Quietside QVM 9-090W1-NG User manual

FIRST YEAR
Limited Warranty for Condensing Gas Water Heater
(All Residential Commercial Water Heater)
(Includes Space Heating Domestic Water ‘Combo’ Heating Applications)
Quietside Corporation warrants that its combo water heater are free from
defects in materials and workmanship for one year from the date of
installation. If any parts are found to be defective in manufacture,
Quietside Corporation will provide replacement of such defective parts.
SECOND THROUGH THE TENTH YEAR
Limited Warranty for Primary Heat Exchangers
(Residential Water Heater Only)
(Space Heating Applications Only)
Quietside Corporation warrants that the copper tube (primary) heat
exchanger of its residential condensing gas model water heater is free
from defects in material and workmanship from the date of installation
for the second through the tenth year to the original purchaser only. If
during such time period, any part of the copper tube heat exchanger is
found to be defective, Quietside Corporation will provide replacement for
the original heat exchanger.
ELEVENTH YEAR AND BEYOND
Limited Warranty for Primary Heat Exchangers
(Residential Water Heater Only)
(Space Heating Applications Only)
Quietside Corporation warrants, to the original purchaser only, that the
copper tube (primary) heat exchanger of its residential condensing gas
model water heater is free from defects in material and workmanship for
the eleventh year and beyond from the date of installation. If during such
time period, any portion of the copper water tubing is found to be
defective, Quietside Corporation will provide replacement for the original
copper tube heat exchanger upon the payment of a proportionate charge
based on the time the water heater has been in service. The proportionate
charge will be equal to the appropriate percentage of the list price of such
copper tube heat exchanger at the time the warranty claim is made, and
will be determined as follows :
11th Year – 10%, 12th Year – 15%, 13th Year – 18%
144hYear – 20%, 15th Year – 25%, 16th Year – 30%
17th Year – 35%, 18th Year – 40%, 19th Year – 45%
20th Year – 50%, 21th Year – 55%, 22th Year – 60%
23th Year – 65%, 24th Year – 70%,
25th Year and beyond – 75%
＊NOTE : If the heat exchanger model involved is no longer
available due to product obsolescence or redesign, the value
used to establish the retail price will be the publish price as
shown in the Quietside repair parts booklet where the heat
exchanger last appeared or the current retail price of the then
nearest equivalent heat exchanger.
SPECIAL FIVE YEAR WARRANTY
Limited Warranty for Flat Plate Heat Exchangers
(Domestic Hot Water Heat Exchangers – Residential Use Only)
Quietside Corporation warrants that the stainless steel, flat plate heat
exchanger (used for the production of domestic hot water ) is free from
defects in material and workmanship for five years from the date of
installation. Any coagulation or blockage of the normal water flow
through the heat exchanger, due to trapped sediment, heavy calcification,
lime deposits minerals and or other waterborne buildup in the plate heat
exchanger, or corrosion due to chemical anti-freeze additive is not
considered defects in workmanship and therefore any malfunction or
damage to other parts or components resulting from these buildups in
the plate heat exchanger is not covered under the terms of this warranty.
This Warranty Does Not Cover :
1. Installations by other than qualified heating contractors.
2. Installations of equipment for other purposes than those intended by
the instructions supplied with this equipment.
3. Installations of equipment for purposes other than residential space
heating and domestic hot water production.
4. Any product which is improperly installed or moved from its original
place of installation.
5. Any product, which has been repaired or replaced with other than
Quietside factory parts.
6. Any product modified in any way, misused or damaged or which as
been used contrary to warrantor’s written instructions.
7. Any damage resulting from use of anti-freeze solutions added to the
heating water or combustion air drawn from interior spaces.
8. Any damage to the product caused by failure to maintain the unit properly,
improper voltage, improper gas pressure, improper water pressure, flood,
fire, lightning, or Acts of God.
9. Nicks, scratches or discoloration of decorative finishes.
10. Installation, plumbing , gas piping and wiring not integral to the
product.
11. This warranty does not covered and expenses related to the removal
or re-installation process. The homeowner will be responsible for the
cost of removing and re-installing the alleged defective part or its
replacement and all labor and material connected therewith, and
transportation to and from Quietside Corporation.
12. The warranty cannot be considered as a guarantee of workmanship
of an installer connected with the installation of the condensing water
heater, or as imposing a liability of any nature for unsatisfactory
performance as a result of faulty workmanship in the installation,
which liability is expressly disclaimed.
Exclusion of Incidental and Consequential Damages
Quietside Corporation will not pay in contract or in tort, consequential or
incidental damages under this warranty, both of which are specifically excluded.
This means we shall not be responsible for any loss, expense or damage caused
by any defect in the Water Heater, other than the water heater itself.
The maximum liability of Quietside Corporation in connection with this limited
warranty shall not in any case exceed price of the part claimed to be defective, or
price of the water heater if the entire water heater is claimed to be defective.
“Incidental” damages include expenses of inspection, obtaining substitute
goods, transportation, etc.
“Consequential” damages include injury to persons or property resulting
from a breach of warranty.
Owner’s Responsibilities
This Warranty is issued to the original purchaser only. This product must
be used and cared for in accordance with the instruction manual. You are
responsible for required periodic maintenance or service such as
lubrication, cleaning the strainer and cleaning the components. See your
instruction manual for details. You must be able to verify the installation
date of the product against which you make any warranty claim. The
original bill of sale, installer’s invoice or other similar document is
required to verify warranty. If you cannot show evidence of the actual
date of installation, warranty coverage will be considered to start on the
date the product is shipped from our distributor.
The attached warranty card must be filled out completely and returned to
Quietside Corporation. Failure to do so will prevent or delay our being
able to contact you (or the person residing at this address) in case of a
recall or important product safety alert.
Your warranty information will be held strictly confidential.
QVM 9 SERIES CONDENSING GAS WATER HEATER

WHAT TO DO IF YOU SMELL GAS !
WARNING ! If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
y Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
y Extinguish any open flame.
y Do not try to light any appliance.
y Do not touch any electrical switch; do not use any phone in
your building.
y Immediately call your gas supplier from a neighbor’s phone.
Follow the gas supplier’s instructions.
y If you cannot reach your gas supplier, call the fire
department or 911.
y Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER
AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.

1 QVM 9 Series
TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY.
PLEASE READ THOROUGHLY BEFORE INSTALLING
AND USING THIS APPLIANCE.
▣ Please read through this informative manual
and pay special attention to the following :
y Identifying the Components ----------------------------------- 2
y Safety Issues ---------------------------------------------- 3
y Advantages of QVM 9 Hydronic Heating System ---------------- 7
y Proper Use ---------------------------------------------- 10
y Installation ------------------------------------------------ 11
y Gas Piping Connections ------------------------------------- 16
y Installation of the Flue -------------------------------------- 18
y Draining Condensed Water----------------------------------- 21
y About the FR－5 Thermostat -------------------------------- 22
y Installation of the Thermostat -------------------------------- 23
y Using the Thermostat, FR－5 ------------------------------- 24
y Test Operation and Checks -------------------------------- 28
y Routine Maintenance ---------------------------------------- 31
y Brazed Plate Heat Exchanger－Service and Maintenance Tips ----------- 33
y Dimensional Drawing of the Unit ------------------------------ 34
y Troubleshooting－Error Codes --------------------------------- 35
y Wiring Diagram ------------------------------------------- 36
y Troubleshooting -------------------------------------------- 38
y Exploded Views ------------------------------------------- 39
y Parts List------------------------------------------------- 40
y Specifications---------------------------------------------- 42
CAUTION
for buying this QUIETSIDE Corporation
hydronic heating system. To use it correctly,
please read this manual carefully before installing and operating

QVM 9 Series 2
■ Model : QVM 9－090W1－NG
125W1－NG
150W1－NG
Identifying the Components

3 QVM 9 Series
FOR YOUR SAFETY READ BEFORE OPERATING
OPERATING INSTRUCTION
TO TURN OFF GAS TO APPLIANCE
Safety Issues
A. THIS APPLIANCE DOES NOT HAVE A PILOT. IT
IS EQUIPPED WITH AN IGNITION DEVICE
WHICH AUTOMATICALLY LIGHTS THE BURNER.
DO NOT TRY TO LIGHT THE BURNER B
Y
HAND. LIGHTING BY HAND COULD CAUSE
PERSONAL INJURY OR DEATH.
B. BEFORE LIGHTING : SMELL ALL AROUND
THE APPLIANCE AREA FOR GAS. BE SURE
TO SMELL NEXT TO THE FLOOR BECAUSE
SOME GAS IS HEAVIER THAN AIR.
WHAT TO DO IF YOU SMELL GAS
y DO NOT TRY TO LIGHT ANY APPLIANCE.
y DO NOT TOUCH ANY ELECTRIC SWITCH;
DO NOT USE ANY PHONE IN YOUR HOME.
y IMMEDIATELY CALL YOUR GAS SUPPLIER
FR O M A NEIGHBOR’S PHONE. FOLLOW THE GAS
SUPPLIER’S INSTRUCTIONS.
y IF YOU CANNOT REACH YOUR GAS SUPPLIER,
CALL THE FIRE DEPARTMENT OR 911.
1. STOP! READ THE SAFETY INFORMATION
ABOVE ON THIS LABEL.
2. SET THE SYSTEM CONTROLLER TO THE
LOWEST SETTING.
3. TURN OFF ALL ELECTRIC POWER TO
APPLIANCE.
4. THIS APPLIANCE IS EQUIPPED WITH AN
IGNITION DEVICE WHICH AUTOMATICALL
Y
LIGHTS THE BURNER. DO NOT TRY TO LIGHT
THE BURNER BY HAND.
5. TURN KNOB OF GAS VALVE TO “OFF” POSITION.
6. WAIT A FEW MINUTES TO CLEAR OUT AN
Y
GAS. THEN SMELL FOR GAS, INCLUDING
NEAR THE FLOOR. IF YOU DON’T SMELL GAS,
GO TO THE NEXT STEP.
7. TURN KNOB OF GAS VALVE TO “ON” POSITION.
8. TURN POWER SWITCH TO “ON” POSITION.
9. SET THE SYSTEM CONTROLLER TO DESIRED
SETTING.
10. IF THE APPLIANCE WILL NOT OPERATE, FOLLO
W
THE INSTRUCTIONS “TO TURN OFF GAS TO
THE APPLIANCE”AND CALL YOUR SERVICE
TECHNICIAN OR GAS SUPPLIER.
1. SET THE SYSTEM CONTROLLER TO THE LOWEST SETTING.
2. PRESS THE POWER SWITCH ON ROOM THERMOSTAT (IF SO EQUIPPED) TO “OFF” POSITION (LIGHT
TURNS OFF).
3. TURN KNOB ON GAS VALVE (CONNECTED TO THIS APPLIANCE) TO “OFF” POSITION.
C. DO NOT USE TOOLS TO PUSH IN OR TURN
THE GAS SHUT OFF VALVE. IF THE GAS
CONTROL VALVE WILL NOT PUSH IN OR TURN
BY HAND. DO NOT TRY TO REPAIR IT, CALL
A
QUALIFIED SERVICE TECHNICIAN. FORCE OR
ATTEMPTED REPAIR MAY RESULT IN A FIRE
OR EXPLOSION.
D. DO NOT USE THIS APPLIANCE IF ANY PART
HAS BEEN UNDER WATER. IMMEDIATEL
Y
CALL A QUALIFIED SERVICE TECHNICIAN TO
INSPECT THE APPLIANCE AND TO REPLACE
ANY PART OF THE CONTROL SYSTEM AND
ANY GAS CONTROL WHICH HAS BEEN UNDER
WATER.
E. DO NOT OPERATE APPLIANCE UNLESS UNIT
IS FILLED WITH WATER AND WATER LINES
ARE FULLY OPEN.

QVM 9 Series 4
1. Ignition Failure
If the ignition fails, the gas supply is automatically
cut off. An error code will appear as a flashing 2-
digit code on the room thermostat (model FR-5
only). The error codes are discussed in the
troubleshooting section of the installation manual.
2. Flame Detection
If the flame fails and/or the re-ignition attempt fails,
the gas supply is automatically cut off. An error code
will appear on the room thermostat(model FR-5 only).
Refer to troubleshooting guide to further information.
3. Power Interruption
When the power is restored after a power failure,
the water heater will automatically start and return to
normal operation, manual reset is not required.
4. Excessive Air Pressure
Occasionally an excessive gust of wind may be
forced into the flue pipe. The air-ratio control module
will detect these strong back-drafts. To prevent any
products of combustion from re-entering the building
through the open flue, the gas supply will be
automatically cut off. An error code will appear on
the room thermostat (model FR-5 only). Refer to
troubleshooting guide to further information.
5. Explosive Re-ignition Protection
Abrupt, noisy startups and backfires are prevented
by “
soft ignition” , a trademark of our air-ratio control
module.
6. Overheat Protection
Any overheating of the burners or heat exchanger
will automatically shut down the supply of gas to the
burners. An error code will appear on the room
thermostat(model FR-5 only). Refer to troubleshooting
guide to further information.
7. Low Water-Level Safety
The water level in the heat exchanger is continuously
monitored to prevent the water heater from operating if
there is no water or a restricted flow of water in the unit.
The water heater will be automatically shut down
and an error code will appear on the room thermostat
(model FR-5 only). Refer to troubleshooting guide to
further information.
8. Automatic Water Fill
Should the water level in the system fall too low, a
sensor will automatically activate the re-fill circuit.
9. Freeze Protection
During the heating season, a sensor inside the water
heater will automatically detect and initiate a safety
heating cycle to prevent internal equipment damage
from occurring should freezing temperatures exist.
Note ! － When there is no gas supply available,
the circulation pump will automatically start up to
guard the pipes from freezing.
10. Gas Pressure Control
To prevent damage from over pressure, each water
heater is protected from occasional surges in gas
pressure by a pressure regulator located in the gas valve.
11. Short-Circuit Protection
Any short-circuit occurring in the water heater’s
electrical circuit will immediately ‘blow’ the internal
glass fuse(s) and automatically cut off the gas supply.
12. Lightning Protection
Each water heater is specially grounded internally
and externally to protect against lightning strikes.
13. Carbon Monoxide Protection
The water heater are designed to maintain a
safe 1:1 air ratio and combustion rate. This
function is continuously monitored by the water
heater’s air-ratio control module.
14. Thermostat Control Failure
Should the thermostat fail to function properly,
as a safeguard, the water heater’s gas supply
will be automatically be shut down.
Safety Issues
Equipment Protection and Personal Safety

5 QVM 9 Series
Use only the gas type indicated on the
rating plate of the water heater which is
located at the bottom right side panel.
WARNING
Conversion of this appliance from natural gas to
propane CAN ONLY BE PERFORMED by a trained
technician using approved QUIETSIDE parts.
CAUTION
In winter season, the water heater should be kept
connected to an electrical supply, even when the
water heater is not used, to prevent freezing. POWER
SUPPLY IS 115V – 1PH – 60Hz. If the Check Lamp is
“LIT” during the operation, it means that the gas
supply has run out. Check the lamp frequently.
(For other troubleshooting, see page 35 and 38)
CAUTION
Do not use the water heater for other purposes than
heating and hot water use, such as clothes drying,
cooking, etc. Fire may occur.
WARNING
Do not touch the water heater with wet hands. Do
not pour water directly to the water heater for cleaning.
An electric shock may occur.
Use soapy water on the piping and connections to
check for any gas leakage.
Have a professional check the water heater at least
once a year. It will help extend the service life and
ensure safe and efficient operation.
Safety Issues

QVM 9 Series 6
Hot water temperatures required for automatic dishwasher and laundry use can cause scalds and
burns resulting in serious personal injury and/or death.
The temperature at which injury occurs varies with the person's age and time of exposure.
The slower response time of disabled persons increases the hazards to them. Never allow small
children to use a hot water tap, or to draw their own bath water. Never leave a child or disabled person
unattended in a bathtub or shower.
The water heater should be located in an area where the general public does not have access to the
temperature control.
Lower water temperatures should be used to avoid the risk of scalding. It is further recommended, in
all cases, that the water temperature be set for the lowest temperature which satisfies the user's hot
water needs. This will also provide the most energy efficient operation of the water heater and minimize
scale formation in the heat exchanger, thus prolonging the life of the unit.
Setting the water heater temperature at 120°F will reduce the risk of scalds. Some states require
settings at specific lower temperatures. The table below shows the approximate time-to-burn
relationship for normal adult skin.
Table- Risk of Scalds
Temperature
Setting
Time to Produce 2nd 3rd
Degree Burns on Adult Skin
Over 170 ℉ Nearly instantaneous
160 ℉ About 1/2 second
150 ℉ About 1-1/2 second
140 ℉ Less than 5 seconds
130 ℉ About 30 seconds
120 ℉ of less More than 5 minutes
USE ANTI-SCALD VALVE(S) IN HOT WATER SYSTEM TO REDUCE THE RISKS OF SCALDING AT
POINTS OF USE SUCH AS LAVATORIES, SINKS AND BATHING FACILITIES.
Scalds – First Aid
1. Remove clothing; Remove all wet clothing, quickly. Wet clothing retains the heat.
2. Apply cold water for 30 minutes; Immediately submerge the burnt area in cold water for 30
minutes to reduce the heat in the skin, preventing deeper burning. Never use butter, oils or ointment
to cover the burn. They may retain the heat.
3. Keep the scalded person warm; Place a blanket around the person.
4. Seek medical advice; Call your medical advice hotline and describe the scald, follow their directions.
Safety Issues

7 QVM 9 Series
THE QVM 9
QUIETSIDE’S VARIABLE-CAPACITY-MULTI-PURPOSE
90%+ HYDRONIC HEATING SYSTEM
The QVM 9 provides 2 different heating functions that operate independently from the same water heater. One
mode provides space heating water to heat the home. The other mode provides a continuous circuit of hot
water for domestic use e.g., bath, laundry, etc. Both circuits are separate and operate at different temperature
ranges.
The space-heating water is controlled by the FR-5 thermostat. A special thermostat has been provided that
enables the user to either set the room temperature required or set the heating water temperature. In some
cases this thermostat may not be suitable for multi-system applications(The installing contractor will make this
determination and install suitable alternative controls).
The domestic hot-water is controlled by the user. Because the QVM 9 is a multi-purpose design, it can
provide hot water on demand. There is no storage tank to hold hot water, when there is no use for it. The
QVM 9 will only produce hot water when you use it : instantaneously. The modulating gas burner allows water to
heat up evenly as it is being used. The QVM 9 will continue to heat the water until the source or sources are shut
off. This on-demand-use also helps to prevent water being held in the water heater for long periods of time.
IMPORTANT :
A thermostatic mixing valve should be installed on the domestic water supply pipe to control the supply water
temperature and prevent any possibility of scalding.
The QVM 9 prioritizes domestic hot water over space-heating water and will immediately stop producing
space-heating water the moment a hot water faucet or valve is opened anywhere in the home. Once the faucet
or valve has been turned off, the water heater will return to the home-heating function again.
The QVM 9 is designed with a special sealed-combustion venting process. Both sides of the combustion
process(inlet oxygen and outlet carbon monoxide) are isolated from each other and are totally sealed-off from
the air supply within the home. Infiltration, is reduced by as much as 90% making the QVM 9 one of the safest,
most comfortable and clean-burning water heater in the world.
Advantages of QVM 9 Hydronic Heating System
How Does it Wor
k
?
Domestic Hot Water Priority
The Seale
d
-Combustio
n
Process

QVM 9 Series 8
1. Continuous Hot Water Its On Demand! The QVM 9 makes running-out-of-hot-water obsolete.
2. Everything Built-in Installs in half the time.
3. Baked-on Beauty The high quality ceramic finish is baked on and keeps the exterior looking new and lustrous
for years to come.
4. Room Thermostat FR-5 Convenient and accurate, the large digital display is easier to read, easier to use. Our
new room thermostat gives the consumer digital control over several heating functions.
5. System Timer Save energy during times the home is unoccupied. Just set and activate the timer and leave.
The unit turns off for pre-programmed intervals until you return.
6. Performance Indicator With the use of the FR-5 electronic room thermostat, the (LED) will conveniently
display the current operating condition of the unit such as, room temperature, normal operation, etc.
7. Continuous-Discharge Ignition(C.D.I.) Direct ignition design does not require a pilot burner saving gas and money.
8. Combustion Safety Protection If the unit fails to ignite after the “HEAT ON” button is pressed, or if the flame
is extinguished due to a gas shortage, the
flame detector will shut down the unit.
9. Always Balanced Operation Despite fluctuating wind conditions, changes in atmospheric pressure and other
external disturbances, the variable-speed combustion blower provides optimum performance.
10. Exhaust Safety Protection While operating, the exhaust-discharge fan is continuously monitored. The unit
will be immediately stopped to prevent fumes from entering the home, if the wind gusts become excessive or
if the flue exhaust has become blocked.
11. Smart Re-Start Should the unit’s flame fail due to strong winds or low gas pressure, the unit will
automatically restart. In cold weather climates, manual resets could cause freeze damage.
12. Safety Protection During Power Outages When the power fails, the gas valve is automatically shut down.
13. Automatic Fill & Refill If for any reason the water level in the system drops to an unsafe level, the unit will
automatically open the fill valve.
14. Automatic Air Bleed Each unit has 2 built-in air bleed devices. One is manual and used for quick fill and
venting convenience; the other is air-activated and operates automatically.
15. Removal of Impurities Each unit comes equipped with a built-in, cleanable, heavy duty, particulate water
filter for trapping impurities and preventing the pipes from clogging. This is a maintenance item.
16. Air-Ratio Controller The air ratio is monitored, adjusted and controlled prior to and during each operating
cycle and will automatically adjust the combustion rate. The air-ratio controller prevents unsafe operating
conditions and also senses excessive gusts of wind in the flue system.
17. Proportional Temperature Control This control is designed to continually analyze water flow and usage while
maintaining the outgoing water at a constant, even temperature.
18. Condensing (QVM 9) Models These fully condensing units are engineered to recover and convert the
normally wasted heat from the discharge flue gasses to supply additional hot water.
19. New BTU Booster Flue Kit (standard equipment with QVM8 and QXM8, optional QVM9) This pre-engineered
venting system adds an additional 2% to the unit’s combustion efficiency by pre-heating the incoming
combustion air before it enters the unit. A single, 4-1/4″ diameter penetration through an exterior wall is all
that is required for this concentric venting system. Built of durable, polished, stainless steel. Kit includes
clamps, connectors, gaskets, pipe and trim ring.
Advantages of QVM 9 Hydronic Heating System
Quietside QVM Product Features and Functio
n

9 QVM 9 Series
1. Burner Safety Protection (Flame Detection)
When the flame fails or re-ignition fails, the gas supply is automatically cut off.
2. Safety Protection on Power Restoration
When the power is restored after a power failure, the water heater automatically starts and runs.
3. Ignition Failure Safety Protection (Flame Detection)
When the ignition fails, the gas supply is automatically cut off.
4. Safety Protection against Excessive Air Pressure
When a high air pressure exists in the flue, the air ratio control maintains correct combustion. When the
pressure becomes excessive, the gas supply is automatically cut off.
5. Explosive Ignition Protection
Explosive ignition is prevented with the air ratio control system.
6. Overheat Protection
Overheating burners or heat exchangers will automatically cut off the gas supply.
7. Low Water Level Safety
The water level in the heat exchanger is always monitored and the water heater will not start when there is no
water in the exchanger.
8. Thermostat Safety Protection
If the thermostat fails, combustion will be stopped and the gas supply is automatically cut off.
9. Freeze Preventation
When the temperature falls, the water heater automatically starts to prevent the freezing of the water heater.
When there is no gas available the circulation pump is automatically started.
10. Gas Pressure Control (Modulating Gas Control Valve)
Gas pressure is maintained constantly by the gas valve.
11. Short Circuit Safety Protection
A short circuit in the water heater will blow the fuse and automatically cut off the gas supply.
12. Auto Fan Detection
The rotation of the fan is automatically detected and controlled. Fan failure will stop the operation of the water heater.
13. Boiling Prevention
Excessive temperatures will automatically stop the water heater.
14. Lightning and Static Electricity Protection
Protection against lightning and static electricity is built into the controller.
Safety Protectio
n
Advantages of QVM 9 Hydronic Heating System

QVM 9 Series 10
■ Check for gas leaks by using
soapy water.
■ Check ventilation (air discharge
and inlet).
■ When the conditions for heating
and hot water are fully set. The
“HEAT ON” lamp will light and
the water heater will run.
■ If the water level is below a safe
level, the “Check” lamp will be
lit and the water heater will not
run. The water supply valve
should always be open so that
the auto water filling valve can
operate.
■ When the “Check” lamp is lit,
an error code is indicated on
the temperature indicator.
Contact the service center
or your dealer.
Use the selector button according to the applications .
■ Heating will start when either
the room or water temperature
falls below the set point.
■ If domestic hot water is
required during a heating cycle.
The unit will switch over from
heating to provide domestic
hot water.
■ When the use of hot water is
stopped. The unit automatically
converts back to the heating
mode.
■ If hot water is to be used
without heating, press the
“SUMMER” button on the
room thermostat.
■ Disconnect the water heater.
■ Drain the water in the water heater by opening the
drain or discharge valve (to prevent freezing in winter).
■ Close the water supply valve
and open the hot water tap to
drain water in the hot water
piping to prevent freezing in
winter.
■ Close the gas supply valve.
CAUTION
If the water heater not to be used for a few days,
selecting the “Away from Home Saving” mode will be
more effective and convenient in preventing freezing.
In this case, do not disconnect the water heater.
Proper Use
Before Usin
g
Notes for Ignitio
n
Open the gas supply valve .
Wire the unit to 115V 60Hz AC.
When the water heater is not use
d
for a Prolonged Period

11 QVM 9 Series
The units are released from our facility specially
packaged to prevent handling damage and contamination
in transit. Dropping or throwing the water heater or
moving them while outside of their shipping container
may cause damage or internal contamination by any
moisture remaining after testing. Do not stand the
water heater up by resting on the piping connections.
■ Never locate the unit outdoors,
such as an open porch patio or
exposed to the wind, rain, snow
and cold temperatures.
Special consideration must
be given to where the venting will terminate outdoors.
■ Do not locate the unit in an equipment room that has
an exhaust fan.
■ Install the unit securely on any non-combustible wall
that is capable of supporting the 90 lbs weight of this
equipment.
■ Maintain an 6″ clearance to the left and right of unit,
including 6″ clearance in front of the unit for safety
inspections and future access.
■ Do not install unit in an underground or semi-
underground location unless using the model FF or
SCF-9 flue kit.
■ When installing the unit, consideration must be given
to the proper location. The location selected should be
as close to the vent pipe termination outside the
building, and as centralized with the water piping
system as possible.
■
A minimum clearance of 4″ must be allowed for
access to replaceable parts such as the thermostats,
drain valve and relief valve.
■
As the gas water heater is to be installed indoors, they
shall not be installed outdoors, such as in the porch.
■ Do not install water heater on a combustible wall or in
a high humidity location.
WARNING
There is a risk in using fuel burning appliances in
rooms or areas where gasoline, other flammable liquids
or engine driven equipment or vehicles are stored,
operate or repaired. Flammable vapors are heavy and
travel along the floor and may be ignited by the igniter or
main burner flames causing fire or explosion. Some local
codes permit operation of gas appliances if installed 18-
inches or more above the floor. This may reduce the risk
if location in such an area cannot be avoided.
Flammable items, pressurized containers or any other
potential fire hazardous articles must never be placed on
or adjacent to the water heater.
Open containers of flammable material should not be
stored or used in the same room with the water heater.
Installation
■ WARRANTY WILL BE CONSIDERED VOID IF THIS EQUIPMENT IS INSTALLED BY ANYONE OTHER THAN
A QUALIFIED, TRAINED AND LICENSED (WHERE APPLICABLE ) HEATING TECHNICIAN.
■ QUIETSIDE CORPORATION IS NOT RESPONSIBLE FOR PROBLEMS OR DAMAGE CAUSED B
Y
IMPROPER INSTALLATION INCONSISTENT WITH THIS MANUAL.
■ THE INSTALLING CONTRACTOR MUST INSTRUCT THE OWNER ON THE FULL OPERATION OF THIS
PRODUCT.
■ THE INSTALLING CONTRACTOR MUST GIVE THE OWNER THE APPORPRIATE WARRANTY CERTIFICATE
AFTER THE INSTALLATION HAS BEEN COMPLETED.
Shipping from Factory
Choosing the Best Locatio
n

QVM 9 Series 12
■ The units must be firmly secured on the wall, which
can sufficiently hold the unit weight.
■ Exhaust vent pipe has a maximum length of 16
feet with upto three 90° elbows. Vent pipe must be
angled 2-3° toward the water heater to return
condensate.
■ The units should be grounded to prevent electric
shock.
■ Check if the gas indicated
on the rating plate is being
used. If not, change the
nozzle by consulting the
service center or dealers.
WARNING
CONVERSION OF THIS APPLIANCE FROM NATURAL
GAS TO PROPANE CAN ONLY BE PERFORMED BY A
QUALIFIED TECHNICIAN.
■ The flue should be properly installed as indicated
on the installation manual.
■ Dampers available in the market have high rate of
failure and disturb the normal operation of the
water heater. Never install any dampers.
■ Maximum length of the flue is 16-feets with upto
three 90° elbow being used. Flue φ is 3″ only.
See page 18 for details
■ The piping materials used
should meet local codes and
industry standards.
■ Piping must be cleaned and
flushed-out before installation.
■ Do not apply torch heat within 12" of the bottom
connections of the unit.
■ Perform all solder connections at a safe distance
from the (brass) male connectors below the unit.
Allow fittings to cool, before attaching to unit. Use
only approved coupling unions with O-rings to
attach field piping to unit.
■ The ‘heating’ pipe should be 3/4" and of type-L
copper, or PEX. Never use aluminum, PVC, or
galvanized steel piping.
■ The pipe size used for
supply heating water
should be the same size used for the
return
heating water.
■ Use only copper piping with lead-free solder for
the domestic water side.
■ Since the expansion tank has already been
installed in the unit, no separate tank is required.
■ The size of the domestic hot water pipe should be
1/2" diameter.
■ The length of piping should be as short as possible
and the piping should have minimal number of
bends and connections.
■ Use only ball type isolating valves. Do not use gate
valves.
■ Never leave the heating pipes disconnected while
operating the unit as a water heater. This will
cause damage to the heat exchanger and void the
manufacturers warranty.
■ All piping should be insulated.
■ After making the piping connections, check for
gas or water leaks.
■ If the water supply pressure is 142 psig or higher,
install the reduction valve on the water supply
piping.
■ If the water supply pressure is 4.3 psig or lower,
install a pressurizing pump.
Installation
Methods of Installatio
n
Check the type of Gas
Installation of the Flu
e
Installation of Water Pipin
g

13 QVM 9 Series
■ A Thermostatic mixing valve must be
added to this system to prevent
scalding. If you cannot find a mixing
valve locally, please contact your
Quietside dealer or local speciality
plumbing supplier.
Mixing type valve :
- Controls the desired hot water temperature and ensures constant hot water temperature in the
faucets (accuracy 2℉).
- Ensures safety through the built-in anti-burn/scald safeguard. Limits the deposits and
accumulation of scale.
- Includes built-in wire mesh filters and check valves for long and trouble-free operation.
Installation
Schematic of Piping Installatio
n

QVM 9 Series 14
■ Piping for heating and hot
water should be cleaned
before connecting to the unit.
CAUTION
Lime scale accumulation can reduce the life of the
equipment, reduce efficiency and waste fuel. Water heater
failure due to lime or scale buildup voids the warranty.
Check the metal tag on the relief valve and compare it to
the water heater’s rating plate. The pressure rating of the
relief valve must not exceed the working pressure shown on
the rating plate of the water heater. In addition, the hourly
BTU rated temperature discharge capacity of the relief valve
shall not be less than the input rating of the water heater.
NO VALVE IS TO BE PLACED BETWEEN THE RELIEF
VALVE AND TANK. DO NOT PLUG THE RELIEF VALVE.
The drain line connected to this valve must not
contain a reducing coupling or other restriction and
must terminate near a suitable drain to prevent water
damage during valve operation. The drain line shall be
installed in a manner to allow complete drainage of
both the valve and line. DO NOT THREAD, PLUG OR
CAP THE END OF THE DRAIN LINE.
■ The water heater needs a large quantity of air for
combustion, the specified vent must be installed.
If not incomplete combustion will occur and
prevent normal operation of the water heater.
WARNING
For safe operation, an ample supply of air must be
provided for proper combustion and ventilation in
accordance with the national fuel gas code, ANSI
Z223.1 or CAN/CGA-B149.1 or B149.2(latest editions)
or applicable provisions of the local building codes. An
insufficient supply of air may result in a yellow, luminous
burner flame, carboning or sooting of the finned heat
exchanger, or create a risk of asphyxiation. Do not
obstruct the flow of combustion and ventilation air.
NEVER OPERATE THE HEATER UNLESS IT IS
VENTED TO THE OUTDOORS AND HAS ADEQUATE
AIR SUPPLY TO AVOID RISKS OF IMPROPER
OPERATION, FIRE, EXPLOSION OR ASPHYXIATION.
■ The water heater should be
at least 24” away from
electric appliances. The
water heater is set up for
AC 115V 60Hz.
WARNING
The flow of combustion air to the water heater
must not be obstructed.
The water heater area must be kept clear and free
from combustible materials, gasoline and other
flammable vapors and liquids.
■ Flue made of schedule 40
PVC or stainless steel.
■ To facilitate the discharge
of exhaust gas, the flue
should be installed with
fewest possible bents and
curves. The flue should
have a diameter larger than
that of the flue of the water
heater.
■ Do not place flammable
items near the water heater.
Never place combustibles
such as vinyl bags, matches,
thinner, etc on water heater.
CAUTION
Read first before connection to power supply
Installation
Precautions for Installatio
n

QVM 9 Series 6
WARNING WARNING
There is a risk in using fuel burning appliances in
rooms or areas where gasoline, other flammable
liquids or engine driven equipment or vehicles are
stored, operated or repaired. Flammable vapors are
heavy and travel along the floor and may be ignited by
the igniter or main burner flames causing fire or
explosion. Some local codes permit operation of gas
appliances if installed 18-inches or more above the
floor. This may reduce the risk if location in such an
area cannot be avoided.
Flammable items, pressurized containers or any
other potential fire hazardous articles must never be
placed on or adjacent to the water heater.
Open containers of flammable material should not be
stored or used in the same room with the water heater.
DO NOT INSTALL THIS WATER HEATER DIRECTLY
ON A CARPETED FLOOR. A FIRE HAZARD MAY
RESULT. Instead the water heater must be placed on
a metal or wood panel extending beyond the full width
and depth by at least 3-inches in any direction. If the
heater is installed in a carpeted alcove or closet, the
entire floor should be covered by the panel.
Installation

QVM 9 Series 16
■ Use metal pipe or metal flexible pipe which has
been approved for use with gas and be sure to
install the shut off valve.
■ If propane gas is in used, the care should be
exercised for the following:
－ Use a household regulator for propane gas with
the capacity matching to the indicated gas
consumption of the unit.
－ Install two or more 110 lbs propane gas
cylinder (manifold cylinders together).
WARNING
This water heater is not intended to operate at gas
supply pressures other than those shown on the rating
plate.
Exposure to higher gas supply pressure may cause
damage to gas valves, which can result in fire or
explosion. If overpressure has occurred, such as through
improper testing of gas lines or emergency malfunction
of the supply system, the gas valves must be checked
for safe operation. Make sure that the outside vents on
the supply regulators and the safety vent valves are
protected against blockage. These are parts of the gas
supply system, not the water heater. Vent blockage may
occur during ice build-up or snow storms.
When local codes require a main manual shut-off
valve outside the water heater jacket, a suitable main
manual shut-off valve must be installed in a location
complying with those codes.
It is important to guard against gas valve fouling
from contaminants in the gas piping. Such fouling
may cause improper operation, fire or explosion. If
copper supply lines are used they must be approved
for gas service.
Before attaching the gas line be sure that all gas
pipe is clean on the inside.
To trap any dirt or foreign material in the gas supply
line, a dirt leg (sometimes called drip leg) must be
incorporated in the piping. The dirt leg must be readily
accessible and not subject to freezing conditions.
Install in accordance with recommendations of gas
supplier. Refer to national fuel gas code, ANSI Z223.1
or CAN/CGA-B149.1 or B149.2 (most recent edition).
■ Gas piping for water heater should be connected to
the main gas line and should not be shared by
other gas appliances.
Gas Piping Connections

QVM 9 Series 6
■ The heating water supply piping should be 3/4″. An isolation (ball-type) valve should be installed before the
piping is connected to the units.
■ Black iron piping or 3/4″ flexible connector (approved by the local authorities for gas) should be used for gas
piping.
■ Do not use Teflon tape for gas pipe connections.
■ Install a gas drip leg at the unit.
■ Gas piping should be kept at the required distance away from any electric lines and the main service
panel(check with local authorities).
Items Distance (inches)
1. Distance from electric lines 6″
2. Distance from electric heaters and electric panels 24″
3. Distance from flue pipes and outlets 12″
■ Install the ball valve(cut-off valve) before connecting the gas piping to the unit (Allow space for the lever’s full
movement, install valve as close to the unit as possible).
■ After the gas pipe has been completed, all connections must be checked with soapy water. Note! - Do not
test for gas leaks by pumping air-pressure into the line without first disconnecting the gas line to the unit.
Pressuring the unit will void the manufacturers warranty. Releasing this pressure into the unit will cause
immediate and severe damage to the gas valve and its internal pressure regulating device and could result in
property damage and/or personal injury.
Set DIP switch #1 to the ON position(priority fill). The pump will run continuously and the low water
level sensor will be automatically turned on/off for 1-minute intervals. Ensure that all water valves to
unit are open.
Twist open(approx. 1/2 turn) the manual air vent until a steady stream of water is flowing and the
spurting of air stops. – Open all other bleed valves on system.
Close the manual air vent (any remaining air will bleed out of the system by means of the automatic
air vent).
After the quick fill is complete, reset the #1 DIP switch to the OFF position.
If the heating flow sensor stays ON, stop the pump by resetting the #1 DIP switch(switch ON, then
back OFF again).
Remove strainer, check for debris, clean and refit.
Ensure that system pressure has been bled off using the pressure / relief valve.
NOTE ! - While in the Quick Fill mode, the power indicator light, on the FR-5 thermostat will flash : 1-second
ON and 1-second OFF.
Standard Gas Pipin
g
Consult with your gas provider to determine the proper diameter of gas pipe. This will
vary due to input capacity, the number of elbows and length of pipe.
Trial operation Quic
k
-Fill
STEP 1
Gas Piping Connections
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6

QVM 9 Series 18
■ Due to the extremely low flue temperatures, the QVM 9 series water heater may be vented using 3"
schedule-40 venting materials.
■ Cut all lengths of pipe cleanly maintaining a 90-degree square edge. Use long radius elbows whenever
possible.
■ Use only the type of adhesive recommended by the PVC pipe manufacturer.
■ Keep an uphill slant from water heater to the outside to ensure that all condensed water inside the pipe will
return back to the water heater.
■ Do not place the outdoor termination kit in an area where discharge gases will be directed towards
evergreen shrubbery.
■ Assemble the flue using the following illustration as a guide. Your installation may vary slightly from the
illustration shown below.
Installation of the Flue
Use the supplied SCF-2 Termination Kit for venting the QVM 9 water heater to the outside.
- Optional : The Stainless Steel SCF-9 Coaxial Vent Kit may be used in place of the SCF-2 PVC
Termination Kit.
PVC Venting Metho
d
NOTE
ⅰ) Ø 3″ Schedule 40 PVC pipe only.
ⅱ) Maximum three 90° elbows.
ⅲ) Slant flue 2 - 3° towards water heater for condensate return.