John Wood Direct Vent Models No Longer in Production User Manual
GSW WATER HEATING
599 Hill Street West
Fergus, ON, Canada N1M 2X1
DIRECT VENT GAS FIRED WATER HEATER
INSTALLATION AND OPERATING INSTRUCTIONS
Read these instructions thoroughly before starting
TABLE OF CONTENTS
I) Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
II) Installation & Location . . . . . . . . . . . . . . . . . . .2-3
III) Vent Connections . . . . . . . . . . . . . . . . . . . . . .4-6
IV) Gas Connections . . . . . . . . . . . . . . . . . . . . . . . .6
V) Water Pipe Connections . . . . . . . . . . . . . . . . . . .6
VI) Temperature & Pressure . . . . . . . . . . . . . . . . . . .7
VII) Lighting & Operating Instructions . . . . . . . . . .8-10
VIII) Service And Maintenance . . . . . . . . . . . . . . .11-12
IX) Combo Heating . . . . . . . . . . . . . . . . . . . . . . . . .12
X) Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PLEASE RETAIN THESE INSTRUCTIONS IN A
SAFE LOCATION FOR FUTURE REFERENCE
FOR YOUR SAFETY
• 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 installer, service agency or the gas supplier.
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
installer, service agency, or the gas
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.
WHAT TO DO IF YOU SMELL GAS?
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your building.
• Immediately call your gas supplier from
a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier,
call the fire department.
GSW Water Heating is a division of GSW Water Products Inc.
PART NO. 71061 REV. A (04-09)
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.
The warranty on this water heater is applicable only when
the water heater is installed and operated in accordance
with these instructions. The manufacturer of this water
heater will not be liable for any injury or property damage
resulting from failure to comply with these instructions.
Protect your warranty: Regularly maintain your water
heater as detailed in the service and maintenance section of this manual.
WARNING
This water heater must be installed strictly in
accordance with the detailed instructions
enclosed and local building codes. It must be
installed with a proper pressure relief valve
which may release water in operation. It is also
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 water is directed to an
adequate drain in such a way that it cannot
damage the building, furniture, carpeting or
other property subject to water damage. GSW
CANNOT BE HELD RESPONSIBLE for damage caused by water from the water heater,
pressure relief valve, or related fittings where
adequate provision to drain such water has not
been made. Closets without drains and carpeted areas are examples of unsuitable locations
for any water heater.
will not result in damage to the area adjacent to the water
heater or to the lower floors of the structure. When such
locations cannot be provided, it is recommended that a
suitable drain pan be installed under the heater. Such
pans should be a maximum of 38mm (1-1/2 in.) deep and
have a minimum length and width of at least 50mm (2 in.)
greater than the diameter of the water heater and should
be piped to an adequate drain.
Under no circumstances is the manufacturer to be held
liable for any water damage in connection with this water
heater.
CAUTION: When this water heater is installed directly on
carpeting, carpeting must be protected by a metal or
wood panel beneath the appliance extending beyond the
full width and depth of the appliance by at least 76mm (3
in.) in any direction, or if the appliance is installed in an
alcove or closet, the entire floor must be covered by the
panel. The panel must be strong enough to carry the
weight of the heater when full of water. Failure to heed
this warning may result in a fire hazard.
Minimum clearances between the heater and combustible/non combustible materials are 25mm (1 in.) at
the sides and rear; 508mm (20 in.) from the top of water
heater and 25mm (1 in.) around the vent pipe. A minimum
of 915mm (3 ft.) of clearance is required at the front (control) side of the heater for service.
For a closet installation, the door at burner side should be
openable and a minimum of 102mm (4 in.) clearance is
needed. Water heater is certified for installation on a
combustible floor (see Figure 1).
ALCOVE INSTALLATION
(TOP VIEW)
25mm (1 in.)
25mm (1 in.)
II) INSTALLATION
This heater must be installed by a qualified, licensed gas
fitter and according to CSA B149 Natural Gas and
Propane Installation Code or ANSI Z223.1 National Fuel
Gas Code and/or local codes. If in doubt, consult your
local utility.
LOCATION
Generally, the location selected should be as close to the
wall as practical and as centralized with the piping system as possible. Heater should be located in an area not
subject to freezing temperatures.
The water heater should be located so that the controls
and drain are easily accessible. The heater should be
located in an area where leakage of tank or connections
- 2 -
CLOSET INSTALLATION
(TOP VIEW)
25mm (1 in.)
CLOSET DOOR
25mm (1 in.)
102mm (4 in.)
Figure 1
SEAL TIGHTLY
COLD WATER INLET
Specially For Direct Vent Water Heater:
Make certain to observe the vent location limitations
complying with the CSA B149 Natural Gas and Propane
Installation Code or ANSI Z223.1 National Fuel Gas
Code and/or local codes. There is some important information shown in Figure 3.
UPPER AIR
INLET BOX
HOT WATER OUTLET
REAR AIR TUBE
TEMPERATURE & PRESSURE
GAS CONTROL
UNION - GROUND
RELIEF VALVE
GAS SUPPLY MANUAL
SHUT-OFF VALVE
JOINT TYPE
LOWER AIR
INLET BOX
152mm
(6 in.)
SEDIMENT TRAP
DRAIN PAN
FLOOR DRAIN
Figure 2A - Installation Components.
WATER SUPPLY
TO HOME
EXPANSION TANK
OPTION 2
Vent Terminal must be located at
least 305mm (12 in.) from
Windows, Doors, or any other
Opening through which flue
gases could enter the building.
Vent terminal must
be located at least
915mm (36 in.)
above any Forced Air
457mm (18 in.)
Min.
305mm (12 in.) Min.
(18 in.) from any overhang or building corner
or other irregularity.
Vent Terminal must be located at least 457mm
above grade. Higher in
Areas of Heavy Snowfall
305mm
(12 in.)
Min.
Within 3m (10 ft.)
Inlet into the building
within 3m (10 ft.) of
the Vent Terminal
915mm
(36 in.)
Min.
Any Forced Air Inlet
into the building
Figure 3 - Vent Location Limitations
For a second or more direct vent unit, the distance
between vent terminals must have a minimum of 305mm
(12 in.).
INSPECT SHIPMENT –– There may be hidden damage
caused by transit. Check to be certain all parts of the
venting system, as shown in Figures 3A through 3M, are
present. Inspect the upper and lower air inlet boxes, rear
air tube and all parts of the venting system (see Figure
2A).
PRESSURE
RELIEF VALVE
OPTION 1
WATER METER
WITH BACKFLOW
PREVENTER
OVERFLOW
FLOOR DRAIN
WATER SUPPLY
TO METER
Figure 2B - Installation Options.
Figure 2B shows the location of a pressure relief and/or
expansion tank if a check valve or pressure reducing
valve is in the cold water supply to the house.
Use OPTION 1 or 2 whichever is more convenient. If
pressure relief valve is used, select one with a setting
172 kPa (25 psi) below the valve rating at tank.
CAUTION
If there are any damaged parts, DO NOT install this water
heater. Report any shortage to your distributor and damage to your carrier.
Note: The four fasteners that are required to secure the
vent terminal to the exterior wall are not provided. These
should be screw type (not nails) chosen for the type of
construction and obtained locally.
CAUTION
Cut edges of corrugated (flex) pipe are extremely sharp.
Wear gloves when handling.
- 3 -
III) VENT CONNECTIONS
After the location for the vent terminal has been selected
as outlined in Figure 3, use the following illustrations for
installation:
178mm (7 in.)
DIAMETER
MINIMUM
(SEE TEXT)
BOTTOM OF HEATER
Figure 3A - Locating Clearance Hole For Vent.
Cut a clearance hole, approximately 178mm (7 in.) in
diameter, through the exterior wall for the vent assembly.
The minimum height should not be less than 1.72m (68 in.)
for Models 40BF and 50BF and not less than 1.93m (76
in.) for Model 50TBF, as measured from the hole center to
bottom of water heater. The maximum height recommended is 2.28m (90 in.) or in compliance with Figure 3M.
* Where the wall is combustible and the wall thickness is
over 356mm (14 in.), 25mm (1 in.) clearance to combustible materials around the terminal pipe is needed. The
first 356mm (14 in.) is zero clearance.
SEALANT
Figure 3D - Securing Vent Termination Assembly To
The Exterior Wall.
Introduce the 152mm (6 in.) pipe through the clearance
hole from exterior wall then secure the vent terminal to
the exterior wall with 4 screw anchors appropriate for the
type of wall construction. Caulk the junction of the vent
terminal base plate and the exterior wall with exterior type
silicone sealant.
SPRING
102mm
(4 in.)
76mm
(3 in.)
MAX. 2.28m
(90 in.)
102mm
(4 in.)
WALL
Figure 3B - Moving Water Heater To Its Final Installed
Location.
Move the water heater to its final installed location. Make
certain clearances from combustible material are
observed. The maximum distance from center of water
heater to outside wall must not be more than 2.28m (90
in.).
SPRING
CLAMP
REDUCER
H
Figure 3E - Pull The 80mm (3-1/8 in.) And 152mm (6
in.) Corrugated Pipe Towards The Water Heater
Individually.
1. Pull the 80mm (3-1/8 in.) corrugated pipe towards the
water heater and leave some length over the water
heater’s center for bending.
2. Pull the 152mm (6 in.) corrugated pipe toward the
water heater and leave it 25mm (1 in.) shorter than
80mm (3-1/8 in.) pipe.
3. Make sure there are two springs evenly spaced at the
bend in the pipe.
4. Use metal hangers to keep vent pipe level or with a
slope upward from the heater to terminal.
Figure 3C - Vent Assembly.
The vent pipe and terminal are assembled by the manufacturer as shown in Figure 3C. There are springs fastened inside the corrugated pipe. When the vent pipes
are pulled to a required length, the distances between the
springs will still be equally spaced.
Figure 3F
Bend the 80mm (3-1/8 in.) and 152mm (6 in.) corrugated
pipe all together toward the water heater’s flue connection.
- 4 -
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