Noritz CB199-DV User manual

Installation Manual
CONDENSING GAS COMBI BOILER
WARNING
–Donotstoreorusegasolineorotherinammable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redepartment.
–Installationandservicemustbeperformedbyaqualiedinstaller,serviceagencyorthegassupplier.
Iftheinformationintheseinstructionsisnotfollowedexactly,areorexplosionmayresult,
causingpropertydamage,personalinjury,ordeath.
ThankyouforpurchasingthisNoritzCondensingGasCombiBoiler.
Beforeusing,please:
Readthisguidecompletelyforoperationinstructions.
Completelylloutthewarrantyregistrationcard(includedseparately)andmailthedetachableportiontoNoritz
AmericaCorporation.Keepthisguide(andtheremainderofthewarrantyregistrationcard)where
itcanbefoundwhenevernecessary.
Installationmustconformwithlocalcodes,orintheabsenceoflocalcodes,theNationalFuelGasCode,ANSI
Z223.1/NFPA54-latesteditionand/orNaturalGasandPropaneInstallationCode(CSAB149.1-latestedition).
Whererequiredbytheauthorityhavingjurisdiction,theinstallationmustconformtotheStandardforControlsand
SafetyDevicesforAutomaticallyFiredBoilers,ANSI/ASMECSD-1.
NoritzAmericareservestherighttodiscontinue,orchangeatanytime,thedesignsand/orspecicationsofits
productswithoutnotice.
Models
CB199-DV / CB180-DV
Natural Gas(NG) / Liquid Propane Gas(LP)
Rev.11/15

2
Chapter 1 Product Accessories 1-1 Included Accessories 3
1-2 Optional Accessories 3
Chapter 2 Product Specications 2-1 Specications 4
2-2 Dimensions & Connections 5
Chapter 3 Safety Requirements 3-1 Safety Precautions 6
3-2 Before Installation 7
3-3 Choosing Installation Site 8
3-4 Installation Clearance 10
Chapter 4 Installation 4-1 Securing to the Wall 13
4-2 Vent Pipe Installation 14
4-3 Gas Piping 21
4-4 Water Piping 24
4-5 Heating Installation 26
4-6 Low Water Cutoff 27
4-7 Pressure Relief Valve 28
4-8 Condensate Piping 31
4-9 Electrical Wiring 32
4-10 Wiring Diagram For External Options 33
4-11 Plumbing Guidelines 34
4-12 Air Handler 37
4-13 Trial Run-Auto Feeder Process 39
Chapter 5 Setting 5-1 Outdoor Temperature Reset 40
5-2 Installer Mode (Parameter Settings) 46
Chapter 6 Maintenance 6-1 Final Check List 51
6-2 Maintenance 52
Memo 54

3
1-1. Included Accessories The following accessories are included with the unit. Check for any missing
items before starting installation.
1-2. Optional Accessories The accessories listed below are not included with the unit, but may be
necessary for installation.
Chapter1.–ProductAccessories
Part Shape Q’ty
Combi Boiler 1
Anchors /
Wall Mounting
Bracket /
Emergency Kit
1
each
Outdoor
Temperature
Sensor 1
Part Shape Q’ty
PVC Terminal
VK3-H-PVC 1
VK3-PVC-VAS 1
PVC Terminal
PRC-1 1
SV Conversion Kit
(#SV-CK-3)
•90 Elbow
(With Inlet Screen)
1
Neutralizer
(NC-1)
(For 1 Combi Boiler)
1
Part Shape Q’ty
Owner’s Guide,
Warranty Card,
Installation Manual,
Quick Installation
Quide,
Technical Data Sheet,
Part List
1
each
Bird Screen with
Finishing (3") 2
Pressure
Relief Valve
for Heating
(ASME Certied)
(3/4 ", 30 psi)
1
Part Shape Q’ty
Horizontal
Hood
Termination
PVT-HL
1
each
Isolation Valve
Set for DHW
(IK-WV-200-
1-XX)
1
Pressure
Relief Valve
for DHW
( 3/4 ",150 psi)
1
Bird Screens
with Finishing
(2")
(After market)
2

4
Chapter2.–ProductSpecications Specications
Model Name CB199-DV CB180-DV
Gas Input Rate
(DHW mode)
MAX 199,000 Btu/h 180,000 Btu/h
MIN 18,000 Btu/h 18,000 Btu/h
DHW Capacity
35°F Rise 9.2 GPM 9.2 GPM
45°F Rise 7.7 GPM 7.2 GPM
77°F Rise 4.5 GPM 4.2 GPM
Gas Input Rate
(Heating mode)
MAX 120,000 Btu/h 100,000 Btu/h
MIN 18,000 Btu/h 18,000 Btu/h
Installation Indoor Wall Hung
Flue System Sealed Combustion Direct Vent, Single Vent
Max Vent Run 2″(50ft) / 3″(100ft) Schedule 40 PVC, CPVC, PP
Orice Size NG (Gas / Needle) 0.342″(8.7mm) / 0.354″(9.0mm)
LP (Gas / Needle) 0.271″(6.9mm) / 0.279″(7.1mm)
Gas Supply Pressure NG 3.5" WC to 10.5" WC
LP 8.0" WC to 14.0" WC
Manifold Pressure
Gas Type NG LP NG LP
Low Fire 2″/ 3″ VENT -0.10 ± 0.01WC -0.06 ± 0.01WC -0.10 ± 0.01WC -0.06 ± 0.01WC
High
Fire
DHW 2″/ 3″ VENT -0.36 ± 0.01 WC -0.30 ± 0.01WC -0.31 ± 0.01 WC -0.26 ± 0.01WC
Heating 2″/ 3″ VENT -0.20 ± 0.01 WC -0.15 ± 0.01 WC -0.18 ± 0.01 WC -0.13 ± 0.01 WC
Power Supply
Main Supply 120VAC 60Hz
Maximum
Power Consumption
187W(71W+116W Pump) 180W (64W + 116W Pump)
120VAC 250W Max 2A External Pump (Optional)
Ignition System Direct Electronic Ignition / Automatic Flame Sensing
Burner System Premixed Metal Fiber Burner
Gas Valve System Air Ratio Valve
Minimum Flow Activation Flow 0.5 GPM
Internal Pipe Material STS 304, Copper Tubing
Dimensions W17.3″ – H28.7″ – D14.8″
Weight 90lb
Water Holding Capacity Under 2 Gallon
Control Panel /Circuit Board P-960C / NGTX-9600C
Water Pressure MAX DHW150 psi / Heating 30 psi
MIN DHW 15 psi / Heating 12 psi
Materials Case Cold Rolled Carbon Steel
Heat Exchanger Heat Exchanger : STS 304
Safety Devices
Flame Sensor, High Limit Switch ,
Gas Leakage Detector , Water Leakage Detector
Exhaust Thermistor, Pressure Sensor
Heating Supply Thermistor
2-1. SpecicationsSpecications may be changed without prior notice.The capacity may differ slightly,
depending on the water pressure, water supply, piping conditions, and water temperature.

5
Dimensions & Connections
Chapter2.–ProductSpecications
Description Size Description Size
A Exhaust 3" F Condensate
Drain 1/2"
B Air Intake 3" G DHW Cold
Water Inlet 3/4"
C
Pressure Relief
Valve for Heating
3/4" H Heating Return 1"
D DHW Outlet 3/4" I Auto Feeder
Inlet 1/2″
E Heating Supply 1" J Gas 3/4"
NO Name of Component NO Name of Component
1 Pressure Relief Valve 22 Auto Feeder
2 Exhaust 23 Condensate Trap
3 Air Vent 24
Heating Return Connection
(Filter)
4 Igniter 25 DHW Cold Water Connection
5 Exhaust Thermistor 26 Gas Connection
6 Ignition Rod
27
Circulation Pump
7 Burner Limit Switch 28 DHW Cold Water Thermistor
8 High Limit Switch 29 Heating Return Thermistor
9 Heating Supply Thermistor 30 Water Flow Sensor
10 Primary Heat Exchanger 31 Flow Control Valve
11 Heating Outlet Pipe 32 Air Pressure Switch
12 Manual Power Switch 33 Pressure Sensor
13 Control Panel 34 Secondary Heat Exchanger
14 Circuit Board 35 Gas Valve
15 3-Way Valve 36 Flame Sensor
16 DHW Plate Heat Exchanger 37 Burner
17 DHW Thermistor 38 AGM (Air Gas Mixer)
18 DHW Connection 39 Fan Motor
19 Heating Supply Connection 40 Air Inlet Filter
20 Water Leakage Detector 41 Air Intake
21 AC 24V Transformer
2-2. Dimensions & Connections
A B
D
E
H
G
F J
I
C
14.8" [377mm]
17.3" [440mm]
4.6" [117mm]
16.0" [407mm]
11.5" [292 mm]
28.7" [730mm]
3.6" [92mm]
2.6" [66mm]
7.5" [190mm]
9.9" [251mm]
3.8" [97mm]
9.3" [236mm]
15.5" [393mm]
15.0" [382mm]
8.3" [212mm]
2.5" [63 mm]
4.1"[105 mm]
6.0" [154mm]
7.5" [191mm]
3.6" [92mm]
1.5" [37mm]
1
4
7
8
11
12
14
15
16
18 19 20
21
22 23
24
25 26 27
28
29
30
31
32
34
33
35
36
37
38
2
39
40
41
3
5
6
17
9
10
13
5.6" [144mm]

6
Safety Precautions
Chapter3.–SafetyRequirements
WARNING
To avoid product damage, personal injury, or even possible death, carefully read, understand, and
follow all the instructions in the Installation Manual and Owner’s Guide before installation, operation
and service of the Combi Boiler.
Noritz cannot anticipate every circumstance that might involve a potential hazard. Therefore, all
possible incidents are not included in our warnings. Proper installation, operation, and service are
your responsibility.
You must make sure that the operation and settings of the Combi Boiler are safe for you and for
others.
This manual provides Safety Symbols. When the user fails to adhere to the following requirement, it will cause death, serious damages,
and a great property loss.
For safety symbols, ‘DANGER’, ‘WARNING’, ‘CAUTION’ are indicated and the denitions for these terms are as follow:
Indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury. This signal word is limited to the most extreme situations.
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury. It is also used to alert against unsafe practices and hazards involving only
property damage.
3-1. Safety Precautions
DANGER
WARNING
CAUTION

7
DANGER
Before Installation
Chapter3.–SafetyRequirements
Check the xing brackets and vent pipe yearly for damage or wear. Replace if necessary.
3-2. Before Installation
WARNING
Precautions on Vent Pipe Replacement
The vent system will almost certainly need to be replaced when this appliance is being installed.
Only use vent materials that are specied in this Installation Manual for use on this appliance. Refer
to the “Vent Pipe Installation” section for details. If PVC, CPVC, or Category IV listed pipe is already
installed, check for punctures, cracks, or blockages and consult with the vent pipe manufacturer
before reusing.
Improper venting may result in res, property damage or exposure to Carbon Monoxide.
Snow Precaution
If this product will be installed in an area where snow is known to accumulate, protect the vent
termination from blockage by snow drifts or damage from snow falling off of roofs.
Check the Gas
Check that the rating plate indicates the correct type of gas.
Check that the gas supply line is sized for 199,000 Btu/h/ 120,000Btu/h
(DHW / Heating mode) of CB199-DV model.
Check that the gas supply line is sized for 180,000 Btu/h/ 100,000Btu/h
(DHW / Heating mode) of CB180-DV model.
Check the Power
The power supply required is 120VAC, at 60Hz.
Using the incorrect voltage may result in re or electric shock.
Do Not Use Equipment for Purposes Other Than Those Specied.
Do not use for other than increasing the temperature of the water supply, as unexpected accidents
may occur as a result.
Check Water Supply Quality
If the water supply is in excess of 12 grains per gallon (200 mg/L) of hardness, acidic or otherwise
impure, treat the water with approved methods in order to ensure full warranty coverage.
CAUTION

8
Choosing Installation Site
Chapter3.–SafetyRequirements
3-3. Choosing Installation Site
Locate the appliance in an area where leakage from the unit or connections will not result in damage to the area
adjacent to the appliance or to the lower oors of the structure. When such locations cannot be avoided, it is
required that a suitable drain pan, adequately drained, be installed under the appliance.
The pan must not restrict combustion air ow.
DANGER
Locate the vent terminal so that there are no obstacles around the termination and so that exhaust
can’t accumulate. Do not enclose the termination with corrugated metal or other materials.
WARNING
Avoid places where res are common, such as those where gasoline,
benzene and adhesives are handled, or places in which corrosive gases
(ammonia, chlorine, sulfur, ethylene compounds, acids) are present. Using
the incorrect voltage may result in re or cracking.
Avoid installation in places where dust or debris will accumulate. Dust may
block the air-supply opening, causing the performance of the device fan to
drop and incomplete combustion to occur as a result.
Avoid installation in places where special chemical agents (e.g., hair spray
or spray detergent) are used. Ignition failures and malfunction may occur as
a result.
Carbon Monoxide Poisoning Hazard. Do not install this Combi Boiler in a
mobile home, recreational vehicle or on a boat.
The Combi Boiler is designed for indoor installation only. Never install it
outdoors or in a bathroom, it may be damaged or a re may be caused.
Consult with the customer concerning the location of installation.
Install the Combi Boiler in an area that allows for the proper clearances to
combustible and noncombustible construction. Consult the rating plate on
the appliance for proper clearances.
Do not install the Combi Boiler in a place where it may be threatened by
falling objects, such as under shelves.
The Combi Boiler must be installed in a place where supply and exhaust
pipes can be installed as directed.
Do not install the Combi Boiler where the exhaust will blow on outer walls or material not resistant to
heat. Also consider the surrounding trees and animals.
The heat and moisture from the Combi Boiler may cause discoloration of walls and resinous materials,
or corrosion of aluminum materials.
CAUTION

9
Choosing Installation Site
Chapter3.–SafetyRequirements
State of California:
The Combi Boiler must be braced, anchored or strapped to avoid moving during an earthquake. Contact local utilities for
code requirements in your area or call: 1-866-766-7489 and request instructions.
Avoid installation above gas ranges or stoves.
Avoid installation between the kitchen fan and stove. If oily fumes or a large
amount of steam are present in the installation location, take measures to
prevent the fumes and steam from entering the equipment.
Install the unit in a location where the exhaust gas ow will not be affected
by fans or range hoods.
Take care that noise and exhaust gas will not affect neighbors. Avoid
installation on common walls as the unit will make some operational noises
while it is running.
Before installing, make sure that the exhaust ue termination meets
clearance requirements proper clearances according to the National Fuel
Gas Code (ANSI Z223.1).
CAUTION

10
Installation Clearances
Chapter3.–SafetyRequirements
Cooking Equipment
<When the indoor air supply>
• If the unit will be installed in the vicinity of a permanent
kitchen range or stove that has the possibility of generating
steam that contains fats or oils, use a dividing plate or
other measure to ensure that the unit is not exposed to air
containing such impurities.
* The dividing plate should be of noncombustible material of
a width greater than the Combi Boiler.
Securing of space for repair/inspection
If possible, leave 8" (200mm) or more on either side of the
unit to facilitate inspection.
If possible, leave 24" (600mm) or more in front of the unit to
facilitate maintenance and service if necessary.
If possible, leave 3" (75mm) or more above and below the
vent pipe to facilitate inspection and repair if necessary
Distance from combustibles
Maintain the following clearances from both combustible
and non-combustible materials.
3-4. Installation Clearances
WARNING
Before installing, check for the following:
Install in accordance with relevant building and mechanical codes, as well as any local, state or national
regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSI Z223.1/NFPA
54 – latest edition. In Canada, see NaturalGasandPropaneInstallationCode(CSAB149.1-latestedition).
for detailed requirements.
Combi
Boiler

11
Installation Clearances
Chapter3.–SafetyRequirements
Description US Direct Vent
Installations 1
Canadian Direct Vent
Installations 2
A Clearance above grade, veranda, porch, deck, or balcony 12 in (30 cm) 12 in (30 cm)
B Clearance to window or door that may be opened 12 in (30 cm) 36 in (91 cm)
C Clearance to permanently closed window * *
DVertical clearance to ventilated soft located above the terminal within
a horizontal distance of 2 feet from the center line of the terminal * *
EClearance to unventilated soft * *
F Clearance to outside corner * *
G Clearance to inside corner * *
HClearance to each side of center line extended above meter/regulator
assembly *
3 ft (91 cm) within a
height 15 ft above the
meter/regulator assembly
I Clearance to service regulator vent outlet * 3 ft (91 cm)
JClearance to non-mechanical air supply inlet to building or the combus-
tion air inlet to any other appliance 12 in (30 cm) 36 in (91 cm)
K Clearance to a mechanical air supply inlet
3 ft (91 cm) above if
within 10 ft (3 m) hori-
zontally
6 ft (1.83 m)
LClearance above paved sidewalk or paved driveway located on public
property * 7 ft (2.13 m)
†
M Clearance under veranda, porch, deck, or balcony * 12 in (30 cm) ‡
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the outdoors (Direct Vent)>
1 In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2 In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves
both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier. Clearance to opposite wall is 24 inches (60 cm).

12
Installation Clearances
Chapter3.–SafetyRequirements
Description US Non-Direct 1Canadian Non-Direct 2
A Clearance above grade, veranda, porch, deck, or balcony 12 in (30 cm) 12 in (30 cm)
B Clearance to window or door that may be opened
48 in (120 cm) below or to
side of opening; 12 in (30
cm) above opening
36 in (91 cm)
C Clearance to permanently closed window * *
DVertical clearance to ventilated soft located above the terminal within
a horizontal distance of 2 feet from the center line of the terminal * *
EClearance to unventilated soft * *
F Clearance to outside corner * *
G Clearance to inside corner * *
HClearance to each side of center line extended above meter/regulator
assembly *
36 in (91 cm) within a height
15 ft (4.57 m) above the
meter/ regulator assembly
I Clearance to service regulator vent outlet * 36 in (91 cm)
JClearance to non-mechanical air supply inlet to building or the combus-
tion air inlet to any other appliance
48 in (120 cm) below or to
side of opening; 12 in (30
cm) above opening
36 in (91 cm)
K Clearance to a mechanical air supply inlet 36 in (91 cm) above if with-
in 10 ft (3 m) horizontally 6 ft (1.83 m)
LClearance above paved sidewalk or paved driveway located on public
property * 7 ft (2.13 m)
†
M Clearance under veranda, porch, deck, or balcony * 12 in (30 cm)
‡
Clearance Requirements from Vent Terminations to Building Openings
<When supplying combustion air from the indoors (Non-Direct Vent)>
1 In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
2 In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves
both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the oor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier. Clearance to opposite wall is 24 inches (60 cm).

13
1.Use the wall bracket to mark two locations where the anchor
bolts will be inserted.(Make sure that the wall bracket is level)
2. Drill two holes with a 15/32"(12mm) size bit and insert the two
anchor bolts into the holes with the threaded end out.
3. Place the wall bracket on the two anchor bolts.
4. Place washers and nuts on each anchor bolt and tighten.
Make sure that it is leveled and it can support the weight of
the Combi Boiler.
5. Lift up the Combi Boiler, rest the unit on the hooks provided
on the wall bracket that is already mounted on the wall.
6. Locate the lower mounting bracket on the bottom of the
Combi Boiler. The two screws and dry wall anchors will be
used to securer the bottom of the unit to the wall.
9. Place the Combi Boiler back on the wall. (same as step 5)
10. Screw in the two screws into the dry wall anchors.
Securing to the wall
Chapter4.–Installation
4-1. Securing to the wall
WARNING
CLEARANCES FOR SERVICE ACCESS
The Combi Boiler must be installed on a wall that can bear its weight.
If you try to install the Combi Boiler on a wall which cannot support its weight, please reconsider.
The Combi Boiler can be installed on any suitable internal wall (suitable sound proong may be required
when installing onto a stud partition wall).
Afx the screws into dry wall anchors.
Position the bracket securely to the wall.
7. Mark two holes. Then remove the Combi Boiler from the wall.
8. Drill two holes with a 17/64"(7mm) size bit.
Then insert the two dry wall anchors into the wall.

14
Chapter4.–Installation
General Requirements
• Under normal conditions, this appliance will not produce an exhaust ue temperature in excess of 149°F (65°C) and schedule 40
PVC pipe may be used as the vent material. If the Combi Boiler set temperature is 160°F (70°C) or higher, schedule 40 CPVC
or PP must be used.
• When using CPVC or PP, a setting must be changed in the Installer Mode [6:Vt].
This setting will allow the burner cutoff temperature to be increased from 149°F(65°C) to 200°F(93°C).See the next page for details.
• Make sure the vent system is gas tight and will not leak.
• Support the vent pipe with hangers at regular intervals as specied by these instructions or the instructions of the vent manufacturer.
• Do not common vent or connect more than one appliance to this venting system.
• The total vent length including horizontal & vertical vent runs should be no less than 3' (0.9m).
• Do not store hazardous or ammable substances near the vent termination and check that the termination is not blocked in any way.
Venting With PVC or CPVC, Polypropylene(PP)
This appliance can be vented with non cellular core plastic pipe materials as specied in the below table.
Vent installations in Canada which utilize plastic vent systems must comply with ULC S636.
Item Material United States Canada
Exhaust /Air Intake
Schedule 40 PVC ANSI/ASTM D1785
ULC S636 Certied
Materials Only
PVC-DWV ANSI/ASTM D2665
Schedule 40 CPVC ANSI/ASTM F441
Polypropylene(PP) ANSI/ASTM 7254
Pipe Cement/Primer PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
Note: Do Not Use Cellular Foam Core Pipe
• Use only solid PVC or CPVC schedule 40 or PP pipe. Cellular foam core piping is not allowed.
• In Canada, plastic vent systems must be certied to ULC S636. The components of the certied vent system must not be interchanged
with other vent systems or unlisted pipe/ttings.
• In Canada, specied primers and glues of the ULC S636 certied vent system must be from a single system manufacturer and not
intermixed with other system manufacturer’s vent system parts.
• PVC, CPVC or PP pipe has been approved for use on this appliance with zero clearance to combustibles.
• Follow all general venting guidelines as outlined on this page.
• The pipe shall be installed so that the rst 3' (0.9m) of pipe from the appliance ue outlet is readily accessible for visual inspection.
• When preparing and assembling the pipe, follow instructions as provided by the pipe manufacturer. In general, the following
practices must be observed:
* Squarely cut all pieces of pipe.
* Remove all burrs and debris from joints and ttings.
* All joints must be properly cleaned, primed, and cemented. Use only cement and primer approved for use with the pipe
material as outlined in the above table.
• All piping must be fully supported. Use pipe hangers at a minimum of 3' (0.9m) intervals. Do not use the Combi Boiler to support
the vent piping.
• A bird screen must be installed on the vent terminations to prevent debris or animals from entering the piping.
Vent Pipe Installation
4-2. Vent Pipe Installation (Indoor Installation Only)

15
Chapter4.–Installation Vent Pipe Installation
• This Combi Boiler has a built-in control to limit the exhaust temperature to 149°F (65°C).
As a result, the Combi Boiler can be vented with Schedule 40 PVC.
• In high temperature applications, the exhaust temperature can exceed 149°F (65°C).
In that case, you must use Schedule 40 CPVC or Approved Polypropylene (PP) in the USA or Type BH
Special Gas Vent Class IIB (CPVC) or Class IC(Polypropylene) that conforms to ULC-S636 in Canada.
CAUTION
1. Turn off the control panel.
2. Press and hold the ‘Function Button’ for approximately
5 seconds to get into the ‘Installer Mode’.
3. Turn the ‘Dial Button’ clockwise until ‘6: Vt’ displays.
4. Press the ‘Dial Button’ (‘PVC’ will be blinking),
then turn the ‘Dial Button’ clockwise
so ‘CPVC’ is blinking.
1
23
5. Press the ‘Dial Button’ in order to
save the setting.
6. Press the ‘Function Button’,
to return to normal mode.
Vent Material Setting
• This Combi Boiler is set to "PVC" (factory default). The Combi Boiler will control and maintain the exhaust temperature
below 144°F (62°C) and the Combi Boiler will shut down when the exhaust temperature exceeds 149°F (65°C).
PVC Venting
• When you design a high temperature application (the exhaust temperature can exceed 149°F (65°C)),
you must use Schedule 40 CPVC or Approved Polypropylene (PP) in the USA or Type BH Special Gas Vent
Class IIB (CPVC) or Class IC(Polypropylene) that conforms to ULC-S636 in Canada and must change the
Vent Material Setting as follows.
• In this case, the Combi Boiler will control and maintain the exhaust temperature below 195°F (90.5°C)
and the Combi Boiler will shut down when the exhaust temperature exceeds 200°F (93°C) .
CPVC or Polypropylene(PP) Venting

16
3 inch pipe 2 inch pipe (A eld supplied PVC reducer bushing must be used)
Chapter4.–Installation Vent Pipe Installation
Tightening
• You can select the size of vent pipe(2" or 3") according to the installation conditions.
• Push the pipe into the unit ue until it touches the bottom.
• Tighten the band clamps using a screwdriver.
• Finally, make sure that both pipes(exhaust & air intake) are securely xed.
Vent Termination
Bird Screen Installation
• Install vent screen (Only 3" bird screens are included as accessories), see the below 󰘰gure for appropriate
con󰘰guration.
• After connecting vent/air inlet terminal, it is required to install a bird screen into the termination to prevent
incoming of debris and animals, which might cause damage to the unit.
(2" bird screen (1/4" mesh) must be purchased for 2" venting installation)
AllowableSchedule40VentLength(PVC,CPVC,PP)
* The termination elbow must be included in the total number of elbows.
Maximum Vent Length
The unit can be adjusted to accommodate longer vent runs; refer to the below table to nd the maximum vent
length based on the number of elbows.
3" bird screen (1/4" mesh)
Pipe diameter 3"(75mm) 2"(50mm)
No. of Elbows Max. straight Vent Length*
6 70
´
N/A
5 75
´
N/A
4 80
´
18
´
3 85
´
26
´
2 90
´
34
´
1 95
´
42
´
0 100
´
50
´
Reducer bushing
• 5 feet (1.5M) for each additional
3-inch 90-degree elbow
• 2.5 feet (0.75M) for each additional
3-inch 45-degree elbow
• 8 feet (2.4M) for each additional
2-inch 90-degree elbow
• 4 feet (1.2M) for each additional
2-inch 45-degree elbow

17
Vent Pipe Installation
Chapter4.–Installation
Horizontal Vent Termination- PVC/CPVC/PP Materials
Only
• As illustrated on the right, make sure to keep a distance of 3'
(0.9m) or wider between the intake and exhaust when installing the
vent piping.
* If 3' (0.9m) remote distance between Intake and Exhaust cannot
be ensured, the installation can be carried out only in the installa-
tion method shown in page 19.
• The PVT-HL termination may be used in place of elbows as the
horizontal vent terminations. It is not necessary to use bird screens
with the PVT-HL termination.
• Terminate at least 12" (300mm) above grade or above snow line.
• Terminate at least 7' (2.1m) above a public walkway, 6' (1.8m)
from the combustion air intake of any appliance, and 3' (0.9m) from
any other building opening, gas utility meter, service regulator etc.
• Terminate at least 3' (0.9m) above any forced air inlet within 10'
(3m) , 1' (0.3m) below, 1' (0.3m) horizontally from or 1' (0.3m)
above any door, window, or gravity air inlet into any building per
National Fuel Gas Code ANSI Z223.1/NFPA 54.
• Slope the horizontal vent 1/4" upwards for every 12" (300mm)
toward the termination.
• Use a condensation drain if necessary.
• In the Commonwealth of Massachusetts a carbon monoxide de-
tector is required for all side wall horizontally vented gas fuel equip-
ment. Please refer to Technical Bulletin TB 010606 for full installa-
tion instructions.
Vertical Vent Termination- PVC/CPVC/PP Materials Only
• As illustrated on the right, make sure to keep a distance of 3'
(0.9m) or wider between the intake and exhaust
when installing the vent piping.
• Terminate at least 6' (1.8m) from the combustion air intake of any
appliance, and 3' (0.9m) from any other
building opening, gas utility meter, service regulator etc.
• Enclose exterior vent systems below the roof line to limit conden-
sation and protect against mechanical failure.
• When the vent penetrates a oor or ceiling and is not running in a
re rated shaft, a restop and support is
required.
• When the vent termination is located not less than 8' (2.4m) from
a vertical wall or similar obstruction,
terminate above the roof at least 2' (0.6m), but not more than 6'
(1.87m), in accordance with the National
Fuel Gas Code ANSI Z223.1/NFPA 54.
• Provide vertical support every 3' (0.9m) or as required by the vent
pipe manufacturer’s instructions.
• A short horizontal section is recommended to prevent debris from
falling into the Combi Boiler.
• When using a horizontal section, slope the horizontal vent 1/4"
upwards for every 12" (300mm) toward the
termination to drain condensate.
When choosing intake and exhaust terminations, you must use the
same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both terminations in
the same pressure zone.
When choosing intake and exhaust terminations, you must
use the same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both
terminations in the same pressure zone.
Vent Pipe Installation (DV-Direct Vent)
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2"not supplied with Combi Boiler,
purchase separately.
Combi
Boiler
* 2" not supplied with Combi
Boiler, purchase separately.

18
Vent Pipe Installation
Chapter4.–Installation
Concentric PVC/CPVC Termination
• PP can not be used if the concentric termination is being used. Must use PVC or CPVC.
• The concentric termination may be shortened, but not lengthened from its original factory supplied length.
• 2" (50mm) & 3" (75mm) PVC or CPVC pipe may be used with the concentric termination. Reducers will be needed to connect 2" pipe.
Maintain the same vent pipe diameter from the Combi Boiler ue to the termination.
• Do not exceed the maximum vent lengths as specied in this section.
• There must be a 1" (25mm) to 4" (100mm) clearance between the outside wall and the air intake section of the termination as
illustrated on the left.
• Install a securing strap to prevent movement of the termination.
• Terminate at least 12" (300mm) above grade or above snow line.
• Terminate at least 7' (2.1m) above a public walkway, 6' (1.8m) from the combustion air intake of any appliance, and 3' (0.9m) from any
other building opening, gas utility meter, service regulator etc.
• Terminate at least 3' (0.9m) above any forced air inlet within 10' (3m), 1' (0.3m) below, 1' (0.3m) horizontally from or 1' (0.3m) above
any door, window, or gravity air inlet into any building per National Fuel Gas Code ANSI Z223.1/NFPA 54.
• Slope the horizontal vent 1/4” upwards for every 12" (300mm).
• Use a condensation drain if necessary.
Vent Pipe Installation (DV-Direct Vent)
Vertical
Horizontal
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Combi Boiler,
Combi
Boiler,

19
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Vent Pipe Installation
Chapter4.–Installation
• Intake and exhaust should face the same direc-
tion. Intake and exhaust should stay within the
same pressure zone.
• Insert the bird screen. 90° elbow vertical setting
(downward).
• Ensure at least 3ft (0.9m) or more distance
between the near edge of the air intake pipe or
exhaust pipe to the inside corner of a wall.
• Ensure at least 2ft (0.6m) or more distance
between intake pipe and exhaust pipe. The
distance is measured at inside of pipe to inner
dimension.
• Intake and exhaust should face the same direc-
tion. Intake and exhaust should stay within the
same pressure zone.
• Insert the bird screen. 90° elbow vertical setting
(downward).
• Ensure at least 3ft (0.9m) or more distance
between edge of air intake pipe or exhaust pipe
and corner wall.
• Upper side is exhaust, lower side is intake. The
reverse orientation is not allowed.
• Ensure at least 1ft (0.3m) or more distance
between intake pipe and exhaust pipe. The dis-
tance is measured at the outlets of intake port
(terminal) and exhaust port (terminal).
• Intake and exhaust should face the same direc-
tion. Intake and exhaust should stay within the
same pressure zone.
• Insert the bird screen. 90° elbow vertical setting
(downward).
• Ensure at least 3ft (0.9m) or more distance
between edge of air intake pipe or exhaust pipe
and corner wall.
• The pipe farther from the wall is intake, the side
near the wall is exhaust. The reverse connection
is not allowed.
• Ensure at least 1ft (0.3m) or more distance
between intake pipe and exhaust pipe. The
distance is measured at inside of pipe to inner
dimension.
Horizontal Vent Termination- PVC/CPVC/PP Materials Only
* When 3' (0.9m) remote distance between Intake and Exhaust cannot be ensured.
* Can not use Hood termination (PVT-HL)
Vent Pipe Installation (DV-Direct Vent)

20
Vent Pipe Installation
Chapter4.–Installation
Horizontal Vent Termination- PVC/CPVC/PP Materials
Only
• A tee, the PVT-HL termination may be used for the vent
termination. It is not necessary to use bird screens with the PVT-
HL termination.
• Terminate at least 12" (300mm) above grade or above snow line.
• Terminate at least 7' (2.1m) above a public walkway, 6' (1.8m)
from the combustion air intake of any appliance, and 3' (0.9m)
from any other building opening, gas utility
meter, service regulator etc.
• Terminate at least 3' (0.9m) above any forced air inlet within 10'
(3m) , 4' (1.2m) below, 4' (1.2m) horizontally from or 1' (0.3m)
above any door, window, or gravity air inlet into any
building per National Fuel Gas Code ANSI Z223.1/NFPA 54.
• Slope the horizontal vent 1/4" upwards for every 12" (300mm)
toward the termination.
• Use a condensation drain if necessary.
• In the Commonwealth of Massachusetts a carbon monoxide
detector is required for all side wall horizontally vented gas fuel
equipment.
Vertical Vent Termination- PVC/CPVC/PP Materials Only
• Terminate at least 6' (1.8m) from the combustion air intake of any
appliance, and 3' (0.9m) from any other building opening, gas utility
meter, service regulator etc.
• Enclose exterior vent systems below the roof line to limit
condensation and protect against mechanical failure.
• When the vent penetrates a oor or ceiling and is not running in a
re rated shaft, a restop and support is required.
• When the vent termination is located not less than 8' (2.4m) from
a vertical wall or similar obstruction, terminate above the roof at
least 2' (0.6m), but not more than 6' (1.87m), in accordance with
the National Fuel Gas Code ANSI Z223.1/NFPA 54.
• Provide vertical support every 3' (0.9m) or as required by the vent
pipe manufacturer's instructions.
• A short horizontal section is recommended to prevent debris from
falling into the Combi Boiler.
• When using a horizontal section, slope the horizontal vent 1/4"
upwards for every 12" (300mm) toward the termination to drain
condensate.
Provide adequate combustion air so as to not create
negative pressure within the building.
• Provide two permanent openings to allow circulation of
combustion air.
• Make each opening 199 square inches if they provide indoor
air, and 100 square inches for outdoor air.
• If the unit is installed in a mechanical closet, provide a 24"
(600mm) clearance in front of the unit to the door.
• If combustion air will be provided through a duct, size the duct
to provide 60 cubic feet of fresh air per minute.
* When supplying combustion air from the indoors (SV-CK-3 Conversion Kit is required)
Vent Pipe Installation (SV-Non Direct Vent)
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YWIGO\WWP
2" not supplied with Combi Boiler,
purchase separately.
2" not supplied with Combi Boiler,
purchase separately.