FLOWMAX 170 Instruction Manual

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Installation, operating, commissioning and maintenance instructions.

Water heaters for other than recreational vehicle installation

Instruction Manual

for model

FLOWMAX - 170

Condensing water heater

174,000 BTU

WARNING

If the information in these instructions is not followed exactly, a fi re or explosion may result, causing p roperty damage, personal injury or death.

-Do not store or use gasoline or other flammable va pours and liq uids in the vicinity o f t his or any other applianc e.

-WHAT TO DO IF YOU SMELL GAS

●Do not try t o light any applia nce.

●Do not touch any elect rical switch; do not use any phone in your building.

●Immediately ca ll yo ur gas supplier from a neighbour ’s phone. Follow the gas supplie r ’s instruc tions.

●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.

CONTENTS

Pages

1. General information

1.1 General warnings 1

1.2 Product conformity 9

2. Technical characteristics

2.1 Technical data 10

2.2 Dimensions 11

2.3 Internal parts of the water heater 12

2.4 Water cir cuit 13

2.5 Circulation pump head/flow graph 14

2.6 Printed circuit board – Technical characterist ics 15

2.7 Control panel 15

3. Installation (authorized personnel)

3.1 Reference standard 16

3.2 Unpacking 17

3.3 Installation water heater 18

3.4 Fixing the water heater 19

3.5 Water connections 20

3.6 Domestic Hot Wat er Circuit/Hard W at er Warning/ Condensat e Dr ain 21

3.7 Schematic of Piping Installation 23

3.8 Gas connection 25

3.9 Electrical connections

3.10 Venting connections 29

4. Commissioning the appliance (authorized personnel)

4.1 General warnings 36

4.2 Filling the system 37

4.3 Flushing the system 38

4.4 Filling the condensate trap 38

4.5 Starting up the water heater 39

5. Regulating the appliance (authorized personnel)

5.1 Parameters table 40

5.2 Setting the parameters 41

5.3 Gas Data 48

5.4 Regulating the Gas Valve Offset 49

CONTENTS

Pages

6. Maintenance (authorized personnel)

6.1 General warnings 50

6.2 Maintenance 50

6.3 Water heat er inspection 50

6.4 Accessing the water heater 52

6.5 Flushing out the primary side 52

6.6 Draining the central heating and domestic hot water s ystem 53

6.7 Maintenance operations 54

6.8 Wiring diag r ams 60

6.9 D.H.W Sensor Connect ion 66

6.10 Troubleshooting 67

6.11 Diagnostics 68

6.12 Parts list 78

7. Warranty

7.1 Terms and Condition of Sale 79

7.2 Warranty Registrat ion For m 81

7.3 Warranty Parts Request Form 82

GENERAL INFORMATION

1. GENERAL INFORMATION

1.1 General warnings – Installation

Read all s afety warnings in the “Instruction Manual”. The additional safety issues outlined below must also be

followed completely when installing this FLOWMAX Combination Water heater.

Failure to remove or maintain the area free of combustible material, gasoline and other flammable liquids or

vapours can result in severe personal injury, death or substantial property damage. All applicable local, state, national and provincial codes, ordinances, regulations and laws must be observed. For installations in Massachusetts – code requires the units to be installed by a licensed plumbing or gas fitter. The appliance cannot operate without the correct amount of air for combustion. Please make sure there is

sufficient inflow and outf low of air for ventilation; never obstruct the flow of ventilation air. Failure to provide the

proper amount of combustion air can result in a fire or explosion and cause death, serious bodily injury or

property damage. If an external electrical source is utilized, the appliance, when installed, must be electrically grounded in

accordance with local codes or, in the absence of local codes, with the National Electrical Codes ANSI/NFPA 70

and or the CSA C22.1 Canadian Electrical Code. Follow all local codes and/or the most recent edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in

the USA or the Natural Gas and Propane Installation Code in Canada (CAN/CSA B149.1). This unit is designed for indoor installations. DO NOT operate this unit without the vent piping connected.

Exhaust gases must be completely expelled out of the building. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to

inspect the appliance and replace any part of the control system and any gas control which has been

underwater. Be sure not to reverse the water and gas connections as this may damage the gas valves. Water temperatures over 125⁰F can cause severe burns instantly or death from scalding. If the proposed water

heater outlet temperature is above 125⁰F, a thermostatically controlled mixing valve (or a temperature limiting

valve) for reducing point of use water temperature is recommended to reduce the risk of scald injury. Contact a

licensed plumber or the local plumbing authority for further information. The appliance s hould be located in an area where leakage within the unit or at its connecti ons will not result in

damage to the area adjacent to the appliance or to lower floors of the structure. FLOWMAX will not be

responsible for any damage resulting from leaking if adequate drainage is not provided. W hen such locations

cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the

appliance. Do not use this combination water heater for any purpose other than water heating and space heating. The fl ow of combustion air and ventilation to the water heater must not be obstructed. The water heater area

must be kept clear and free from combustible materials, gasoline and other flammable vapours and liquids. If the water quality is known to be highly acidic and/or extremely hard, water treatments (ie water softeners and

filtration) are recommended to maintain full warranty. Consult the local water authority. DO NOT over-tighten fittings, as pipe and/or fitting damage may occur causing leakage. DO NOT install water heater where subject to vibrations. For other than a direct vent appliance, the appliance must be loc ated as close as possible to a c himney or gas

vent. Should overheating occur or the gas supply fails to shut off , turn the manual gas control valve to the appliance.

Contact a Service Technician immediately. Clearance must be in accordance with the local installation codes and the requirements of the gas supplier.

GENERAL INFORMATION

Never operate the heater unless it is vented to the outdoors and has adequate air supply to avoid risks of

improper operation, fire, explosion or asphyxiation. DO NOT ins tall this water heater directly on a carpeted floor. A f ire hazard may result. The water heater shall

be installed on a metal or wood panel extending beyond the full width and depth of the water heater by at least 3

inches (76.2mm) in any direction or, if the water heater is installed in an alcove or closet, the entire floor shall be

covered by the panel. For safe operation, an ample supply of air must be provided for proper combustion and ventilation in accordance

with the National Fuel Gas Code ANSI Z223.1/NFPA 54 National Fuel Gas Code CSA/B149.1 Natural Gas and

Propane Installation Codes or applicable provisions of the local buil ding codes. An insuffic ient supply of air may

result in a yellow, luminous burner flame, carboning or sooting of the heat exchanger, or create a risk of

asphyxiation. Do not obstruct the flow of combustion and ventilation air. This unit is not intended to operate at gas supply pressures other than those shown on the rating plate.

Exposure to higher gas supply pressure may cause damage to gas valves, which can result in fi re or explosion.

If over-pressure has occurred, such as through improper testing of gas lines or emergency malfunction of the

supply system, the gas valves must be checked for safe operation. A thermostatic mixing valve must be added to this system to prevent scalding, if regulated by local codes and

authorities.

Check the Rating Plate

FLOW MAX units come from the factory configured for use with natural gas. Prior to installation, check the

rating plate of the water heater to ensure the unit matches gas type, gas pressure, water pressure and electrical

supply. If the unit does not match the requirements, do not install. Be sure the gas type and electricity voltage match the rating plate. There is a risk i n using fuel burning appliances in rooms or areas where gasoline, other flammable liquids or

engine-driven equipment or vehicles are stored, operate or are repaired. Flammable vapours are heavy and

travel along the floor and may be ignited by the igniter or main burner flames causing fire or explosion. Some

local codes permit operation of gas appliances if ins talled 18 inches or more above the floor. This may reduce

the risk if loc ation in such an area cannot be avoided. Flammable items, pressurized containers or any other

potential fire hazardous articles must never be placed on or adjacent to the water heater. Open containers of

flammable materials should not be stored or used in the same room with the water heater.

Do not install the FLOWMAX water heater in areas with excessive high humidity.

Do not install the unit in location where there is excessive humidity, such as a bathroom, damp crawl space and

other areas with high levels of humidity. This may cause the unit to malfunction.

To avoid possible electrical s hock, DO NOT touch the internal components of the water heater or the power

cord with wet hands. DO NOT splash excessive water on the water heater when cleaning, as they are water resistant, not water

proof. Professionally qualified personnel in accordance with current laws and standards and in line with the

manufacturer’s instructions must install the appliance. The commissioning of the water heater and any subsequent works carried out on the appliance must be

effected by an appropriately qualified technician. The appl iance must be used solely for the purpose f or which it has been designed and manufactured: central

heating and domestic hot water production. Any other use is deemed as improper and as such dangerous.

Under no circumstances will the manufacturer be held responsible for damage or injury to persons or animals

caused by errors in the installation and/or use of the appliance, or through non-compliance with current local

and national standards and/or the manufacturer’s instructions. The install ation, operation and maintenance manual forms are an integral and essential part of the product and

must be kept with the appliance always. The warnings contained i n this chapter have been written for the appliance user, the installer and the service

technician.

GENERAL INFORMATION

The “operating instructions” chapter of this manual must be read carefully as it provides information on the

operation and the operating limits of the appliance.

• After the removal of all the packaging, check that the appliance has not been damaged. In case of doubt, do not attempt to use the product but refer to the supplier. Packing materials (cardboard box, wooden crate, nails, staples, plastic bags, polystyrene, etc.) must not be left within reach of children in that these items represent a potential hazard and must be disposed of in a responsible manner.

• Before carrying out any cleaning or maintenance operations, disconnect the appliance from the mains electricity supply by switching off at the main switch and/or any other isolating device.

• In the case of a fault and/or malfunction in the appliance, shut down the s ystem. Do not interfere with or attempt any repairs. Call for professionally qualified technical assistance only.

• Any warranty repairs to the appliance must be carried out exclusively by the manufacturer’s authorized service dealers using original spare parts. Non-compliance with the above requirements may compromise the safety of the appliance and invalidate the warranty. In order to guarantee the efficiency of the appliance and its c orrect operation, it must be serviced regularly by professionally qualified personnel in line with the manufacturer’s instructions .

• Only original accessories or optional extras (including electrical parts) must be used with the applianc e.

• Should there be a smell of gas present in the room where the appliance is i nstalled, DO NOT attempt to activate any

electric switches, telephones or any other equipment that may cause sparks. Open doors and windows immediately to create a current of air and ventilate the room. Shut-off the main gas supply valve (at the meter), or on the cylinder in the case of bottled gas, and call an authorized service centre.

• Do not attempt to interfere with the appliance in any way.

• As dictated by current legislation, this appliance must be installed exclusively by qualified personnel. Before

starting the water heater for the first time, make sure that it is connected to a water supply and central heating system compatible with its performance characteristics.

• Prior to start-up, the central heating pipes should be flushed to remove any residues that could compromise the operation of the appliance.

• The domestic power supply must be checked by a qualified electrician to ensure that it can support the maximum power absorption of the appliance, as indicated on the appliance rating plate (positioned on the casi ng). In particular, make sure that the cable ratings are adequate for the power absorbed.

• Do not use adapters; multiple sockets or extension leads to connect the appliance to the power supply.

• The appliance must be connected to the mains power supply through an appropriate electrical isol ator in accordance

with the current wiring regulations.

• If the cable is damaged in any way, switch off the appliance and have the cable replaced by a suitably qualified technician.

• When the appliance is no longer required for use, switch off the main power supply, to switch all electrical components off (circulating pump, burner, etc).

GENERAL INFORMATION

Important: Carbon Monoxide Detectors

Many jurisdictions require the installation of carbon monoxide detectors in building where a side wall vented fuel burning appliance is installed. Installers must abide by local code requirements regarding the installation of CO detectors. The use of a certified carbon monoxide detector is recommended but not required by FLOWMAX.

“In the State of Massachusetts only”

(a)For all horizontally vented gas fuelled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned and operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:

1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the si de wall horizontal vented gas fuelled equipment, the installing plumber or gas fitter shall observe that a hard wired

carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas

equipment is to be installed and on each additional level of the dwelling, building or structure served by the equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors.

a. In the event that the side wall horizontally vented gas fuelled equipment is installed in a crawl space

or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.

b. In the event that the requirements of this subdivision cannot be met at the time of completion of

installation, the owner shall have a period of 30 days to comply with the above requirements; provided, however, that during said 30 day period a battery operated carbon monoxide detector with alarm shall be installed.

2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.

3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fuelled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.

4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fuelled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.

GENERAL INFORMATION

1.2 Product conformity

All FLOWMAX water heaters are ETL certified and possess technical and functional characteristics that comply with the following standards:

Gas fired water heaters also comply with the following directives: American National Standard/CSA Standard for Gas Water Heaters Volume III, Storage W ater Heaters with input

Ratings above 75,000 Btu per Hour, Circulating and Instantaneous. Conform s to ANSI STD Z21.10.3, certified to CSA STD 4.3.

The materials used suc h as copper, brass, stainless steel, etc. form a compact, homogeneous, highly functional unit that is easy to install and simple to operate. In its simplic ity, the wall-mounted appliance is equipped with all the appropriate accessories required to m ake it a fully independent water heater capable of satisfying domestic hot water production and central heating needs. All water heaters are fully inspected and are accompanied by a quality certificate, signed by the inspec tor, and a guarantee c ertific ate. T his m anual m us t be k ept in a safe plac e and must

accompany the water heater at all times.

FLOWMAX will not be held responsible for any misinterpretation of this manual resulting from the inaccurate translation of same.

FLOWMAX will not be held responsible for the consequences in the case of non-observance of the instructions contained in thi s manual or in the case where actions not specifically described herein are undertaken.

TECHNICAL CHARACTERISTCS

2. TECHNICAL CHARACTERISTICS

2.1 Technical data

Model FLOWMAX 170

Heat Input max

kW - BTU/hr

51 - 174019

Heat Input min

kW - BTU/hr

12 – 40946

Heat Output max - 122/86°F

kW - BTU/hr

54.5 – 185859

Heat Output max - 167/140°F

kW - BTU/hr

49.9 – 170198

Heat Output min - 167/140°F

kW - BTU/hr

11.65 - 39758

Efficiency 100% (full load 167/140°F)

97.8

Central Heating circuit

Central Heating water temperature setting (min-max)

°C – °F

30-75 / 25-40 – 86-167 / 77-104

Max. heating working temperature

°C – °F

75/167

Expansion vessel capacity

gal

1.58

Max. working pressure (heating)

bar - psi

2.1 - 30

Min. working pressure (heating)

bar - psi

0.3 - 4.29

Domestic Hot Water circuit

D.H.W. temperature setting (min-max)

°C – °F

35-60 – 95-140

Max. Hot water working pressure

bar - psi

6 - 86

Min. Hot water working pressure

bar - psi

0.5 - 7.16

D.H.W. flow rate at ∆T 45°F (25°C)

l/min - gal/min

30 - 7.93

D.H.W. flow rate at ∆T 72°F (40°C)

l/min - gal/min

18.8 – 4.95

Dimensions (Water heater casing size)

Width

19.3

Height

27.6

Depth

18.5

Weight (net)

120

Hydraulic connections

Central Heating Flow connection

NPT

3/4"

Central heating Return connection

NPT

3/4"

Cold water mains connection

NPT

1/2"

D. Hot water connection

NPT

3/4"

Gas connection

NPT

3/4"

Gas Supply

Natural gas G 20

Inlet pressure

mbar - psi

20 - 0.29

Gas consumption

m3/h - ft3/h

5.40 – 190.7

Electrical specifications

Power supply

V/Hz

120/60

Electrical power consumption

225

TECHNICAL CHARACTERISTCS

18.5

5.313.2

19.3

27.6

8.3

2.7

HWO G

CWI

2.2 Dimensions

LEGEND

HEATING INTAKE

Ø 3/4"

HEATING OUTLET

Ø 3/4"

GAS

Ø 3/4"

CWI

COLD WATER INLET

Ø 1/2"

HWO

HOT WATER OUTLET

Ø 3/4"

CONDENSATE DRAIN

Ø 0.98 in

TECHNICAL CHARACTERISTCS

2.3 Internal parts of the wat er heater

LEGEND

1. AIR PRESSURE SWITCH

2. SAFETY THERMOFUSE

3. HEATING SENSOR

4. HEATING SAFETY THERMOSTAT

5. IONIZATION ELECTRODE

6. EXPANSION TANK

7. IGNITION TRANSFORMER

8. FLOWMAX BURNE R UNIT (GAS MANIFOLD + BURNER)

9. AUTOMATIC AIR VENT VALVE

10. FAN

11. PUMP

12. CONDENSATE TRAP

13. AIR VENT VALVE 1/4

14. SAFETY VALVE 3/4

15. D.H.W. SENSOR

16. EXHAUST HOOD

17. PRIMARY CONDENSING HEAT EXCHANGER

18. D.H.W. EXCHANGER

19. IGNITION ELECTRODE

20. VENTURI

21. DIVERTER ACTUATOR VALVE

22. ELECTRONIC GAS VALVE

23. WATER PRESSURE SWITCH

24. NO-RETURN VALVE

25. WATER PRESSURE GAUGE

26. FILLING TAP

27. ELECTRONIC FLOWSWITCH

1 2

5 6

10 11

13 14 15

3 4

18 19

20 21

22 23

24 25

21 27

23 24

TECHNICAL CHARACTERISTCS

2.4 Water circuit

LEGEND

1. SAFETY THERMOFUSE

2. AIR PRESSURE

SWITCH

3. HEATING SAFETY THERMOSTAT

4. HEATING SENSOR

5. FLOWMAX BURNE R UNIT (GAS MANIFOLD+BURNER)

6. P RIMARY CONDENSING HEAT EXCHANGER

7. EXPANSION VESSEL

8. FAN

9. ELECTRONIC GAS VALVE

10. AUTOMATIC AIR VENT VALVE

11. PUMP

12. AIR VENT VALVE 1/4

13. PRESSURE RELIEF VALVE

14. EXHAUST HOOD

15. IGNITION TRANSFORMER

16. IGNITION ELECTRODE

17. IONIZATION ELECTRODE

18. DIVERTER ACTUATOR VALVE

19. D.H.W. SENSOR

20. VENTURI

21. D.H.W. EXCHANGER

22. CONDENSATE TRAP

23. ELECTRONIC FLOWSWITCH

24. WATER PRESSURE SWITCH

25. CONDENSATE DRAIN PIPE

26. FLOW LIMITER

27. FILLING TAP

28. WATER PRESSURE GAUGE

29. NO-RETURN VALVE

LEGEND

HEATING INTAKE

HEATING OUTLET

GAS

CWI

COLD WATER INLET

HWO

HOT WATER OUTLET

CONDENSATE DRAIN

G CWIHWO

15 16

17 18

19 20

22 23

26 27

28 29

TECHNICAL CHARACTERISTCS

2.5 Circulati on pum p he a d/flow gr a ph

Pump head

I, II, III Pump speed

Water heater losses

III

0 2 4 6 8 10

Water flow (US gpm)

Head (ft)

TECHNICAL CHARACTERISTCS

2.6 DIGITECH® printed circ uit board – SM 20021

Technical characteristics

Adjustments possible by service personnel only

• Standard (86-167°F) / reduced (77-104°F) central heating temperature

• Water hammer prevention function

• Central Heating timer - (adjustable from 0 to 7,5 minutes)

• Central Heating pump overrun timer

• Domestic Hot Water pump overrun timer

• Minimum Gas pressure setting

• Maximum Heating Load

• D.H.W. temperature setting 95-160°F

User settings

• On/Off

• Heating Temperature setting (86-167°F) – (77-104°F)

• D.H.W. temperature setting (95-140°F) – (95-160°F)

• Summer only mode / Winter only mode / Summer + Winter mode selection

Operation/Functions display

• Lock-Out

• Water deficiency indicator

• Temperature display

 When the water heater is switched off at the switch on the control panel, the word OFF appears on the

display. The D.H.W and central heating frost protec tion system, nevertheless, remain enabled. If the water heater was previously on, it is switched off and the post-ventilation, pump overrun , circulation pump and three-way valve inactivity protection functions are enabled.

 The remote control, where fi tted, remains active and illuminated.

2.7 Control panel

LEGEND

1. ON/OFF SWITCH

2. HEATING TEMPERATURE CONTROL KNOB

3. D.H.W TEMPERATURE CONTROL KNOB.

4. D.H.W TEMPERATURE BUTTON. KEEP

PRESSED FOR 5 SECONDS TO DISPLAY OUTSIDE TEMPERATURE (ONLY WITH OPTIONAL OUTDOOR SENSOR)

5. SERVICE BUTTON.

6. SUMMER, WINTER OR SUMMER/WINTER

MODE SELECTION BUTTON.

7. TERMINAL BOARD FOR EXTERNAL WIRING.

8. TEMPERATURE, ERROR CODE AND

OPERATING STATUS DISPLAY

6 7543

120V 60Hz

INSTALLATION INSTRUCTIONS

3. INSTALLATION (authorized personnel)

3.1 Reference standard

Install in accordance with CEC and NEC. All wiring shall conform to CEC , NEC and local building and electrical codes.

This appliance meets the requirements of: American National Standard/CSA Standard for Gas Water Heaters Volume III, Storage W ater Heaters with input

Ratings above 75,000 Btu per Hour, Circulating and Instantaneous. Conform s to ANSI STD Z21.10.3, certif ied to CSA STD 4.3.

Failure to install a gas appliance correctly and in accordance with the above norms could lead to prosecution. It is in the interest of the installer and safety that the law is complied with.

The manufacturer’s instructions form an integral part of the installation and should be left with the appliance but do not over ride in anyway statutory obligations.

Installation requirements

Please refer to local and national standards in force with the Country of destination of the product.

INSTALLATION INSTRUCTIONS

3.2 Unpacking

■ The materials (cardboard) used for packing the appliance are fully recyclable.

■ It is recommended that the packing material is only removed prior to installing the water heater. The

manufacturer will not be held responsible for damage caused by incorrect storage of the product.

■ Packing materials (plastic bags, polystyrene, nails, etc.) must not be left within reach of children, in that

these items represent a potential hazard.

A. Place the packed appliance on the f loor

(see fig. 1) m aking sure that the "up” arrow is facing down. Remove the staples and open out the four flaps of the box.

B. Rotate the water heater 90° while manually supporting it from underneath

C. Lif t the box and remove the protections. Lift the water heater by grasping the rear part and proceed with the installation.

STORAGE & HANDLING

Please note that prior to installation the Radiant water heaters should be stored in the horizontal position with no more than three water heaters to a stack; Ensure that the water heaters are stored in dry conditions and be aware that the carton is a tow-man lift;

Fig. 1

INSTALLATION INSTRUCTIONS

3.3 Installing the water heater

The appliance must be installed

exclusively on a vertical solid wall capable of supporting its weight. The water heater should be fitted within the building unless otherwise protected by a suitable enclosure i.e. garage or outhouse. (The water heater may be fitted inside a cupboard)

■ If the water heater is sited in an unheated enclosure then it is recommended to leave the ON/OFF switch always in ON position to give frost protection.

In order to allow access to the interior of the water heater for maintenance purposes, it is important that the

minimum

distances

indicated in figure 2 are

respected

. To make the installation

easier, the water heater is s upplied with a template to enable the pipe connections to be positioned prior to fixing the appliance to the wall.

To install the water heater, proceed as follows (see fig. 2): a. Use a s pirit level (of not less than 25 m m long) to m ark a horizontal line on the wall where the water heater is to

be fitted.

b. Position the top of the tem plate along the line drawn with the level, respecting the distances indicated. Then

mark the centr es of the positions of the two wall-plugs or anchor s. Finally, mark the positions of the water and gas pipes.

c. Rem ove the template and install the supplied bracket sec urely to the wall. Once the water heater is securely

installed, connect the domestic hot and cold water pipes, the gas supply pipe and the central heating pipes using the fittings supplied with the water heater.

d. Clearance to Combustibles-

Front –0 inches Sides – 0 inches Rear – 0 inches Top – 0 inches from jacket cover

MINIMUM DISTANCE [INCHES]

X Y L H

24200

FLOWMAX-170

A B 12 12

Model

Fig. 2

INSTALLATION INSTRUCTIONS

3.4 Fixing the water heater to wall

Instructions as follows:

1) Fix the external part of mounting bracket to wall using proper screw anchors.

2) Insert the inner guide of mounting bracket

3) Hang the water heater onto the opposite hooks.

INSTALLATION INSTRUCTIONS

CWI

4.3 2.75 3.85

4.4

1.25

4.3 3.25 3.25

HWO

3.5 Water connecti ons

In order to safeguard the heat exchanger

and circulation pum p, especially in case of water heater replacement, it is recommended that the system is hotflushed to remove any impurities (especially oil and grease) from the pipes and radiators.

Make sure that the domestic water and

central heating pipes are not used to ground the electrical system. The pipes are totally unsuitab le for this purpose.

Isolation Valves must be installed on the

heating and D.H.W circuits. This will facilitate all maintenance and service operations where the water heater needs to be drained.

■ To prevent vibration and noise coming from

the system, do not use pipes of reduced diameter, short radius elbows or severe reductions in the cross sec tions of the water passages.

 In order to guarantee the reliability of the

water heater and prevent permanent damage

in areas with high water inlet pressure too, a

36.3 psi (2.5 bar) pressure reducing valve

should be fitted.

■ The water flowing out of the pressure/relief

valve during its operation may be extremely hot. Before operating relief valve, make sure drain line is installed to direct discharge to a safe location such as an open drain. Avoid scalding and/or water damage.

A pressure relief valve is installed in this dual purpose water heater that is rated in accordance with and com plying with either The Standard for relief Valves and Automatic Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22 CSA 4.4 Code. The relief valve must be installed such that the dis charge will be conducted to a suitable place for disposal when relief occurs and that no reducing coupling or other restriction be installed in the dischar ge line. The discharge line must be installed to allow complete drainage of both the valve and the line. If this unit is inst alled with a separate storage vessel, the separate vessel must have its own temperature and pressure r elief valve. No valve is to be placed between the relief valve and the tank. This valve must also com ply with The Standard for Relief Valves and Automatic Shutoff Devices for Hot W ater Supply Sys tems. ANSI Z21.22 or CSA 4.4. If a relief valve discharges periodically, this may be due to the thermal expansion in a closed water system. Contact the water supplier or local plumbing inspector on how to correct this situation. Do not unplug relief valve.

LEGEND

HEATING INTAKE

Ø 3/4

HEATING OUTLET

Ø 3/4

GAS

Ø 3/4

CWI

COLD WATER INLET

Ø 1/2

HWO

HOT WATER OUTLET

Ø 3/4

Fig. 1

INSTALLATION INSTRUCTIONS

3.6 Domestic hot water circuit/ Condensate Drain

Warning/ Hard Water

 If this water heater is installed in an application where the supply water is hard, it must be treated with either

a water softener and filtration, which removes the hardness, or by using sequestering agents that reduce the amount of scale deposits.

 Damage to the water heater as a result of water in excess of 14.5 gpg (250mg/L) of hardness is not

covered by FLOWMAX Limited warranty. If there a problem with the water quality, contact your local water conditioning company for equipment to condition the water supply to this appliance

The cold water supply pressure at the inlet to the water heater must be between 7.25 psi (0.5 bar) and 87 psi (6 bar).

In areas with higher water inlet pressure a pressure reducing valve must be fitted before the water heater.

The frequency of the heat exchanger coil cleaning depends on the har dness of the mains water supply and the presence of residual solids or impurities, which are often present in the case of a new installation. If the characteristics of the mains water supply are such that require it to be treated, then the appropriate treatment devices must be installed, while in the case of residues, an in-line filter should be sufficient.

Central heating circuit

In order t o prevent scaling or deposits in the primar y heat exchanger, the mains supply water to the heating circuit must be treated according to the requirements of local standards. This treatment is indispensable in the c ase where the circuit is frequently topped-up or when the system is often either partially or fully drained.

Condensate Drain

■ FLOWMAX water heater is a high efficient gas appliance that creates condensation when it operates. A condensate trap and flexible drain pipe comes factory installed inside each water tank.

The condensate trap must be primed before operation to prevent exhaust gases from entering the building.

■ Follow your local code with regards to the disposal of condensation

■ Here are several options for disposal of condensate

o From combination water heater direct to drain o From combination water heater to neutralizer to drain

o From combination water heater to laundry tub (bottom of water heater must be above the height of

the laundry tub; must have a negative slope to properly drain)

o From combination water heater to condensate pump to laundry tub (for long distances between

water heater and laundry tub or when bottom of the water heater is installed below height of the laundry tub)

■ Failure to install the condensate discharge properly will affect the reliability of the water heater.

For all units installed with vertical exhaust, must have an additional approved condensate drain. Fittings

must be ULC S636 approved.

Failure to properly connect the condensate line will cause combustion gases to enter the room, possibly

causing serious injury to occupants or death.

Note: Check with your municipality, local codes, or local gas company to determine if disposal of combustion condensate is permitted. In the State of Massachusetts the condensate must be neutralized prior to entering a drain

■ Use only PVC, Vinyl or CPVC pipe for the condensate drain line, metal pipe work is not suitable for condensate discharge system.

■ The condensate drain line should be a minimum of 1/2” diameter that connects to the 7/8” supplied hose and must be supported to prevent sagging. Manufacturer will supply a ¾” to ½” reducer for connection.

■ Keep the length of the condensate drain as short as possible. Long runs or applications where the nearest drain is above the water heater will require the use of a condensate pump. Size the pump to allow for a maximum condensate discharge of 2 gpm from the water heater. The end drain pipe must not be submerged in water or blocked in any way.

INSTALLATION INSTRUCTIONS

■ The condensate pump must be installed with an overflow safety switch that detects downstream clogs and shuts off the water heater before flooding occurs. See condensate pump manufacture for installation instructions.

■ Be sure to check that condensate is freely flowing from the drain piping after the system has been installed. Condensate will begin flowing out of the water heater within 15 minutes after operation has started.

■ Do not run condensate line outside and take measures to prevent the condensate drain lines from freezing

(insulation, heat tape, electric heaters, etc.)

■ Be sure to clean the condensate trap at least once per year to prevent any problems, and after cleaning be sure to check for any leaks of condensed water or flue gas.

Space Heating

 This water heater is suitable for water (potable) heating and space heating.  Piping and components connected to the water heater f or t he spac e heating application s hall be suitable for

use with potable water.

 Toxic chem icals, such as used for water heater treatm ent, shall not be introduced into the potable water

used for space heating.

 A water heater which will be us ed to supply potable water shall not be connected to any heating system of

component(s) previously used with nonpotable water heating appliance.

 W hen the system requires water for the space heating at temperat ures higher than r equired for other uses ,

a means suc h as a mixing valve shall be installed to temper the water for those uses in order to reduce

scald hazard potential.  The water heater can be used for potable hot water heating and combination space heating applications. Note: the following illustrations are c onc eptual designs only. There are many design variations of the equipment presented. Designers m ust add all necessary saf ety and auxiliary equipment to conform to Code requirement and proper design practice. For more details, contact the manufacturer or distributors of the products.

INSTALLATION INSTRUCTIONS

3.6 Schematic of Piping Installation

INSTALLATION INSTRUCTIONS

3.8 Gas Connection

Gas Piping Guidelines

Follow all local codes and/or the most recent edition of the National Fuel Gas Code (ANSI Z223.1/NFPA 54) in

the USA or the Natural Gas and Propane Installation Code in Canada (CAN/CSA B149.1).

Gas Supply Lines Pressures

The minimum and maximum inlet gas pressures are Natural Gas Min. 7.00”WC – Max. 14.00”WC.

Gas press ures over and above the s pecif ied r ange will result in adverse perf or mance and dangerous operating

conditions; any damage resulting from extreme gas supply pressures will not be covered by the limited warranty.

Until pressure testing of the main gas supply line is completed, ensure the gas line to the FLOWMAX

Combination Water Heater is disconnected to avoid any damage to the water heater.

The appliance and its individual shut off valve must be dis connected fr om the gas supply piping system during

any pressure testing of that system at test pressures in excess of 0.5 psi (3.5 kPa)..

The appliance m ust be isolated from the gas supply piping system by closing its individual manual shut-off

valve during any pressure testing of the gas supply system at test pressures equal to or less that 0.5 psi (3.5 kPa).

The gas appliance and its gas connections must be leak tested before placing the appliance in operation.

Leaks can be found by using a gas leak detection device or by applying soapy water to all gas fittings. Should

bubbles occur, tighten those connections and re-test. Always purge the gas line for any debris before connecting to the water heater gas inlet. Never use an open flame to test for gas leaks as property damage, personal injury or death could result. The maximum inlet gas pressure must not exceed the valve specified by the manufacturer and that the

minimum valve listed as for the purposes of input adjustment. The connection to the gas supply must be carried out by professionally qualified personnel in accordance with

the relevant standards.

■ Check the internal and external seals of the gas supply system.

■ A gas shut-off valve must be installed upstream of the appliance

■ Before starting up the water heater, mak e sure that the type of gas corresponds to that for which the appliance

has been set-up.

■ The gas supply pressure must be between the values reported on the rating plate.

■ Conversion of the appliance from natural gas to LPG or vice versa must be carried out by qualified personnel.

■ The power supply cable must be replac ed by a qualified electrician. If the cable is damaged in any way, switch

off the appliance and have the cable replaced by a suitably qualified electrician.

When using an electrical appliance, a few fundamental rules must be observed:

• Do not touch the appliance with damp or wet parts of the body or when barefoot.

• Do not pull on the electric wires.

• Do not allow the appliance to be used by children or anyone unfamiliar with its operation.

INSTALLATION INSTRUCTIONS

3.9 Electrical connections

General warnings

Follow the electrical code requirements of the local authority having jurisdiction. In the absence of such

requirements, follow the lates t edition of the National Electr ical Code ( NFPA 70) in the U.S. or the lates t edition

of CGA C22.1 Canadian Electrical Code – Part 1 in Canada.

Electric Wiring: Ground and Surges

All units c ome with factory installed 3-pronged (grounded) plug end. T he combination water heater can be

plugged into any standard electrical duplex outlet close to the unit as it requires only 4 Amps.

If the local j urisdiction requires the unit to be wired directly, remove and discard the f actory installed plug. An

ON/OFF switch controlling the main power between the break er and the FLOW MAX W ater Heater should be

provided to facilitate end-user maintenance and servicing. This should be done by a qualified electrician.

The combination water heater must be electrically grounded. Ensure the electrical receptac le, in which the

water heater will be plugged into, is properly grounded; if wiring directly, do not attach the ground wire to either

the gas or the water piping as plastic pipe or dielectric unions may isolate the water heater electrically.

The use of a surge protector is recommended to protect from power surges.

Do not energize elec tric power to the unit until all plumbing and gas piping is complete and the combination

water heater has been filled with water.

The electrical supply required by the water heater is 120VAC at 60Hz with a maximum 4A rating with proper

grounding.

DO NOT connect 220-240VAC and any other voltage to this FLOW MAX Com bination Water Heater. This will

damage the combination water heater and void the warranty.

Do not disconnect the power supply when the unit is in normal operation.

If there is a power failure in cold weather areas, the freeze prevention system in the water heater will not

operate and may result in freezing of the heat exchanger; in cold weather areas where power failures are

common, you m us t c ompletely drain the unit to prevent damage if the power will be off f or any extended period

of time.

Damage caused by freezing is not covered under warranty.

CAUTIO N : Label all wires prior to disconnection when servicing controls. W iring errors can cause improper

and dangerous operation. Verify proper operation after servicing.

The c onnection to the main power supply must be carried out by professionally qualified electrical personnel,

registered in accordance with current legislation and local authorities. Always check to make sure that the appliance has an efficient ground system. This requirement is only

satisfied if it has been properly connected to an efficient ground system installed in accordance with the

requirements of current safety standards and carried out by professionally qualified personnel.

This basic safety measure must be checked, verified and carried out by professionally qualified electrical

personnel.

Have the electrical system checked by a qualified electrician. The m anufacturer will not be held liable for any

damage or injury caused as a result of an inefficient or faulty ground system.

■ Ensure the domestic power supply is checked by a qualified electrician to ensure that it can support the maximum power absorption of the appliance, as indicated on the rating plate. In particular, mak e sure that the cable sizes are adequate for the power absorbed by the appliance;

INSTALLATION INSTRUCTIONS

■ The power supply cable must be replaced by a qualified electrician. If the cable is dam aged in any way, switch off the appliance and have the cable replaced by a suitably qualified electrician;

When using an electrical appliance, a few fundamental rules must be observed:

• Do not touch the appliance with damp or wet parts of the body or when barefoot.

• Do not pull on the electric wires..

• Do not allow the appliance to be used by children or anyone unfamiliar with its operation;

If the unit fails to re-start after any fault, unplug the unit for 30 seconds, then re-plug in the unit and try to restart with the on/off

switch. If the unit fails to restart, call a qualified Technician for service.

INSTALLATION INSTRUCTIONS

Remote control connection

Connect the power supply to the terminal board inside the control panel as follows:

a. Switch off the power supply at the main switch. b. Remove the front case panel of the water heater. c. Slacken the screws and remove plate A (see fig. 1). d. With the plate removed, connect the wires to the terminal board B as follows:

• Connect the ground wire (normally coloured green/yellow) to the terminal marked with the ground symbol “

“.

• Connect the neutral wire (normally coloured blue) to the terminal marked with the letter “N”.

• Connect the live wire (normally coloured brown) to the terminal marked with the letter “L”.

• Terminals identified by the letters: Ta ⇒ Room thermostat

Se ⇒ Outside temperature sensor

When the wires have been connected, place plate “A" back to position.

TaL N Ta Se Se

Fig. 1

INSTALLATION INSTRUCTIONS

3.10 Venting

Improper venting of combination water heater can result in excessive levels of car bo n monoxide which

can result in severe personal injury or death. This combination water heater must be vented in accordance with the “Venting of Equipment” section of the latest edition of the ANSI Z223.1 / NFPA 54 Natural Gas Code and/or the “Venting systems and air supply for appliances” section of the latest version of the CAN/CSA B149.1 Natural Gas and Propane Installation Code in Canada and in accordance with all applicable local building codes.

Venting Guidelines

• For best results, keep the vent system as short and straight as possible.

• Locate the combination water heater as close as possible to the vent termination.

• The combination water heater vent must not be common vented with any other gas appliance or vent stack.

• Slope vent upwards towards the vent terminal at a rate of 1/8” per foot (1% slope).

• Vent termination must be a minimum of 12” above grade or expected snowfall.

• Vent and air intake pipe must be supported every 4 feet of horizontal run and every 5 feet of vertical run.

FLOWMAX and Direct Vent

• All FLOWMAX Combination Water Heaters are prepared at the factory to be direct vent (sealed combustion) units which draw all of their required combustible air directly from outside the building.

• All FLOWMAX Combination W ater Heaters use 2” or 3” diam eter exhaust and 2” or 3” diameter air intake pipe.

• The air intake vent materials can be made of ABS, CPVC, PVC materials and in accordance with all

applicable local building codes.

Contaminated Make-Up Air Will Damage the Unit

• Recommend not to oper ate the combination water heater in an area that is or will be under construction or renovation.

• The FLOWMAX warranty will not cover damage and premature wear caused to the unit due to installation in a contaminated environment.

• All of the exhaust venting connections must be leak check ed with a soap solution upon initial start up of the water heater. Any leaks must be repaired before continuing operation of the water heater.

• Warranty will not be available if the water heater is used for construction heat.

INSTALLATION INSTRUCTIONS

Exhaust Vent Piping Materials

• Use only 2” or 3” solid PVC/CPVC schedule 40 PVC/CPVC or ULC S636 pipe and fittings.

• Venting requirements in USA and Canada are different. Please consult with the mos t recent edition of the

National Fuel Gas Code (ANSI Z223.1 / NFPA 54) or CAN/CSA B-149.1 as well as local codes for applicable venting regulations and restrictions.

• For installation in Canada, field supplied plastic vent piping must comply with CAN/CSA B-149.1 (latest edition) and be certified to the standard for type BH Gas Venting Systems, ULC S636 c omponents of this listed system shall not be interchanged with other vent systems or unlisted pipe/fittings. All plastic components and specified primers and glues of the certified vent system must be from a single manufacturer and not intermixed with other system m anufacturer’s vent system parts. The supplied vent adaptors are certified as part of the combination water heater.

• For all units installed with vertical exhaust, must have an additional approved condensate drain installed on

the Horizontal section of the exhaust vent. Fittings must be ULC S636 approved.

• PVC/CPVC pipe/fittings have been approved for use on this appliance with zero clearance to combustibles.

Intake Vent Pipe Materials

• Solid PVC schedule 40 PVC or ULC S636 pipe and fittings and ABS pipe and fittings can be used for combustion air intake on FLOWMAX products.

• Transition cement must be used for the ABS pipe connected to the PVC appliance adaptors.

• All plastic components and specified primer s and glues of the certified vent system m ust be from a single

manufacturer and not intermixed with other system manufacturers vent system parts.

Allowable Vent Lengths

Model

Size

Max Equivalent Length Vertical and Horizontal

per Vent Run

Type

Exhaust Vent

Intake Vent

FLOWMAX-90

2"/3" Diam

100 ft

Natural Gas or LP

Schedule 40 PVC/CPVC

PVC, CPVC or ABS

FLOWMAX-120

3" Diam

100 ft

Natural Gas or LP

Schedule 40 PVC/CPVC

PVC, CPVC or ABS

FLOWMAX-170

3" Diam

100ft

Natural Gas or LP

Schedule 40 PVC/CPVC

PVC, CPVC or ABS

Equivalent Lengths

• Reduce the maximum vent length accordingly for each elbow used.

• Each 2”/3” 45⁰ elbow equates to 2.5 linear feet of vent pipe.

• Each 2”/3” 90⁰ short radius elbow equates to 7.5 linear feet of vent pipe.

• Each 2”/3” 90⁰ long radius elbow equates to 5 linear feet of vent pipe.

• The maximum length listed is for exhaust vent only. The intake length should be equal length.

• The total maximum equivalent vent pipe distance cannot exceed 100f t for horizontal and vertical venting

distance.

• The maximum lengths are not including elbows.

• Exceeding the maximum venting distances will cause the appliance to malfunction or cause an unsafe

condition.

Minimum Vent Lengths

• 3" Diameter - 6" pipe (Iength) plus one elbow.

INSTALLATION INSTRUCTIONS

4. COMMISSIONING THE APPLIANCE

4.1 General warnings

The following operations must be carried out by professionally qualified personnel, registered in

accordance with current legislation.

The water heater leaves the factory pre-set and tested for burning either natural Gas or LPG.

Nevertheless, when startin g the water heater for the first time, make sure that the information on the rating plate corresponds to the type of gas being supplied to the water heater.

Once th e system has been f illed an d t he n ecessary adjustment s made, remember to tight en the screw s

of the gas valve test point and make sure that there are no gas leaks from the test point and from any pipe fittings upstream of the gas valve.

■ Preliminary operations

Switching the water heater on for the f irst tim e means check ing that the installation, regulation and operation of the appliance are correct:

• Check that the rating on the rating plate corresponds to that of the mains supply networks (gas, electricity, water));

• Check that the power supply voltage to the water heater c omplies with the rating plate (120 V – 60 Hz) and that the live, neutral and ground wires are connected properly. Also make sure that the ground connection is sound;

• Check that the gas s upply is correctly sized for the flow rate required by the water heater and that it is fitted with all the safety and control devices stipulated current regulations;

• Check that the supply of combustion air and exhaust and condensate discharge systems are functioning correctly and in line with current law and national and local standards;

• Check for the presence of permanent aeration/ventilation openings as required by current law for the type of appliances installed;

• Check that the exhaust vent and its connections to the term ination comply with the requirements of current law and national and local standards for the type of appliances installed;

• Make sure that any central heating shut-off valves are open;

• Check that the condensate drain system, including outside the water heater (exhaust system condensate

collection devices), allows the condensate to flow freely to the drain.

• Check that there are no flammable materials or liquids in the immediate vicinity of the water heater;

Flush out both primary and domestic hot water circuits (see 4.3 “Flushing the system”).

INSTALLATION INSTRUCTIONS

4.2 Filling the system

Check the properties of the water supply and install the

appropriate treatment devices if the mains water has a hardness rating more than 14.5 gpg (250 mg/L) i

n order

to prevent scaling and eventual damage to the D.H.W heat exchanger.

Use only clean tap water to fill the system.

A pre-filtering system can be installed on the incoming

water supply to help reduce impurities and limestone.

This water heater must have adequate water flowing

through it whenever the burner is on. Failure to do this will damage the unit and void the warranty.

Once the water pipes have been connec ted, close the gas feed valve and fill the system as follows:

• Check that the circulation pump runs freely;

• Check that the plug of the air vent valve has been slac kened

slightly to allow air to escape from the system (fig.1);

• Open the main domestic water supply valve;

• Open the filling tap R (fig. 2);

• Unscrew the plug on the pump to remove any trapped air,

check that the pump is free then re-tighten it when water starts to flow out (fig.1);

• Before switching on the water heater, purge air completely from

the air vent valve positioned on the top of t he condensing exchanger (fig. 3);

• Open the air vents on the radiators and monitor the air

evacuation process. When water starts to flow out of the radiators, close the air vents;

• Use the pressure gauge M (fig. 2), to check that the systems

pressure reaches the middle of the green area (equal to 1,2 bar, see fig. 4).

• On completion, make sure that the filling tap R is

perfectly closed.

3 bar

1.5 bar

0.5 bar

1.2 bar

GREEN AREA

PUMP PLUG

PUMP

AIR VENT VALVE PLUG

AIR VENT VALVE

INSTALLATION INSTRUCTIONS

4.3 Flushing the system

Failure to flush and add inhibito r to the system will invalidate the appliance operation. All systems must be thoroughly drained and flushed out using additives – corrosio n inhibitors and flushing agents/descalers. All flushing must be done for new and retrofit installs.

Warning: Failure to clean the system and add adequate inhibitor invalidates the warranty

To flush out the primary side of this unit:

a. Fill the water heater with clean water as per the filling instructions. b. Using a drain off cock on the lowest point of the s ystem allow the water to dr ain from the system and water

heater.

c. In order to f lush the system correctly, turn off all radiators or fan coils. Open the filling loop and drain cock

simultaneously and allow the water to flow through the water heater.

d. Open each individual radiator or fan coil, allowing water to flow through. Then, turn that radiator or f an coil off

and repeat for all radiators or fan coils on the system.

e. T urn off the filling loop and close the drain cock. Open all radiators or fan coils and open the filling to fill the

system.

f. Continue to fill the system until the pressure gauge reaches 14.5 psi (1 bar). g. Add an inhibitor to the system water to prevent limestone and magnetite deposits from form ing and to protect

the water heater from galvanic corrosion.

h. In areas where freezing might occ ur, an antifreeze (Gycol) may be added to the system water to protect the

system. Please adhere to the specifications given by the antifreeze manufacture. Do not use automotive silicate based antifreeze. Please observe that the antifr eeze and water mixture does not exceed 40% of the antifreeze content. Do not use antifreeze other than that specifically made for hot water heating systems. Advise systems operator/ultimate owner that system is filled with antifreeze.

To flush out domestic hot water circuit:

a. Open all hot water outlets. b. Turn on inlet group supply so water enters the water heater; leave to fill until water is released from the hot

water outlets. Turn off all hot water outlets.

c. Connect a hosepipe to the cylinder drain cock and open the drain cock. d. Allow water to flow through the water heater and out of the drain cock. e. Turn off water supply, disconnect the hosepipe, close the drain cock and refill the water heater.

4.4 Filling the c onde ns a t e t rap

The condensation trap must be pre-filled when starting the water heater for the first time in order to prevent flue gases from flowing back through the trap.

The filling operation is carried out as follows (see fig.

1):

• Remove plug T and fill the trap S three quarters

full with water;

• Replace plug T and connec t the drainpipe P into

a condensate discharge trap conforming to current legislation;

Attention! It is recommended to clean the condensate trap, after a few m onths of water heater operation, to remove deposits/res iduals left after the first condensate passage within the water heater new components that may interfere with the correct operation of the trap itself.

Fig. 1

INSTALLATION INSTRUCTIONS

4.5 Starting up the water heater

Once the system has been filled, proceed as follows:

• Check that the exhaust flue is free of obstructions and correctly connected to the water heater;

• Switch on the power supply to the water heater;

• Open the gas isolation valve;

• Place switch 1 in the ON position

(see 2.7 “Control Panel”), after a few seconds the circulating pump will start to run;

• Use button 6 to set the SUMMER, WINTER or SUMMER/WINTER

function. The symbols

will light up (fixed light) to indicate that the water heater is working;

• T he automatic ignition system will then light the burner. This operation is repeated for 3 times. It may however be necessary to repeat the operation in order to eliminate all the air from the pipes. To repeat the operation, wait approximately three minutes bef ore reattempting to light the water heater. To reset the water heater Switch off switch 1 (see 2.7 “Control Panel”) and switch it back on again and repeat the lighting procedure;

• With the water heater ignited, if the system still emits noises, the operations must be repeated until all the air has been removed;

• Check the pressure in the system. If the pressure has fallen, re-open the filling tap until the code H2O disappears on the display and the pressure reaches the middle of the green area (1,2 bar). On completion, close the filling tap.

• If t he CO2 value does not corres pond to the specified value, adjust screw V (see fig. 1) on the venturi clock wise to reduce the CO2 value or anticlockwise to increase it

;

Table n°1

Gas type

CO2 %

Natural Gas - G20

9.3

Liquid Propane Gas - G 31

Fig. 1

REGULATION INSTRUCTIONS

5. REGULATING THE APPLIANCE

5.1 Parameters table

PARAMETER N° TYPE OF OPERATION PARAMETER VALUE FUNCTION

1 Selects the type of water heater

01 02

Instantaneous (95-140°F)

Water heater with storage tank

B. w/storage tank Comfort (+45°F)

D.H.W. Temperature 95-160 °F

2 Selects the type of gas

00 01

Natural gas

Lpg

Sets the central heating

temperature

00 01

Standard (86-167°F)

Reduced (77-104°F )

Selects pump mode during

heating phase

00 01

Standard ( 3’ pump overrun)

Permanent (pump runs continuously)

5 Water hammer prevention

00 01

Off On

6 Central heating timer 00-90 (default = 36)

Delays the heating restart to prevent

frequent On/Offs, Expressed in steps of 5

sec (factory set at 36 x 5 = 180”)

Central heating pump overrun

timer

00-90 (default = 36)

The overrun timer can be modified.

Expressed in steps of 5 sec (factory set

at 36 x 5 = 180”)

8 D.H.W pump overrun timer 00-90 (default = 18)

The overrun timer can be modified.

Expressed in steps of 5 sec (factory set

at 18 x 5 = 90”)

9 Minimum gas pressure setting -

Not applicable for FLOWMAX water

heaters

Minimum central heating output

setting

Not applicable for FLOWMAX water

heaters

Maximum gas pressure and

maximum central heating output

setting

Not applicable for FLOWMAX water

heaters

12 Ignition sequence setting -

Not applicable for FLOWMAX water

heaters

D.H.W priority function (2 min

delay on dhw function)

00 01

Off On

144

Selects the type of burner

00 01 02

Atmospheric (not FLOWMAX)

FLOWMAX 90

FLOWMAX 120

FLOWMAX 170

152

Zone management board

activation

00 01

Off On

163 Telephone control activation

00 01

Off On

17 Minimum fan speed setting

60 Hz (Natural Gas)

60 Hz (propane)

To set the minimum frequency value (Hz)

for the fan operation

18 Maximum fan speed setting

155 Hz (Natural Gas)

143 Hz (propane)

To set the maximum frequency value

(Hz) for the fan operation

Minimum fan speed setting

(Central Heating)

60 Hz (Natural Gas)

60 Hz (propane)

To set the minimum frequency value (Hz)

for the fan operation in heating mode .

Maximum fan speed setting

(Central Heating)

155 Hz (Natural Gas)

143 Hz (propane)

To set the maximum frequency value

(Hz) for the fan operation in heating

mode

21 Ignition sequence setting

90 Hz (Natural Gas)

110 Hz (propane)

To set the fan frequency value (Hz) at the

ignition

22 Fan frequency value display

00 01

Off

On (for 10 min. time)

NOTES:

1 - Activate onl y f or “heat i ng onl y” water heaters; 2 - If the heating s ystem has m ore than one zone, an additional i nterface board (optional extra) must be instal led on the circuit board and

parameter 15 set at 01;

3 - To install t he telephone control, use non-polarised conductors c onnected to contac t TA of the termi nal board in parallel with the remote

control if fitted. Set the parameter 16 at 01.

4- When t he param eter value 01/02/ 03 is s et, param eters from no. 17 to 22 are aut om atic ally ac tivat ed and water heater set ti ngs are c arried -

out in through these parameters (i n Hz) t hat repl ace parameters from no.9 t o no. Once the parameter value has been set ac cording to the water heater output, the P.C.B will automatically adjust the maximum and

minimum values .

REGULATION INSTRUCTIONS

5.2 Setting the parameters

To modify the preset values of the parameters r eported in the previous table, open the paramet er settings menu as follows:

1. Place the On/Off switch in the OFF position.

2. Activate the On/Off switch while keeping buttons ‘+’ and “-“ pressed. W ait for “P 00” to appear on the display.

3. Release buttons ‘+’ and ‘-’.

4. Keep button ‘S’ pressed and use button ‘+’

and ‘-‘ to select the parameter to modify.

5. Release button ‘S’, then re-press and

release it. The display will indicate the value of the parameter to modify.

Adjust the value of the parameter using the procedure described in the following pages.

P 00

OFF

P 00

P 01

120V 60Hz

REGULATION INSTRUCTIONS

To enter the parameters menu, follow the previously described procedure (steps 1-5).

ARAMETER 1 – TYPE OF WATER HEATER

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter:

00 = Instant aneous water heater 01 = Storag e water heat er 02 = Storag e water heat er ‘comfort’ (+ 45 °F) 03 = D.H.W. t emperature 95-160°F

7. Press and release button ‘S’ to confirm. The parameter number (1) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

ARAMETER 2 - GAS SUPPLY

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter:

00 = natural gas 01 = propane

7. Press and release button ‘S’ to confirm. The parameter number (2) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

ARAMETER 3 – CENTRAL HEATING TEMPERATURE

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter:

00 = standar d ( 86⁰F – 167°F) 01 = reduced (77⁰F – 104°F) for under-floor heat ing

7. Press and release button ‘S’ to confirm. The parameter number (3) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

P 01

P 02

P 03

120V 60Hz

REGULATION INSTRUCTIONS

PARAMETER 4 – CENTRAL HEATING PUMP

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter:

00 = standard (3” overr un) 01 = permanent ( always running)

7. Press and release button ‘S’ to confirm. The parameter number (4) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

ARAMETER 5 – WATER HAMMER PREVENTION

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter:

00 = off 01 = on (def ault = 2” )

7. Press and release button ‘S’ to confirm. The parameter number (5) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

ARAMETER 6 – CENTRAL HEATING TIMER

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter within the prescribed limits

00 = 0 x 5” = 0” 90 = 90 x 5” = 450” (7.5 m in) The default value is 36 = 180” = 3 min

7. Press and release button ‘S’ to confirm. The parameter number (6) will appear on the display.

8. Switch off the appliance and switch it back on again to

render the new parameter operative.

P 04

P 05

P 06

120V 60Hz

REGULATION INSTRUCTIONS

PARAMETER 7 – CENTRAL HEATING PUMP OVERRUN TIMER

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter within the prescribed limits

00 = 0 x 5” = 0” 90 = 90 x 5” = 450” (7.5 m in) The default value is 36 = 180” = 3 min

7. Press and release button ‘S’ to confirm. T he parameter number (7) will appear on the display.

8. Switch off the appliance and switch it back on ag ain to

render the new parameter operative.

ARAMETER 8 – D.H.W PUMP OVERRUN TIMER

6. Use buttons ‘+’ and ‘-‘ to modify the value of the parameter within the prescribed limits

00 = 0 x 5” = 0” 90 = 90 x 5” = 450” (7.5 m in) The default value is 18 = 90” = 1.5 min

7. Press and release button ‘S’ to confirm. T he parameter number (8) will appear on the display.

8. Switch off the appliance and switch it back on ag ain to

render the new parameter operative.

ARAMETER NO. 9 – MINIMUM GAS PRESSURE SETTING

Not applicable for FLOWMAX burner (only for atmospheric burner)

ARAMETER NO.10 – MINIMUM CENTRAL HEATING OUTPUT SET T ING

Not applicable for FLOWMAX burner (only for atmospheric burner)

ARAMETER NO.11 – MAXIMUM GAS PRESSURE AND MAX. CENTRAL HEATING OUTPUT SETTING

Not applicable for FLOWMAX burner (only for atmospheric burner)

ARAMETER NO.12 – IGNITION SEQUENCE SETTING

Not applicable for FLOWMAX burner (only for atmospheric burner)

P 07

P 08

120V 60Hz

REGULATION INSTRUCTIONS

PARAMETER 13 – D.H.W PRIORITY

6. Use buttons ‘+’ and ‘-‘ to modify the value of the par am et er: 00 = off 01 = on (def ault = 120” )

7. Press and release button ‘S’ to confirm. The parameter number (13) will appear on the display.

8. Switch off the appliance and switch it back on again to render the

new parameter operative.

ARAMETER 14 – TYPE OF BURNER

6. Use buttons ‘+’ o ‘-’ to modify the value of the parameter:

00 = water heater with atmospheric burner; 01 = water heater with FLOWMAX - 90 02 = water heater with FLOWMAX - 120;

03 = water heater with FLOWMAX - 170;

7. Press and release button ‘S’ to confirm. The parameter number (14) will appear on the display.

8. Switch off the appliance and switch it back on again to render the

new parameter operative.

ARAMETER 15 – ZONED SYSTEM

6. If the system is f itted with zone valves, set the parameter at ‘01’. If a remote control is installed, an extra interface board must be installed to control the zone valves. Then set the parameter at ‘01’.

7. Press and release button ‘S’ to confirm. The parameter number (15) will appear on the display.

8. Switch off the appliance and switch it back on again to render the

new parameter operative.

ARAMETER 16 – TELEPHONE CONTROL

6. If a telephone interface is installed, enable the board by setting parameter 16 at ‘01’;

7. Press and release button ‘S’ to confirm. The parameter number (16) will appear on the display.

8. Switch off the appliance and switch it back on again to render the

new parameter operative.

N.B.: The connection of the telephone interface to contact TA of the terminal board must be wired in parallel with the r emote control using two non-polarised conductors.

P 14

P 15

P 16

P 13

120V 60Hz

REGULATION INSTRUCTIONS

PARAMETER 17 – MINIMUM FAN SPEED SETTING

6. Use buttons ‘+’ o ‘-’ to modify the value of the parameter between: min = 33 Hz ; max = value of parameter 18

The default value is :

- 60 Hz for Natural Gas;

- 60 Hz for propane;

7. Press and release button ‘S’ to confirm. The parameter number (17) will appear in the display.

8. Switch off t he appliance and switch it back on again to render the

new parameter operative.

ARAMETER 18 – MAXIMUM FAN SPEED SETTING

Use buttons ‘+’ o ‘-’ to modify the value of the parameter between:

min

= value of parameter 17; max = 202 Hz.

The default value is:

- 155 Hz for Natural Gas;

- 143 Hz for propane;

7. Press and release button ‘S’ to confirm. The parameter number (18) will appear in the display.

8. Switch off t he appliance and switch it back on again to render the

new parameter operative.

ARAMETER 19 – MINIMUM FAN SPEED SETTING

ENTRAL HEATING MODE

6. Use buttons ‘+’ o ‘-’ to modify the value of the paramet er between: min = 33 ; max = value of parameter 18.

The default value is:

- 60 Hz for Nat ur al G as ;

- 60 Hz for propane;

7. Press and release button ‘S’ to confirm. The parameter number (19) will appear in the display.

8. Switch off t he appliance and switch it back on again to render the

new parameter operative.

ARAMETER 20 – MAXIMUM FAN SPEED SETTING

ENTRAL HEATING MODE

6. Use buttons ‘+’ o ‘-’ to modify the value of the parameter bet ween: min = value of parameter 17; max = 202 Hz.

The default value is:

- 155 Hz for Natural Gas;

- 143 Hz for propane;

7. Press and release button ‘S’ to confirm. The parameter number (20) will appear in the display.

8. Switch off t he appliance and switch it back on again to render the

new parameter operative.

P 17

055

P 20

164

P 19

055

164

P 18

120V 60Hz

REGULATION INSTRUCTIONS

PARAMETER 21 – IGNITION SEQUENCE SETTING

6. Use buttons ‘+’ o ‘-’ to modify the value of the parameter between: min = value of par ameter 17; max = value of parameter 18.

The default value is:

- 90 Hz for Nat ur al G as ;

- 110 Hz for propane;

7. Press and release button ‘S’ to confirm. The parameter number (21) will appear in the display.

8. Switch of f the appliance and switch it back on again to

render the new parameter operative.

ARAMETER 22 – FAN FREQUENCY VALUE DISPLAY

6. Use buttons ‘+’ o ‘-’ to modify the value of the parameter:

- 00 = Off

- 01 = On

If parameter value 01 is selected, during the water heater

operation, the display will show the fan frequency value for 10 min.

7. Press and release button ‘S’ to confirm. The parameter number (22) will appear in the display.

8. Switch of f the appliance and switch it back on again to

render the new parameter operative.

P 21

110

P 22

120V 60Hz

REGULATION INSTRUCTIONS

5.3 Gas data

Technical data tables

Table no.3 - Gas data table

NATUR AL GAS G20

LIQUID PROPANE GAS

G31

Lower Wobbe Index (59°F; 14.5 psi)

MJ/Nm3 45.67 70.69

Nominal supply gas pressure

mbar - psi

20 - 0.29

37 - 0.537

Consumption (59°F; 14.5 psi)

ft3/hr

190.7

73.10

Heating Power (kW) – Fan frequency (Hz) diagram

L.P.G. (G31)

Natural gas - G20

Table no.1 - CO

Values

Gas type CO2 %

Natural gas - G20

9.3

Liquid Propane Gas - G 31

Table no.2 - Frequency

Gas type Minimum (Hz) Maximum (Hz)

Natural gas - G20

155

Liquid Propane Gas - G 31

143

MAINTENANCE INSTRUCTIONS

5.4 Regulating the gas valve offset

tp v

Fig. 1

Fig. 2

Fig. 3

Fig. 4

When replacing the gas valve, it is necessary to regulate

the offset on the new gas valve to guarantee a correct operation of the water heater.

Instructions as follows:

Fig. 1 – Disconnect the silicon pipe from its connection i onto the venturi air intake point.

Fig. 2 – Connect that end of the silicon pipe to a ‘T’ connection

and bring the end of another silicon pipe from

the same ‘T’ connection to the venturi air intake point

Insert a third silicon pipe on the free connection of the ‘T’ and connect its end to the negative point

of a gas

pressure manometer.

Fig. 3 – Unscrew the pres sure

point screw and connect

there the pipe that goes to the positive point

of the gas

pressure manometer.

Switch the water heater On at the minimum power. The manometer should read a value of

0.04 mbar

; if you read

a different value, proceed as follows (Fig.4)

Fig. 4 – Rem ove the protection cover tp of the gas valve and adjust plastic screw

with a

screwdriver to modify the value on the

manometer and to bring it to

0.04 mbar

Once the regulation is completed, disconnect pipes and restore original water heater configuration.

MAINTENANCE INSTRUCTIONS

6. MAINTENANCE (authorized personnel)

6.1 General War nings

All maintenance operations must be carried out by professionally qualified personnel, authorized by

FLOWMAX. The frequency of water heater maintenance is recommended to be carried out once a year. In order to guarantee the long life of the appliance and in accordance with the current gas safety

regulations, only us e original spare parts Before carrying out any type of maintenance operation, disconnect the appliance from the electrical

supply and shut off the gas valve. Warranty will not be offered if recommended maintenance is not followed.

6.2 Maintenance

Periodic examination of the entire venting system is recommended. Make sure all the venting

connections/joints are tight and in go od condition where visible. Clean the burner cylinder using a non-metal brush and without damaging the ceramic fibre. Clean the heat exchanger using a recommended detergent from FLOWMAX Technologies for the

stainless steel. Do not wet the ceramic fibre coating. Visually inspect the burner flame. The flame must burn with a clear blue, stable flame. If the burner

flame appearance is not satisfactory or debris is visible on the burners, remove and clean with a

vacuum cleaner. All electric motors are permanently lubricated and do not need oiling. Remove the combustion air

blower and clean wheel and housing with soft brush or vacuum. Verify proper operation after any servicing. Wipe the outside surface with a wet cloth; then dry the surface. Use a neutral detergent to clean any

stains. Vent termination should be inspected for blockage during maintenance checks. Check for blockage at the drain pipe and condensate trap. Clean condensate trap and check for correct level of water. Check for water leaks from the equipment and piping. Warranty will not be offered if recommended maintenance is not followed.

6.3 Water heater inspection

In order to ensure that the water heater operates efficiently and safely, it is recomm ended that the appliance is inspected by a suitably competent technician at least once a year. The following operations should be carried out annually

■ Check the condition of the gas seals and replace where necessary.

■ Check the condition of the water seals and replace where necessary.

■ Visually inspect the condition of the combustion chamber and flame.

■ When required, check that the com bustion is correctly regulated and if necessary proceed in line with section

“Commissioning the water heater”.

MAINTENANCE INSTRUCTIONS

■ Remove and clean any oxidation from the burner.

■ Check that the seal of the room-sealed chamber is undamaged and positioned correctly.

■ Check the primary heat exchanger and clean if necessary.

■ Check the maximum and minimum modulation pressures and the modulation itself.

■ Check the c ondition and operation of the ignition and gas safety systems. If necessary, rem ove and clean the

scaling from the ignition and flam e detect ion electrodes, paying particular attention to replace them at the c orr ect distance from the burner.

■ Check the heating safety systems: temperature limit safety thermostat, pressure limit safety device.

■ Check the pre-fill pressure of the expansion vessel (see expansion vessel data plate).

■ For safety reasons, periodically check the integrity and operation of the exhaust system.

■ Check that the connection to the mains electricity supply complies with that reported in the water heater’s

instruction manual.

■ Check the electrical connections inside the control panel.

■ Check the D.H.W flow rate and temperature.

■ Check that the condensate drain system is working cor rectly, including any parts of the system outside the water

heater such as condensate collection devices along the length of the flue and/or any acid neutralising devices.

■ Check that the condensate flows freely and that there are no exhaust fumes present within the appliance.

Warranty will not be offered if recommended maintenance is not followed.

MAINTENANCE INSTRUCTIONS

6.4 Accessing the water heater

All maintenance operations require one or more of the water heater casing panels to be removed.

The side panels can only be removed after the front panel has been removed.

Front panel:  Remove the fixing screws at the lower

edge of the front panel.

 Grasp the lower part of the panel and

pull it outwards

 (fig. 1) and then

up.

Left and right side panel:  Remove the fixing screws at the f ront

and lower edge of the side panel to remove.

 Grasp the bottom of the panel, m ove

it sideways and then upwards to remove it

.

To access the electrical connections of the control panel, proceed as follows:

• Remove the front panel (see fig. 1).

• Grasp the left and right control panel

support brackets

 and pull them

outwards, at the sam e time rotating the panel downwards.

• Unscrew the four fixing screws

 and

remove the cover.

6.5 Flushing out the primary side

• Fill the water heater as per the filling instructions.

• Using a drain off cock on the lowest point of the system allow the water to drain from the system and water

heater.

• In order to flush the system correc tly, turn of f all radiators or fan coils. Open the filling loop and drain cock simultaneously and allow the water to flow through the water heater.

• Open each individual radiator or fan coil, allowing water to flow through. Then turn that radiator or f an coil off and repeat for all radiators or fan coil on the system.

• Turn off the filling loop and close the drain cock open all radiators and open the filling to fill the system.

• Continue to fill the system until the pressure gauge reaches 14.5 psi (1.0 bar).

Fig. 1

MAINTENANCE INSTRUCTIONS

6.6 Draining the central heating system

If the need arises to drain the system, this can be done as follows:

• Switch the system to “W INTER” mode and ignite the water heater.

• Switch off the power supply to the water heater.

• Wait for the water heater to cool down.

• Connect a hosepipe to the system drain point R

and locate the other end of the hose in a suitable drainage system.

• Open the system drain valve (fig. 1).

• Open the air vents on the radiators, starting with

the highest and moving down the system to the lowest.

• When the system has been drained, close the radiator breather valves and the drain valve.

• If only the water heater needs to be drained, close the flow/return isolating valves on the heating circuit and open the drain valve R located at the bottom of the water heater on the pump manifold (see fig. 1 );

Draining the domestic hot water system

If there is a danger of freezing, the domestic hot water system should be drained. This can be done as follows:

• Close the mains water supply valve.

• Open all the hot and cold water taps.

• On completion, close all the previously opened taps.

Fig. 1

MAINTENANCE INSTRUCTIONS

6.7 Maintenanc e ope rations

Before carrying out any cleaning or part

replacement operations, ALWAYS turn off the ELECTRICITY, WATER and GAS supplies to the water heater.

FLOWMAX will not be held responsible for

damage to any of the water heater’s components caused by non-compliance with this instruction.

For all maintenance operations requiring removal of

the water heater casing, r ef er to the pr ocedur es described in paragraph 6.3 “Accessing the water heater”.

Cleaning the main exchanger module and combustion unit (fig. 1)

• Disconnect the electrical connections of the

electric fan.

• Disconnect the joint and remove the pipe linking

the gas valve to the injector unit (venturi).

• Disconnect the joint and rem ove the gas feed pipe

from the gas valve.

• Un-plug the ignition electrode and f lame detection

wires from the ignition control unit.

• Unscrew the ring-nut at the bottom of the room-

sealed chamber and remove the gas valve.

• Unscrew the nuts securing the burner unit

(consisting of a fan, manifold and burner) to the primary heat exchanger.

• Rem ove the burner unit, paying particular attention

not to remove the ceramic fibre protect ion from the bottom of the heat exchanger.

• Check that the burner is not affected by deposits,

scaling or excessive oxidation. Check that all the holes in the burner are free.

• Clean the elec trodes carefully without altering their

positions with respect to the burner.

• Clean the burner c ylinder using a non-metal brush

and without damaging the ceramic fibre.

• Check the integrity of the gasket on the cover of

the burner.

• Clean the heat exchanger using a recommended

detergent from FLOWMAX Technologies for stainless steel, distributing the product on the spirals of the exchanger using a brus h. Do not wet the ceramic f ibre coating. W ait a f ew minutes then remove the deposits using a non-metal brush. Then remove the residues under running water.

• Remove the pipe clip, remove the condensate

drainpipe and clean under running water.

• Unsc rew the joint to the condensate trap, remove

the trap and wash under running water.

• With the cleaning completed, re-assemble the

components following the above procedure in

reverse order. Finally, check the water heater to make sure that all gas and exhaust joints are tight.

Primary

heat exchanger

flue

connection

chamber

Fig. 2

stainless steel

pipe coil

Ceramic fibre

gasket

Fig. 1

Premix burner unit burner

ignition electrode

ionization electrode

primary heat

exchanger

MAINTENANCE INSTRUCTIONS

Cleaning the D.H.W heat exchanger

(see fig. 1)

• Close the shut-off valve and drain the domestic hot

water circuit and central heating circuit of the water

heater;

• Disconnect the joints securing the heat exchanger to

the pipes;

• Unscrew the screws joining heat exchanger fixing

bracket to its support and remove it;

• Remove the heat exchanger;

• De-scale the heat exchanger by chemically washing

the plates;

• Fit new washers;

• Re-assemble the heat exchanger and components

following the above procedure in reverse order;

• Fill the system with water and check for any leaks from

the joints.

Part replacement:

Ignition and/or flame ionization electrodes

(see fig. 2)

• Un-Plug the electrode wires;

• Slacken the fixing screws;

• Remove the electrodes. When fitting the new ones,

check that the seals are not damaged. Replace if

necessary;

• Reconnec t the wires and re-ass emble the c omponents

following the above procedure in reverse order;

• Switch on the power supply and restart the appliance;

If the water heater does not restart, check the

positions of the electrodes (especially the ignition electrode). Make sure that original position and distances between the electr odes and the burner are respected to avoid a water heater malfunction).

Fig. 2

ionization

electrode

ignition

electrode

Fig. 1

D.H.W heat

exchanger

fixing

nuts

washers

fixing

bracket

MAINTENANCE INSTRUCTIONS

Safety thermostat (see fig. 1)

• Disconnect the connecting wire;

• Unscrew the fixing screws and remove the

thermostat;

• Replace the thermostat and re-assemble the

components following the above procedure in

reverse order;

• Switch on the electricity, water and gas supplies and

restart the appliance.

Heating sensor (see fig. 1)

• Un-Plug the connecting wire;

• Replace the sensor and re-assemble the

components following the above procedure in

reverse order;

• Switch on the electricity, water and gas supplies,

open the shut-off valves and fill the central heating

circuit. Then restart the appliance, remembering to

discharge any air that may be trapped in the system;

Gas valve

(see fig. 2)

• Unsc rew the screws connecting the gas valve to the

venturi.

• Disconnect the gas feed pipe and valve ring-nut at

the bottom of the room-sealed chamber.

• Remove the flanged elbow coupling of the existing

valve and fit it to the new valve; also fit a new cork

washer and a new rubber gasket.

• Replace the gas valve and re-assemble the

components following the above procedure in

reverse order.

• Replace all the gas seals.

• Fully tighten the gas connections.

• Switch on the electricity, water and gas supplies and

check for any gas leaks using a soapy solution or

leak detector spray;

gas valve

Fig. 2

heating

sensor

safety

thermostat

Fig. 1

MAINTENANCE INSTRUCTIONS

Electric fan (see fig. 1)

• Remove and dismantle the entire burner unit (see

“Cleaning the burner unit”).

• Use an 8 mm wrench to unscrew the four nuts

securing the electric fan to the gas manifold and then

remove the electric fan, noting the positions of the

washer.

• Remove the air intake duct, unscrew the two fixing

screws from the venturi and remove the electric fan,

paying particular attention not to damage the cork

gasket.

• Replace the electric fan and re-assemble the

components following the above procedure in reverse

order.

• Switch on the electricity, water and gas supplies and

check the soundness of the j oint by measuring the CO

levels;

D.H.W heat exchanger (see fig. 2)

•

Close the shut-off valve and drain the domestic hot

water circuit and central heating circuit of the water

heater.

• Disconnect the joints securing the heat exchanger to

the pipes.

• Unscrew the screws joining heat exchanger fixing

bracket to its support and remove it.

• Remove the heat exchanger.

• Fit new washers.

• Replace the heat exchanger and re-assemble the

components following the above procedure in reverse

order.

• Switch on the electricity, water and gas supplies, fill the

system with water and check for any leaks from the

joints.

Circulating pump

(motor body) (see fig. 3)

• Close the s hut-off valves and drain the central heating

circuit of the water heater;

• Use a 5 mm Allen key to unscrew the four screws

securing the motor body to the impeller body;

• Rem ove the motor body and check the condition of the

washer. If necessary, replace the washer;

• Replace the circulation pump and re-assemble the

components following the above procedure in reverse

order;

• Switch on the electricity, water and gas supplies and fill

the system with water. Check for any leaks from the

joints and bleed off any air from the circ uit. Restart the

water heater.

venturi

electric fan

Fig. 1

Fig. 2

D.H.W.heat

exchanger

fixing

nuts

washers

fixing

bracket

Fig. 3

circulating

pump

MAINTENANCE INSTRUCTIONS

Diverter valve (see fig. 1)

Replacing the motor

• Unscrew the fixing screws securing the transparent

cover of the diverter valve and remove the cover;

• Unscrew the two motor fixing screws and disconnect

the wires;

• Replace the motor and re-assemble the components

following the above procedure in reverse order;

• Replace the motor and re-assemble the components

following the above procedure in reverse order;

Replacing the diverter valve

• Close the s hut-off valves and drain the central heating

circuit of the water heater;

• Disconnect the joints securing the valve to the pipes;

• Replace the valve body and re-assemble the

components following the above procedur e in reverse

order;

• Switch on the electr icity, water and gas supplies and fill

the system with water. Check for any leaks from the

joints and bleed off any air from the circ uit. Restart the

water heater.

Modulation circuit board (see fig. 2-3)

• Open the control panel (see 6.4 “Accessing the water

heater”);

• Disconnect all the connectors, remove the

regulating knobs, unscrew the four fixing screws and remove the modulation circuit board;

• Replace the circuit board and re-assemble the

components following the above procedure in reverse

order;

• Switch on the electricity, water and gas supplies

and regulate the water heater (see 5.3 “Gas data”);

The preset parameters of the printed circuit

board correspond to an instantaneous type water heater fed by natural gas. W hen replacing the modulation circuit board, check the “Minimum heating flow rate” – Parameter 19 and “Max Heating power” – Parameter 20.

Electric fan circuit board (see figs. 2-3)

• Open the control panel (see 6.4 “Accessing the water

heater”);

• Disc onnect the two connectors from the circuit board,

unscrew the two fixing screws and remove the board;

• Replace the circuit board and re-assemble the

components following the above procedur e in reverse

order;

• Switch on the electricity, water and gas supplies.

electric fan circuit board

modulation circuit board

Fig. 2

electric fan circuit board

modulation circuit board

Fig. 3

diverter valve motor

Fig. 1

MAINTENANCE INSTRUCTIONS

Primary heat exchanger (see fig. 1)

• Close the shut-off valves and drain the central

heating circuit of the water heater;

• Switch off the power and gas supply to the water

heater;

• Rem ove and dismantle the entire burner unit (see

“Cleaning the condensation module and burner

unit”);

• Remove the gas valve;

• Remove the spring and then the condensate

drainpipe;

• Remove the fixing springs and then the delivery

and return pipes;

• Rem ove the s upport brac kets and pull out the heat

exchanger;

• Remove the regulation sensor from the old heat

exchanger and refit it together with the two

condensate drainpipes to the new one;

• Replace the heat exchanger and re-assemble the

components following the above procedure in

reverse order;

• Switch on the electricity, water and gas supplies

and fill the system with water. Check for any leaks

from the joints and bleed off any air from the

circuit. Restart the water heater, making sure that

there are no gas leaks;

Expansion vessel

(see fig. 2)

• Close the shut-off valves and drain the central

heating circuit of the boiler.

• Use a 19 mm spanner to unscrew the pipe

coupling to the vessel.

• Unscrew the fixing screws and rem ove the upper

mounting bracket. Remove the expansion vessel

from the left side of the boiler.

• Replace the expansion vessel and re-assemble the

components following the above procedure in

reverse order.

• Switch on the electricity, water and gas supplies

and fill the system with water. Check for any leaks

from the joints and bleed off any air from the

circuit;

primary heat

exchanger

flue connection

chamber

stainless steel

pipe coil

ceramic fibre

washer

Fig. 1

fixing bracket

expansion vessel

Fig. 2

INSTALLATION INSTRUCTIONS

6.8 Wiring diagr a m s

M4M6

23456678

1234561234567

2 3 4

5 6

M10

321

Zone valve management + option remote controller board

Zone valve contact closure

remote controller zone valve

Telephone control

Remote control

(option)

Storage cylind er timer

brown

EV2

EV1

SSSRIG

M10

M2M1

PRINTED CIRCUIT BOARD DIGITECH - SM20021

EXHAUST FAN type RG 128

yellow/green

fusibile 2A

brown

light-blue

green

light-blue

brown

orange

light-blue

brown

light-blue

black

red

black

orange

Heating

D.H .W.

brown

black

light-blue

orange

black

light-blue

brown

black

light-blue

black

Key

IG: Main Switch PA: Air Pressure switch TS: Safety thermostat TF: Thermo Fuse 216°F SR: Heating sensor SS: DHW sensor EV: Fan SE: Outside temperature sensor (optional) ER: Ionization electrode EA: Ignition electrode TRA: Ignition transformer VD: 3-way valve C: Circulating pump MF: Flowswitch micro PACQ: Water pressure switch VG: Electronic gas valve

OPTIONAL

PRINTED CIRCUIT BOARD KOND DT - SK11003 COD. 76702LA

INSTALLATION INSTRUCTIONS

Connecting the room thermostat (Option)

Connect the wires to the terminal board inside the instrument panel as follows: (Example with WEEK digital weekly chronostat):

a. switch off the power supply at the main switch. b. remove the front case panel of the water heater. c. slacken the screws and remove plate A (see fig.1). d. remove jumper TA -TA from the terminal board B; e. connect the room thermostat/chronostat wires;

When the wires have been connected, place plate “A" back to position and then the front case panel.

Connecting the outside temperature sensor (Option)

Connect the wires to the termi n al board inside the instrument panel as follows:

a. switch off the power supply at the main switch. b. remove the front case panel of the water heater. c. slacken the screws and remove plate A (see fig.1). d. connect the outside temperature sensor on contacts marked as SE-SE on the terminal board B ;

When the wires have been connected, place plate “A" back to position and then the front case panel.

L N Ta Se Se

CHRONOSTAT

Outside temperature sensor

Fig. 1

INSTALLATION INSTRUCTIONS

REMOTE "OPEN THERM"

SeSe

TaNL

Outside temperature sensor (option)

N Ta

Se Se

REMOTE "OPEN THERM"

Telephone control

Connecting the remote controller the outside te m perature sensor (option)

Connect the wires to the terminal board inside the instrument panel as follows:

a. switch off the power supply at the main

switch.

b. remove the front case panel of the water

heater.

c. slacken the screws and remove plate A

(see fig.1).

d. remove jumper TA-TA from the terminal

board B;

e. connect the remote controller wires; f. connect the outside temperature sensor on

contacts marked as SE-SE on the terminal board B.

When the wires have been connected, place plate “A" back to position and then the front case panel.

Connecting the remote controller and the tel ephone control (option)

Connect the wires to the termi n al board inside the instrument panel as follows:

a. switch off the power supply at the main

switch.

b. remove the front case panel of the water

heater.

c. slacken the screws and remove plate A

(see fig.1).

d. remove jumper TA-TA from the terminal

board B;

e. connect the remote controller and the

telephone control wires;

f. Active the telephone control through the

parameter no.16 (see 5.1 “Parameters Table”)

When the wires have been connected, place plate “A" back to position and then the front case panel.

Fig. 2

Fig. 1

INSTALLATION INSTRUCTIONS

Outside

temperature

sensor (option)

Terminal block

REMOTE "OPEN THERM"

Zone valve management +

option remote controller board

Remote control and zone valves wiring

For the installation of a zone valve p.c.b, it is necessary to access the main p.c.b for electrical connection (see 6.3 “Accessing the water heater”) and to activate the parameter no. 16 (see 5.1 “Parameters table”).

INSTALLATION INSTRUCTIONS

REMOTE "OPEN THERM"

Telephone control

Terminal block

Outside

temperature

sensor (option)

Zone valve management +

option remote controller board

Remote control, zone valves and telephone control wirings

INSTALLATION INSTRUCTIONS

Regulating the Flow tempera ture in accordance wi th the outdoor temperature

The outdoor sensor has to be connected di rectly to circuit board SM 20021. The sensor can thus be managed in one of two ways:

• In case of remote cont roller + outdoor t emperature sensor installation, the climat ic c ompensation curve is set by

the remote itself (see remote control installation and operating manual).

• In case of outdoor tem per ature s ensor only installation, the climatic com pens ation curve is s et using the centr al

heating control knob. As the knob (see fig. 2) is rotated, the numbers corresponding to the curve shown in figure

1 are displayed The factors governing the correction are reported in figure 1. The selection of the c ompensation curve is determined by the maximum delivery temperature Tm and the minimum

outdoor temperature Te.

N.B. The y-axis values of the delivery temperature Tm refer to standard 167-86 °F appliances or 104-77 °F floor- mounted appliances. The type of appliance can be programmed using parameter 3 (see 5.1 “Parameter programming”).

OUTDOOR SENSOR

DELIVERY TEMPERATURE CORRECTION AS A FUNCTION OF OUTSIDE

TEMPERATURE WITH RESPECT TO THE POSITION OF THE HEATING

TEMPERATURE CONTROL SET BY THE USER

TM-MAX/MIN = delivery temperature range selected

158

MIN

81 79

113 104

122

140 131

149

7577

73 7072 68 6164 63 59

MAX

104 176

167

Te = Outdoor temperature Tm = delivery temperature

10505452 4648

4143 39 3637 34 21273032 28 25 23 1619 18 14 12

Te (°F)

597

Fig. 1

Fig. 2

120V 60Hz

INSTALLATION INSTRUCTIONS

FILLING LOOP

MAX . L ENGHT 8 mt.

HOT WATER SENSOR LEAD

REMOTE DHW CYLINDER FLOW

REMOTE DHW CYLINDER RETURN

PRINTED CIRCUIT BOARD CVI-M SM20021

6.9 D.H.W. Sensor connection

Fig. 1

INSTALLATION INSTRUCTIONS

6.10 Troubleshooting

ERROR

CODE

PROBLEM POSSIBLE CAUSE

REMEDY

E01

NO FLAME

WITH NO IGNITION

a. NO GAS. b. IGNITION ELECTRODE B ROKEN OR GROUNDED. c. GAS VALVE MALFUNCTION d. MECHANICAL MINIMUM ADJUSTMENT (ON G AS

VALVE) SET TOO LOW OR SLOW IGNITION ADJUSTMENT SET TOO LOW.

e. GAS VALVE INLET PRESSURE TOO HIGH (FOR

PROPANE WATER HEATERS ONLY );

WITH IGNITION

f. POWER SUPPLY LIVE AND NEUTRAL WIRES

INVERTED.

g. IONIZATION ELECTRODE MALFUNCTION. h. IONIZATION ELECTRODE CABLE DISCONNECTED.

a. CHECK MAINS SUPPLY. b. REPLACE PART. c. REPLACE PART d. REGULATE MECHANICAL

MINIMUM OR SLOW IG NITION.

e. CHECK THE MAXIMUM PRESSURE

SETTING.

f. CONNECT THE POWER SUPPLY

WIRES CORRECTLY.

g. REPLACE PART. h. CONNECT THE IONIZATION

ELECTRODE W IRE.

E02

SAFETY THERMOSTAT TRIPPED (203°F) / AIR PRESSURE SWITCH TRIPPED

SAFETY THERMOSTAT

i. THERMOSTAT MALFUNCTIO N O R OUT O F

CALIBRATION.

j. THERMOSTAT CABLE DI SCONNECTED.

AIR PRESSURE SWITCH

k. SWITCH OUT OF ORDER l. INLET OR OUTLET FLUE GAS DUCTS

OBSTRUCTED

m. SWITCH CABLE NOT STABLE

SAFETY THERMOSTAT

i. REPLACE PART. j. CHECK THE W IRING ;

AIR PRESSURE SWITCH

k. REPLACE PART l. CHECK FLUE GAS DUCTS m. CHECK CABLE

E03

FLUE SAFETY THERMOFUSE

THERMOFUSE BROKEN;

o. THERMOFUSE CABLE DICONNE CT ED; p. THERMOFUSE LOCK OUT. (HIGH F LUE

TEMPERATURE)

REPLACE PART;

o. CHECK THE ELECTRICAL

CONNECTION;

p. RESTART AND CHECK THE

THERMOFUSE

H20

NO WATER IN

THE SYSTEM

INSUFFICIENT WATER PRESSURE IN THE SYSTEM (STOPS AT 4.5 PSI (0.3 BAR)).

r. WATER PRESSURE SWITCH CABLE DISCONNECTED.

s. WATER PRESS URE SWITCH MALF UNCT ION.

FILL THE SYSTEM;

r. CHECK T HE WIRING;

s. REPLACE PART;

E05

HEATING SENSOR

SENSOR MALFUNCTION OR OUT O F CALIBRATION (RESISTANCE VALUE 10 kOhms AT 77 °F).

u. SENSOR CABLE DISCONNE CT ED OR WET.

REPLACE PART;

u. CHECK THE ELECTRICAL

CONNECTION;

E06

D.H.W SE NSOR

SENSOR MALFUNCTION OR INCORRECT (RESISTANCE VALUE 10 kOhms AT 77 °F).

w. SENSOR CABLE DISCONNECTED OR WET.

REPLACE PART;

w. CHECK THE ELECT RICAL

CONNECTION ;

E16

FAN

BURNT FAN

REPLACE PART

E22

PARAMETER

PROGRAMMING REQUEST

LOSS OF MICROPROCESSOR MEMORY;

REPROGRAM PARAMETERS;

E35

FLAME DETECTION MALFUNCTION

IONIZATION ELECTRODE MALFUNCTION

aa. IONIZATION ELECTRODE CABLE MALFUNCTION

bb. PRINTED CIRCUIT BOARD MALFUNCTION

CLEAN IT OR REPLACE PART

aa. REPLACE PART

bb. REPLACE PART

E42

FAN PRINTED CIRCUIT BOARD

cc.

FAN PRINTED CIRCUIT BOARD MALFUNCTION

cc.

REPLACE PART

INSTALLATION INSTRUCTIONS

120V 60Hz

6.11 Diagnostics

■ Error codes:

E01 Ionization Lock Out E02 Safety Thermostat Tr ipped / Air Pr ess ur e Switch Tr ipped E03 Flue Gas Thermofuse Tr ipped H2O Low Water Pressure Alarm E05 Heating Sensor Malfunction E06 D.H.W Sensor Malfunct ion E16 Electric Fan Malfunction E22 Parameter Programming Request E35 Flame Detection Malfunction E42 Fan Speed P.C.B. Malfunction

■ Function codes :

Code

Function

Description

Flue test function active

(Chimney-Sweeper)

Pressing the “service” button f or 7 sec onds

activates the Flue test function. Pressing the water heater off butt on deactivates the function. The Flue test function operates t he water heater at the maximum heating pressure for 15 minutes without any modulation. The function

is useful for combustion test ing.

Frost Protection

Central heating circuit

The function is activated when the heating

sensor senses a temperature of 41 °F. The water heater operates at minimum gas pressure with the 3-way diverter valve in the winter position. The function is deactivated when the temperature detected by the sensor

reaches 86°F.

Frost Protection

D.H.W. circuit

The function is activated when the sensor

senses a temperature of 40°F. The water heater operates at minimum gas pr ess ur e. The 3-way diverter valve closes in the summer position and heats the D.H.W. circuit. The function is deactivated when the D.H.W.

sensor detects a temperature of 46°F.

31 Incompatible Remote Control

Function active when the remote control

connected is not compatible with the printed

circuit board.

FLOW CHART

PARTS LIST

6.12 Parts List / Available fr om FLO WMAX

Main components

CODE

DESCRIPTION

20094-LA

CONDENSING EXCHANGER

20079LA

PLATE EXCHANGER 40P.

24060LA

PUMP STAR S 21 KU RSL-PL6 UL/CSA

25-00274

PUMP UPS 15-58 CACAO ETL MOLEX-PN98282128

25-00045

EXPANSION VESSEL 6 lt. – 1,58 gal

25-00274

SAFETY VALVE 3/4"M - 3/4"F 30 psi

27044LA

CONDENSATE TRAP

35031LA

IGNITION ELECTRODE

35032LA

IONISTATION ELECTRODE

36072LA

VENTURI MINIFOLD

36075LA

GAS VALVE UL/CSA

37033LA

FAN RG 128 / 1300 UL/CSA

59015LA

WATER PRESSURE SWITCH PC 5411 BRASS

59021LA

AIR PRESSURE SWITCH 3.28 UL/CSA

73516LA

HTG CLIP SENSOR FOR PIPE 17/18 mm BLUE-T7335D1123B

73517LA

THERMO FUSE 102°C RED ISOTHERM. 1/4" 4X45

76702LA

PRINTED CIRCUIT BOARD KOND DT - SK11003 (FAN)

76719LA

MAIN PRINTED CIRCUIT BOARD UL/CSA - SM20021

86006LA

SAFETY THERMOSTAT 95 °C

12-00196

WATER PRESSURE GAUGE

88022LA

TRANSFORMER UL/CSA

96007LP

FLOWSWITCH

96018LA

NO-RETURN VALVE

96055LA

AIR VENT VALVE 1/4

96093LA

DIVERTER ACTUATOR VALVE UL/CSA

Terms and Conditions of S ale

E-mail: info@flowmaxtechnologies.com

Warranty: W arranty period is t welve (12) months from date of purchase. Warrant y includes parts and labour (c heck with

FLOWMAX Technologies Inc . for labour allowance rates ). An extended twelve (12) m onth warranty is avai lable, where applicable on parts; please consult FLOWMAX Technologies Inc. Cost of returning the goods to FLOWMAX Technologies Inc . is by others. All warranty parts are t o be prepaid by the custom er. No warranty will be in effect until the equipment is paid f or in full. Warranty on all equipment sold to c ustomer may be suspended, at FLOWMAX Technologies Inc.’s discretion, until the customer’s account is in good standing. Warranty covers defective com ponents only. Norm al wear and abuse is not c overed. The customer’s account will be credited only af ter t he defecti ve part has been examined by FLOWMAX Technologies Inc. or t he vendor and determined to be defective.

All Energy Star approved Models have 5 year warranty on parts

FIRST YEAR

Limited Warranty for Condensing Wat er Heat er (All Residential Water Heaters) (Includes Space Heating Domestic Water ‘Combo’ Heating Applications)

FLOWMAX warrants that i ts combo water heaters are free from defec ts in materi als and workmanship for one (1) year from the date of inst allation. If any parts are found to be defective in m anufacture, FLOWMAX will provide replacement of such def ective parts.

SECOND THROUGH THE TENTH YEAR

Limited Warranty for Primary Heat Exchangers on all Energy Star approved models (Residential Water Heaters) (Space Heating Applicat i ons O nl y)

FLOWMAX warrants that t he stainless steel tube (primary) heat exchanger of it s residential condensing gas water heater is free from defects in material and workmanship from the date of installation for the second through the tenth year to the original purc haser only. If during suc h time period, any part of the stainless steel tube heat exchanger is found to be defective, FLOWMAX will provide replacement for the original heat exchanger.

SPECIAL FIVE YEAR WARRANTY

Limited Warranty for Flat Plate Heat Exchangers (Domestic Hot Water Heat Exchangers-Residential Use Only)

FLOWMAX warrants that the stainl ess steel , flat plat e heat exchanger (used for the product ion of dom estic hot water) is free from defects in material and workmanship for f ive (5) years from the date of installation. Any coagulation or block age of the normal water flow through the heat exchanger, due to trapped sediment, heavy calcification, l ime deposits minerals and or other waterborne build-up in the plate heat exchanger, or corrosion due to chemical anti-freeze addit ive is not considered def ects in workmanshi p and therefore any malfunction or damage to other parts or com ponents resul ting from these bui ld-ups in the pl ate heat exchanger is not covered under the terms of this warranty.

Limitations on Liabili ty This Warranty Does No t Cover

1. Install ations by other than licensed plumber, gas installer or heating c ontractor.

2. Install ations of equipment for other purposes than those intended by the instructions supplied with t his equipment.

3. Installations of equipment for purposes other than residential space heating and domestic hot water production.

4. Any product which i s improperly installed or moved f rom its original place of i nstallation.

5. Any product which has been repai red or repl aced with other than FLOWMAX factory parts.

6. Any product m odified in any way, misused or damaged or which has been used c ontrary to warrantor’s written instructions.

7. Introduct i on of l i qui ds other than potable water or potable water/glycol mi xtures i nto this product.

8. Any dam age t o t he product c aused by fai lure to m ai ntain t he unit properl y, im proper volt age, improper gas pressure, improper water pressure, f l ood, freezing, electrical surges , fire, lightning, or Act s of God.

9. Nicks , scratches or discolorat i on of decorative finishes.

10. Installation, pl umbing, gas piping and wiring not integral to t he product.

11. Any FLOWMAX product ins talled in an improper environment (e.g. Corrosive, dusty, and or chemic ally contaminated).

12. Condensate damage due to im properl y i nstalled or lack of a condensat e trap (drain).

13. Damages due to ac cidents, abuse, mis use, improper installations , misapplication or inc orrect sizing and lack of regular recommended maintenance.

14. The water heater is installed outdoors.

15. Failures resulting in the FLOWMAX unit not being properly maintained as per the recommended maintenance.

16. Failures not reported to FLOWMAX Technologies Inc. within t he time period specified above.

17. Products damaged in shipment or storage or otherwise without faul t of FLOWMAX Technologies Inc .

18. The water heater has not been installed in ac cordance with all applicable local plum bing and/or building code and/or regulations or in their absence with the latest edition of the natural gas and propane installation code and/or the Nat i onal Electrical Code or Canadian Electri cal code.

19. This warranty does not cover any expenses related to the removal or re-installation process. The homeowner will be responsible for the cost of removing and re-installing the alleged def ective part or its replacement and all labor and material connected therewith, and transport ation to and from FLOWMAX.

Terms and Conditions of S ale

E-mail: info@flowmaxtechnologies.com

20. The warranty cannot be cons idered as a guarantee of workmanship of an installer connected with t he installation of the condensing water heater or as imposing a liability of any nature for unsatisfactory performance as a result of f aul ty workmanship in the installat i on, which liability is expressly disc l ai med.

Exclusion of Incidental and Consequential Damages/ Disclaimers

FLOWMAX will not pay in contract or in t ort, consequential or incidental damages under this warranty, both of which are specifically excluded. This means we shall not be responsible for any loss, expense or damage caused by any defect in the water heater, other than the water heater itself. The maximum liability of FLOWMAX in connection with this limit ed warranty shall not in any case exceed price of the part claimed to be defective, or price of the water heater if the entire water heater is claim ed to be defective. “Incident al” damages include expenses of inspection, obtaining substitute goods, t ransportation, etc. “Consequential” damages include i njury to persons or property inconvenience or other consequential damage resulting from a breach of warranty.

Owner’s Responsibilities

This Warrant y is iss ued to the original purc haser only. This produc t must be used and cared for in acc ordance with the instruction manual. You are responsible for required periodic maintenance or service. See your instruction manual f or details. You m ust be able to verify the i nstallation date of the product against which you make and warranty claim. The origi nal bill of sale, installer’s i nvoice or other similar document is required to verify warranty. If you cannot show evidence of the actual date of installation, warranty coverage will be considered to start on the date the product i s shipped from our distributor. The attached W arranty Regis tration Form must be fil led out compl etely and returned to FLOW MAX. Failure to do s o will prevent or delay our being able to contact you (or the person resi di ng at this address) in case of a rec al l or i mportant product safety alert . Your warranty information will be held stric tly confidential.

Warranty Registration Form

E-mail: info@flowmaxtechnologies.com Website

www@flowmaxtechnologies.com

PLEASE COMPLETE THE FOLLOWING INFORMATION AND RETURN WITHIN 30 DAYS OF

COMMISSIONING THE APPLIANCE (HOT WATER HEATER)

Please Print Clearly

Sold To:

Homeowners Name: Address: Unit #: City: Province: Postal Code: Phone No. Fax: Email Address: Item Purchased:

Unit Model: Serial No. Date of Purchase: Date of Startup: Purchased From:

Installing Contractors Name: Address: City: Province: Postal Code: Phone No. Fax: Email Address:

Signature: Date:

To ensure your warranty protection, please complete and return this form to

FLOWMAX Technologies Inc.

Attention: Product Registration

Warranty Registration Form

E-mail: info@flowmaxtechnologies.com Website

www@flowmaxtechnologies.com

Please complete the following information and return it with the part request

Date:

Contractor / Distributor / Rental Provider Name:

Address: Unit # City: Prov. Postal Code: Phone # Other # Email:

Homeowner Name: Address: Unit # City: Prov. Postal Code: Phone # Other # Email:

Model Number: Serial number: Date installed: Date Failed: Date Serviced:

Failed Part Number: Replacement Part Number: Failed Part Description: Reason for Failure:

“FAILED, NOT WORKING, DEFECTIVE” etc.,

is not acceptable and will be considered incomplete.

Incomplete warranty forms will not be accepted or considered.

Only a detailed explanation will be considered for warranty.

All parts returned must be accompanied with a completed warranty tag.

FLOWMAX Technologies

209 Citation Drive, Units 5&6, Concord, Ontario, L4K 2Y8 Tel; 905-264-1414 Fax; 905-264-1147 E-mail: info@flowmaxtechnologies.com Web Site: www.flowmaxtechnologies.com

FLOWMAX 170 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual