GSW JWF307, JW717, JW327, JW727, JW517 User Manual

GSW WATER HEATING

599 Hill Street West
Fergus, ON, Canada N1M 2X1

OIL FIRED WATER HEATER

INSTALLATION AND OPERATING INSTRUCTIONS

Read and understand these instructions thoroughly before attempting

any installation or service.

TABLE OF CONTENTS

I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

II) Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

III) Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Air Requirements . . . . . . . . . . . . . . . . . . . . . . . .6

Vent and Exhaust Connections . . . . . . . . . . . . . .7

Oil Supply Connections . . . . . . . . . . . . . . . . . . . .9

Water Supply Connections . . . . . . . . . . . . . . . . .9

Electrical Supply Connections . . . . . . . . . . . . . .10

IV) Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

V) Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

VI) Combination Heating . . . . . . . . . . . . . . . . . . . . . .16

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

PLEASE RETAIN THESE INSTRUCTIONS IN A
SAFE LOCATION FOR FUTURE REFERENCE

WARNING:

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 Oil-Burner
Technician or the oil supplier.

FOR YOUR SAFETY

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

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

WARNING:

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

GSW Water Heating is a division of GSW Water Products Inc.

JWF307 - JW317 - JW327
JWF507 - JW517 - JW527

JWF307V - JW717 - JW727

JWF657

This water heater is protected by a five (5) year warranty against
leaks plus a one (1) year warranty on parts.
Record key data here for future reference and prompt service:

Installed By / Purchased From:

Installation Date:

Model Number

Technical Support Line: 1-888-479-8324

INSTALLATION RECORD

Location of Electrical Switch
or Circuit Protector:

Serial Number

PART NO. 61512 REV. F (05-03)

Your safety and the safety of others is very important.

We have provided many important safety messages in this manual and on your appliance.
Always read and obey all safety messages.

This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word
“DANGER” or “WARNING”.

DANGER

You can be killed or seriously injured if you don’t immediately follow
instructions.

WARNING

You can be killed or seriously injured if you don’t follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the
chance of injury, and tell you what can happen if the instructions are not followed.

I) INTRODUCTION

Thank you for purchasing this water heater. Properly
installed and maintained, it will provide years of trouble free
service. This manual gives instructions for the proper instal­lation, safe operation and maintenance of this water heater.
It is your responsibility to ensure that your water heater is
properly installed and cared for.

John Wood Oil Fired Water Heaters are designed to supply
domestic hot water for normal residential demands. Any
deviation from this could affect your warranty.

Important Consumer Notice

The warranty on this water heater is in effect only when the
water heater is installed and operated in accordance with
these instructions. The manufacturer of this water heater will
not assume any liability for any property damage or person­al injury resulting from failure to comply with these instruc­tions.
Protect your warranty: Regularly service your water heater
as directed in the “Maintenance” section of this manual.

Installation Code Requirements

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

“Installation Code for Oil-Burning Equipment (CSA
B139-04)” and
“Canadian Electrical Code Part 1 (C22.1)” (in Canada)

available from:

Canadian Standards Association,
5060 Spectrum Way,
Mississauga, Ontario, Canada
L4W 5N6

or

“Standard for the Installation of Oil-Burning Equipment
(NFPA 31)” and
“National Electrical Code (NFPA 70)” (in USA) available

from:
American National Standards Institute,
25 West 43rd Street,
New York, NY 10036

Important: Installation and service of an oil fired water
heater and burner must be performed by a qualified Oil­Burner Technician to comply with local and provincial or
state 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 specific to your
area.

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, on finished flooring or carpeted surfaces. GSW
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.

– 2 –

II) SAFETY

Relief Valve Requirements

For protection against excessive pressure and/or tempera­tures, an ASME approved Temperature and Pressure (T&P)
Relief Valve must be installed in the opening provided and
labeled near the hot water outlet. Pressure rating of the
valve must not exceed the working pressure shown on the
rating plate of the water heater. The discharge capacity of
the T&P valve must be equal to or greater than the input
capacity of the water heater. The valve shall be self closing.

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.

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, crank case oil or an oil
containing gasoline.

· Do not tamper with unit or controls.

· Do not leave paper or rags around the
burner or heater.

· Do not experiment with the burner.

III) INSTALLATION

Location

NOTICE: Before installing this water heater, consideration

and planning must be given to the following details:

• Routing and support of the vent piping.

• How and where to obtain combustion and ventilation air

supply; See “Air Requirement

• Access to oil supply, See “Oil Supply Connections”.

• Position of water supply, floor drain and placement of

water piping for hot and cold water; See “Water Supply
Connections”.

• Connection to the electrical service. See “Electrical
Supply Connections”.

The water heater must be installed on a non-combustible
floor, as close to the chimney as practical and close to the
water piping. The unit should be installed in an area not sub­ject to freezing temperatures. It should be located so that all
controls and drains are easily accessible (at least 610mm
(24 in.) clearance in front of the water heater). Check the
area around the installation location. Remove any com­bustible materials, gasoline and other flammable liquids.
Failure to keep area clear and free of such materials and
vapors can result in substantial property damage, severe
bodily injury or death.

The heaters for which this manual has been written have
been approved with the minimum clearances to com­bustibles as listed in Figure 1.

s”.

Unpacking and Inspection

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.

Move the water heater to the location of installation before
removing the exterior packaging. Remove exterior packag­ing and place installation components aside. Inspect all
parts for damage prior to installation and start-up.
Completely read and understand 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.
Important: Do not remove any permanent instructions,
labels, or the date label from the outside of the water heater
or on the inside of panels. After installation, dispose of pack­aging material in the proper manner.

– 3 –

COMBUSTIBLE CEILING

Center Rear

mm in. mm in. mm in. mm in. mm in. mm in. mm in.
JWF307 508 20 X 152 6 610 24 51 2 51 2 457 18 229 9
JWF507 559 22 X 152 6 610 24 51 2 51 2 457 18 229 9
JWF657 660 26 X 152 6 610 24 51 2 51 2 406 16 152 6

JWF307V 508 20 X 152 6 610 24 51 2 51 2 457 18 152 6

JW317 610 24 X 152 6 610 24 152 6 152 6 356 14 457 18
JW327 610 24 X X 152 6 610 24 152 6 152 6 356 14 457 18
JW517 711 28 X 178 7 610 24 152 6 152 6 356 14 457 18
JW527 711 28 X X 178 7 610 24 152 6 152 6 356 14 457 18
JW717 813 32 X 178 7 610 24 152 6 152 6 356 14 457 18
JW727 813 32 X X 178 7 610 24 152 6 152 6 356 14 457 18

Top

Clearance

Flue

Diam.

Flue size

Front

Rear

Model

Flue location

Sides

NOTE: JWF307V requires additional
“Through-the-wall Vent Kit” available
in 3 lengths: 5’ (63320), 10’ (63321)
or 20’ (63322). Refer to additional
“Installation Instructions for Through­the-wall Venting Components",
63391, that is supplied with the
JWF307V.

FLUE

SEE TABLE

FLUE

SEE TABLE

FLUE SIZES

SEE TABLE

TOP

SEE TABLE

457mm

(18 in.)

MIN.

DRAFT

REGULATOR

610mm (24 in.) MIN.

FOR SERVICING

NON-COMBUSTIBLE FLOOR

Figure 1 ROUGH-IN DIMENSIONS

– 4 –

JWF307 JWF507 JWF657 JWF307V

mm 508 559 660 508

in. 20 22 26 20

mm 229 229 254 229

in. 9 9 10 9

mm 457 457 524 457

in. 18 18 20 5/8 18

mm 699 660 775 699

in. 27 1/2 26 30 1/2 27 1/2

mm 1286 1486 1661 1286

in. 50 5/8 58 1/2 65 3/8 50 5/8

mm 1326 1534 1692 1326

in. 52 3/16 60 3/8 66 5/8 52 3/16

mm 1122 1308 1511 1122

in. 44 3/16 51 1/2 59 1/2 44 3/16

mm 1314 1499 1753 1314

in. 51 3/4 59 69 51 3/4

mm 150 150 150 150

in. 6 6 6 6

H

Diam.

B

C

D

A

Model

E

F

G

H

JW317/JW327 JW517/JW527 JW717/JW727

mm 610 711 813

in. 24 28 32

mm 229 222 229

in. 9 8 3/4 9

mm 508 508 495

in. 20 20 19 1/2

mm 1264 1299 1359

in. 49 3/4 51 1/8 53 1/2

mm 1492 1499 1565

in. 58 3/4 59 61 5/8

mm 1575 1386 1486

in. 62 54 9/16 58 1/2

mm 593 584 826

in. 23 1/3 23 32 1/2

mm 1241 1372 1486

in. 48 7/8 54 58 1/2

mm 150 178 178

in. 6 7 7

C

H

D

E

F

G

Model

Diam.

A

B

H

G

F

B

A

E

E

D

D

C

C

G

F

B

A

Figure 2 INSTALLATION DIMENSIONS

(CENTER FLUE MODELS)

Figure 3 INSTALLATION DIMENSIONS

(CENTER/REAR FLUE MODELS)

– 5 –

VENT

FILL CAP

SERVICE
SWITCH

LEVEL
GAUGE

AQUASTAT

DRAFT

REGULATOR
BLOCKED VENT
SAFETY SWITCH

RISE 20mm/m
(1/4 in./ft.)

T&P VALVE

STORAGE

Figure 4 INSTALLATION DIAGRAM

Air Requirements

An adequate supply of combustion and ventilation air is
required to:

• Ensure proper combustion.

• Reduce risk of property damage, severe bodily injury or
death from possible flue gas leakage and carbon
monoxide emissions.

Do not install an exhaust fan in the same room as the water
heater.
Satisfactory combustion cannot be sustained in an area that
is not provided with fresh air. Fresh air contains oxygen that
is necessary for proper combustion. If the water heater is
installed in a confined space, sufficient fresh air must be
drawn in from outside of the enclosure.

NOTE: Lack of adequate fresh air supply may cause a
poor flame.

Air Supply

CAUTION

IF AN ALL-HOUSE VENTILATION FAN IS USED, A
SEPARATE OUTSIDE AIR DUCT MUST BE USED AND
DUCTED TO THE FURNACE ROOM AND/OR ROOM
WHERE THE WATER HEATER IS LOCATED.

In Canada:

If the water heater is installed in a house built to the require­ments of the “National Building Code of Canada, 1985”,
or a subsequent edition, the space shall be provided with a
air inlets as outlined below, or have a mechanical air-supply
system of sufficient equivalent capacity. If a mechanical air­supply system is used, it shall be interlocked to the appli­ance or equipment.
NOTE: In unconfined spaces in buildings of conventional
frame, brick, or stone construction built prior to the require­ments of the “National Building Code of Canada, 1985”,
and not subsequently significantly air-tightened, infiltration is
normally adequate to provide air for combustion and some
ventilation; however, there may be notable exceptions.
Houses built in accordance with the “National Building
Code of Canada, 1985” (or subsequent edition), with exten-

OIL

TANK

OPERATING
INSTRUCTIONS

CUT OFF VALVE

OIL FILTER

OIL
BURNER

sive exterior stucco coating, or with a sealed vapour barrier
or other similar air sealing technique, will often be sufficient­ly airtight so that there is not sufficient air for both combus­tion and venting the products of combustion of an oil-fired
appliance, or for replacing the air vented by other exhaust
devices within the house.

Outdoor Combustion & Ventilation Air
(Unconfined space)

If the water heater is installed in an unconfined space in a
building having insufficient infiltration, additional air for com­bustion and ventilation shall be obtained from outdoors or
from spaces freely communicating with the outdoors. Under
these conditions, permanent opening(s) shall be provided so
that the total air received through these openings will be at
least as much as would be admitted by openings having a

total free area of 4.5 cm2/kWh (1 in2/5000 Btu/h) of the total
input rating of all oil-fired appliances.

Outdoor Combustion & Ventilation Air
(Confined space)

A heater installed in a confined space that obtains all of its
air for combustion and ventilation from outside the building
shall be provided with two permanent openings, one near
the top of the enclosure and another near the bottom. Each
opening shall communicate directly or by means of ducts
with the outdoors or to such spaces (such as a crawl space)
that freely communicate with the outdoors, and shall be
sized in accordance with “Air Duct Sizing”.

Outdoor Combustion Air & Indoor Ventilation
Air (Confined space)

An appliance located in a confined space that obtains its
combustion air from outdoors and ventilation air from within
the conditioned space of the building shall be provided with
two permanent openings for ventilation. One located near
the top of the enclosure and another near the bottom. Each
opening shall have a free area of not less than 19.5

cm2/kWh (1 in2/1000 Btu/h) of the total input rating of all

– 6 –