Introduction

Specification

Standard Colours and Diameters

Midtherm Flue Systems Limited is an independent British manufacturing company producing a wide range of flue and chimneyproducts, along with associated components and services.

Established for over 30 years, Midtherm products are installed worldwide including Poland, Oman, Libya, Hong Kong China andthe USA.

All products are controlled by a Quality Assurance System certified to ISO 9000.

Product

Midtherm Vitrelux Vitreous Enamelled Flue Pipe is a single wall product manufactured and coated to the highest standards and issuitable for use on gas, oil and multi-fuel appliances, rating upto 50kW output.

Materials

A superior grade zero carbon steel is used to manufacture all the components in this range. Following manufacture, componentsare coated both internally and externally with a ground coat and a top coat of high temperature resistant and acid resistant vitre-ous enamel coating. Due to the chemical specification of the steel used for this product, it provides an excellent surface for theglass coating to adhere to.

Temperature and Corrosion Resistance

The finish of the product meets the high temperature and thermal shock requirements of BS 1344 Parts 1 and 7 and conforms toClass A for resistance to products of combustion when tested in accordance with BS1344 Part 3.

Jointing System

Midtherm Vitrelux Vitreous Flue Pipe has been designed with a quick and easy to use socket and spigot jointing system, which isleak proof when sealed and installed as recommended. (See page 7 for installation instructions).

Access for Cleaning

Lengths, 15o, 30o, 45o and 90o Elbows are available with or without doors from stock. The doors accommodate cleaning require-ments and are manufactured from brushed stainless steel, which allow the doors to be removed and re-fitted without chipping,whilst providing an aesthetic appearance.

Matt Black Gloss Black Gloss Brown Gloss White Diameter (mm) Equivalentdiameter (")

Code

Midtherm Vitrelux flue pipe is available from stock, in the following standard colours and diameters, unless otherwise stated:

Please Note: Use colours shown for indication only.

180200

100125150

78

456

0708

040506

A

250mm

75mm

60

65-45065-24565-145

125

75mm

Typical Applications

Midtherm Vitrelux range is ideally suited for use on gas, oil and multi-fuel appliances rating up to 50kW. The product is generally usedfor between 250mm and 1.5m to connect onto an existing chimney or a twin wall Class 1 chimney system. (Please see separatebrochures for flexible liners and our Class 1 chimney systems.)

The Manufacturer's Installation Instructions for your appliance will detail what diameter flue pipe is to be used from the appliance. Thisdiameter will remain constant up to termination, unless otherwise stated.

How To Order

Product Dimensions

Midtherm Products all have individual codes, which if detailed on incoming orders reduces sales order processing time.This helps accu-racy and can improve delivery times. Vitrelux products are coded as follows: -

Product Range Code / Item Code / Diameter (") prefixed with a '0' / Colour

For example: -

03 / 01 / 05 Matt Black Signifies: Vitrelux / 1000mm length / 5" diameter (125mm) / in Matt Black.

VP 1000 960mm 01VP 500 460mm 02VP 250 250mm 03VP 75 04

Effective Length ALength Without Door VP

Code

AVP 500 05AVP 250 06AVP 150 07

Adjustable Length AAdjustable Length AVP

Use in conjunction with pipe toform exact length

Code

VPD 1000 960mm 08VPD 500 460mm 09VPD 250 36

Effective Length ALength With Door VPD

Code

VPPE 75Effective Length APlain Ends VPPE

Complete With Clip (VC)Soot Box

Code

100 250 125125 280 140150 300 150180 330 165200 350 175

Bore

90 Degree Tee

Please Note:Tees are not supplied with a soot box, which must be ordered as a separate item.

(VT90) Code 10

B7590

100115

C

100 275 165125 315 190150 320 215180 380 240200 415 265

Bore

45 Degree Tee (VT45) Code 11

(SB) Code 12

(VC) Code 23

BA65706065

C

A

A

A

65

A

AB

C

A

CB

75

Optional extra for decorative finish onjoint only.

Clip

65

A

B

Elbows (Dimensions relate to centre line of pipe)

Bore 100 125

A 88 92

B 78 82

Diameter Code

30 Degree Elbow Without Door (VE30)

Item Code 130504

1509585

1809999

200102102

06 07 08

Bore 100 125

A 96 101

B 86 91

Diameter Code

45 Degree Elbow Without Door (VE45)

Item Code 140504

15010696

180112112

200116116

06 07 08

Bore 100 125

A 163 167

B 78 82

Diameter Code

30 Degree Elbow With Door (VED30)

Item Code 150504

15017085

18017499

200177102

06 07 08

Bore 100 125

A 156 161

B 86 91

Diameter Code

45 Degree Elbow With Door (VED45)

Item Code 160504

15016196

180175112

200156116

06 07 08

Bore 100 125

A 82 83

B 72 73

Diameter Code

15 Degree Elbow Without Door (VE15)

Item Code 170504

1508575

1808787

2008888

06 07 08

Bore 100 125

A 157 173

B 72 73

Diameter Code

15 Degree Elbow With Door (VED15)

Item Code 180504

15018075

18018287

20018388

06 07 08

Bore 100 125

A 100 115

B 135 145

Diameter Code

90 Degree Elbow Without Door (VE90)

Item Code 290504

150125160

180140175

200150185

06 07 08

Bore 100 125

A 125 140

B 160 170

Diameter Code

90 Degree Elbow With Door (VED90)

Item Code 190504

150150185

180165200

200175210

06 07 08

A

B

A

B

B

B

30

B

B

A

A

A

A

B

A

200

03/51/05

Bore

Offset Dimensions for Elbows

AGA 112 Degree Elbows

Other Components

B

100 125

40 4183 87

150

4190

180

4599

200

46102

128

VE15 / VE15VE30 / VE30VE45 / VE45 136 143 159 165

301 308311 324

314336

341370

347380

310

VE15 / VE15VE30 / VE30VE45 / VE45 327 345 383 397

Offset (O)

Two elbows without door

Elbow with door followed by elbow without door

Offset (O)

Height (H)

59 64121 124

66128

70137

70139

171

VED15 / VE15VED30 / VE30VED45 / VE45 178 185 191 193

376 398386 399

409411

436445

442455

370

VED15 / VE15VED30 / VE30VED45 / VE45 387 400 428 437

Height (H)

Diameter A B Offset (O) Height (H)100 114 99 195 292

112 Degree Elbow Without Door AGA112 Code 26

Diameter A B Offset (O) Height (H)100 114 99 195 292

112 Degree Elbow With Door AGAD112 Code 27

Matt Black 03/51/04Stainless Steel 03/50/04 03/50/05Pipe Size 4” Pipe 5”-8” Pipe

H

H

O

H

O

O

A

Bore 100 125

Increase To 125 150

Diameter Code

Pipe Increaser (VI) Code 20

Replacement Cleaning Access Doors

0605150180

18007 08

Provides a neat finish where the flue penetrates a non combustible wall.

Rosette (VR) Code 24

Standard length bracket will position flue225mm away from wall.Manufactured in stainless steel.

Bracket (VB) Code 21

Installation Notes

Vitrelux Vitreous Enamel flue pipe should only be usedto connect from the appliance into an existing linedchimney, or a class 1 twin wall insulated stainless steelchimney. Under no circumstances is Vitrelux to beused externally or to line an existing chimney.

We recommend no more than 1.5m of Vitrelux beinstalled from the appliance to the existing chimney,twin wall class 1 system or euroflex multifuel liner toavoid excessive condensation.

Vitrelux pipe should be fitted a minimum of threetimes diameter away from combustible material, e.g.150mm diameter pipe should be at least 450mm fromsuch material.

Vitrelux should be fitted with socket uppermost, spig-ot (crimped end) downward. Thus, no condensate canescape to spoil the appearance of the finished installa-tion.

Each joint must be coated with a jointing compound,High Temperature Fire Cement, (1200o C), to ensuregas-tight fit. A clip may be added to provide a deco-rative finish.

Where single wall flue passes through a brick wall, werecommend that a wall sleeve (short piece of duct thenext diameter up) should be used around the pipe.The gap can be sealed with non-combustible insulationmaterial.

“HT” TW RigidClass 1 System

Wall SupportBracket

SW to TW Adaptor

SupportBracket

StainlessDoor

MaximumRecommended dis-tance is 1.5m toexisting chimney orTwin Wall Class 1System

Euroflex FlexibleLiner

SW to TW Adaptor

SupportBracket

Blanking Plate

StainlessDoor

MaximumRecommendeddistance is 1.5mto existing chim-ney or Twin WallClass 1 System

OtherServices

Midtherm Profile

Copyright © Midtherm Flue Systems Ltd. All rights reserved

Certificate No. 5458

Masterflash Silicone and EPDM Flexible roof flashing.

Combivent Roof Mounted units for combined exhaust and low/ high level boiler room ventilation.

Windvent

Fluevent /Fan Dilution

Radiant TubeHeaters

CPS

Energy Efficient Roof mounted ventilation system.

Fan assisted flue units and dilution systems.

Gas fired radiant tube heaters for industrial andcommercial use.

Commercial and Industrial design, supply andinstallation service.Sub-Contract Laser Profiling.

SW316 fully welded flue system for a range of usesincluding condensing boilers.

Accessories Includes : Lead Slates, Draught Stabilisers,Terminals & Draught Divertors.

FlexibleProducts

Gas & Oil Flex packs, Euroflex Plus, Midflex

Rotorvent Rotorvent spinning terminals.

LD/GV Twin wall Aluminium flue system for use on gas andoil fired appliances.

PSSingle & twin wall systems with a welded inner linerfor pressures upto 1700mm wg, and a flangedproduct for higher pressures.

LT/SS , MT,HT

Twin wall insulated flue systems for a range of uses.

GVTwin wall gas vent flue for internal and external useon domestic gas fired appliances fitted with adraught diverter.

SW316 SW 316 heavy stainless steel rigid liner for gas,oiland solid fuel, available in 1mm and 22g.

TL Twin wall stainless steel flue pipe for oil, gas andsolid fuel appliances.

VitreluxVitrelux flue pipe with high temperature and acidresistant vitreous enamel coating. Available in fourcolours.

SW430 andSW304

Single Wall flue systems manufactured in 430 BAand 304 BA suitable for use on gas and oil firedequipment.

SW GalvSingle Wall Ductwork manufactured in aluzinc coat-ed mild steel, for ventilation, extraction and fluedilution systems.

LTZTwin wall flue for internal and external use on gasand oil fired domestic and small commercial appli-ances.

Midtherm has a wide range of products available that complywith Building Regulations, British and International Standards.

Our quality assurance system is accredited with ISO9002.

Product Range

TÜVBS 4543BS 715