and are operated as recommended by DESA. Unless you use DESA approved components tested for this appliance, YOU MAY CAUSE A FIRE HAZARD!

The DESA warranty will be voided by, and DESA disclaims any responsibility for the following actions :

A)Modification of the appliance or any of the components.

B)Use of any component part not approved by DESA in combi- nation with this appliance.

C)Installation and/or operation in a manner other than instructed in this manual.

D)The burning of anything other than the type of gas approved for use in this gas appliance.

The installation must conform with local codes or, in the absence of local codes, with the current National Fuel Gas Code, ANSI Z223.1/ NFPA 54 or with the current CAN/CGA B149 Installation Codes.

This appliance complies with ANSI Z21.50-2000and CSA 2.22- 2000 as Vented Gas Fireplaces and is listed and tested by the Canadian Standards Association to the above test standards.

WARNING: Installation of this appliance should be done by a qualified service person well trained in the installation of such appliances. You will also need a building permit from your local Building and Safety Commissioner before installing this appliance; other- wise your insurance co. may not cover this appliance.

NOTICE: This appliance is not intended to be used as a primary source of heat.

CAUTION: Do not connect appliance before pres- sure testing gas piping. Damage to gas valve may result and an unsafe condition may be caused.

The appliance and it’s individual shutoff valve must be discon- nected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psig (3.5 kPa).

The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psig (3.5 kPa).

For the purpose of input adjustment two pressure taps (for IN and OUT pressures) are provided on the gas control valve for test gauge connections to the appliance.

GAS RATING - NATURAL

 

M36(B,H)/VM36(B,H)

 

M42(B,H)/VM42(B,H)

 

Max. Input Rating:

40,000 Btu/Hr

 

45,000 Btu/Hr

 

Manifold Pressure:

3.5 in. WC (.87 kPa)

 

3.5 in. WC (.87 kPa)

 

Minimum Supply Pressure:

4.5 in. WC (1.12 kPa)

 

4.5 in. WC (1.12 kPa)

 

Maximum Supply Pressure:

10.5 in. WC (2.66 kPa)

 

10.5 in. WC (2.66 kPa)

 

 

 

 

 

 

Orifice Size:

# 30

 

# 29

 

 

 

 

 

 

GAS RATING - PROPANE/LP

 

 

Max. Input Rating:

40,000 Btu/Hr

 

45,000 Btu/Hr

 

Manifold Pressure:

10.0 in. WC (2.49 kPa)

 

10.0 in. WC (2.49 kPa)

 

Minimum Supply Pressure:

11.0 in. WC (2.74 kPa)

 

11.0 in. WC (2.74 kPa)

 

Maximum Supply Pressure:

13.0 in. WC (3.23 kPa)

 

13.0 in. WC (3.23 kPa)

 

Orifice Size:

# 52

 

# 50

 

 

 

 

 

 

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Contents For Your Safety Vent Decorative GAS FireplaceNatural GAS What to do if YOU Smell GASTable of Contents Safety InformationUnpacking Before YOU Begin IntroductionM36B,H/VM36B,H M42B,H/VM42B,H Product Specifications ModelSelecting Location PRE-INSTALLATION PreparationClearances Mantel Clearances and Wall Details M36B,H M42B,HVM36B,H VM42B,H M36B,H M42B,H VM36B,H VM42B,HInstalling Transition Pipe and Starter Collar FramingVenting Installation Typical B-Vent ConfigurationChecking for Proper Venting Min Roof PitchInstallation Wall Switch InstallationOptional Wireless HAND-HELD Remote Control Installation Installing ReceiverInstalling 9-Volt Battery in Hand-Held Remote Control Unit GAS Line HOOK-UPEmber and PAN Material Placement OvertightenLOG Placement for M36/VM36 Models Installing Logs 3LOG Placement for M42/VM42 Models Rest the lower part of log 5 on the log 4 and onCombustion AIR KIT Model AK4 Optional Installing Optional Glass Door AccessoryAppliance Enclosure Opening Vent Damper Removing Glass DoorsFor Your Safety Read Before Lighting Operating FireplaceLighting Instructions To Turn OFF GAS To AppliancePilot Assembly Inspecting BurnersOptional HAND-HELD Remote Operation Burner Flame PatternCleaning Maintenance Technical Service Wiring DiagramService Hints Replacement PartsTroubleshooting Observed Problem Possible Cause RemedyTroubleshooting Top Gas leak. See Warning statement atModels Illustrated Parts BreakdownVM42B,H Parts List Under Replacement Parts on page 20 of this manualLogset for M36B, H/VM36B, H Models Logsets for ModelsLogset for M42B, H/VM42B, H Models Owners Registration Form Postage Required Accessories Warranty Information