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TABLE OF CONTENTS

This water heater is equipped with the FVIR technology. Activation of the FVIR technology occurs when 

 

flammable vapours are drawn into the water heater. If the flammable vapour sensor detects the presence of 
flammable vapours when the water heater is operating, the gas control will switch to lock-out mode and the 
water heater will shut down. If the water heater is not operating when the flammable vapours are detected, the  
control will switch to lock-out mode and prevent the water heater from lighting. If the flammable vapours enter the 
combustion chamber and ignite, the flame arrestor will prevent these combustible vapours from igniting outside 
of the water heater. 

If flammable vapours are detected:
 • 

DO NOT

 try to light any appliance.

 •

 DO NOT

 touch any electrical switch, 

DO NOT

 use any phone in your building.

 • 

From a neighbour’s phone, immediately call your gas supplier.

 Follow the gas supplier’s instructions. 

 • If you cannot reach your gas supplier, call the fire department.

After the flammable vapours have been evacuated, contact a qualified service technician or the gas supplier to 
have the water heater inspected immediately. 

Replacement of a FVIR technology equipped water 

heater due to a flammable vapour shutdown is not covered under the terms of the Standard 

Basic Limited Warranty.

Flammable Vapour Sensor

Do not remove the protective cover. Do not spray water or leak detector 
products on this sensor. Do not expose this sensor to bleach or other liquid 
cleaning products. Avoid humid environments and freezing temperatures.

If the sensor detects the presence of flammable vapours, the gas control will 
switch to lock-out mode and the water heater will shut down. Do not try and 
restart the water heater. Have the water heater inspected immediately by a 
qualified service technician or the gas supplier.

WARNING

!!

!

!

Détecteur de vapeurs inflammables

Ne pas retirer le couvercle protecteur. Ne pas vaporiser d'eau ni de produits 
détecteur de fuites sur le détecteur. Ne pas exposer le détecteur à un 
javellisant ou à tout autre produit nettoyant liquide. Éviter les endroits 
humides et les températures sous le point de congélation.

Si le détecteur décèle la présence de vapeurs inflammables, le contrôle au 
gaz se verrouillera et le chauffe-eau cessera de fonctionner. Ne tentez pas 
de le remettre en marche. Faites inspecter le chauffe-eau immédiatement 
par un technicien de service qualifié ou le fournisseur de gaz.

AVERTISSEMENT

!!

FVIR technology equipped with a flammable vapour sensor and a flame arrestor.

Safety Information 

  . . . . . . . . . . . . . . . .  3

Installation Instructions

    . . . . . . . . . . . . .  4

 Altitude  . . . . . . . . . . . . . . . . . . . . 4
 Location 

  . . . . . . . . . . . . . . . . . . .  4

 

Minimum Clearances    . . . . . . . . . . . . .  4

 

Combustion and Ventilation Air Supply   . . . . .  5

 

Requirements for Unconfined Spaces  . . . . . .  5

 

Requirements for Confined Spaces   . . . . . . .  5

 

Louvers and Grilles   . . . . . . . . . . . . . .  6

 

Corrosive Atmospheres   . . . . . . . . . . . .  6

 Venting 

  . . . . . . . . . . . . . . . . . . . .  7

 

Venting connection to the water heater   . . . . . 7

 

Through-the-Wall Venting Installation   . . . . . .  9

 

Through-the-Roof Venting Installation  . . . . .  11

 

Pipe Assembly   . . . . . . . . . . . . . . . 11

 

Vent termination through-the-Wall  . . . . . . . 11

 

Vent termination through-the-Roof.   .   .   .   .   .   .   12

 

Restrictor Screens  . . . . . . . . . . . . . . 12

 

Condensation in the Venting System   . . . . .  13

 

Water Piping   . . . . . . . . . . . . . . . .  13

 

Temperature & Pressure-Relief Valve  . . . . .  13

 

Pressure Build-up in a Water System   . . . . .  13

 

Filling the Water Heater   . . . . . . . . . . .  14

 

Gas Connections   . . . . . . . . . . . . . .  14

 

Installation Instructions for  

 

Water Heaters Approved for Space  

 

Heating and Potable Water Heating    . . . . . .  15

 Wiring 

  . . . . . . . . . . . . . . . . . . . .  16

 

Installation Checklist    . . . . . . . . . . . . .  17

Operating Instructions

   . . . . . . . . . . . . . .  18

 

Operating the Water Heater    . . . . . . . . . .  18

 

Water Temperature Regulation   . . . . . . . . .  19

 

Out of Fuel   . . . . . . . . . . . . . . . . . .  20

General Maintenance

   . . . . . . . . . . . . . . .  20

 Housekeeping 

  . . . . . . . . . . . . . . . .  20

 

Safety System . . . . . . . . . . . . . . . . .  20

 Condensation 

  . . . . . . . . . . . . . . . . .  20

 

Burner Ignitor Assembly   . . . . . . . . . . . .  21

 

Temperature and Pressure-Relief Valve  . . . . .  21

 

Venting System Inspection  . . . . . . . . . . .  21

 Anodes  . . . . . . . . . . . . . . . . . . . .  21
 

Draining the Water Heater   . . . . . . . . . . .  22

 Vacation   . . . . . . . . . . . . . . . . . . .  22
 

Service Procedure  . . . . . . . . . . . . . . .  22

Replacement Parts

  . . . . . . . . . . . . . . . .  23

Troubleshooting Guide

  . . . . . . . . . . . . . .  24

Model Dimensions

  . . . . . . . . . . . . . . . .  27

Warranty

  . . . . . . . . . . . . . . . . . . . . .  28

Summary of Contents for UG50-58

Page 1: ...T try to light any appliance DO NOT touch any electrical switch DO NOT use any phone in your building From a neighbour s phone immediately call your gas supplier Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier For your records write the model ...

Page 2: ...ualified service technician or the gas supplier WARNING Détecteur de vapeurs inflammables Ne pas retirer le couvercle protecteur Ne pas vaporiser d eau ni de produits détecteur de fuites sur le détecteur Ne pas exposer le détecteur à un javellisant ou à tout autre produit nettoyant liquide Éviter les endroits humides et les températures sous le point de congélation Si le détecteur décèle la présen...

Page 3: ...or hurt you and others All safety messages will follow the safety alert symbol and either the word DANGER or WARNING Serious injury or death can occur if you do not follow the instructions immediately Serious injury or death can occur if you do not follow the instructions DANGER WARNING CAUTION AVERTISSEMENT ATTENTION DANGER WARNING CAUTION AVERTISSEMENT ATTENTION DANGER WARNING CAUTION AVERTISSEM...

Page 4: ...anufacturer based on national building codes has given the necessary instructions to prevent damage to the building Under no circumstances is the manufacturer to be held liable for any water damage in connection with this water heater This water heater is approved for installation on either a combustible or non combustible floor However should this water heater be installed directly on carpeting s...

Page 5: ...In Canada refer to CSA B149 1 1 All Air From Inside the Building see Figure 2 The confined space shall be provided with one opening of one 1 square inch per 1 000 Btuh 22 0 cm2 kW communicating directly with one or more rooms of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space for all the appliances installed in that confined space Confined Spa...

Page 6: ...ouvers and Grilles In calculating free area for ventilation and combustion air supply openings consideration must be given to the blocking effect of louvers grilles or screens protecting the openings Screens must not be smaller than 1 4 inch 6 4 mm mesh If the free area through a particular design of louver or grille is known it should be used in calculating the size of opening required to provide...

Page 7: ...nt piping make sure that the venting system layout has been properly planned Verify that the location of the water heater respects all clearances from combustible material all venting requirements see Table 1 and that the vent terminal will be installed as specified by all local codes or in the absence of local codes CSA B149 1 Natural Gas and Propane Installation Code in Canada and or the Nationa...

Page 8: ...venting 3 venting 4 venting Figure 9b Increaser Appliance adaptor Appliance Adaptor Clamp Appliance Adaptor Clamp Increaser Figure 9b PolyPro DuraVent Figure 9 The blower assembly must always have the three 3 inch 7 6 cm rubber transition fitting An increasing coupling 3 X 4 is necessary for a four 4 inch 10 2 cm venting system This coupling must be installed as close as possible after the rubber ...

Page 9: ...t all horizontal runs have a minimum rise of 5 8 inch per foot 56 mm m of run see Figure 8 Follow the vent pipe manufacturer s instructions for the appropriate venting support DURAVENT POLYPROPYLENE PIPE PolyPro single wall gas vent system PolyPro InnoFlue Make sure that all horizontal runs have a minimum rise of 1 4 inch per foot 21 mm m of run see Figure 8 Follow the vent pipe manufacturer s ins...

Page 10: ...enter line of the terminal E Clearance to unventilated soffit F Clearance to outside corner G Clearance to inside corner H Clearance to each side of center line extended above meter regulator assembly I Clearance to regulator vent oulet 3 feet 91 cm from the regulator vent outlet and 3 feet 91 cm horizontally from the vertical center line of the regulator vent outlet to a maximum vertical distance...

Page 11: ... fitting to be connected to make sure they fit properly 4 Clean the pipe fitting with the proper primer or cleaner 5 Apply a thin coat of cement inside the fitting 6 Apply a liberal coat of cement to the vent pipe leaving no voids 7 QUICKLY assemble parts while cement is fluid If you wait too long re coat pipe fitting 8 Push the vent pipe completely into the PVC or CPVC coupling turning as it goes...

Page 12: ...NGER WARNING CAUTION AVERTISSEMENT ATTENTION In freezing weather check for snow accumulation around the water heater vent terminal where it passes through the outside wall or roof The open end of the terminal must be installed at least twelve 12 inches 30 5 cm above the highest anticipated snowfall to prevent blockage by snow Restrictor Screens Figure 13 PVC AND CPVC VENT SYSTEM PolyPro InnoFlue A...

Page 13: ...tm tape or a good food grade of pipe joint compound and ensure all fittings are tight It is imperative that open flame is not applied to the inlet and outlet fittings as heat will damage or destroy the plastic lined fittings This will result in premature failure of the fittings which is not covered by the warranty Temperature and Pressure Relief Valve To protect from excessive pressure and or temp...

Page 14: ...own on the water heater rating plate Failure to follow this instruction can result in property damage personal injury or death The gas piping must be installed as indicated in Figure 10 For the correct size of piping for this water heater consult CSA B149 1 National Gas and Propane Installation Codes in Canada and or the National Fuel Gas Code ANSI Z223 1 NFPA 54 in the United States Only new pipi...

Page 15: ...d have been in the past treated with chemicals for cleaning or sealing the system 3 If this water heater is to be used for space heating make sure that all safety codes are respected Pay special attention to safety valve pressure and expansion tanks 4 Do not use toxic chemicals to clean the potable water heating system 5 Where water temperature in excess of 140 F 60 C is required for a space heati...

Page 16: ...the wires have been installed correctly see Figure 16 Make sure that none of the wires are grounded have split or are broken Verify that all wiring connections are properly secured as there is a possibility that they have become loose during transport If any of the original wiring needs replacing use only 18 AWG type or greater wire that is approved for 221 F 105 C INSTALLATION INSTRUCTIONS Wiring...

Page 17: ... installed with a minimum rise as specified Has all the vent piping been secured with the appropriate primer and solvent based cement when necessary Has the venting been supported at the proper intervals Have precautions been taken against condensation flowing into the power venter Water Piping Is the dip tube installed in the cold water inlet Has a temperature and pressure relief valve been insta...

Page 18: ... water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water 1 STOP Read the safety information above to the left on this label 2 Toggle the ON OFF switch located on the gas control to the ON position 3 Set the thermostat to the lowest setting by pressing the COOLER and HOTTER buttons at...

Page 19: ...ature adjustment buttons 2 If this is the first time that the control has been used the leftmost green indicator will be illuminated indicating the water temperature setting of approximately 70 F 21 C Ifthecontrol has been in operation for some time the water temperature setting may indicate a diffe rent temperature See Figure 17 for an explanation of what each of the temperature indicators mean T...

Page 20: ... flammable vapours before they enter the combustion chamber and ignite If the FV sensor detects the presence of flammable vapours while the water heater is operating the gas control will switch to lock out mode and the water heater will shut down If the water heater is not operating when the flammable vapours are detected the control will switch to lock out mode and prevent the water heater from l...

Page 21: ...ce technician Anodes This water heater is equipped with two 2 magnesium anodes that are designed to prolong the life of the glass lined inner tank The anodes are slowly consumed protecting the glass lined tank from corrosion They should be checked every two 2 years If more than half of any anode has been consumed it should be replaced Instructions on how to change an anode can be obtained from the...

Page 22: ...hut off for an extended period of time before putting it back in operation Make sure that the water heater is completely full of water and that the cold water supply manual shut off valve is open before lighting the burner Service Procedure If you are experiencing problems with your water heater follow these three easy steps 1 Consult the Troubleshooting Guide contained in this manual see Page 24 ...

Page 23: ... 5 Burner assembly 6 Inner access door kit 7 Outer access door 8 Resettable thermal switch 9 Brass drain valve 10 Overflow tube 11 Closed end dip tube with heat trap 12 Magnesium anodes 2 13 Temperature pressure relief valve 14 Flue baffle 15 Blower assembly 16 High limit switch 17 Rubber transition fitting 18 Vacuum switch 19 Outlet nipple with heat trap 1 1a 1b 2 3 4 7 9 10 11 12 13 14 15 19 5 8...

Page 24: ...tage to the water heater Check and repair 7 The gas valve driver circuit 1 Turn off the power to the water heater for ten 10 seconds and then back on 2 If the above step did not clear the error replace the gas control 8 The internal microcomputer 1 Turn off the power to the water heater for ten 10 seconds and then back on 2 If the above step did not clear the error replace the gas control 9 The in...

Page 25: ...confined area Provide fresh air ventilation The burner flame is too high Insufficient secondary air Provide fresh air ventilation Orifice too large Replace with correct orifice Defective gas control Replace with new gas control The flame burns at the orifice Low gas pressure Check with gas utility company Defective gas control Replace with new gas control High operating costs Gas control set too h...

Page 26: ...mbustion odours Insufficient secondary air Provide fresh air ventilation Heater installed in a confined area Provide fresh air ventilation Flue clogged Clean Check for source of trouble and correct Smoking and carbon formation sooting Insufficient secondary air Provide fresh air ventilation Low gas pressure Check with gas utility company Burner flame yellow lazy Refer to The burner flame is yellow...

Page 27: ... E L F C D MN A G DIMENSIONS inches cm Models A B C D E F G H I J K L M N All UG50 7 1 8 18 41 104 50 7 8 129 12 3 8 31 52 132 60 3 4 154 3 4 7 6 10 2 24 61 8 20 15 6 90 42 1 4 107 8 3 4 22 2 3 8 6 MODEL DIMENSIONS ...

Page 28: ... valves etc 10 To any damage caused by not having the unit installed adjacent to a free flowing drain or in a pan or basin connected to such free flowing drain 11 For all equipment operated at water temperatures exceeding the maximum operating setting of the thermostat and or the high limit control at a pressure exceeding the one listed on the rating plate for equipment subject to a water hammer e...

Page 29: ...ected to such free flowing drain 11 For all equipment operated at water temperatures exceeding the maximum operating setting of the thermostat and or the high limit control at a pressure exceeding the one listed on the rating plate for equipment subject to a water hammer effect that reverses the bottom of the tank units that are installed in a closed looped system without any adequate expansion ta...

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