Bradford White | POWERED DIRECT VENT SERIES GAS-FIRED COMMERCIAL WATER HEATER | Instruction manual | Bradford White POWERED DIRECT VENT SERIES GAS-FIRED COMMERCIAL WATER HEATER Instruction manual

POWERED DIRECT VENT GAS WATER HEATER
A Spanish language version of these instructions is available by contacting
the company listed on the rating plate.
La version espanola de estas instrucciones se puede obtener al escribirle
a la fabrica cuyo nombre aparece en la placa de especificaciones.
INSTALLATION AND OPERATING
INSTRUCTION MANUAL
WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or death.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors 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.
 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.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
For your family’s comfort, safety and convenience we
recommend water heaters to be installed and serviced by a
plumbing professional.
238-42956-00E REV 03/07
CONGRATULATIONS!
You have just purchased one of the finest water heaters
on the market today!
This installation, operation and instruction manual will
explain in detail the installation and maintenance of your
new Powered Direct Vent Series Gas-Fired Water Heater.
We strongly recommend that you contact a plumbing
professional for the installation of this water heater.
We require that you carefully read this manual, as well as
the enclosed warranty, and refer to it when questions
arise. If you have any specific questions concerning
your warranty, please consult the plumbing professional
from whom your water heater was purchased. For your
records we recommend that you write the model, serial
number and installation date of your water heater in the
maintenance section in the back of this manual.
This manual should be kept with the water heater.
2
TABLE OF CONTENTS
GENERAL INFORMATION ............................................................
page
4
INSTALLATION. ............................................................................
Locating The Water Heater ....................................................
Minimum Clearances ..............................................................
Venting ....................................................................................
Water Connections .................................................................
Gas Connections ....................................................................
Electrical Connections ...........................................................
Wiring Diagram ......................................................................
GENERAL OPERATION................................................................
Lighting and Shutdown Instructions ....................................
Thermostat Adjustment .........................................................
Burner Flame Check ...............................................................
5
5
8
8
22
25
26
27
28
29
30
31
MAINTENANCE .............................................................................
32
PARTS LIST AND DRAWING .......................................................
35
BLOWER PARTS LIST AND DRAWING ......................................
36
INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND
SPACE HEATING ..........................................................................
37
VENT PIPE PREPARATION AND JOINING .................................
38
NOTES ...........................................................................................
40
3
GENERAL INFORMATION
This gas-fired water heater’s design is certified by CSA International under the
American National Standard Z21.10.1 - (as indicated on the rating plate) and
CSA 4.1-M - (as indicated on the rating plate).
This water heater must be installed in accordance with local codes or, in the
absence of local codes, the National Fuel Gas Code, ANSI Z223.1-Latest
Edition) and/or in Canada CAN/CGA B149 Installation Codes (Latest Editions).
The warranty for this water heater is in effect only when the water heater is
installed, adjusted, and operated in accordance with these Installation and
Operating Instructions. The manufacturer will not be held liable for any damage
resulting from alteration and/or failure to comply with these instructions.
This water heater is not design certified for installation in a mobile home. Such
an installation may create a hazardous condition and will nullify the warranty.
CAUTION
Incorrect operation of this appliance may create a hazard to life and
property and will nullify the warranty.
Do not use this appliance if any part has been submerged in water. You should
contact a qualified service technician to inspect the appliance and to replace
any part of the control system including the combination gas control which has
been submerged in water.
DANGER
Do not store or use gasoline or other flammable, combustible, or
corrosive vapors and liquids in the vicinity of this or any other
appliance.
IMPORTANT
Before proceeding, please inspect the water heater and its components for
possible damage. DO NOT install any damaged components. If damage is
evident then please contact the supplier where the water heater was
purchased or the manufacturer listed on the rating plate for replacement
parts.
Make sure that you check the rating plate and combination gas control on the
water heater to be certain that the type of gas being supplied corresponds with
the marking on the rating plate and combination gas control.
4
General Information continued-
A sacrificial anode is used to extend tank life. The removal of this anode, for
any reason, will nullify the warranty. In areas where water is unusually active,
an odor may occur at the hot water faucet due to a reaction between the
sacrificial anode and the impurities in the water. If this should happen, an
alternative anode may be purchased from the supplier that installed this water
heater. This will minimize the odor while protecting the tank. Additionally, the
water heater should be flushed with appropriate dissolvers to eliminate any
bacteria.
INSTALLATION
Locating The Water Heater
WARNING
Water heaters are heat producing appliances. To avoid damage or injury, do
not store materials against the water heater or vent-air intake system. Use
proper care to avoid unnecessary contact (especially by children) with the
water heater and vent-air intake components. UNDER NO CIRCUMSTANCES
SHALL FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT
THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER
HEATER, VENT-AIR INTAKE SYSTEM OR IN ANY LOCATION FROM
WHICH FUMES COULD REACH THE WATER HEATER OR VENT-AIR
INTAKE SYSTEM.
This water heater MUST be installed indoors out of the wind and weather.
DO NOT install the water heater in any location where gasoline or
flammable vapors are likely to be present.
CAUTION
The National Fuel Gas Code (ANSI Z233.1-or latest edition) and CAN/CGA
(B149.1-or latest edition), expressly prohibits the installation of a water
heater in a garage, unless the unit is installed so that the burner and
ignition devices are at least eighteen (18) inches (46 cm) above floor level
and protected to avoid damage by a moving vehicle.
The location of this water heater is of the utmost importance. Before installing
this water heater, read the installation section of these instructions. After
reading these installation and operating instructions, select a location for the
water heater where the floor is level and is easily accessible to gas and water
supply lines. DO NOT locate the water heater where water lines could be
subjected to freezing temperatures. Make sure the cold water pipes are
not located directly above the gas control so that condensate during
humid weather does not drip on the controls.
5
Installation (Locating The Water Heater) continued-
Water heater corrosion and component failure can be caused by the heating
and breakdown of airborne chemical vapors. Examples of some typical
compounds that are potentially corrosive are: spray can propellants, cleaning
solvents, refrigerator and air conditioning refrigerants, swimming pool
chemicals, calcium and sodium chloride, waxes and process chemicals. These
materials are corrosive at very low concentration levels with little or no odor to
reveal their presence. NOTE: DAMAGE TO THE WATER HEATER CAUSED
BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY THE
WARRANTY. DO NOT OPERATE THE WATER HEATER IF EXPOSURE
HAS OR WILL OCCUR. DO NOT STORE ANY POTENTIALLY CORROSIVE
COMPOUNDS IN THE VICINITY OF THE WATER HEATER.
WARNING
Liquefied petroleum gases/propane gas are heavier than air and
will remain at floor level if there is a leak. Basements, crawl
spaces, closets and areas below ground level will serve as
pockets for accumulation of leaking gas. Before lighting, smell
all around the appliance area for gas. Be sure to smell next to
the floor.
IF YOU SMELL GAS:
 Do not try to light any appliance.
 Do not touch any electric switch; do not use any telephone in
your building.
 Immediately call your gas supplier from a neighbor’s
telephone. Follow the gas supplier’s instructions.
 If you cannot reach your gas supplier, call the fire
department.
DO NOT OPERATE APPLIANCE UNTIL THE LEAKAGE IS
CORRECTED!
6
Installation (Locating The Water Heater) continued-
WARNING
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT
CERTAIN OF THE FOLLOWING:
 Liquefied petroleum gases/propane gas and natural gas have an
odorant added by the gas supplier that aids in the detection of the
gas.
 Most people recognize this odor as a “sulfur” or “rotten egg” smell.
 Other conditions, such as “odorant fade” can cause the odorant to
diminish in intensity, or ”fade”, and not be as readily detectable.
 If you have a diminished sense of smell, or are in any way unsure of
the presence of gas, immediately contact your gas supplier from a
neighbor’s telephone.
 Gas detectors are available. Contact your gas supplier, or plumbing
professional, for more information.
The water heater must be located close enough to the outside wall to keep the
venting distance within the maximum distance described in the installation
instructions. Read the venting section in this installation instruction manual
before locating the water heater.
This water heater must be located in an area where leakage of the tank or
water line connections and the combination temperature and pressure relief
valve will not result in damage to the area adjacent to the water heater or to
lower floors of the structure. When such locations cannot be avoided, a suitable
drain pan adequately piped for proper drainage, must be installed under the
water heater. The pan must not restrict combustion airflow. The drain pan
must have a minimum length and width of at least 4 in. (10.2 cm) greater than
the diameter of the water heater and must not restrict proper combustion air
flow to the water heater. The drain pan, as described above, can be purchased
from your plumbing professional. The drain pan must be piped to an adequate
drain. The piping must be at least 3/4 inch (1.9 cm) in diameter and pitched for
proper drainage.
It is recommended that a minimum clearance of four (4) inches (10.2 cm) be
provided on the side of the water heater for servicing and maintenance of the
combination temperature and pressure relief valve.
Note: For California installation this water heater must be braced,
anchored, or strapped to avoid falling or moving during an earthquake.
See instructions for correct installation procedures. Instructions may be
obtained from California Office of the State Architect, 400 P Street,
Sacramento, CA 95814.
7
Installation (Minimum Clearances) continued-
Minimum Clearances
WARNING
Failure to adhere to these installation and operating instructions may
create a hazard to life and property and will nullify the warranty.
This installation must allow access to the front of the water heater and
adequate clearance must be provided for servicing and operating this water
heater. The water heater may be installed on either a combustible or noncombustible floor. If the water heater is to be installed directly on carpeting, it
must be installed on top of a metal or wood panel extending beyond the full
width and depth of the appliance by at least three (3) inches (7.6 cm) in any
direction or, if the appliance is to be installed in an alcove or closet, the entire
floor must be covered by the panel. The minimum clearances to combustibles
for this water heater is: zero (0) inches (0 cm) from the sides and rear, five (5)
inches (12.7 cm) from the front of the jacket, zero (0) inches (0 cm) from the
vent connector and fifteen (15) inches (38.1 cm) from the jacket top.
Venting
Figure 1
Direct Vent Terminal Clearances
A=
E=
Clearance above grade, veranda,
porch, deck or balcony
Clearance to widow or door that may
be opened
Clearance to permanently closed
widow
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal
Clearance to unventilated soffit
F=
Clearance to outside corner
G=
Clearance to inside corner
B=
C=
D=
Canadian
Installations1
US Installations2
12 inches (30
cm)
12 inches (30
cm)
*b
12 inches
(30 cm)
12 inches (30 cm)
12 inches (30
cm) *a
12 inches (30
cm) *a
12 inches (30
cm) *a
*b
12 inches (30
cm) *a
*b
*b
*b
8
*b
Venting continued-
H=
Clearance to each side of center line
extended above meter/regulator
assembly
I=
Clearance to service regulator vent
outlet or oil tank vent
Clearance to non-mechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
Clearance to a mechanical air supply
inlet
J=
K=
L=
M=
Clearance above paved sidewalk or
paved driveway located on public
property
Clearance under a veranda, porch,
deck, or balcony
Canadian
Installations1
US Installations2
3 feet (91 cm)
within a height
15 feet (4.6 m)
above the
meter/regulator
assembly
36 inches
(91 cm)
12 inches
(30 cm)
*b
6 feet
(1.83 m)
7 feet
(2.13 m)†
12 inches (30
cm) ‡
*b
12 inches
(30 cm)
3 feet (91 cm) above if
within 10 feet
horizontally
*b
*b
1
In accordance with the current CAN/CGA-B149 Installation Codes.
In accordance with the current ANSI Z223.1-(Latest edition)/NFPA 54 National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two singlefamily dwellings and serves both dwellings.
‡ Permitted only if a veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the
floor.
*a) A minimum clearance value determined by testing in accordance with section 2.20.
*b) “Clearance in accordance with local installation codes and the requirements of the gas supplier”.
2
The vent system must terminate so that proper clearances are maintained as
cited in local codes or the latest edition of the National Fuel Gas Code, ANSI
Z223.1.73.4e and 7.8a, b as follows:
1. Do not terminate near soffit vents or crawl space or other area where
condensate or vapor could create a nuisance or hazard or cause
property damage.
2. Do not terminate the exhaust vent terminal where condensate or
vapor could cause damage or could be detrimental to the operation of
regulators, relief valves, or other equipment.
3. Do not terminate the exhaust vent terminal over public area or
walkways where condensate or vapor can cause nuisance or hazard.
4. The vent shall terminate a minimum of 12 inches above expected
snowfall level to prevent blockage of vent termination.
Vent pipes serving power vented appliances are classified by building codes as
“vent connectors”. Required clearances from combustible materials must be
provided in accordance with information in this manual under LOCATION OF
WATER HEATER and CLEARANCES, and with National Fuel Gas Code and
local codes.
9
Venting continued-
Venting Installation Instructions For Supplied Intake Venting:
1.
Refer to Figure 2, “Vent Assembly Illustration” to install intake venting
as described below.
2. Insert one end of the Vertical Pipe into Metal Boot on the lower
backside of the water heater.
3. Slide the Support Bracket over the Vertical Pipe, but do not fasten to the
Jacket Head.
4. Position the Intake Tee on top of the Vertical Pipe so that the short
straight section of the tee faces the Blower Intake Collar, and the curve
of the tee faces upward. Proper orientation of the curved section of
the tee is critical. Be sure it is facing upward. Refer to “This End
Up” label on Intake Tee.
5. Slide the Rubber Intake Elbow over the Blower Intake Collar and over
the short straight section of the Intake Tee.
6. Using a level to ensure that the Vertical Pipe is straight up and down,
secure the Vertical Pipe to the Jacket Head using the Support Bracket
and three (3) self-drilling screws provided. NOTE: Correct vertical
positioning of the Vertical Pipe is Important.
7. After securing the Vertical Pipe to the Jacket Head with the Support
Bracket, tighten the clamps on the Rubber Intake Elbow.
8. Using the RTV sealant provided, place a bead of RTV around the
Vertical Pipe at the Metal Boot location, and at the Intake Tee location.
Smooth out the RTV to provide a seal at both locations.
9. Two 90° end terminal elbows are supplied. These must be installed at
the extreme ends of the intake and exhaust venting outside the building.
The end terminal with the external screen must be installed on the
intake vent as shown in Figure 8.
10. Proceed as necessary to complete the venting installation as described
in the venting section of this manual.
10
Venting continued-
Figure 2
Vent Assembly Illustration
11
Venting continued-
NOTICE
For installations in Canada, field supplied plastic vent piping must comply
with CAN/CGA B149.1 (latest edition) and be certified to ULC S636. The
supplied vent connector and vent termination are certified as part of the
water heater.
Venting System Condensation
Condensate formation does not occur in all installations of power vented
heaters, but should be protected against on installations where condensation
can form in the venting system.
Formation of condensation in the venting system of Power Vented water
heaters is dependent upon installation conditions including, but not limited to:
ambient temperature and humidity of installation location;
ambient temperature and humidity of venting space;
vent distance and slope;
and product usage.
In order to effectively control condensate from adversely affecting the
mechanical components of the water heater several methods may be
employed:
1. For horizontal installations the vent pipe can be installed with a
downward slope (not less than 1/8" nor greater than ½” per foot
maximum) and away from the blower motor.
2. In order to prevent condensate from draining back into the blower
(vertical or horizontal runs), a fitting and drain hose is available as a
condensate trap kit (see Table 1 for service part numbers). The tubing
provided is to drain any accumulated condensate away from the water
heater and to a suitable drain. The kit comes complete with instructions
for proper installation of the fitting. If a Bradford White drain kit is not
purchased, the drain hose material must be either flexible PVC or
silicone hose with inside diameters as specified below. Hose clamps
that will ensure a leak proof connection at the drain hose must also be
used. Hose clips will be required to create a 6” diameter loop in the
drain hose routing below the jacket head.
50, 65 and 75 gallon powered direct vent models use 3/8” I.D. flexible
PVC or silicone hose.
Table 1
Model
3” (7.6 cm) Blower Outlet (exhaust)
12
Service Part
239-43870-00
Venting continued-
2. In order to prevent condensate from draining back into the blower
(vertical or horizontal runs), a drain tee and condensate trap can be
installed in the horizontal vent as close as practical to the blower vent
connection (see Figure 3). The condensate disposal tube should be
installed to drain any accumulated condensate away from the water
heater and to a suitable drain.
Figure 3
13
Venting continued-
This water heater is a power direct vented appliance and is designed to intake
and exhaust the products of combustion through 3” (7.6 cm) or 4” (10.2 cm)
diameter Schedule 40 PVC pipe to the outdoors. This water heater may intake
and exhaust either through the wall or vertically through the roof. Use a 3” (7.6
cm) to 4” (10.2 cm) reducer to connect to the intake and outlet when using 4”
(10.2 cm) PVC. Table 2 lists the maximum intake and exhaust lengths for this
water heater using 3” (7.6 cm) PVC. If possible, locate the water heater so that
the venting length and number of elbows are kept to the minimum distance
necessary to reach the outside. If the installation requires venting lengths that
exceed the lengths listed for 3” (7.6 cm) PVC in Table 2, then use 4” (10.2 cm)
PVC for the vent connector. Table 3 lists the venting distances allowed with 4”
(10.2 cm) diameter PVC pipe. When venting with 4” (10.2 cm) PVC, use a 4”
(10.2 cm) to 3” (7.6 cm) reducer to exit through the building wall with 3” (7.6
cm) PVC. Use the 3” (7.6 cm) vent terminal supplied with the water heater to
terminate on the outside of the building. If the length of the 3” (7.6 cm) PVC
needed to go through the wall is greater than 14” (35.5 cm), use 4” (10.2 cm)
PVC to go through the wall and reduce to 3” (7.6 cm) PVC immediately after
exiting the outside wall. Refer to the venting illustrations on the following
pages. Make sure the vent pipe terminal elbow fittings are at least 1” (2.5 cm)
away from the edge of the wall.
To calculate total equivalent feet
Add up the total number of 90° elbows on the intake and the exhaust, and multiply
by 5 feet (1.5 m) (each 90° elbow is equivalent to 5 feet (1.5 m) of straight pipe). To
this number add the total number of feet of straight pipe on the intake and the
exhaust. This sum (total of all 90° elbows at 5 feet (1.5 m) each, plus total number
of feet of straight pipe) must not exceed 80 feet
(24.4 m). All elbows must be included in the calculation except those on the
extreme ends of the intake and exhaust. 45° elbows may also be used. When
using 45° elbows, take the total number of 45° elbows on the intake and exhaust
and multiply by 2 1/2 feet (.76 m) (each 45° elbow is equivalent to 2 1/2 feet (.76 m)
of straight pipe).
Total equivalent feet=
(# of 90° elbows x 5) + (# of 45° elbows x 2 1/2) + (total feet of straight pipe)
Total equivalent meters=
(# of 90° elbows x 1.5) + (# of 45° elbows x .76) + (total meters of straight pipe)
14
Venting continued-
EXAMPLE: The exhaust has two 90° elbows and the intake has four 90° elbows.
The total feet of straight pipe on the exhaust is 15 ft. (4.6 m) and the total feet of
straight pipe on the intake is 20 ft (6.1 m).
Figure 4
six 90° elbows x 5 ft. each = 30 ft
Total straight pipe = 11 ft+3 ft+1 ft+3 ft+9 ft+6 ft+2 ft= 35 ft
Total equivalent feet = 65 ft
Total
six 90° elbows x 1.5 m each = 9.0m
straight pipe=3.4m+.91m+.31m+.91m+2.7m+1.8m+.61m = 10.6m
Total equivalent meters =
19.6m
IMPORTANT
For 3” (7.6 cm) vent piping, the total equivalent feet of venting (intake
plus exhaust) must not exceed 80 feet (24.4 m) and the total equivalent
feet of venting (intake or exhaust) must not exceed 40 feet (12.2 m).
The total equivalent feet of intake must be within 20 feet (6.1 m) of the
total equivalent feet of exhaust. See Table 2 for common 3” (7.6 cm)
vent lengths.
For 4” (10.2 cm) vent piping, the total equivalent feet of venting (intake
plus exhaust) must not exceed 150 feet (45.7 m) and the total equivalent
feet of venting (intake or exhaust) must not exceed 75 feet (22.9 m). The
total equivalent feet of intake must be within 20 feet (6.1 m) of the total
equivalent feet of exhaust. See Table 3 for common 4” (10.1 cm) vent
lengths.
15
Venting continued-
TABLE 2 - VENT CONNECTOR LENGTHS
FOR 3” (7.6 cm) DIAMETER PVC
Total # of 90° elbows
(Intake + Exhaust)
2
3
4
5
6
7
8
Maximum # of feet of straight pipe
(Intake + Exhaust)
70 (21.3 m)
65 (19.8 m)
60 (18.3 m)
55 (16.8 m)
50 (15.2 m)
45 (13.7 m)
40 (12.2 m)
TABLE 3 - VENT CONNECTOR LENGTHS
FOR 4” (10.1 cm) DIAMETER PVC
Total # of 90° elbows
(Intake + Exhaust)
2
3
4
5
6
7
8
Maximum # of feet of straight pipe
(Intake + Exhaust)
140 (42.7 m)
135 (41.1 m)
130 (39.6 m)
125 (38.1 m)
120 (36.6 m)
115 (35.1 m)
110 (33.5 m)
NOTE: When using 4” (10.1 cm) PVC, use a 4” (10.1 cm) to 3” (7.6 cm) reducer on
the intake of the “Tee” as shown in Figure 5. When exiting the building wall, use
another 4” (10.1 cm) to 3” (7.6 cm) reducer, and exit the wall with 3” (7.6 cm) PVC.
If the length of 3” (7.6 cm) PVC needed to go the through wall is greater then 14”
(35.5 cm), use 4” (10.1 cm) PVC to go through the wall and reduce to 3” (7.6 cm)
PVC immediately after exiting the outside wall. Terminate the venting with the 3”
(7.6 cm) vent terminals supplied, as shown in Figure 8.
Figure 5
16
Venting continued-
IMPORTANT
All of the Venting connections must be leak checked with a soap and
water solution upon initial start up of the water heater. Any leaks must
be repaired before continuing operation of the water heater.
NOTE: ABS or CPVC pipes may be substituted for PVC pipe. Do not mix
ABS and PVC pipe in the same installation.
THROUGH THE WALL VENTING:
Cut a 3 1/2 in. (8.9 cm) diameter hole in the wall at the point where the vent
connector is going to pass through the wall. Use the proper cement to secure
the 90° vent terminal provided with the water heater to the vent connector. The
distance between the edge of the 90° vent terminal and the exterior wall (see
Figure 6) must be at least 1 in. (2.5 cm). The exhaust and intake terminals
must not be less than 16 in. (40.6 cm) apart (see Figure 8). The exhaust
terminal must not be mounted below the intake terminal. Use the proper
cement and assembly procedures to secure the vent connector joints between
the terminal and the blower outlet. Provide support brackets for every 3 feet
(.91 m) of horizontal vent.
Figure 6
17
Venting continued-
THROUGH THE WALL VENTING WITH LOW GROUND CLEARANCE:
When venting cannot exit through the wall at a height greater than or equal to
12” (30.5 cm) above the ground or anticipated snow level, the installation must
be modified as shown below (see Figure 7). Refer to Table 4 for maximum
venting lengths using 3” (7.6 cm) PVC or Table 5 for maximum lengths using 4”
(10.1 cm) PVC.
Figure 7
18
Venting continued-
TABLE 4
3” (7.6 cm) PVC VENT CONNECTOR LENGTHS FROM INSIDE WALL
FOR LOW GROUND CLEARANCE INSTALLATIONS
Terminating
# of Elbows
(intake + exhaust)
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
2
3
4
5
6
7
8
Maximum # of Feet
of Straight Pipe
(intake + exhaust)
50 ft (15.2 m)
45 ft (13.7 m)
40 ft (12.2 m)
35 ft (10.7 m)
30 ft (9.1 m)
25 ft (7.6 m)
20 ft (6.1 m)
TABLE 5
4” (10.1 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR
LOW GROUND CLEARANCE INSTALLATIONS
Terminating (Reduce 4” to 3”)
(Reduce 10.1 cm to 7.6 cm)
#of Elbows
(intake + exhaust)
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
(2) 90 Elbows with (1) 90 Elbow
2
3
4
5
6
7
8
19
Maximum # of Feet
of Straight Pipe
(intake + exhaust)
120 ft (36.6 m)
115 ft (35.1 m)
110 ft (33.5 m)
105 ft (32.0 m)
100 ft (30.5 m)
95 ft (29.0 m)
90 ft (27.5 m)
Venting continued-
When venting through the wall, the exhaust terminal must exit the structure at a
minimum of 16” (40.6 cm) from either side, or any location above the intake
terminal. The exhaust terminal must not be located below the intake terminal
for any reason (See Figure 8).
Figure 8
THROUGH THE ROOF VENTING: (VERTICAL VENTING)
Cut the necessary holes through the roof and ceiling and install the vent
connector as shown in Figure 9. Make sure that the installation meets the local
codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or
CGA/CAN B149 Installation Code.
Figure 9
20
Venting continued-
HIGH ALTITUDE INSTALLATIONS FOR ELEVATIONS OVER 2,000
FEET (914.5 m) ABOVE SEA LEVEL
The capacity of the induced draft blower declines with increasing altitude due to
a reduction in the air density. In order to assure safe and reliable performance
of the water heater, the following guidelines must be followed. Refer to the
venting tables below for maximum distances for the altitudes in your location.
TABLE 6 - HIGH ALTITUDE LENGTHS
Altitude above
sea level
0-2,000 ft
(0-609 m)
over 2,00010,000 ft
(609-3048 m)
Maximum
venting length
reduction
from tables 2
&4
No reduction in
vent length
required
No reduction in
vent length
required
Maximum
venting length
reduction from
tables 3 & 5
Modifications to
water heater
No reduction in
vent length
required
No reduction in
vent length
required
None
21
Requires high
altitude kit. Call
the supplier or the
manufacturer
Water Connections
Note: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE
MAIN WATER SUPPLY VALVE.
After shutting off the main water supply, open a faucet to relieve the water line
pressure to prevent any water from leaking out of the pipes while making the
water connections to the water heater. After the pressure has been relieved,
close the faucet. The COLD water inlet and HOT water outlet are identified on
the top of the water heater. The fittings at the cold water inlet and hot water
outlet are dielectric waterway fittings with 3/4” (1.9 cm) NPT male thread. Make
the proper plumbing connections between the water heater and the plumbing
system to the house. Install a shut-off valve in the cold water supply line.
CAUTION
If sweat fittings are to be used DO NOT apply heat to the nipples on top of
the water heater. Sweat the tubing to the adapter before fitting the adapter
to the water connections. It is imperative that heat is not applied to the
nipples containing a plastic liner.
WARNING
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED 3/4” X 3/4”
TEMPERATURE AND PRESSURE RELIEF VALVE WILL RELEASE THE
MANUFACTURER FROM ANY CLAIM WHICH MIGHT RESULT FROM
EXCESSIVE TEMPERATURE AND PRESSURES.
If this water heater is installed in a closed water supply system, such as one
having a back-flow preventer in the cold water supply, provisions must be made
to control thermal expansion. DO NOT operate this water heater in a closed
system without provisions for controlling thermal expansion. Your water
supplier or local plumbing inspector should be contacted on how to control this
situation
After installation of the water lines, open the main water supply valve and fill the
water heater. While the water heater is filling, open several hot water faucets
to allow air to escape from the water system. When a steady stream of water
flows through the faucets, close them and check all water connections for
possible leaks. NEVER OPERATE THE WATER HEATER WITHOUT FIRST
BEING CERTAIN IT IS FILLED WITH WATER.
22
WARNING
For protection against excessive temperatures and pressure, install
temperature and pressure protective equipment required by local codes, but
not less than a combination temperature and pressure relief valve certified by
a nationally recognized testing laboratory that maintains periodic inspection of
production of listed equipment or materials as meeting the requirements of the
Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water
Supply Systems, ANS Z21.22 or the Standard CAN1-4.4. Temperature and
Pressure and the Standard CAN1-4.4, Temperature, Pressure, Temperature
and Pressure Relief Valves and Vacuum Relief Valves. The combination
temperature and pressure relief valve must be marked with a maximum set
pressure not to exceed the maximum working pressure of the water heater.
The combination temperature and pressure relief valve must also have an
hourly rated temperature steam BTU discharge capacity not less than the
hourly rating of the water heater.
Install the combination temperature and pressure relief valve into the opening
provided and marked for this purpose on the water heater.
Note: Some models may already be equipped or supplied with a combination
temperature and pressure relief valve. Verify that the combination temperature
and pressure relief valve complies with local codes. If the combination
temperature and pressure relief valve does not comply with local codes,
replace it with one that does. Follow the installation instructions above on this
page.
Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within six (6) inches (15.2 cm)
above, or any distance below the structural floor and cannot contact any live
electrical part. The discharge line is to be installed to allow for complete
drainage of both the combination temperature and pressure relief valve and
the discharge line. The discharge opening must not be subjected to blockage
or freezing. DO NOT thread, plug or cap the discharge line. It is
recommended that a minimum clearance of four (4) inches (10.2 cm) be
provided on the side of the water heater for servicing and maintenance of the
combination temperature and pressure relief valve.
Do not place a valve between the combination temperature and pressure relief
valve and the tank.
23
Water Connections continued-
WARNING
Hydrogen gas can be produced in an operating water heater that has
not had water drawn from the tank for a long period of time (generally
two weeks or more). Hydrogen gas is extremely flammable. To
prevent the possibility of injury under these conditions, we
recommend the hot water faucet to be open for several minutes at the
kitchen sink before you use any electrical appliance which is
connected to the hot water system. If hydrogen is present, there will
be an unusual sound such as air escaping through the pipes as hot
water begins to flow. Do not smoke or have open flame near the
faucet at the time it is open.
This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury. Certain
appliances such as dishwashers and automatic clothes washers may require
increased temperature water. By setting the thermostat on this water heater to
obtain the increased temperature water required by these appliances, you may
create the potential for scald injury. To protect against injury, you should install
an ASSE approved mixing valve in the water system. This valve will reduce
point of discharge temperature by mixing cold and hot water in branch supply
lines. Such valves are available from the manufacturer of this water heater or a
local plumbing supplier. Please consult with a plumbing professional.
24
Gas Connections
The gas supply lines must meet all requirements of the National Fuel Gas Code (ANSI
Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas Installation Code
(Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition).
The minimum permissible gas supply pressure for the purpose of input adjustment is
one (1.0) inch (0.25 kPa) water column above the operating manifold pressure. See the
rating plate and gas valve for the manifold pressure and gas type. The maximum
permissible gas supply pressure is fourteen (14.0) inches (3.5 kPa) water column for
natural gas and liquefied petroleum gases/propane gas.
1.
Connect this water heater only to the type of gas (Natural or Propane gas) as
shown on the rating plate. Use clean black iron pipe or equivalent material
approved by local codes and ordinances. (Dirt and scale from the pipe can enter
the gas valve and cause it to malfunction). The inlet gas line must have a
minimum length of three (3) inches (7.6 cm) drip leg (sediment trap) installed as
close to the water heater’s gas valve as possible. A ground joint union must be
installed as close to the water heater as possible in the gas supply line feeding
the water heater to permit servicing of the water heater. Compounds used on the
threaded joints of the gas piping must be resistant to the action of liquefied
petroleum gases/propane gas. DO NOT apply pipe dope to the gas valve inlet
and make certain that no pipe dope has become lodged in the inlet screen of the
gas valve. Extreme care must be taken to ensure no pipe dope enters the gas
valve. Avoid excessive torque when tightening the gas supply line to the gas
valve. Excessive torque may result in cracking of the gas valve housing and
could create a gas leak. The suggested maximum torque is 31.5 ft. lbs. (4.4 kgm).
WARNING
The manufacturer of this water heater will not be liable for any damage or injury
caused as a result of a cracked gas inlet as a result of excessive torque.
2.
This water heater and its gas connection must be leak tested before placing the
water heater in operation. Check for gas leaks with a soap and water solution and a
brush or a commercial leak detector fluid. NEVER USE A MATCH OR OPEN
FLAME FOR TESTING!
CAUTION
The water heater and individual shutoff valve must be disconnected from the gas
supply piping system during any pressure testing of the system at test pressures
in excess of 1/2 psi (3.5 kPa). The water heater must be isolated from the gas
supply piping system by closing its manual shutoff valve during any pressure
testing of the gas supply system at test pressures equal to or less than 1/2 psi (3.5
kPa). The supply line must be capped when not connected to the water heater.
3.
While checking for leaks care must be taken to prevent solution from
contacting the electrical connections at the control. If electrical connections at the
control become wet, they must be thoroughly dried before attempting to operate the
water heater.
25
Electrical Connections
All electrical wiring and connections must be in accordance with the National
Electric Code ANSI/NFPA No. 70 (latest edition), or the Canadian Electrical
Code C22.1 (latest edition) and any local codes which may apply. The water
heater must be electrically grounded.
If a flexible line cord and plug is permitted by local code, then provide a (3)
three wire grounding type receptacle within 6 feet (1.9 m) of the water heater
and use the flexible cord provided. Do not plug the line cord into a receptacle
that can have the power supply interrupted by a switch that is used to turn on
and off lights.
If wiring in conduit is required, remove the flexible line cord from the jacket and
install a 1/2" (1.3 cm) electrical conduit connector and connect a 110/120 volt
power source. Connect the hot, neutral, and ground leads of the electrical
supply to the corresponding locations that were connected to the flexible line
cord.
CAUTION
Turn off or disconnect the electrical power supply to the water heater before
servicing. Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation. Verify proper
operation after servicing.
26
Electrical Connections (Figure 10) continued-
Figure 10
27
GENERAL OPERATION
WARNING
Water heaters are heat producing appliances. To avoid damage or injury
there must be no materials stored against the water heater or vent-air
intake system, and proper care must be taken to avoid unnecessary contact
(especially by children) with the water heater and vent-air intake system.
UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS,
SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN
THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM
OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE
WATER HEATER OR VENT-AIR INTAKE SYSTEM.
TO FILL THE WATER HEATER
1. Close the water heater drain valve using a standard screwdriver.
2. Open the cold water supply shut-off valve.
3. Open several hot water faucets to allow air to escape from the system.
4. When a steady stream of water flows from the faucets, the water heater is
filled. Close the faucets and check for water leaks at the water heater drain
valve, combination temperature and pressure relief valve and the hot and
cold water connections.
TO DRAIN THE WATER HEATER
Should it become necessary to completely drain the water heater, make sure
you follow the steps below:
1. Shut off the gas supply to the water heater.
2. Turn off/disconnect all electric power to the water heater.
3. Close the cold water supply shut-off valve.
4. Open the drain valve on the water heater using a standard screwdriver.
The drain valve has threads on the end that will allow the connection of a
standard hose coupling.
5. Open a hot water faucet to allow air to enter the system.
To refill the water heater, refer to “To Fill the Water Heater.”
28
General Operation (Lighting and Shutdown Instructions) continued-
Lighting and Shutdown Instructions
29
Thermostat Adjustment
CAUTION
Before adjusting thermostat(s), turn off power supply to the water heater.
The thermostat dial is adjusted to approximately 120°F when shipped from the
factory. When adjusting the thermostat, it should be remembered that lower
temperature settings are more energy efficient. The thermostat cover, to the
right of the gas valve, must be removed when the thermostat is adjusted. To
adjust the thermostat turn the dial clockwise with a screwdriver until the
minimum acceptable temperature is set. It is suggested that the starting point
setting not exceed the 120°F (49°C) or “HOT” setting on the thermostat.
Figure 11
WARNING
Hotter water increases the risk of scald injury. Scalding may occur within five
(5) seconds at a temperature setting of 140°F (60°C). To protect against hot
water injury, install an ASSE approved mixing valve in the water system. This
valve will reduce point of discharge water temperatures by mixing cold and hot
water in branch water lines. A licensed plumbing professional or local
plumbing authority should be consulted.
Note: This water heater is equipped with an energy cut out device to prevent
overheating. Should overheating occur, turn off the electrical supply to the
water heater and contact a qualified service technician.
30
Burner Flame Check
Cast Iron Burner: At the time of installation and at periodic intervals (not more
than 6 months), a visual check of the main burner and pilot flames should be
made to determine if they are burning properly. For ideal operation, the gas
and air must be properly proportioned. The proper air-gas mixture is obtained
by adjusting the air shutter on the mixer face of the main burner (See Figure
12). To adjust for proper burning, loosen the air shutter nut (if provided), rotate
shutter to close the opening in the burner then slowly rotate the shutter until the
yellow tips disappear and the flame becomes blue. On 75 gallon models fired
on LPG or propane, adjust the air shutter as described above until the yellow
flame is minimized (note – the burner flame may contain a mixture of yellow
and blue). Tighten the air shutter nut (if provided). Too much air will cause the
flame to lift off the burner ports and create noisy operation. Too little air will
result in soot formation. The main burner flame should light smoothly from the
pilot.
Steel Burner: These models are equipped with self adjusting air mixture and
do not have an adjustable air shutter (See Figure 12). At periodic intervals a
visual check of the main burner and pilot flames should be made to determine if
they are burning properly. The main burner flame should light smoothly from
the pilot.
Figure 12
31
MAINTENANCE
WARNING
Water heaters are heat producing appliances. To avoid damage or injury
there must be no materials stored against the water heater or vent-air intake
system, and proper care must be taken to avoid unnecessary contact
(especially by children) with the water heater and vent-air intake system.
UNDER NO CIRCUMSTANCES SHALL FLAMMABLE MATERIALS,
SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN
THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM
OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE
WATER HEATER OR VENT-AIR INTAKE SYSTEM.
IMPORTANT
The water heater should be inspected at a minimum annually by a
qualified service technician for damaged components and/or joints
not sealed. DO NOT operate this water heater if any part is found
damaged or if any joint is found not sealed.
The following maintenance should be performed by a qualified service
technician at the minimum periodic intervals suggested below. In some
installations, the maintenance interval may be more frequent depending on the
amount of use and the operating conditions of the water heater. Regular
inspection and maintenance of the water heater and vent-air intake system will
help to insure safe and reliable operation.
1. Annually check the operation of the thermostat.
2. The flow of combustion and ventilation air MUST NOT be restricted. Clear
the combustion air openings of any dirt, dust, or other restrictions.
WARNING! The ventilation air system may be HOT.
3. At all times keep the water heater area clear and free from combustible
materials, gasoline and other flammable vapors and liquids.
4. Bi-annually conduct a visual check of the main and pilot burner flames to
determine that they are burning properly. See Burner Flame Check section
on page 31. If sooting or other burner anomalies are evident, shut down
the water heater by turning off the gas per the instructions listed in this
manual or as listed on the water heater.
32
Maintenance continued-
5. Annually remove the inner door and main burner assembly to clean orifices
and related parts of any dirt or other foreign material. Inspect the burner
ports for obstructions or debris and clean with a wire brush as needed.
Wire brush and/or vacuum clean the combustion chamber as needed to
remove scale deposits and debris. NOTE: It is imperative for proper
operation of the water heater that the inner door be replaced in the
original location.
WARNING
When lifting lever of the combination temperature and pressure relief
valve, hot water will be released under pressure. Be careful that any
released water does not result in bodily injury or property damage.
6. At least once a year, check the combination temperature and pressure
relief valve to insure that the valve has not become encrusted with lime.
Lift the lever at the top of the valve several times until the valve seats
properly without leaking and operates freely.
7. Monthly drain off a gallon of water to remove silt and sediment.
WARNING! THIS WATER MAY BE HOT.
8. If the combination temperature and pressure relief valve on the appliance
discharges periodically, this may be due to thermal expansion in a closed
water supply system. Contact the water supplier or local plumbing
inspector on how to correct this situation. Do not plug the combination
temperature and pressure relief valve outlet.
9. A combination sacrificial anode rod/hot water outlet nipple has been
installed to extend tank life. The anode rod should be inspected
periodically (every 2 years) and replaced when necessary to prolong tank
life. Water conditions in your area will influence the time interval for
inspection and replacement of the anode rod. Contact the plumbing
professional who installed the water heater or the manufacturer listed on
the rating plate for anode replacement information. The use of a water
softener may increase the speed of anode consumption. More frequent
inspection of the anode is needed when using softened (or phosphate
treated) water.
10. The induced draft blower has sealed motor bearings and does not require
adding oil.
11. The vent system must be inspected at least once a year to ensure against
leakage of exhaust products.
33
Maintenance (continued)-
CAUTION
FOR YOUR SAFETY. DO NOT ATTEMPT REPAIR OF COMBINATION
GAS CONTROL, BURNERS OR GAS PIPING. REFER REPAIRS TO A
QUALIFIED SERVICE TECHNICIAN.
Contact your supplier or plumbing professional for replacement parts or contact
the company at the address given on the rating plate of the water heater.
Provide the part name, model and serial numbers of the water heater when
ordering parts.
READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF
TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED.
Manufactured under one or more of the following U.S. Patents: 4,416,222;
4,628,184; 4,669,448; 4,672,919; 4,808,356; 4,829,983; 4,861,968;
RE.34,534; 4,904,428; 5,000,893; 5,023,031; 5,052,346; 5,081,696;
5,092,519; 5,115,767; 5,199,385; 5,277,171; B1 5,341,770; 5,372,185;
5,485,879; 5,574,822; 5,596,952; 5,660,165; 5,682,666; 5,943,984;
5,954,942; 5,954,492; 5,761,379; 5,988,117; 6,142,216 6,684,821. Other
U.S. and Foreign patents applications pending.
Current Canadian Patents: 1,272,914; 1,280,043; 1,289,832; 2,112,515;
2,045,862; 2,092,105; 2,108,186; 2,107,012.
Complete the following information and retain for future reference:
Model No:
Serial No:
Service Phone
Days:
Nights:
Address:
Supplier:
Supplier Phone No:
34
PARTS LIST DRAWING
PART NAME AND DESCRIPTION
1. Blower Assembly
2. Rubber Intake Elbow
3. Intake Tee (Supplied)
4. Vertical Pipe (Supplied)
5. Metal Intake Boot
6. Flue Baffle
7. Fiberglass Insulation
8. Foam Insulation
9. Honeywell Smartvalve
10. Drain Valve
11. Diptube – Nipple
12. Anode – Nipple
13. Thermostat (Behind Cover)
14. Thermostat Cover
15. T & P Relief Valve Opening
16. Gas Feedline
17. Air Shutter (Cast Iron Only)
18. Main Burner Orifice
19. Steel Burner
20. Cast Iron Burner
21. Pilot Assembly
35
BLOWER PARTS DRAWING
1.
2.
3.
4.
5.
6.
7.
8.
PART NAME AND DESCRIPTION
Exhaust Pressure Switch
ECO Switch
Intake Collar
Exhaust Connection
Junction Box
Transformer (Behind Junction Box Cover)
Six Pin Blower Connector
Intake Pressure Switch (Not Shown)
36
THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF:
GAS WATER HEATERS SUITABLE FOR WATER (POTABLE)
HEATING AND SPACE HEATING
1. All piping components connected to this water heater for space heating
applications must be suitable for use with potable water. In Massachusetts,
space heating piping length must not exceed 50 feet.
2. Toxic chemicals, such as those used for boiler treatment, must not be
introduced into potable water used for space heating.
3. This water heater must not be connected to an existing heating system or
component(s) previously used with a non-potable water heating appliance.
4. When the system requires water for space heating at temperatures higher
than required for other means, such as an ASSE approved mixing valve
must be installed to temper the water for those uses in order to reduce the
scald hazard potential.
Please refer to the illustration below for the suggested piping arrangement.
37
VENT PIPE PREPARATION AND JOINING
Most failures in PVC, CPVC or ABS systems result from improper preparation
and joining of pipe and fittings. The guidelines below must be followed when
installing the venting system. If you have any question about the application or
installation of the PVC, CPVC or ABS venting system, contact the
manufacturer, supplier, or your plumbing professional.
1) Specific cleaners, solvents, primers and cements are available for PVC,
CPVC and ABS pipe. Be sure these materials match the type of pipe to be
installed. Never use all-purpose cements, commercial glues and
adhesives or ABS cement to join PVC or CPVC pipe and fittings.
a) CLEANERS, SOLVENTS, PRIMERS AND CEMENTS ARE
FLAMMABLE. Do not store or use these materials near heat or
open flame, or in the vicinity of other appliances.
2) Use proper cutting, deburring and applicator tools to ensure proper
preparation and joining of pipe and fittings.
a) Cutting Tools
i) A square cut must be achieved with a miter box saw or pipe cutter
to ensure a proper mating with the female. If a pipe cutter is used,
the burr created at the outer edge of the pipe must be removed.
b) Deburring Tools
i) A file, knife or plastic deburring tool can be used to remove burrs.
Burrs must be removed from the inside and outside edges of the
pipe to ensure a proper seal.
c) Applicator Tools
i) A pure bristle paintbrush or roller may be used to apply cement.
Prompt application of the cement is important due its fast drying
properties.
3) Inspection, Cleaning, Priming and Cementing
a) Inspect the pipe inside and out for dirt, dust, moisture or grease etc.
Check pipe and fittings for splits or cracks and replace if necessary.
b) Clean pipe and fittings are imperative for proper joining. Following
cutting and deburring, wipe away any foreign material with a clean dry
rag. If wiping fails to thoroughly clean surfaces, chemical cleaning is
necessary.
c) Primer must be applied to the pipe surface and fitting socket with a
natural bristle brush. This serves to soften and prepare the PVC or
CPVC for cementing.
38
Vent Pipe Preparation and joining (continued)-
d) Cementing must be done quickly to avoid over-drying before joining.
i) Apply one coat to the outside end of the pipe at a width slightly
greater than the depth of the socket.
ii) Apply a coat around the inside of the fitting socket.
iii) Apply a second coat around the end of the pipe.
4) Joining
a) Joints should be made immediately after cement is applied.
b) After fully inserting pipe into fitting socket, give pipe about ¼ turn to
help spread cement evenly. Hold joint together for about 15 to 20
seconds.
c) Remove excess cement from around pipe and fitting with a clean rag.
d) Cement drying times may vary. Be sure to allow for the recommended
drying time before disturbing joints.
For more specific and detailed information about the above, contact the
manufacturer, supplier, or competent professional.
39
NOTES
40
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