Giant UGT-180N Installation And Operation Manual Download

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Direct Vent Tankless Water Heater

— Do not store or use gasoline or other flammable 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.

If you cannot reach your gas supplier, call the fire department.

—

may result causing property damage, personal injury or death.

WARNING

READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING THIS WATER HEATER.

safety

-28.

performed.

FOR INDOOR APPLICATIONS ONLY

UGT-199N

UGT-199P

UGT-180N

UGT-180P

ANS Z21.10.3 CSA 4.3

GI-IM044En-0213

Summary of Contents for UGT-180N

Page 1: ...o not touch any electrical switch do not use any phone in your building If you cannot reach your gas supplier call the fire department may result causing property damage personal injury or death WARNING READ ALL OF THE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING OR OPERATING THIS WATER HEATER safety 28 performed FOR INDOOR APPLICATIONS ONLY UGT 199N UGT 199P UGT 180N UGT 180P ANS Z21 10 3 CSA 4 3 GI...

Page 2: ...titude U S 19 Adjust for High Altitude Canada 19 Adjust for Vent Length 20 Checklist for Gas and Electricity 20 Installation of Temperature Controller 20 Final Checklist 22 Technical Data 23 Specifications 23 Dimensions 24 Pressure Drop and Water Flow Curves 25 Ladder Diagram 26 Recirculation Mode 27 Operation Instructions 29 Consumer Operation Guidelines for the Safe Operation of your Water Heate...

Page 3: ...s appliance Always check the water temperature before entering a shower or bath To protect yourself from harm before performing maintenance Turn off the electrical power supply by unplugging the power cord or by turning off the electricity at the circuit breaker The temperature controller does not control the electrical power Turn off the gas at the manual gas valve usually located immediately bel...

Page 4: ...ions cannot be avoided it is recommended that a suitable drain pan adequately drained be installed under the appliance The pan must not restrict combustion air flow Do not obstruct the flow of combustion and ventilation air Combustion air shall not be supplied from occupied spaces Do not use this appliance in an application such as a pool or spa heater that uses chemically treated water This appli...

Page 5: ...as supply fail to shut off turn off the manual gas control valve to the appliance Keep the air intake location free of chemicals such as chlorine or bleach that produce fumes These fumes can damage components and reduce the life of your appliance Tankless water heater MC 91 2 temperature controller integrated into the front panel Pipe wrenches 2 Adjustable pliers Screwdrivers 2 Wire cutters Gloves...

Page 6: ...sive fumes may be released through these vents when air is not being brought in through them Chemicals that are corrosive in nature should not be stored or used near the water heater or vent termination Damage and repair due to corrosive compounds in the air is not covered by warranty Consideration of care for your water heater should include evaluation of water quality Water that contains chemica...

Page 7: ... Ref Description Canadian Installations US Installations A Clearance above grade veranda porch deck or balcony 12 inches 30 cm 12 inches 30 cm B Clearance to window or door that may be opened 36 inches 91 cm 12 inches 30 cm C Clearance to permanently closed window D Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2 feet 61 cm from the center line ...

Page 8: ...SIDE CORNER V V 0 30 m to an inside corner 0 30 m between terminals at same level Important considerations for locating vent termination under a soffit ventilated or unventilated or eave vent or to a deck or porch Do not install vent termination under a soffit vent such that exhaust can enter the soffit vent Install vent termination such that exhaust and rising moisture will not collect under eave...

Page 9: ...is 24 inches in front of the water heater For closet installation clearance is 6 inches 152 mm from the front to Combustibles inches mm to Non Combustibles inches mm Top of Heater 6 152 2 51 Back of Heater 0 zero 0 zero Front of Heater 6 152 6 152 Sides of Heater 2 51 1 2 13 Ground Bottom 12 305 12 305 Vent 0 zero 0 zero ...

Page 10: ... cover enclosures may be packed with insulation for added freeze protection In the event of a power failure at temperatures below freezing the water heater should be drained of all water to prevent freezing damage In addition drain the condensate trap and drain line Maximum vent length 1 Determine the number of 90 degree elbows in the vent system Two 45 degree elbows count as one 90 degree elbow 2...

Page 11: ...ies with the clearances The planned venting will not exceed the maximum length for the number of elbows used The planned venting termination air intake location meets the clearances The water supply does not contain chemicals or exceed total hardness that will damage the heat exchanger A standard 3 prong 120 VAC 60 Hz properly grounded wall outlet or other 120 VAC 60 Hz source is available The ins...

Page 12: ...You must use vent components that are certified and listed with the water heater model The vent system must vent directly to the outside of the building and use outside air for combustion Avoid dips or sags in horizontal vent runs by installing supports per the vent manufacturer s instructions Support horizontal vent runs every four feet and all vertical vent runs every six feet or in accordance w...

Page 13: ...cket Secure the first vent component to the water heater with one self tapping screw at the hole located above the condensate collector Bracket Condensate Collector Securing Screw Horizontal Termination without using the Condensate Collector Maximum Height 5 feet 1 52 m Regions of cold climate will create more condensate in the vent system The condensate collector should be used in cold climates I...

Page 14: ...end should not be under water or other substances To minimize freezing of the condensate run the condensate drain line through an interior wall or between insulation and an interior wall The condensate collector should be used for all hydronic heating applications Checklist for Venting and Condensate Verify proper clearances around the vents and air intakes Ensure you have used the correct venting...

Page 15: ...s and Automatic Gas Shutoff Devices for Hot Water Supply Systems ANSI Z21 22 and or the standard Temperature Pressure Temperature and Pressure Relief Valves and Vacuum Relief Valves CAN1 4 4 The relief valve must be rated up to 150 psi and to at least the maximum BTU hr of the appliance The discharge from the pressure relief valve should be piped to the ground or into a drain system to prevent exp...

Page 16: ...ng Pump Solenoid Valve Boiler Drain Valve KEY This is not an engineered drawing It is intended only as a guide and not as a replacement for professionally engineered project drawings This drawing is not intended to describe a complete system It is up to the contractor engineer to determine the necessary components and configuration of the particular system being installed This drawing does not imp...

Page 17: ...Giant recommends 30 80 psi for maximum performance Installation of Gas Supply MUST DO A manual gas control valve must be placed in the gas supply line to the water heater A union can be used on the connection above the shut off valve for the future servicing or disconnection of the unit Check the type of gas and the gas inlet pressure before connecting the water heater If the water heater is not o...

Page 18: ...t then the 3 4 inch pipe size is capable of supplying 264 FT3 HR of natural gas Gas Input of all gas products BTU HR Heating Value of Gas BTU FT 3 Cubic Feet per Hour CFH Any compound used on the threaded joint of the gas piping shall be a type which resists the action of liquefied petroleum gas propane LPG The gas supply line shall be gas tight sized and so installed as to provide a supply of gas...

Page 19: ...n switches set switches 2 and 3 to the values shown in table below for your altitude The default setting for the appliance is 0 2000 ft 0 610 m with switches No 2 and No 3 in the OFF position When the DIP switch is adjusted it is not necessary to adjust the gas pressure setting for high altitude Altitude SW1 Switch No 2 SW1 Switch No 3 0 2000 ft 0 610 m OFF OFF 2001 5200 ft 610 1585 m OFF ON 5201 ...

Page 20: ...28 ft 100 m 2 164 ft 50 m 3 65 ft 20 m Turn the power off Do not attempt to connect the temperature controllers with the power on Although the controller is a low voltage device there is 120 volt potential next to the temperature controller connections inside the unit Do not connect the temperature controller to the 120VAC terminals provided for the optional solenoid drain valves WARNING Checklist...

Page 21: ...ller terminals on the right hand side bottom of the PCB 9 Secure the controller cable using the clamp provided 10 Replace plastic cover over PCB and then replace the cover of the water heater Outline of Remote securing screw 1 21 32 3 5 16 securing screw wiring hole Configurations A maximum of 4 temperature controllers can be installed for a water heater or bank of water heaters This includes the ...

Page 22: ...he isolation valves Ensure that a pressure relief valve is installed with a rating that exceeds the BTU input of the water heater model Refer to the rating plate on the side of the water heater for BTU input A manual gas control valve has been placed in the gas line to the water heater Check the gas lines and connections for leaks Confirm that the gas inlet pressure is within limits Confirm that t...

Page 23: ...y Factor 0 82 Noise level 49 dB excluding start up or shutdown Electrical Data Normal 76 W 97 W Standby 2 W Anti frost Protection 120 W Max Current Without recirculation pump 4 A With recirculation pump 8 A exact value depends on the pump Fuse 10 A By Pass Control Fixed Electronic Gas Supply Pressure Natural Gas 4 0 10 5 inch W C Propane 8 0 13 5 inch W C Type of Appliance Direct Vent Tankless Tem...

Page 24: ...4 356 6 22 95 583 0 4 1 8 10 45 Variable 9 27 235 5 5 05 128 1 2 67 67 8 A DIMEN SION Inches mm DIMEN SION Inches mm A GAS 1 31 33 2 D 4 33 110 A COLD 1 93 49 E 2 89 73 3 A HOT 1 35 34 4 F 1 85 47 B 4 21 106 9 G 3 44 87 3 C 1 17 29 8 Inches millimeters DIA 0 62 1 59 ...

Page 25: ...6 7 8 9 10 11 Pressure Drop Curve Water Flow Curve UGT 180 Pressure Loss ft head Water Flow gpm Pressure Loss psi Water Flow gpm delta T Temperature Rise F UGT 199 UGT 199 UGT 180 The chart below only applies to incoming water temperatures of 70 F 21 C or less For incoming water temperatures greater than 70 F 21 C please contact Giant NOTICE ...

Page 26: ...26 UGT Series Manual Ladder Diagram UGT 199 ONLY UGT 199 ONLY ...

Page 27: ...turn line according to the pump manufacturer installation instructions Install a check valve in the return line as shown in the Plumbing Diagram if one is not integrated into the pump 3 The wire harness for the recirculation pump is bundled with the wire harness from the PC board The connector has a black and white wire with the label Cut wire to connect to pump To connect to the pump cut the conn...

Page 28: ...based on the temperature thermistor readings Economy Mode The Economy mode operates as follows Less energy consumed due to fewer pump cycles Assumes plumbing is insulated minimal pipe heat loss Pump cycles on every 31 to 79 minutes see table Comfort Mode The Comfort mode operates as follows Higher energy consumption due to more pump cycles Assumes plumbing is not insulated resulting in higher pipe...

Page 29: ...esses please contact customer service and ask not to have your information shared We will however continue to contact you with information relevant to the product s you registered and or you account with us Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Leave the premises Do not try to light any applianc...

Page 30: ... water TO TURN OFF GAS TO APPLIANCE 1 Turn off all electric power to the appliance using the ON OFF button 2 Set the thermostat to lowest setting 3 Locate the manual gas valve on the side of the heater Turn the manual valve clockwise to the full OFF position OPERATING INSTRUCTIONS 1 STOP Read the safety information above 2 Set the thermostat to lowest setting 3 Turn off all electric power to the a...

Page 31: ...rs and liquids Always check the water temperature before entering a shower or bath Do not use this appliance if any part has been under water Immediately call a licensed professional to inspect the appliance and to replace any part of the control system and any gas control which has been under water Should overheating occur or the gas supply fail to shut off turn off the manual gas control valve t...

Page 32: ...ing All hot water sources are able to provide water at this temperature setting until it is changed again at this or another temperature controller DANGER Hot water can be dangerous especially for infants or children the elderly or infirm There is hot water scald potential if the thermostat is set too high Water temperatures over 125 F 52 C can cause severe burns or scalding resulting in death Hot...

Page 33: ... 130 135 140 150 160 UGT 199 185 Celsius C 37 38 39 40 41 42 43 46 49 52 54 57 60 66 71 85 These settings require the MCC 91 2 controller When the MCC 91 2 controller is connected these higher temperatures are available on all controller models in the system Use of an MCC 91 2 controller in a residential dwelling will reduce the warranty coverage to that of a commercial warranty application Altern...

Page 34: ...tic code if one has been activated All of the controllers in the system are also locked To unlock the controller press the Priority button and the up button together for 5 seconds To Display Diagnostic Information To display the most recent diagnostic information codes press and hold the On Off button for 2 seconds on the MC 91 2 controller While holding the On Off button press the up button The l...

Page 35: ...sure vent length is within limits Verify dip switches are set properly Check power supply for loose connections Check power supply for proper voltage and voltage drops Ensure flame rod wire is connected Check flame rod for carbon build up Disconnect and reconnect all wiring harnesses on unit and PC board Check for DC shorts at components Check gas solenoid valves for open or short circuits Remove ...

Page 36: ...for carbon build up clean with sand paper Check inside burner chamber for any foreign material blocking flame at flame rod Measure micro amp output of sensor circuit with flame present Replace flame rod 79 Water Leak Detected Water has been detected at the bottom of the unit Turn off water supply Check all plumbing internally for leakage LC LC0 LC1 LC2 Scale Build up in Heat Exchanger when checkin...

Page 37: ...needs to be treated or conditioned When checking maintenance code history 00 is substituted for LC Snow Accumulation Keep the area around flue terminal free of snow and ice The appliance will not function properly if the intake air or exhaust is impeded blocked or partially blocked by obstructions Clean the water filter Clean the inlet water filter by closing the cold and hot water inlet isolation...

Page 38: ...any issues resulting from the use of this information GAS Shut off the gas to the water heater It is generally preferable to shut off the gas service to the entire location if gas is not going to be used WATER Shut off the cold water supply to the water heater It is generally preferable to shut off the water to the entire location if water is not going to be used Drain the water heater by opening ...

Page 39: ... virgin food grade white vinegar into pail 6 Place the drain hose H3 and the hose H2 to the pump inlet into the cleaning solution 7 Open both service valves V1 and V2 on the hot water and cold water lines 8 Operate the pump and allow the vinegar to circulate through the water heater for at least 1 hour at a rate of 4 gallons per minute 15 1 liters per minute 9 Turn off the pump 10 Rinse the vinega...

Page 40: ...emperature controller is off turn on the gas supply 8 Turn on the temperature controller Running a low volume of water through the water heater to prevent freezing If the temperature exceeds the ability of the water heater to freeze protect itself or if power is lost the following steps may prevent the water heater and external piping from freezing Units connected with EZ Connect 2 unit link shoul...

Page 41: ... licensed professionals for the installation of hard wired carbon monoxide detectors a In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and battery back up may be installed on the next adjacent floor level b In the event that the requirements of this subdivision can not be met at th...

Page 42: ... water heater This Limited Warranty coverage as set out in the table below extends to the original purchaser and subsequent owners but only while the product remains at the site of the original installation This Limited Warranty only extends to the first original installation of the product and terminates if the product is moved or reinstalled at a new location HOW LONG DOES WARRANTY COVERAGE LAST...

Page 43: ...installed adjacent to a free flowing drain in the event of water leakage 8 If the heater is operated at water temperatures exceeding the maximum setting of the operating and or high limit control or the heater is not supplied with potable water free to circulate at all times 9 Incorrect sizing 10 Improper maintenance such as but not limited to scale build up freeze damage or vent blockage 11 Probl...

Page 44: ...hom the water heater was purchased is essential to settle any warranty claim dispute over the length of the period of installation If an exact replacement is not available a current model water heater or component part with comparable oper ating features will be provided by the manufacturer If government regulations or industry standards require the replacement model water heater or component part...

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