Giant LIGHT DUTY COMMERCIAL POWER VENT GAS-FIRED WATER... User manual

IMPORTANT
READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING THE INSTALLATION. PROPER
INSTALLATION WILL PROVIDE SAFE AND EFFICIENT SERVICE, AND AVOID NEEDLESS EXPENSE NOT
COVERED BY THE WARRANTY. READ THE PRODUCT WARRANTY CONTAINED IN THIS MANUAL AND
REMEMBER TO FILL OUT AND RETURN TO THE MANUFACTURER ALL RELEVANT WARRANTY
CARDS AND CERTIFICATES. SHOULD YOU HAVE ANY QUESTIONS, PLEASE CONTACT YOUR LOCAL
DEALER OR REFER TO THE GETTING SERVICE FOR YOUR WATER HEATER SECTION OF THIS
MANUAL. SAVE THIS MANUAL FOR FUTURE REFERENCES.
LIGHT DUTY COMMERCIAL POWER VENT GAS-FIRED WATER HEATERS
OWNER’S MANUAL
INSTALLATION AND OPERATING INSTRUCTIONS
If the information in these instructions is not
followed exactly, a fire or explosion may
result causing property damage, personal
injury, or death.
DO NOT store or use gasoline or other
flammable vapours and liquids in the vicinity of
this or any other appliance.
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.
•From a neighbour’s phone, immediately
call your gas supplier. Follow the gas
supplier’s instructions.
•Ifyoucannotreachyourgassupplier,callthe
fire department.
Installation and service must be performed by
a qualified installer, service agency, or the gas
supplier.
WARNING
AVERTISSEMENT
DANGER
WARNING
AVERTISSEMENT
DANGER
For your records, write the model and serial number here:
Model # ________________________________
Serial # ________________________________
This water heater IS NOT design certified for
installation in a manufactured (mobile) home or
for installation outdoors.
54000017
© 2012 Giant Factories Inc. Printed in Canada GI-IM006En-0312
ISO 9001
ENREGISTRÉ
ISO 9001
REGISTRED

2
TABLE OF CONTENTS
Safety Information ......................... 2
Installation Instructions .................... 3
Location ................................ 3
Minimum Clearances .................... 3
Combustion and Ventilation Air Supply .... 4
Requirements for Unconfined Spaces ..... 4
Requirements for Confined Spaces ....... 4
Louvers and Grilles ...................... 5
Corrosive Atmospheres .................. 6
Venting ................................. 6
Through-the-Wall Venting Installation ..... 8
Through-the-Roof Venting Installation ..... 8
Condensation in the Venting System ...... 8
Water Piping ............................ 8
Temperature & Pressure-Relief Valve ..... 8
Pressure Build-up in a Water System .... 10
Filling the Water Heater ................. 10
Gas Connections ....................... 10
Installation Instructions for Water Heaters
Approved for Combination Space
Heating and Potable Water Heating .... 11
Wiring ................................. 12
Installation Checklist .................... 13
Operating Instructions .................... 14
Lighting the Water Heater ............... 14
Lighting Instructions ..................... 14
Water Temperature Regulation .......... 15
Out of Fuel ............................. 16
General Maintenance ...................... 16
Housekeeping .......................... 16
Condensation .......................... 16
Burner Ignitor Assembly ................. 16
Water Heater Tank ...................... 16
Temperature and Pressure-Relief Valve... 16
Venting System Inspection............... 17
Anodes................................. 17
Draining the Water Heater ............... 17
Vacation................................ 17
Getting Service for your Water Heater .... 18
Replacement Parts......................... 19
Troubleshooting Guide .................... 20
Warranty .................................. 23
SAFETY INFORMATION
Your safety and the safety of others is extremely important during the installation, operation,
and servicing of this water heater. Many safety-related messages have been provided in this
manual and on your water heater. Always read and obey all safety messages. These mes-
sages will point out the potential hazard, tell you how to reduce the risk of injury, and tell you
what will happen if the instructions are not followed.
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”.
Serious injury or death can occur if you do not follow
the instructions immediately.
Serious injury or death can occur if you do not follow
the instructions.
WARNING
DANGER
WARNING
DANGER
WARNING
DANGER
DO NOT use this water heater if any part has been under water. Immediately call a
qualified service technician to inspect the water heater and to replace any part of the
control system and any gas control which has been under water. Failure to follow this
instruction can result in property damage, personal injury, or death.

Location
This water heater should be located close enough to the
outside wall so that it is within the venting requirements
listed in these installation instructions and as close as
possible to the main use of hot water. This location
must not be subject to freezing temperatures. The
water heater should be positioned, so that there is
easy access to the burner, gas control valve, and
drain valve. It must be located close to a suitable
free-flowing floor drain. Where a floor drain is not
adjacent to the water heater, a suitable drain pan
must be installed under the water heater (see Figure
10). This drain pan should be at least four (4) inches
(10.2 cm) larger than the diameter of the water heater,
and at least one (1) inch (2.5 cm) deep, providing
access to the drain valve. This pan must not restrict
the flow of ventilation and combustion air. This pan
must be piped to a suitable drain to prevent damage
to property in the event of a water leak from the pip-
ing, the relief valve, or the water heater.
Sooner or later, all water heaters leak. The
manufacturer, based on national building codes,
has given the necessary instructions to prevent
damage to the building. Under no circumstances
is the manufacturer to be held liable for any water
damage, in connection with this water heater.
This water heater is approved for installation on
either a combustible or non-combustible floor.
However, should this water heater be installed directly
on carpeting, the carpeting must be protected by a
wood or metal panel beneath the water heater. This
panel must extend at least three (3) inches (7.6 cm)
beyond the width and depth of the water heater.
Should the water heater be installed in an alcove or
closet, the entire floor area must be covered by the
panel.
Minimum Clearances
The minimum clearances from combustible material
for this water heater are: Two (2) inches (5.1 cm)
from the sides and rear, four (4) inches (10.2 cm)
from the front, and eighteen (18) inches (45.7 cm)
from the top (see Figure 1).
3
INSTALLATION INSTRUCTIONS
IMPORTANT
These instructions have been written as a guide for the proper installation and operation of your water heater, and
the manufacturer of this water heater will not accept any liability where these instructions have not been followed.
However, for your safety and to avoid damage caused by improper installation, this water heater must be
installed by a Certified Licensed Professional, and meet all local codes or, in the absence of local codes, CAN/
CSA B149.1, Natural Gas and Propane Gas Installation Code, in Canada, and/or the National Fuel Gas Code,
ANSI Z223.1/NFPA 54, in the United States.
Before proceeding with the installation instructions:
1) Inspect the water heater and its component parts for possible damage. DO NOT install or attempt to
repair any damaged component parts. If you detect any damage, contact the dealer where the water
heater was purchased or the manufacturer listed on the warranty card.
2) Verify that the type of gas being supplied corresponds to that which is marked on the rating plate and
gas control valve of the water heater.
Vapours from flammable
liquids will explode and
catch fire causing death
or severe burns.
Do not use or store flammable
products, such as gasoline,
solvents or adhesives in the
same room or area near the
water heater.
Keep flammable products:
1. far away from heater,
2. in approved containers,
3. tightly closed, and
4. out of children's reach.
DANGER
!
Flammable Vapours
FLAMMABLES
Water heater has a main
burner and pilot flame.
The pilot flame:
1. is on all the time, and
2. will ignite flammable
vapours.
Vapours:
1. cannot be seen,
2. are heavier than air,
3. go a long way on the floor,
and
4. can be carried from other
rooms to the pilot flame by
air currents.
Installation:
Do not install the water heater
where flammable products will
be stored or used unless the
main burner and pilot flames
are at least 18" above the
floor. This will reduce, but not
eliminate, the risk of vapours
being ignited by the main
burner or pilot flame.
Read and follow the water heater warnings and instructions.
If owners manual is missing, contact the retailer or manufacturer.
!

Combustion and Ventilation Air Supply
In order for the water heater to operate properly, it
must be supplied with an uninterrupted flow of clean
combustion and ventilation air. The area around the
water heater must always be kept clear and the com-
bustion air intake holes at the bottom of the water
heater must never be blocked. An inadequate supply
of air to the water heater will produce a bright yellow
burner flame causing sooting in the combustion cham-
ber, on the burner and in the flue tube. This can result
in damage to the water heater and serious bodily inju-
ry, if not corrected.
Combustion and ventilation air requirements are
determined by where the water heater is to be located.
Water heaters are installed in either open (uncon-
fined) spaces or smaller (confined) spaces, such as
closets or small rooms.
Requirements for Unconfined Spaces
An unconfined space is an area with at least
fifty (50)
ft3/1,000 BTU (4.8 m3/kW) of the total input rating for
all gas appliances installed in that space. Water
heaters installed in unconfined spaces do not usually
require outdoor air to function properly. However, in
buildings with tight construction (heavy insulation,
vapour barriers, weather stripping, etc.) and particu-
larly in modern buildings, additional fresh air may
need to be provided. For instructions on obtaining
additional air supply, see the requirements below for
confined spaces.
Requirements for Confined Spaces
A confined space is an area where the volume is less
than
fifty (50) ft3/1,000 BTU (4.8 m3/kW) of the total
input rating for all gas appliances installed in that
space. Water heaters installed in confined spaces
require additional air. This can be provided in two
ways:
In Canada (refer to CAN/CSA B149.1)
1) All Air From Inside the Building (see Figure 2):
The confined space shall be provided with
one opening of one (1) in2/1,000 BTU (22.0 cm2/kW)
com municating directly with one or more
rooms of sufficient volume, so that the combined
volume of all spaces meets the criteria for an
unconfined space for all the appliances installed
in that confined space.
2) All Air From Outdoors: (see Figure 3):
An air-supply shall be provided with one opening that
communicates directly with the outdoors by means
of a duct. This duct shall be sized according to CAN/
CSA B149.1 and terminate within one (1) foot above
and within two (2) feet horizontally from the burner
level of the appliance having the largest input.
In U.S.A. (refer to ANSI Z223.1/NFPA 54)
1) All Air From Inside the Building (see Figure 4):
The confined space shall be provided with two
permanent openings communicating directly with
one or more rooms of sufficient volume, so that the
combined volume of all spaces meets the
criteria for an unconfined space. The total input
rating of all gas appliances installed in the
combined space shall be considered in making
this determination.
4
INSTALLATION INSTRUCTIONS
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct 1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 2
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct
1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 3
2''
min.
2''
min.
4''
min.
18''
min.
2''
min.
Figure 1

Each opening shall have a minimum free area of
one (1) in2/1,000 BTU (22.0 cm2/kW) of the total
input rating of all gas appliances in the confined
space, but not less than one hundred (100) square
inches (645 cm2). One opening shall commence within
six (6) inches (15.2 cm) of the top and one within six (6)
inches (15.2 cm) of the bottom of the enclosure.
2) All Air From Outdoors:
The confined space shall be provided with two
permanent openings, one commencing within six (6)
inches (15.2 cm) of the top and one commencing
within six (6) inches (15.2 cm) from the bottom of the
enclosure. The openings shall communicate directly
or by ducts, with the outdoors or spaces (crawl or
attic) that freely communicate with the outdoors.
A) When communicating directly with the outdoors,
each opening shall have a minimum free area of
one (1) in2/4,000 BTU (5.5 cm2/kW) of the total input
rating of all gas appliances in the enclosure (see
Figure 5).
B) When communicating with the outdoors through
vertical ducts, each opening shall have a minimum
free area of one (1) in2/4,000 BTU (5.5 cm2/kW) of
the total input rating of all gas appliances in the
enclosure (see Figure 6).
C) When communicating with the outdoors through
horizontal ducts, each opening shall have a minimum
free area of one (1) in2/2,000 BTU (11.0 cm2/kW) of
the total input rating of all gas appliances in the
enclosure (see Figure 7).
When ducts are used, they shall be of the same
cross-sectional area as the free area of the openings
to which they connect. The minimum short side
dimension of rectangular air ducts shall not be less
than three (3) inches (7.62 cm).
Louvers and Grilles
In calculating free area for ventilation and combustion
air supply openings, consideration must be given to
the blocking effect of louvers, grilles, or screens pro-
tecting the openings. Screens must not be smaller
5
INSTALLATION INSTRUCTIONS
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct 1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 7
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct
1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 6
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h
Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct 1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 5
Confined space
Confined space
Permanent
opening
--------------
1 in2/1,000
BTU/h
(min. : 100 in2)
Outlet air to attic
1 in
2
/4,000 BTU/h
Vent
to outdoors
Install above
insulation
Inlet air from the
crawl space
1 in
2
/4,000 BTU/h Open foundation vent
Install above
insulation
Vent
to outdoors
Outlet air to attic
1 in
2
/4,000 BTU/h
Confined
space Inlet air duct
Inlet air duct 1 in
2
/4,000 BTU/h
12'' max.
Inlet
Outlet
Outdoor air duct
1 in
2
/2,000 BTU/h
1 in
2
/2,000 BTU/h
Confined
space
Alternate
air inlet
Confined
space
Confined
space
18''
24''
Espace restreint
18''
24''
Entrée d'air
alternative
1 po
2
/2 000 BTU/h
1 po
2
/2 000 BTU/h
Conduite d'air extérieur
Sortie
Entrée
12'' max.
Conduite d'entrée d'air
Conduite
d'entrée d'air 1 po
2
/4 000 BTU/h
Évent de
fondation
1 po
2
/4 000
BTU/h
Entrée d'air du
sous-sol
Espace
restreint
Installez
au-dessus
de l'isolation
Installez
au-dessus
de l'isolation
Évent menant
à l'extérieur
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h
Ouverture
permanente
--------------
1 po
2
/1 000
BTU/h
1 po
2
1 000
BTU/h
(min. : 100 po
2
)
Espace restreint
Espace
restreint
Évent menant
à l'extérieur
Espace
restreint
Sortie d'air
au grenier
1 po
2
/4 000 BTU/h Espace
restreint
Figure 3 Figure 4 Figure 5 Figure 6 Figure 7Figure 2
Permanent
opening
--------------
1 square inch/
1,000 BTU/h
Ouverture
permanente
--------------
Figure 4