Rheem RAYPAK MVB 1104 Installation & Operating Instructions Manual Download Page 41 | Manualshive

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41

WIRING DIAGRAM

- Models P & WHP

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Summary of Contents for RAYPAK MVB 1104

Page 1: ...s supplier call the fire department WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal injury exposure to hazardous materials or loss of life...

Page 2: ...Fig 21 on page 22 Figs 22 28 on pages 25 30 Table N on page 29 Fig 35 on page 32 Mode 8 description on page 33 minor text changes on pages 42 43 and 46 Troubleshooting chart on page 48 Additions Fig 2...

Page 3: ...ection 22 Venting 22 Venting Installation Tips 24 Venting Configurations 24 Engineered Vent Systems 27 Outdoor Installation 29 Controls 30 Heater Sequence of Operation 37 WIRING DIAGRAMS 40 START UP 4...

Page 4: ...er should never be covered or have any blockage to the flow of fresh air to the heater WARNING CALIFORNIA PROPOSITION 65 This product contains chemicals known to the State of California to cause cance...

Page 5: ...n number and heater serial number are found on the heater rating plate located on the upper rear jacket panel of the heater The model number will have the form H7 2004 or similar depend ing on the hea...

Page 6: ...nt Locations Top Fig 3 Component Locations Rear Model No MBTUH Input Water Conn NPT Gas Conn NPT Vent Size in Max Min N P Flue Intake 504 500 350 2 1 1 8 6 754 750 525 2 1 1 10 6 1104 1100 770 2 1 2 1...

Page 7: ...after the heater s burner has shut off To determine the water temperature being delivered turn on a hot water faucet and place a thermometer in the hot water stream and read the thermometer NOTE When...

Page 8: ...TALLATION Installation Codes Installations must follow these codes Local state provincial and national codes laws regulations and ordinances National Fuel Gas Code ANSI Z223 1 NFPA 54 latest edition N...

Page 9: ...er must be supplied with sufficient quantities of non contaminated air to support proper combustion and equipment ventilation Combustion air can be sup plied via conventional means where combustion ai...

Page 10: ...side of opening 1 ft 30 cm above opening 3 ft 91 cm K Clearance to mechanical air supply inlet 3 ft 91 cm above if within 10 ft 3m horizontally 6 ft 1 83m L Clearance above paved sidewalk or paved dr...

Page 11: ...ould be removed before attaching any air duct to the heater The screws and duct connection point must be sealed with RTV not supplied TruSeal is generally used when dam aging contaminants are present...

Page 12: ...ns 2 For heaters using a barometric damper in the vent system there shall be a permanent air supply opening s having a cross section area of not less than 1 in 2 per 7 000 BTUH 320 mm2 per kW up to an...

Page 13: ...ondary boiler piping Raypak strong ly recommends that thermometer s be placed into the heater piping next to the in out header to facilitate tem perature adjustment Inlet water temperatures below 120...

Page 14: ...emperature range of no more than 10 F 5 C a permanent manual bypass can be employed and manually adjusted to achieve an inlet temperature of 120 F 49 C or higher as adjusted at the minimum temperature...

Page 15: ...oling cycle It is highly recommend ed that the piping be insulated Air Separation Expansion Tank All heaters should be equipped with a properly sized expansion tank and air separator fitting as shown...

Page 16: ...system must be utilized Caution For scale free operation with Hard Water 16 25 grains per gallon of total hardness the operating control must NOT be set higher than 130 F For higher than 130 F operati...

Page 17: ...er operation in a pool heating application Use the following instruc tions to set the manual bypass CAUTION Power to the heater should be interlocked with the main system pump to make sure the heater...

Page 18: ...installed outdoors as pool heaters in freezing climate areas should be shut down for the winter To shut down the heater turn off manual main gas valve and main gas shut off Close isolation valves Dra...

Page 19: ...ring any pressure testing of the gas supply system at test pressures in excess of 1 2 psi 3 45 kPa The heater must be isolated from the gas supply pip ing system by closing the upstream manual shut of...

Page 20: ...d 3 as noted in Fig 18 All low voltage wiring including sensors interlocks enable disable and various options are wired into terminals 1 20 on the front wiring panel as noted in Fig 18 When connecting...

Page 21: ...ot be used as the earth ground 21 Field Connected Controllers It is strongly recommended that all individually pow ered control modules and the heater should be supplied from the same power source Che...

Page 22: ...per installation of flue venting is critical for the safe and efficient operation of the heater NOTE For additional information on appliance categorization see appropriate ANSI Z21 Standard and the NF...

Page 23: ...ed condensing appli ances shall not terminate over public walkways or over an area where condensate or vapor could create a nuisance or hazard or could be detrimen tal to the operation of regulators r...

Page 24: ...earance from the wall 8 Terminate vent at least 1 ft above grade including normal snow line 9 Multiple direct vent installations require a 4 ft clearance between the ends of vent caps located on the s...

Page 25: ...er to the vent terminal The horizontal portions of the vent shall also be supported for the design and weight of the material employed to maintain clearances and to prevent phys ical damage or separat...

Page 26: ...nting system for proper size and horizontal pitch and verify there is no block age restriction leakage corrosion or other unsafe condition 3 Insofar as is practical close all building doors and window...

Page 27: ...appropriate tables in Ap pendix G in the NFGC U S or B149 Canada Engineered Vent Systems Table M provides boiler discharge vent volumes of flue products at full fire for the calculation of appropriat...

Page 28: ...by a nationally recognized test agency The connection from the appliance flue to the stack must be as direct as possible and should be the same size or larger than the vent outlet WARNING No substitut...

Page 29: ...s dimension is critical to the correct operation of the heater and venting system and reduces the chance of blockage from snow The vent cap must have a minimum 3 ft vertical clearance from the air inl...

Page 30: ...way or gravity air intake The vent must be located a minimum of 4 ft horizontally from such areas 4 Install above grade level and above normal snow levels 5 Vent terminal must be at least 3 ft above...

Page 31: ...e and 5 F below the set point For systems with more than 4 1 turndown the recom mended location of the system target sensor is in the system supply loop downstream of the outlet piping from the heater...

Page 32: ...de 2 However the target temperature is based on outdoor reset See Fig 34 Mode 6 Not supported Designed for an external input signal with primary piping The external input sig nal can be provided from...

Page 33: ...stor NOTE The defined terms are not active in all modes of control operation BOIL ON Accumulated runtime of heater up to 999 hours then resets to 0 BOIL OUT Actual heater outlet water temperature BOIL...

Page 34: ...Outdr Start 5 70 F 35 to 85 F Outdr Design 5 10 F 60 to 32 F Boil Start 5 135 F 35 to 150 F Boil Dsgn 5 180 F 120 to 220 F WWSD 5 70 F 35 to 100 F Units All F F or C Mode N A 2 2 3 5 7 8 External Inpu...

Page 35: ...at A 4 20 mA signal can be converted to a 2 10 VDC signal by Water Heater WH1 Item Modes Default Setting Range Boil Target 2 140 F OFF 70 to 190 F 3 7 160 F OFF 70 to 190 F Boil Max 2 3 6 7 180 F OFF...

Page 36: ...second The 36 menu name ADJUST will be displayed in the menu field The menu will automatically revert back to the view menu after 20 seconds of keyboard inactivity Then scroll to the desired item usi...

Page 37: ...for ignition is fixed at 50 input The heater is allowed to modulate once flame is proven and the firing rate will adjust to match the load based on the configuration and set tings of the temperature c...

Page 38: ...e gas valve and is accessible through the remov able access panels on the rear of the heater to reset the gas pressure switch as necessary It is used to ensure that sufficient gas pressure is present...

Page 39: ...tch automatically shuts down the heater if gas sup ply drops below the factory setting of 3 0 in WC for natural gas or propane gas The optional high gas pressure switch connection mounts down stream o...

Page 40: ...40 WIRING DIAGRAM Models H WH All manuals and user guides at all guides com...

Page 41: ...41 WIRING DIAGRAM Models P WHP All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 42: ...witch do not use any telephone in your building Immediately call your gas supplier from a neigh bor s telephone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fi...

Page 43: ...t panel to check igniter operation Gas valve should open in 45 60 seconds 3 The heater ignites at 50 of full rate as indicated on the LCD display of the temperature control located in the upper right...

Page 44: ...is set to 3 0 in WC for both natural gas and propane gas Follow Up Safety checks must be recorded as performed Turn heater on After main burner ignition 1 Check manometer for proper readings 2 Cycle...

Page 45: ...est point A blee dle valve to the test point B bleedle valve and open the upstream manual gas valve Make sure that test point A B bleedle valves have been opened so as to allow gas to flow This will b...

Page 46: ...view all instructions shipped with this heater with owner or maintenance person return to enve lope and give to owner or place the instructions inside front panel on heater OPERATION Lighting Instruct...

Page 47: ...he first fault displayed the last 16 faults are stored in the his tory on a rolling basis There is no time or date stamp associated with these faults 4 When the history of faults has been exhausted pu...

Page 48: ...r line voltage YES Does the power switch provide power to the control panel Unit is in standby mode Reattach NO NO YES YES NO Is diagnostic board indicating open safeties Check and correct power conne...

Page 49: ...rected to appropriate con densate management system or drain as required by local codes 3 Check that area is free from combustible materi als gasoline and other flammable vapors and liquids 4 Check ai...

Page 50: ...e interlocks if equipped See Safety Inspection on page 44 Semi Annually 1 Recalibrate all indicating and recording gauges 2 Check flame failure detection system components 3 Check firing rate control...

Page 51: ...ing AL29 4C stainless steel vent pipe which is more corrosion resistant than standard metallic vent pipe In extremely contaminated ar eas this may also experience deterioration Products causing contam...

Page 52: ...d gas fueled equipment installed in every dwelling building or structure used in whole or in part for residential purposes including those owned or operated by the Commonwealth and where the side wall...

Page 53: ...aypak will furnish a replacement for any failed part The failed part must first be returned to Raypak if requested with transportation charges prepaid and all applicable warranty conditions found sati...

Page 54: ...Warranty Raypak will furnish a replacement for any failed part The failed part must first be returned to Raypak if requested with transportation charges prepaid and all applicable warranty conditions...

Page 55: ...utoff _______________Test Category _________ sketch vent on reverse side Number of Tanks and Size Qty____ _______Gallons Vent Material __________________ Plumbing Size _______________ Vent Termination...

Page 56: ...www raypak com Raypak Inc 2151 Eastman Avenue Oxnard CA 93030 805 278 5300 Fax 805 278 5468 Litho in U S A All manuals and user guides at all guides com a l l g u i d e s c o m...

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