Raypak 122-322 Operating And Installation Instructions Download Page 16 | Manualshive

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SECTION F: DOMESTIC HOT WATER PIPING

When designing the water piping system for domestic water applications, water hardness should be considered. Table F-1
indicates the suggested flow rates for soft, medium and hard water. Hardness is specified as grains per gallon.

TABLE F-1

DOMESTIC WATER HEATER

FLOW RATE REQUIREMENTS

* Must use optional Cupronickel tubes.

T = Temperature Rise, Degree F

P = Pressure Drop Ft. thru heat exchanger

GPM = Gallons/Minute, Flow Rate

SHL = System Head Loss, Ft.

MPS = Minimum Pipe Size, NPT

System head loss is based on the heater and tank placed no more than 5 feet apart and 25 feet equivalent length of pipe
and fittings.

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Summary of Contents for 122-322

Page 1: ...oflife Refertothismanual Installationandservicemustbeperformedbyaqualified installer serviceagencyorthegassupplier FORYOURSAFETY WHATTODOIFYOUSMELLGAS Donottrytolightanyappliance Donottouchanyelectricalswitch donotuseanyphoneinyourbuilding Immediatelycallyourgassupplierfromaneighbor sphone Followthegassupplier sinstructions Ifyoucannotreachyourgassupplier callthefiredepartment Thismanualshouldbema...

Page 2: ...L POWER CONNECTIONS 24 SECTION J VENTING CONNECTIONS 28 J 1 NaturalDraftVerticalVenting 31 J 2 HorizontalThru WallVenting 33 J 3 HorizontalThru WallDirectVenting 35 J 4 VerticalDirectVenting CombustionAir 37 J 5 OutdoorInstallation 38 SECTION K CONTROLS 41 WIRINGDIAGRAM 42 SECTION L GENERALSAFETYPRECAUTIONS 43 SECTION M PRE START UP 44 SECTION N HI DELTAINITIALSTART UP 46 SECTION O POST START UPCH...

Page 3: ...round the heater free of combustible materials gasoline and other flammable liquids and vapors 2 Heater should never be covered or have any blockage to the flow of fresh air to the heater WARNING Risk of electrical shock More than one 1 disconnect switch may be required to de energize the equipment before servicing CAUTION Operation of this heater on low temperature systems requires special piping...

Page 4: ...this manual does not answer please contact the factory or your local Raypak representative ThankyouforpurchasingaRaypakproduct Wehopeyouwillbesatisfiedwiththehighqualityanddurabilityofourequipment PRODUCT RECEIPT On receipt of your product it is suggested that you visually check for external damage to the shipping crate If the crate is damaged makeanotetothateffectontheBillofLadingwhensigningforth...

Page 5: ...rs CAN 31 latest edition Gas FiredPoolHeaters ANSIZ21 56 CSA4 7 latestedition Gas Water Heaters ANSI Z21 10 3 CSA 4 3 latest edition AllRaypakheatersareNationalBoardApproved designcertifiedandtestedbytheCSAInternationalforU S A andCanada Each heater is constructed in accordance with Section IV of the American Society of Mechanical Engineers ASME Heater Pressure Vessel Code and bears the ASME stamp...

Page 6: ...HI DELTA COMPONENT LOCATION 6 BACK LEFT SIDE FRONT See detail page 7 See detail page 7 ...

Page 7: ...7 General Information GasValve Detail Air Shutter Adjustment ...

Page 8: ...ace but must NEVER be installed on carpeting Gas fueled equipment installed in enclosed parking garages must be located at least 18 in above the floor CAUTION The heater should be located in an area where water leakage will not result in damage to the area adjacent to the appliance or to the structure When such locations cannot be avoided it is recommended that a suitable catch pan adequately drai...

Page 9: ...nt structural construction around the heater However for ease of servicing we recommend a clearance of at least 24 in front and at least 18 on the water connection side This will enable the heater to be serviced in its installed location that is without movement or removal of the heater Clearances less than minimum may require removal of the heater to service either the heat exchanger or the burne...

Page 10: ...en in the area under the overhang Roof water drainage must be diverted away from heaters installed under overhangs TABLE 2 OUTDOOR INSTALLATION MINIMUM CLEARANCES HeaterModel Heater Side 120 322 Rear 12 Right 36 Left 36 Top Unobstructed Vent N A These clearances required where the outdoor vent cap is used If installing the heater outdoors with a vent stack the indoor clearances may be used 10 FRON...

Page 11: ...rection b All Air from Outdoors The confined space shall communicate with the outdoors in accordance with methods 1 or 2 The minimum dimension of air openings shall not be less than 3 in 8 cm in any direction Where ducts are used they shall be of the same cross sectional area as the free area of the openings to which they connect 1 Two permanent openings one commencing within 12in 30 cm of the top...

Page 12: ...neither more than 18 in 450 mm nor less than 6 in 150 mm above the floor level The duct can also Goose Neck through the roof The duct is preferred straight down 18 from floor but do not place near piping This air supply opening requirement shall be in addition to the air opening for ventilation air required in 1 3 For heaters not using a barometric damper in the ventsystem and when air supply is p...

Page 13: ...aypak does recommend hydrostatically testing the piping connections to the heater and the rest of the system prior to operation This is particularly true for hydronic systems using expensive glycol based antifreeze Raypak recommends conducting the hydro static test before connecting gas piping or electrical supply Leaks must be repaired at once to prevent damage to the heater NEVER use petroleum b...

Page 14: ...o the chilled medium is piped in parallel with the boiler with appropriate valves to prevent the chilled medium from entering the boiler The boiler piping system of a hot water heating boiler connected to heating coils located in air handling units where they may be exposed to circulating refrigerated air must be equipped with flow control valves or other automatic means to prevent gravity circula...

Page 15: ...SINGLEBOILER LOWTEMPERATUREAPPLICATION HEATPUMP PRIMARY SECONDARYPIPING DUALBOILERPRIMARY SECONDARYPIPING 15 ...

Page 16: ...ater Hardness is specified as grains per gallon TABLEF 1 DOMESTICWATERHEATER FLOWRATEREQUIREMENTS Must use optional Cupronickel tubes T Temperature Rise Degree F P Pressure Drop Ft thru heat exchanger GPM Gallons Minute Flow Rate SHL System Head Loss Ft MPS Minimum Pipe Size NPT System head loss is based on the heater and tank placed no more than 5 feet apart and 25 feet equivalent length of pipe ...

Page 17: ...17 SINGLE HEATER DOMESTIC HOTWATER WITH ONE STORAGE TANK ...

Page 18: ...ICALFEEDERS All chemicals must be introduced and completely diluted into the pool or spa water before being circulated through the heater Do not place chlorine tablets or bromine sticks in the skimmer High chemical concentrations will result when the pump is not running i e overnight Chlorinators must feed downstream of the heater and have an anti siphoning device to prevent chemical backup into t...

Page 19: ...ss than 1 2 PSIG Relieve test pressure in the gas supply line before reconnecting the heater and its manual shut off valve to the gas supplyline FAILURETOFOLLOWTHISPROCEDUREMAYDAMAGETHEGASVALVES Over pressurized gas valves are not covered by warranty The heater and its gas connections shall be leak tested before placing the appliance in operation Use soapy water for leak test DO NOT use open flame...

Page 20: ...0 5 W C for Propane gas manifold pressure The pressure at the gas valve outlet tap measured with a manometer while in operation should be 3 5 0 1 W C for Natural gas and 10 5 0 1 W C for Propane gas If an adjustment is needed turn the adjustment screw clockwise to increase pressure or counter clockwise to decrease pressure 20 ...

Page 21: ...age to the heater and pump Install a separate disconnect means for each load Use appropriate sized wire as defined by NEC CSAand or local code All primary wiring should be 125 of minimum rating It is strongly recommended that all individually powered control modules and the heater should be supplied from the same power source SURGE PROTECTION Microprocessor based and solid state controls are vulne...

Page 22: ...ponents damaged by improper electrical installation are not covered by warranty 4 Provide an external surge suppressor capable of maintaining system integrity 5 Provide overload protection and a disconnect means for equipment serviceability as required by local and state code 6 Install heater controls thermostats or building management systems in accordance with the applicable manufacturer s instr...

Page 23: ... terminal block in the heater Stage 1 of the heater to stage 1 of the control Stage 2 of the heater to stage 2 of the control and so on Set the operating control at the setpoint in which you want the heater to maintain Ensure that the sensing bulb of the control is at the point in the system that will best maintain the temperature you want For example when you are heating a tank of water you want ...

Page 24: ... positive vent pressure and with a vent gas temperature that avoids excessive condensate production in the vent Category IV A heater which operates with a positive vent pressure and with a vent gas temperature that may cause excessive condensate production in the vent See Table J 1 for appliance category requirements for the Hi Delta Note For additional information on appliance categorization see ...

Page 25: ...Category Determination for Venting Purpose and Venting Arrangement 25 TABLE J 1 As defined in the latest edition of the NFGC or in Canada the B149 1 and 2 ...

Page 26: ...nsate is a problem with Category I and III appliances this provision shall also apply f Locate and guard vent termination to prevent accidental contact by people or pets g DO NOT terminate vent in window well stairwell alcove courtyard or other recessed area unless previously approved by local authority h DO NOT terminate above any door window or gravity air intake Condensate can freeze causing ic...

Page 27: ...e latest edition of NFGC or in Canada B149 1 and 2 Installation Code for Gas Burning Appliances and Equipment or applicable provisions of local building codes 27 Canada Installations Refer to latest edition of CAN CGA B149 1 and 2 A vent shall not terminate a Directly above a paved sidewalk or driveway which is located between two single family dwellings and serves both dwellings b Less than 7 ft ...

Page 28: ...CTION J 1 Natural Draft Vertical Venting Category I NATURALDRAFTVERTICALVENT NOTE Vent lengths are based on a lateral length of 2 feet Refer to the latest edition of the NFGC for further details ANSI Z223 1 ...

Page 29: ...to prevent physical damage or separation of joints Natural Draft Vertical Vent Termination The vent terminal should be vertical and should terminate outside the building at least two 2 feet above the highest point of the roof that is within 10 feet The vent cap should have a minimum clearance of four 4 feet horizontally from and in no case above or below unless a four 4 foot horizontal distance is...

Page 30: ...ation the appliances being inspected Follow the manufacturers instructions for lighting each appli ance Adjust thermostat so appliance will operate continuously e Test for spillage at the drafthood relief opening after 5 minutes of main burner operation Use the flame of a match or candle or smoke from a cigarette cigar or pipe toilet paper trick For the Hi Delta check the pressure at a pressure ta...

Page 31: ...ations utilize the heater mounted blower to vent the combustion products to the outdoors Combustion air is taken from inside the room and the vent is installed horizontally through the wall to the outdoors Adequate combustion and ventilation air must be supplied to the mechanical room in accordance with the NFGC or in Canada the B149 1 and 2 Installation Code 31 Fig 9402 ...

Page 32: ...ngth of the horizontal run For appliances installed in extreme cold climate it is recommended that a The vent be installed with a slight upward slope of not more than 1 4 per foot of horizontal run to the vent terminal In this case an approved condensate trap must be installed per applicable codes b The vent be insulated through the length of the horizontal run Horizontal Thru wall Direct Vent Ter...

Page 33: ...DIRECT VENT Horizontal Thru wall Venting Category III HORIZONTALTHRU WALLVENTINGTABLE 33 SECTION J 3 ...

Page 34: ... vent terminal In this case an approved condensate trap must be installed per applicable codes b The vent be insulated through the length of the horizontal run Horizontal Thru wall Direct Vent Termination The flue exhaust direct vent cap MUST be mounted on the exterior of the building The direct vent cap cannot be installed in a well or below grade The direct vent cap must be installed at least on...

Page 35: ...DIRECT VENT Vertical Venting Category I VERTICALVENTINGTABLE 35 SECTION J 4 ...

Page 36: ...l portions of the vent shall also be supported for the design and weight of the material employed to maintain clearances and to prevent physical damage or separation of joints Vertical Direct Vent Termination The exhaust vent terminal should be vertical and should terminate outside the building at least two 2 feet above the highest point of the roof within 10 feet The vent cap should have a minimu...

Page 37: ...st never be obstructed in any way and minimum clearances must be observed to prevent restriction of combustion and ventilation air Keep area clear and free of combustible and flammable materials c Do not locate adjacent to any window door walkway or gravity air intake The vent must be located a minimum of four 4 feet horizontally or four 4 feet below or one 1 foot above such areas d Install above ...

Page 38: ...r death WARNING Turn off the power to the heater before installation adjustment or service of the heater controls Failure to do so may result in heater malfunction property damage personal injury or death CAUTION This appliance has provisions to be connected to more than one 1 supply source To reduce the risk of electric shock disconnect all such connections before servicing CAUTION Risk of electr...

Page 39: ...s powered and pre purged Unit performs its own safety check and opens the main valve only after the igniter is proven to be capable of ignition HIGHLIMIT MANUALRESET The heater is equipped with a manual reset high limit temperature device Push the reset button and adjust the setting to 30 F or 40 F above desired operating temperature FLOW SWITCH Dual purpose control shuts off heater in case of pum...

Page 40: ...matically shuts down the burner whenever water level drops below the level of the sensing probe A 3 second time delay prevents premature lockout due to temporary conditions such as power fluctuations or air pockets Fig J 5 LOW WATER CUT OFF 40 Drw 8996 1 ...

Page 41: ...41 WIRE DIAGRAM MODELS 122 322 Reference Drawing Number M152564C ...

Page 42: ...d injury and may be used as a guide in determining the safest water temperature for your applications Temperature Time to Produce Serious Burn Temperature Time to Produce Serious Burn 120 F More than 5 minutes 140 F Less than 5 seconds 125 F 1 1 2 to 2 minutes 145 F Less than 3 seconds 130 F About 30 seconds 150 F About 1 1 2 seconds 135 F About 10 seconds 155 F About 1 second Table courtesy of Th...

Page 43: ...TING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor 3 WHATTO DO IFYOU SMELLGAS Do not try to light any appliance Do not touch any electrical switch do not use any telephone in your building Immediately call your gas supplier from a neighbor s telephone Follow the gas supplier s instructions If you can...

Page 44: ...ntrol damage or failure 2 2 Attach Manometers to Measure Pressures Attach 24 scale manometer to the first main gas shut off valve pressure tapping Attach one 12 scale manometer to the manifold gas pressure tapping See gas valve detail on page 7 Attach one 12 scale manometer to Pull rubber tube from air pressure switch off the aluminum tubing and connect the manometer using a tee TurnOffMainGasValv...

Page 45: ...lace the manifold adjustment screw cap on the gas valve Your Hi Delta is tuned in 3 3 Safety Inspection Replace main gas manifold adjustment screw cap Check all thermostats and high limit settings During the following safety checks leave manometers hooked up check and record If other gas fired equipment are in the room and on same gas main check all pressures on the Hi Delta with all other equipme...

Page 46: ...mit control above heater water temperature and burner should reignite after pre purge time delay 9 Test ignition system safety device Turn on manual gas valve Turn power on Set thermostat to call for heat When the unit is in operation Disconnect combustion air blower pressure switch burner should go off immediately Wait 5 minutes Reconnect combustion air pressure switch burner should reignite afte...

Page 47: ... The igniter will glow after the pre purge time delay 15 seconds After igniter reaches temperature 45 seconds the main valve will open System will try for ignition three 3 times If ignition is not sensed lockout will commence 10 If the appliance will not operate follow the instruction To Turn Off Gas To Appliance and call your service technician or gas supplier 11 Replace access panel TOTURNOFFGAS...

Page 48: ...uctions 9 Follow oil lubricating instructions on circulator Over oiling will damage circulator Water lubricated circulators do not need oiling 10 To avoid potential of severe burn DO NOT REST HANDS ON OR GRASPPIPES Use a light touch return piping will heat up quickly 11 Check blower and blower motor Clean and oil as necessary 12 Check for piping leaks around circulators relief valves and other fit...

Page 49: ...d metallic vent pipe In extremely contaminated area this may also experience deterioration Products causing contaminated combustion air spray cans containing chloro fluorocarbons permanent wave solutions chlorinated waxes cleaners chlorine based swimming pool chemicals calcium chloride used for thawing sodium chloride used for water softening refrigerant leaks paint or varnish removers hydrochlori...

Page 50: ...Fig 241093 50 ...

Page 51: ...51 HEATEXCHANGERDETAIL ...

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Page 55: ...s prepaid and all applicable warranty conditions found satisfied The replacement part will be warranted for only the unexpired portion of the original warranty Raypak makes no warranty whatsoever on parts not manufactured by it but Raypak will apply any such warranty as may be provided to it by the parts manufacturer TO MAKE WARRANTY CLAIM Promptly notify the original installer supplying the model...

Page 56: ...pak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Fax 800 872 9725 Raypak Canada LTD 2805 Slough Street Mississauga Ontario Canada L4T 1G2 905 677 7999 Fax 905 677 8036 Litho in U S A www raypak com ...

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