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5)  Open the hot water valve and the water 

supply valve.

 

   Check that water does not leak from the 

water drain valves.

 

3)  Clean the water filters with a brush under 

running water.

 

4)  Reattach the water drain valves (with water 

filter).

NOTE

Do not to lose the O-Ring.

DHW Cold Water Supply

DHW Hot Water Supply

Auto Feeder Supply 

ZONE 1

ZONE 2

ZONE 3

(Pre-charged : 12 psi)

LWCO   (Optional)

Zone1

For Additional Zone

Zone2 Zone3 Zone# 

Zone

Valve1

Zone

Valve2

Zone

Valve3

Zone

Valve#

ZONE CONTROLLER

T - T

...

...

7 5

7 5

7 5

7 5

Thermostat (T-T)

Wiring Terminal on the Computer Board

[I:09_EPP]

External Pump function

should be activated by 

set installer mode.

＊

1

Pressure Reducing Valve

(Less than 30 psi)

＊

2

Make up water

Incase of External Water Feeder Usage

Wiring Diagram

[CN237]

Pump

[CN233]

T - T

Pressure Relief Valve

Pressure Gauge

Check Valve

(Back Flow Preventer)

Air Separator

Zone Valve

Expansion Tank

Circulation

 

Pump

(Circulator) 

System Purge Ball Valve

Ball Valve

To drain outlet

*1  Noritz stocks the “Manifold Kit” for easy heating 

installation.

 

The “Manifold Kit” allows to install primary and 

secondary heating loop easier and has shut off 

valves and service ports for connecting hoses. 

Refer to the Combi Boiler’s Installation Manual for 

detail information.

*2  Noritz stocks the “Isolation Valve (Service Valve 

Kit)” for easy DHW installation.

 

The “Isolation Valve (Service Valve Kit)” is 

necessary for flushing the Plate Heat Exchanger. 

[Typical Heating and DHW diagram]

Water Filling and Trial Operation

Содержание GHQ-C2801WX-FF US

Страница 1: ...with this Installation Manual upon completion After completing installation either place this Installation Manual in a plastic pouch and attach it to the side of the Combi Boiler or the inside of the...

Страница 2: ...ng the DHW pipe 40 8 1 Installation 40 8 2 Water treatment 42 9 Connecting the Heating Pipe 44 9 1 General Requirements 44 9 2 Low Water Cutoff LWCO 44 9 3 Pressure Relief Valve 45 9 4 Auto Feeder Con...

Страница 3: ...to accumulate protect the vent termination from blockage by snow drifts or damage from snow falling off of roofs Check the Power The power supply required is 120 VAC at 60 Hz Using the incorrect volta...

Страница 4: ...8 ft above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 in in...

Страница 5: ...1 Included Accessories Quick Connect Cord 1 QC 2 PVC Concentric Termination 1 2 in 50 mm PVC 2CT 3 in 75 mm PVC 3CT 2 in SV Conversion Kit 1 SV CK 2 90 Elbow With Inlet Screen 2 in 3 in Increaser cou...

Страница 6: ...in both Canada and USA Plastic Rain Cap PRC 1 Not approved for use in Canada Neutralizer 1 NC 1S Manifold Kit 1 MK NRCB 1 Isolation Valve 1 each Includes pressure relief valve Isolation valves are ne...

Страница 7: ...Connection Sizes DHW Cold Water Inlet NPT 3 4 in DHW Outlet NPT 3 4 in Heating Supply NPT 1 in Heating Return NPT 1 in Heating Pressure Relief Valve NPT 3 4 in Auto Feeder Inlet NPT 1 2 in Gas Inlet N...

Страница 8: ...V GHQ C2801WX FF US Gas Consumption Maximum Minimum Maximum Minimum DHW NG 199 900 Btu h 18 000 Btu h 180 000 Btu h 18 000 Btu h LP 199 900 Btu h 18 000 Btu h 180 000 Btu h 18 000 Btu h Heating NG 120...

Страница 9: ...9 Memo About the Combi Boiler...

Страница 10: ...WATER INLET BOTTOM 2 3 58 CONDENSATE DRAIN BOTTOM 1 7 42 GAS INLET BOTTOM 2 2 55 Outdoor Temperature Sensor 1 3 34 3 6 92 2 3 58 4 x 0 5 13 2 x 0 24 x 0 4 6 x 10 OBLONG HOLE 4 x 0 24 x 0 6 6 x 15 OBL...

Страница 11: ...LET 1 HEATING WATER INLET 1 AUTO FEEDER WATER INLET 1 2 WATER DRAIN VALVE DOMESTIC WATER OUTLET 3 4 DOMESTIC WATER INLET 3 4 GAS INLET 3 4 WATER FILTER WATER DRAIN VALVE WATER FILTER WATER DRAIN VALVE...

Страница 12: ...ve with Water Filter Water Drain Valve with Water Filter Heating Supply Auto Feeder Shutoff Valve Water Drain Valve Heating Return Auto Feeder Inlet Gas Supply Valve Water Drain Valve Water Supply Val...

Страница 13: ...Combi Boiler is designed for either indoor or outdoor installation For information about outdoor installation contact Noritz America at 1 866 766 7489 Never install it in a bathroom it may be damaged...

Страница 14: ...ating appliance the potential for leakage at some time in the life of the product does exist The manufacturer will not be responsible for any water damage that may occur Water quality If this Combi Bo...

Страница 15: ...rapped to avoid moving during an earthquake Contact local utilities for code requirements in your area or call 1 866 766 7489 and request instructions For Venting Manufacturers Requirements see the No...

Страница 16: ...3 18 in 76 457 mm 4 Installation Clearances 4 1 Indoor Installation Before installing check for the following Install in accordance with relevant building and mechanical codes as well as any local st...

Страница 17: ...sary force to the appliance when installing Internal parts may be damaged and may become highly dangerous WARNING 2 Hang the Combi Boiler on the Wall Mounting Bracket 3 Affix the Mounting Bracket Lowe...

Страница 18: ...d below If the vent pipe has already been installed After installing the condensate drain pipe make sure that the area around the Combi Boiler is well ventilated open a window or a door if necessary T...

Страница 19: ...se schedule 40 80 CPVC or PP If the Combi Boiler set temperature is 160 F 70 C or higher use schedule 40 80 CPVC or PP Refer to the following This Combi Boiler must be vented with plastic pipe materia...

Страница 20: ...he Combi Boiler flue to the termination In Canada plastic vent systems must be certified to ULC S636 The components of the certified vent system must not be interchanged with other vent systems or unl...

Страница 21: ...ength of flue pipe Slope the horizontal vent 1 4 in upwards for every 12 in 300 mm toward the chimney from the Combi Boiler Check and confirm that there is no tension to the flexible pipe by hanging o...

Страница 22: ...he electrical power to the Combi Boiler to reset the system Do not store hazardous or flammable substances near the vent termination and check that the termination is not blocked in any way Steam or c...

Страница 23: ...nt Flex Through Chimney w Air Intake Only 3 in The vent length condition setting depends on the flexible pipe length the rigid pipe length and number of elbows Calculate an each ventilation system equ...

Страница 24: ...lect Long length Centrotherm Flex Through Chimney w Air Intake Only 3 in The vent length condition setting depends on the flexible pipe length the rigid pipe length and number of elbows Calculate an e...

Страница 25: ...from the outdoors Combustion air and exhaust are seperate vent pipes Combustion air Exhaust Direct Vent Combustion air is supplied from the surrounding indoor air Combustion air Exhaust Non Direct Ven...

Страница 26: ...line of the regulator vent outlet to a maximum vertical distance of 15 ft 4 5 m J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 6 in 15 cm...

Страница 27: ...now level Ceiling Interior Wall e g Horizontal Hood Termination installation e g Horizontal Hood Termination installation e g PVT 2LPT installation Exhaust 3 in 75 mm or 2 in 50 mm Intake 3 in 75 mm o...

Страница 28: ...ctions other than directly downward will increase the risk of freezing Reversing the air intake and exhaust pipes is not allowed Carbon Monoxide CO emissions and noise due to vibration will increase W...

Страница 29: ...2CT installation PVC 2CT or PVC 3CT Install a securing strap to prevent movement of the termination For Horizontal PVC Concentric Termination PVC CPVC Material Only The concentric termination may be s...

Страница 30: ...n End of 90 Elbow Bird Screen is not supplied with Combi Boiler order separately To prevent excessive condensation formation only the vent termination should be located on the exterior of the building...

Страница 31: ...couplings need to be used just prior to 3 in Concentric Termination The length of the pipe between the Increaser couplings and the Exhaust and Intake Flue of the Combi Boiler and the concentric termin...

Страница 32: ...um vertical distance of 15 ft 4 5 m J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 6 in 15 cm for appliances 10 000 Btuh 3kW 12 in 30 cm...

Страница 33: ...a cease in operation If this occurs disconnect then reconnect the electrical power to the Combi Boiler to reset the system Here 6 5 3 Combustion Air NOTE Provide adequate combustion air so as to not c...

Страница 34: ...Min Insert Bird Screen in End of Termination Bird Screen is not supplied with Combi Boiler order separately It is not necessary to use Bird Screens with the Hood Termination PVT HL Either a tee or the...

Страница 35: ...by the vent pipe manufacturer s instructions A short horizontal section is required to prevent debris from falling into the Combi Boiler When using a horizontal section slope the horizontal vent 1 4 i...

Страница 36: ...able for some models The conversion kit shall be installed by a qualified service agency in accordance with the manufacturer s instructions and all applicable codes and requirements of the authority h...

Страница 37: ...Calculation Example A partial set of sizing tables are printed on page 39 In cases where these tables are not appropriate refer to the NFPA 1 Draw a sketch of a piping system Enter the system informa...

Страница 38: ...red demand for the section is found Read up to find the size Repeat for each section of piping Enter this size in the table below 5 Enter the input rating for each appliance in the table below For nat...

Страница 39: ...Drop Pipe Size Length including fittings 10 ft 20 ft 30 ft 40 ft 50 ft 60 ft 70 ft 80 ft 90 ft 100 ft 125 ft 150 ft 175 ft 200 ft 3 m 6 m 9 m 12 m 15 m 18 m 21 m 24 m 27 m 30 m 38 m 45 m 53 m 60 m 1...

Страница 40: ...Combi Boiler used to supply potable water may not be connected to any heating system or components previously used with a nonpotable water heating appliance 8 1 Installation 8 1 1 Guidelines Cold wate...

Страница 41: ...tself from freezing by operating the pump and turning on the burner when the thermistor detects lower than 39 F 4 C Freezing is prevented within the Combi Boiler automatically unless the outside tempe...

Страница 42: ...e compatible A water test may be required 2 Install Isolation Valve to allow for flushing 3 Flushing is required if a water treatment device is not installed NOTE Damage to the Combi Boiler as a resul...

Страница 43: ...eat Exchanger regularly needs to be flushed to prevent damage from Scale Build up Refer to the Procedure for flushing the Plate Heat Exchanger on page 82 or contact Noritz America at http support nori...

Страница 44: ...e located so as to provide adequate access for cleaning repairing testing and inspection Oxygen Elimination This Combi Boiler may only be installed in a pressurized closed loop heating system free of...

Страница 45: ...for more information on approved pressure relief valves Install pressure relief valve Field Supplied No other valve should be installed between the pressure relief valve and Combi Boiler Direct the di...

Страница 46: ...heating system e g pipes appliance each zone with water The built in Auto Feeder will be used for filling primary loop and maintaining the system pressure Therefore the manufacturer recommends to fill...

Страница 47: ...ave power at all times Freezing is prevented within the Combi Boiler automatically unless the outside temperature without wind is below 4 F 20 C If this model is installed in an area where the outside...

Страница 48: ...the Combi Boiler will stop operating Long runs or applications where the nearest drain is above the Combi Boiler Require the use of a condensate pump Size the pump to allow for a maximum condensate di...

Страница 49: ...i Boiler within 15 minutes after operation has started Freeze prevention Take measures to prevent the condensate drain lines from freezing insulation heat tape electric heaters etc Drain pipe Drain co...

Страница 50: ...o so may result in death or serious injury from electrical shock WARNING Breaker Installation Mount a device which shuts off the electrical path automatically leakage breaker to detect electrical leak...

Страница 51: ...onnect Cord QC 2 sold separately See the optional accessory list on page 5 NOTE When connecting two units use only the Combi Boiler s Operation Display This system is operated by the Combi Boiler s Op...

Страница 52: ...6 7489 if you have any questions or concerns NOTE The Water Heater can be set as the master unit in the quick connect multi system The master unit controls the DHW ON OFF status of the Combi Boiler in...

Страница 53: ...0 160 140 120 100 80 60 10 20 30 40 50 Outdoor Temperature F C Heating Set Temperature F C 60 70 80 7 CU_ l 04 NOTE The optimal set up should be determined for each job location 7 CU default setting M...

Страница 54: ...o save the settings and to exit the function And additional menu items will become available to adjust The icon will flash if the outdoor sensor is not detected This function will appear within the fi...

Страница 55: ...or on an exterior surface of the building preferably on the North or Northeast side in an area that will not be affected by direct sunlight or will be exposed to varying weather conditions For correct...

Страница 56: ...relieve stress of wire 7 Replace the cover The hook should be attached to the stopper 8 Tighten the screw by hand using a Phillips screwdriver indicated in the figure 2 Remove the cover by lifting it...

Страница 57: ...l When this input is enabled 1 5 VDC or more an external control system can be used to control the set point temperature of the Combi Boiler The control interprets the 0 10 volt signal as follows when...

Страница 58: ...l External Voltage Control System without Room Thermostat and Outdoor Temperature Control with Outdoor Temperature Sensor and Room Thermostat The Installer Mode screen appears 4 When entering the Inst...

Страница 59: ...ng electrical power and before pressing the ON OFF button I 00_FC Fahrenheit Celsius 1 sec NOTE This function will appear within the first 10 minutes of connecting electrical power and before pressing...

Страница 60: ...Ft 1 Ft Ft Fin Tube Baseboard 2 AH AH Air Handler 3 CI CI Cast Iron Baseboard 4 Lr Lr Low Mass Radiant Floor 5 rF rF Mass Radiant Floor 6 rA rA Radiator 7 CU CU Custom I 03_Hot Highest Outdoor Temper...

Страница 61: ...an external pump is used Default setting OFF I 07_bSt Boost Timing 1 sec NOTE When I 01_HCt setting is 2 or or 3 EC this function will appear This setting is to increase the set temperature during un...

Страница 62: ...ng Burner OFF Temperature Heating Set Temperature I 12_bFt Burner ON Temperature Heating Set Temperature I 13_bot I 14_HPS Heating Water Pressure Setting 1 sec This function is to control the water pr...

Страница 63: ...of DHW Heating 2 dH dH dHW DHW Priority I 17_dHt DHW Wait Time 1 sec This setting is when the duration of the Combi Boiler maintains the DHW supply mode after a DHW demand The circulation pump will k...

Страница 64: ...merica Limited Warranty Check whether for the hydronic heating appliance and plumbing are acceptable it Simultaneous Operation Flow Y Y N N N N Y 1 DHW supply temperature does not fluctuate During DHW...

Страница 65: ...e F C 80 90 100 110 120 130 140 150 160 170 180 82 77 71 66 27 32 38 43 49 54 60 32 38 43 49 54 60 80 90 100 110 120 130 140 150 160 170 180 82 77 71 66 27 32 38 43 49 54 60 80 90 100 110 120 130 140...

Страница 66: ...82 C In 1 C intervals 43 Options 1 The ON OFF button is ON e g 10 15AM 2 Press the TEMP button once The current Heating Temperature Setting and Heating Icon will be blinking Initial factory setting is...

Страница 67: ...buttons to change the parameter value e g OFF 5 Select 1 sec and then press the ENTER button to enter the function 14 Service Reminder 15 Setting the DIP Switches How to change the DIP switches 1 Dis...

Страница 68: ...t operate the Combi Boiler explain to the customer how to use the Combi Boiler and give the owner this manual before leaving the installation Water Filling for Combi Boiler and Heating System The pipi...

Страница 69: ...Operation NOTE White smoke may be noticed from the exhaust vent during cold weather This is not a malfunction of the Combi Boiler If the Combi Boiler does not operate normally refer to Troubleshootin...

Страница 70: ...e condensate drain piping Condensate will begin flowing out of the Combi Boiler within 15 minutes after operation has started error code 64 will continue to be displayed on the Operation Display This...

Страница 71: ...Pressure Reducing Valve Less than 30 psi 2 Make up water Incase of External Water Feeder Usage Wiring Diagram CN237 Pump CN233 T T Pressure Relief Valve Pressure Gauge Check Valve Back Flow Preventer...

Страница 72: ...shut off valves drain all of the water out of the Combi Boiler and the plumbing system to prevent the Combi Boiler and system from freezing and bleed the gas out of the gas line Refer to the procedure...

Страница 73: ...haust pipe are properly installed Make sure that the vent system comforms with local codes state codes or national codes as ANSI NFPA and CSA Connecting the Gas Supply See page 36 39 Yes No Make sure...

Страница 74: ...ipe is open to the atmosphere Make sure that the condensate has been treated before disposal as necessary when required by local code or when the condensate could cause damage Make sure that measures...

Страница 75: ...appliance heat exchanger and related piping On long pipe runs it is recommended to keep the pump at maximum speed setting 3 DO NOT lower it from the factory default 9 Install a backflow preventer val...

Страница 76: ...T T I 09 EP should be ON in lnstaller Mode to activate this terminal DHW Cold Water Supply Recommended Pressure Setting 15 30 psi T T CN237 Pump CN233 T T ZONE 1 ZONE VALVES TYPICAL EXTERNAL PUMP In...

Страница 77: ...gram ZONE2 Pump ZONE3 Pump ZONE1 ZONE2 ZONE CONTROLLER ZONE3 DHW Supply DHW Cold Water Supply Auto Feeder ZONE 1 PRESSURE GAUGE PRESSURE REDUCING VALVE ZONE 2 ZONE 3 BACKFLOW PREVENTER MAKE UP WATER B...

Страница 78: ...W Cold Water Supply Air Handler Air Handler PCB Wiring Diagram Heating Return Heating Supply Auto Feeder EXTERNAL PUMP I 09 EP should be ON in lnstaller Mode to activate this terminal Recommended Pres...

Страница 79: ...ing Mode can not operate It depends on the relationship between the Domestic Hot Water Temperature and the Heating Temperature Globe Valve Pump 1 Expansion Tank Install according to local code Fixture...

Страница 80: ...operated by the Combi Boiler s Operation Display Don t connect the remote controller to the water heater The Water Heater s remote controller Included Accessory will be required to troubleshoot make...

Страница 81: ...to ensure that it is functioning properly and there is no obstruction Turn the power off to the Combi Boiler before opening the pressure relief valve and make sure that water draining out of the valve...

Страница 82: ...tic Water Outlet valve V2 3 Connect the one drain hose H1 to the drain valve V3 and then the other to the circulating pump 4 Connect the drain hose H2 to the circulating pump 5 Connect the drain hose...

Страница 83: ...H for flushing The code C00 goes out on the Operation Display 7 Close the front cover 8 Open the gas supply valve and Domestic Water Outlet valve V2 9 Check for correct operation of the Combi Boiler D...

Страница 84: ...on the Operation Display when the Combi Boiler detects the flow of the flushing solution When 1 minute passes the code C60 will change to C59 on the Operation Display When 1 hour passes the code C00...

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