John Wood JW6 F307, JW6 F307V, JW6 F507, JW6 317RF, JW6 517RF Installation And Operating Manual

Installation and Operating Manual

OIL FIRED WATER HEATER

WARNING: If the information in these
instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.

- Improper installation, adjustment, altera­tion, service, or maintenance can cause
injury or property damage. Refer to this
manual. For assistance or additional
information, consult a qualified Oil­Burner Technician or your oil supplier.

- Do not store or use gasoline or other
flammable vapours and liquids in the
vicinity of this or any other appliance.

- Installation and service must be
performed by a qualified Oil-Burner
Technician or your oil supplier.

- WHAT TO DO IF YOU SMELL OIL:

• Immediately call your oil supplier.
Follow the oil supplier's instructions.

ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED.
IF YOU ARE UNSUCCESSFUL, PLEASE CONTACT THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.

KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE

WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.

1502 331552-000

TABLE OF CONTENTS

I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Consumer Responsibilities . . . . . . . . . . . . . . . . . . 3

II) Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation Codes . . . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Warning (Flammable Vapours) . . . . . . . . . 4

Safety Warning (Scalding) . . . . . . . . . . . . . . . . . . 4

Safety Warning (Carbon Monoxide) . . . . . . . . . . . 5

Relief Valve Requirements (T&P) . . . . . . . . . . . . . 5

Fuel Specifications . . . . . . . . . . . . . . . . . . . . . . . . 6

III) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Unpacking the Water Heater. . . . . . . . . . . . . . . . . 6

Location Requirements . . . . . . . . . . . . . . . . . . . . . 6

In Earthquake Zones

Clearances and Accessibility . . . . . . . . . . . . . . . . 7

Oil Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Burner Installation . . . . . . . . . . . . . . . . . . . . . . . . . 7

Air Requirements . . . . . . . . . . . . . . . . . . . . . . . . 10

Vent and Exhaust Connections . . . . . . . . . . . . . . 10

Vent Pipe System
General Chimney Requirements
Flue Pipe
Draft Regulator
Chimney
Blocked Vent Safety Switch
Installation
Power Venting
Installation Of Power Venter

Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Piping Installation
Mixing Valves
Closed System/Thermal Expansion
Temperature And Pressure (T&P) Relief Valve
The Temperature And Pressure Relief Valve:
The Discharge Line/Driptube:
Temperature-Pressure Relief Valve And

Pipe Insulation
Vacuum Relief Valves
To Replace Existing Aquastat

Electrical Supply . . . . . . . . . . . . . . . . . . . . . . . . . 16

Filling The Water Heater

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

IV) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Water Temperature Regulation . . . . . . . . . . . . . . 18

To adjust the thermostat

Water Heater Operation . . . . . . . . . . . . . . . . . . . 19

Stacking
Water Heater Sounds
Smoke/Odour
Anode Rod/Water Odour

V) Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Professional Maintenance
Flue Pipes
Combustion Tests
Routine Preventative Maintenance

(By Owner/Operator)
Draining And Flushing
Temperature And Pressure Relief Valve
Anode Maintenance
To check/replace the anode:
Valve Washer Replacement
Cleaning Instructions, Flue Passages Of

The JW F657 Heater
Shut Down For Extended Periods
Re-Starting The Heater After Shut-Down

VI) Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Read Before Proceeding . . . . . . . . . . . . . . . . . . 23

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

VII) Oil Burner Listing . . . . . . . . . . . . . . . . . . . . . . . . . 25

RETAIN THESE INSTRUCTIONS IN A SAFE LOCATION FOR FUTURE REFERENCE

– 2 –

Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater.
Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and
others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important

that the meaning of each safety message is understood by you and others who install, use or service this water heater.

This is the safety alert symbol. It is used to alert you
to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.

DANGER indicates an imminently

DANGER

WARNING

CAUTION

CAUTION

hazardous situation which, if not avoided,
will result in death or injury.

WARNING indicates a potentially
hazardous situation which, if not avoided,
could result in death or injury.

CAUTION indicates a potentially
hazardous situation which, if not avoided,
could result in minor or moderate injury.

CAUTION used without the safety alert
symbol indicates a potentially hazardous
situation which, if not avoided, could
result in property damage

All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message
and how to avoid the risk of injury.
This product is certifi ed to comply with a maximum weighted average of 0.25% lead content as required in some areas.

I) INTRODUCTION

Thank you for purchasing a John Wood Oil Fired Water
Heater. Properly installed and maintained, it will provide years

of trouble free service.
This Oil Fired Water Heater is suitable for potable water
heating and space-heating applications but not for space
heating only applications. It is your responsibility to ensure
that the correct size of your water heater was determined by
calculations that included consideration of heat loss.

instructions, you should not proceed. Enlist the help of a
qualifi ed service technician to install this water heater.

Examples of qualifi ed service technicians include those
trained in the plumbing and heating industry, local oil supply
personnel or an authorized service person.

The manufacturer and seller of this water heater will not
assume any liability for any property damage, personal injury
or death resulting from improper sizing, installation or failure
to comply with these instructions.

Consumer Responsibilities

This manual has been prepared to acquaint you with the
installation, operation and maintenance of your oil fi red water
heater and provide important safety information in these
areas. It is your responsibility to ensure that your water heater
is properly installed and cared for.
FAILURE TO FOLLOW THE INSTRUCTIONS IN THIS
MANUAL MAY RESULT IN SERIOUS BODILY INJURY
AND/OR PROPERTY DAMAGE. THOROUGHLY READ
AND UNDERSTAND ALL INSTRUCTIONS BEFORE YOU
ATTEMPT TO INSTALL, OPERATE OR MAINTAIN THIS
HEATER.
Installation and service requires trade knowledge in the areas
of plumbing, electricity, venting, air supply and oil supply. If
you lack these skills or have diffi culty understanding these

– 3 –

The warranty on this water heater is in effect only when the
water heater is installed and operated in accordance with
these instructions. An identifying data plate can be found at
the front of your water heater. When referring to your water
heater, always have the information listed on the data plate
readily available.

Protect your warranty: Regularly service your water heater as
directed in the "Maintenance" section of this manual.
Retain your original receipt as proof of purchase.

Do not discard this manual. You or future users of this water
heater will need it for reference.

II) SAFETY

In addition to the installation instructions found in this manual,
the water heater must be installed in accordance with all local
and provincial codes or, in the absence of such, with the latest
editions of the following specifi cations.

Installation Codes

“Installation Code for Oil-Burning Equipment" (B139) and
“Canadian Electrical Code" Part 1 (C22.1) available from:

CSA Group,
Toronto, Ontario,
www.shopcsa.ca

Check your phone listings for the local authorities having
jurisdiction over your installation.
Important: Installation and service of an oil fi red water
heater and burner must be performed by a qualifi ed Oil-
Burner Technician to comply with local and provincial codes
applicable to this type of equipment. All supply equipment,
installation, approvals, permits, inspections, etc. are the
responsibility of the owner of this water heater. Consult your
local authorities for regulations specifi c to your area.

Safety Warning (Flammable Vapours )

WARNING

FLAMMABLES

FIRE AND EXPLOSION HAZARD

Can result in serious injury or death

Do not store or use gasoline or other flammable vapours and liquids
in the vicinity of this or any other appliance. Storage of or use of gasoline
or other flammable vapours or liquids in the vicinity of this or any other
appliance can result in serious injury or death.

There is a risk of property damage, personal injury or death
from the by-products of combustion (e.g., flue gases), in
using fuel-burning appliances such as water heaters. Areas
that may not be suitable for water heater installation include
those where flammable liquids, gasoline, solvents, adhesives
etc. are stored, or where engine-driven equipment or vehicles
are stored, operated or repaired. These, and similar products,
should not be stored or used near the water heater or air
intake. Due to the nature of air movement, flammable vapours
can be carried some distance from the point of storage. A
water heater igniter or burner flame can ignite these vapours
causing a flashback, fire or explosion, which may result in
severe property damage, serious personal injury or death.
If flammable liquids or vapours have spilled or leaked in the
area of the water heater, leave the area immediately and call
the fire department from a neighbor’s home. Do not attempt to
clean the spill until all ignition sources have been extinguished.

Flammable Vapours

Safety Warning (Scalding)

Water temperature over

DANGER

HOT

HOT

BURN

Some people are more likely to be permanently injured by
hot water than others. These include the elderly, children,
the infirm and the physically/mentally disabled. Table 1
(published by U.S. Government Memorandum, 1978) shows
the approximate time-to-burn relationship for normal adult
skin. If anyone using hot water provided by the water heater
being installed fits into one of these groups or if there is a local
code or provincial law requiring a certain water temperature
at the point of use, then special precautions must be taken.
Use tempering valves, also known as mixing valves, in the
hot water system to reduce the risk of scalding at point-of­use such as lavatories, sinks and bathing facilities. Such
precautions must be followed when this heater is operated in
combination with dishwashing or space heating applications.

Water

Temperature

°C (°F)

44 (110) (normal shower temp.)
47 (116) (pain threshold)
47 (116) 35 minutes 45 minutes
50 (122) 1 minute 5 minutes
55 (131) 5 seconds 25 seconds
60 (140) 2 seconds 5 seconds
65 (149) 1 second 2 seconds
68 (154) instantaneous 1 seconds

(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept.
15,1978)

Table 1 Scald times

Time for 1st

Degree Burns

(Less Severe Burns)

52°C (125°F) can cause
severe burns instantly
resulting in severe injury or
death.

Children, the elderly and the
disabled and are at highest
risk of scald injury.

Feel water before bathing or
showering.

Temperature limiting devices
such as mixing must be
installed when required by
codes and to ensure safe
temperatures at fixtures.

Time for Permanent

Burns 2nd & 3rd

Degree (Most Severe

Burns)

– 4 –

Safety Warning (Carbon Monoxide)

WARNING

Breathing Hazard - Carbon Monoxide Gas

• Install vent system in accordance with codes.

• Do not operate water heater if flood damaged.

• Do not operate if soot buildup is present.

• Do not place chemical vapour emitting products
near water heater or vent termination hood.

• Gas and carbon monoxide detectors are
available.

Breathing carbon monoxide can cause brain damage or death.

Always read and understand instruction manual.

If this water heater has been exposed to flooding, freezing,
fire or any unusual condition, do not put it into operation until
it has been inspected and approved by a qualified service
technician.

THESE CONDITIONS CAN RESULT IN UNSEEN INTERNAL
DAMAGE and are not subject to warranty coverage.

WARNING

Explosion Hazard

• Flammable hydrogen gases may

be present.

• Keep all ignition sources away

from faucet when turning on hot
water.

As with all fuel burning equipment, this heater requires an
adequate supply of air for combustion and ventilation. An
insufficient air supply can result in poor combustion or the
re-circulation of the flue gases. Such a condition can cause
soot build-up and present a fire hazard. Flow reversal of flue
gases can cause an increase of carbon monoxide inside of
the dwelling that could result in serious bodily harm or death
from asphyxiation.
MAKE SURE THE FLOW OF COMBUSTION AND
VENTILATION AIR IS NOT RESTRICTED.

Relief Valve Requirements (T&P)

All water heaters must be fitted with a proper temperature
and pressure relief valve. These valves must be certified as
meeting the requirements of the “Standard For Relief Valves
For Hot Water Supply Systems, ANSI Z21.22/CSA 4.4”.

WARNING

Explosion Hazard

• Temperature-pressure relief

valve must comply with ANSI
Z21.22-CSA4.4 and ASME
code.

• Properly sized temperature-

pressure relief valve must be
installed in opening provided.

• Do not plug, block, or cap the

discharge line.

• Failure to follow this warning

can result in excessive tank
pressure, serious injury or
death.

Caution: Hydrogen gas can be produced in a hot water
system served by this heater that has not been used for a long
period of time (generally two (2) weeks or more). Hydrogen

gas is extremely flammable and can ignite when exposed
to a spark or flame. To reduce the risk of injury under these

conditions, it is recommended that the hot water faucet be
opened for several minutes at the kitchen sink before using
any electrical appliance connected to the hot water system.
Use caution in opening faucets. If hydrogen is present, there
will probably be an unusual sound such as air escaping
through the pipe as the water begins to flow. There should be
no smoking or open flame near the faucet at the time it is open.

CAUTION:
Possible cancer hazard by inhalation. Can
cause respiratory, skin and eye irritation.

This product contains fiberglass wool and ceramic fiber
materials. Airborne fibers from these materials have been
listed by the State of California as a possible cause of cancer
through inhalation. Use special care when handling ceramic
fiber (chamber lining and base insulation) materials. Ceramic
fibers can be converted to chrystobalites, a substance listed
as a probable cause of cancer. Suppliers of fiberglass wool
products recommend the following measures be taken when
handling these materials:

Precautionary measures:

• Avoid breathing fiberglass dust.

• Avoid contact with skin and eyes.

• Use a National Institute for Occupational Safety and Health

(NIOSH) approved dust/mist respirator.

• Wear long-sleeved, loose fitting clothing, gloves and eye

protection.

• Wash work clothes separately from other clothing. Rinse

washer thoroughly.

– 5 –

Removing the burner may generate airborne fiber concentration
requiring additional protection.
First aid measures:

• Eye contact - Flush eyes with sterile water to remove

foreign objects. If irritation or other symptoms persist, seek
medical attention.

• Skin contact - Wash affected areas gently with soap and

warm water after handling.

Fuel Specifications

All JOHN WOOD brand water heaters are designed to burn
only fuels not heavier than No.2 (furnace) oil.

WARNING

• Do not use gasoline, crankcase drainings
or any oil containing gasoline.

• Do not tamper with unit or controls.

• Never burn garbage or paper in the unit,
and never leave paper or rags around it.

• Do not experiment with the burner.

III) INSTALLATION

Unpacking the Water Heater

WARNING

Excessive Weight Hazard
Use two or more people to move and install
water heater. Failure to do so can result in
back or other injury.

Important: Do not remove any permanent instructions, labels,

or the data label from outside of the water heater or on the
inside of panels.

• Remove exterior packaging and place installation

components aside.

• Inspect all parts for damage prior to installation and start-

up.

• Completely read all instructions before attempting to

assemble and install this product.
If you observe damage to the water heater or any of its
components, DO NOT ASSEMBLE OR INSTALL IT OR MAKE
ANY ATTEMPT TO FIX THE DAMAGED PART(S). Contact
the place of purchase for further instructions.

• After installation, dispose of packaging material in the

proper manner.

Location Requirements

The water heater must be installed indoors in an area not
subject to freezing temperatures and in a vertical position
on a level surface. Water heaters located in unconditioned
spaces (e.g., basements etc.) may require insulation of the
water piping, drain piping and venting to protect against
condensation.
The water heater must be installed on a non-combustible
floor, as close to the chimney as practical. Select a location as
centralized within the piping system as possible. The heater
should be located in an area where leakage of the tank or
connections will not result in damage to the area adjacent
to the water heater or to lower floors of the structure (see
“IMPORTANT” notice on the following page). Before installing
this water heater, consideration and planning must be given
to the following details:

• Proximity to walls and other objects (see Figure 1 through

Figure 3).

• Access to oil supply (see "Oil Supply").

• Routing and support of the vent piping and termination

(see "Vent and Exhaust Connections").

• Position of water supply and placement of water piping

and floor drain (see "Water Supply").

• How and where to obtain combustion and ventilation air

supply. (see "Air Requirements").

• Connection to the electrical service. (see "Electrical

Supply").

– 6 –

In Earthquake Zones
Note: The water heater must be braced, anchored, or

strapped to avoid moving during an earthquake. Contact local
utilities for code requirements in your area.

CAUTION

Property Damage Hazard

• All water heaters eventually leak.

• Do not install without adequate drainage.

Important: This water heater must be installed strictly in
accordance with the instructions enclosed, and local electrical,
fuel and building codes. It is possible that connections to the
water heater, or the water heater itself, may develop leaks.
IT IS THEREFORE IMPERATIVE that the water heater be
installed so that any leakage of the tank or related water piping
is directed to an adequate drain in such a manner that it cannot
damage the building, furniture, floor covering, adjacent areas,
lower floors of the structure or other property subject to water
damage. This is particularly important if the water heater is
installed in a multi-story building. THE MANUFACTURER
WILL NOT ASSUME ANY LIABILITY for damage caused by
water leaking from the water heater, pressure relief valve,
or related fittings. Select a location as centralized within
the piping system as possible. In any location selected, it is
recommended that a suitable drain pan be installed under
the water heater. This pan must limit the water level to a
MAXIMUM depth of 45mm (1 3/4 in.) and have a diameter that
is a minimum of 50mm (2 in.) greater than the diameter of the
water heater. Suitable piping shall connect the drain pan to
a properly operating floor drain. When used with a fuel-fired
heater, this drain pan must not restrict combustion air flow.

Oil Supply

All aspects of oil tank location and installation, tank size,
oil piping supply and burners, including any fittings, valves,
filters or any fuel handling components must comply with the
current edition of:

• “Installation Code for Oil Burning Equipment" (B139).

• Local codes and regulations.

• Information provided with burner and fuel pump.

When an appliance using a float valve between the supply tank
and the burner is connected to a supply tank with a capacity
over 40 L (9 imperial gallons), a valve operated by a fusible
link shall be installed in the fuel line adjacent to, and upstream
from, the float valve.

Burner Installation

The installation of these units shall be in accordance with
the current edition of “Installation Code for Oil-Burning
Equipment" (B139) , local codes and the manufacturer’s
instructions. The burner should be installed only by a qualified
Oil-Burner Technician.

WARNING
This installation must be performed by a
qualified Oil-Burner Technician in accor­dance with the burner manufacturer's
instructions and diagrams. The installation
and maintenance of the water heater must
follow all of the instructions in this manual.
Improper installation can cause injury or
property damage. Heater failure that is a
result of improper installation, operation or
maintenance is not covered by warranty.

Clearances and Accessibility

The minimum clearances between the heater and combustible
materials are listed in Figure 1.
Note: These requirements are also listed on the data plate
located on the front of the water heater.
A minimum of 600mm (24 in.) of front clearance and 100mm
(4 in.) on each side should be provided for inspection and
service.

WARNING

Fire Hazard

For continued protection against
risk of fire:

• Do not install water heater on

combustible floor.

• Do not operate water heater if

flood damaged.

– 7 –

SEE TABLE

NOTE: JW6 F307V requires additional
“Through-the-wall Vent Kit” available in
3 lengths:
5’ (63320),
10’ (63321) or
20’ (63322).
Refer to additional “Installation Instructions
for Through-the-wall Venting Components"
that is supplied with the JW6 F307V.

FLUE

COMBUSTIBLE

CEILING

FLUE

SIZES

SEE TABLE

TOP

SEE TABLE

FLUE

SEE TABLE

DRAFT

REGULATOR

457mm

(18 in.)

MIN.

600mm (24 in.) MIN.

FOR SERVICING

NON-COMBUSTIBLE

FLOOR

Flue location

Center Rear

Flue size

Front Rear Sides Top Flue

Model

Diam.

mm in. mm in. mm in. mm in. mm in. mm in. mm in.

JW6 F307 508 20 X
JW6 F507 559 22 X

JW F657 660 26 X 406 16

JW6 F307V 508 20 X 457 18

152 6

610 24

51 2 51 2

Clearance

457 18 229 9

JW6 317RF 610 24 X

152 6 152 6 356 14 457 18JW6 517RF 711 28 X

JW717 813 32 X

178 7

Figure 1 Installation Clearances

152 6

– 8 –