Rinnai 37AHB SERIES Installation, Operation And Maintenance Manual Download Page 22

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Rinnai Corporation Hydronic Furnace (37AHB) Manual

Installation

Figure 22:

Circulating Pump 115V Troubleshooting - Flow Sensor (FS) Configuration

FINISH

YES

CHECK

FOR LOOSE OR BROKEN

WIRES

CHECK

VOLTS ACROSS 'PUMP'

CONNECTIONS ON PCB

VAC =

115V +/-

YES

PROBLEM(S) WITH 24V TO PCB

GO TO

24V

TROUBLESHOOTING CHART

PUMP AMP

DRAW NORMAL

CHECK CAPACITOR;

DEFECTIVE

REPLACE

COMPONENT

AND RE-CHECK

AMP DRAW

YES

RETURN TO

START

PUMP AMP

DRAW NORMAL

CHECK PUMP

MOTOR;

DEFECTIVE

REPLACE

COMPONENT

AND RE-CHECK

AMP DRAW

CONNECT PUMP DIRECTLY TO

115 VAC POWER SUPPLY

PUMP MOTOR

ENERGIZED

(1) RECTIFY

WIRING PROBLEM(S)

(2) CHECK MOTOR AND

CAPACITOR;

IF DEFECTIVE,

REPLACE

FAULTY COMPONENT(S)

RETURN TO

START

YES

CONTACT

TECH.

SUPPORT

RECONNECT WIRES

AND

CONFIRM THAT WIRING IS AS

PER WIRING DIAGRAMS

SYSTEM

WORKING

SYSTEM

WORKING

ADJUST THERMOSTAT

SET

TEMPERATURE HIGHER THAN

ROOM TEMPERATURE

PUMP

ENERGIZED

YES

CHECK CAPACITOR;

DEFECTIVE,

REPLACE

COMPONENT

AND RE-CHECK

AMP DRAW

PUMP AMP

DRAW NORMAL

YES

REPLACE

PUMP

MOTOR

AND

RETURN TO

START

WITH DOOR SWITCH CLOSED

(SET SYSTEM IN HEATING MODE

-CALL FOR HEAT)

START

IS 'LED' ON

RAPID 'LED' FLASH

GO TO

RFH START-UP &

'LED' TROUBLESHOOTING

STEADY 'LED' FLASH

YES

PUMP

ENERGIZED

YES

PUMP AMP

DRAW NORMAL

YES

Summary of Contents for 37AHB SERIES

Page 1: ...h Options 17 Thermostat Installation 17 18 Start Up Procedure 19 Troubleshooting 20 23 Sequence of Operation 24 26 Maintenance 26 27 Selection Guide 27 28 Air Distribution Guide 28 29 Quick Reference Duct Sizing Chart 30 Hydronic Furnace s Specifications 31 Air Delivery and Performance Data 32 51 Accessories 59 Wiring Diagrams 60 62 Parts List 63 64 Limited Warranty 65 66 To register your hydronic...

Page 2: ...all be immediately available in the work area and shall be maintained in a state of readiness for instant use Read these installation instructions carefully and adhere to all WARNINGS and CAUTIONS Consult local building codes Occupational Safety Health Administration OSHA and National Electrical Code NEC for special requirements Improper installation modification service maintenance or use of Hydr...

Page 3: ... codes are not applicable the installation must comply with the national codes and any and all authorities having jurisdiction Overview of the Rinnai Hydronic Furnace RHF The following is a suggested list of codes and standards for the United States and Canada General Installation Installation of Air Conditioning and Ventilating Systems NFPA 91 latest edition Duct Systems Sheet Metal and Air Condi...

Page 4: ...4 355 6 18 457 2 12 304 8 10 1 2 266 7 19 482 6 37AHB06012KA5 17 1 2 444 5 18 457 2 16 406 4 16 11 16 423 9 19 1 4 489 0 37AHB07514KA5 21 533 4 18 457 2 20 508 18 11 16 474 7 19 1 2 495 3 37AHB09016KA5 24 1 2 622 3 18 457 2 24 609 6 21 1 8 536 6 19 482 6 DIMENSIONS Figure 1 Water In Water Out 7 8 Dia KO Supply Power Wire Entry Typ for both sides 7 8 Dia KO Thermostat Wire Entry Typ for both sides ...

Page 5: ...revent loss or damage leave all parts in original packages until installation Installation Figure 2 Minimum Clearance to Combustible Construction The 37AHB Series Hydronic Furnace needs to be installed and commissioned by a knowledgeable qualified professional NOTES 1 This Furnace is approved for up flow down flow and horizontal configurations 2 Clearance arrows do not change with Hydronic Furnace...

Page 6: ...cations and assembly are necessary if units are to be installed in an application that requires side return air inlet arrangement For instructions on required modifications and assembly refer to Figures 3 and 4 Installation Figure 3 Modification of Unit to Accommodate Side Filter Rack Installation USE EXISTING SCREW HOLE TO LOCATE FILTER RACK 17 3 4 2 3 16 1 8 21 11 16 3 8 17 15 16 Figure 4 Side F...

Page 7: ...y to install in the down flow position without assembly or modifications when configured for bottom return air inlet installation If side return air inlet installation is desired refer to Figures 3 and 4 Horizontal Left and Right Installations Without Cased Coil If a cased coil is NOT being installed the cabinet can be placed on either side for horizontal airflow as shipped when configured for bot...

Page 8: ...ttom of the cabinet Closet return air opening can be on the front in closet door side thru the wall or a combination of both providing there is clearance on the sides between unit s cabinet and closet Refer to ACCA Manual D or SMACNA for sizing and free area recommendations NOTE Local codes may limit application of systems without a ducted return to single story dwellings Figure 6 Horizontal Unit ...

Page 9: ... flange on the unit s discharge side Secure the duct to the flange with proper fasteners for the type of duct used Support the duct independently Use flexible connectors if desired between the ductwork and the unit to prevent transmission of vibration Use insulation with vapor barrier for ductwork passing Attachment Methods Using Straps Method 1 Use 4 8 x 3 4 sheet metal screws for each strap Stra...

Page 10: ...ng soldering to avoid debris or solder from lodging in piping system Mechanical Joining of Tubing Where used refer to the respective mechanical system manufacturer s installation instructions Tubing Insulation Any tube conveying fluid at a temperature greater than that of the surrounding air releases heat Insulate all accessible hot water lines and associated valves with material such as expanded ...

Page 11: ... average flow velocity should be between 2 and 4 feet per second At water flow velocities of approximately 2 feet per second flowing water will carry air bubbles along a vertical pipe Average flow velocities of 2 feet per second or higher can draw along air bubbles in a downward flow At the above stated velocities air bubbles shall be routed to an air separator where they can be collected and disc...

Page 12: ...r tubing 4 ft 9 ft 15 ft 5 ft 10 ft 3 ft 3 ft 3 ft 3 ft 3 ft 3 ft 12 ft 10 ft FS PROCEDURE FOR CALCULATING THE TOTAL EQUIVALENT LENGTH OF PIPE Given piping assembly as shown in Figure 10 below what is the total equivalent length of the system First determine the total straight pipe lengths next refer to table 2 to determine the equivalent straight pipe length for each fitting shown Add together th...

Page 13: ...ded schematic diagram shown in Figure 11 the following purge and priming procedure applies PURGING AND PRIMING THE SYSTEM The following procedure describes how the Rinnai system may be piped to eliminate the need for a purge cart to fill the system and remove entrapped air bubbles STEP 1 CLOSE the air separator venting valve STEP 2 CLOSE ball valve 3 BV3 STEP 3 OPEN drain valve 3 DV3 to which a ho...

Page 14: ...t switch to be in clear site accessible and in close proximity to the unit Correct polarity MUST be maintained for 115 V wiring If polarity is incorrect unit will NOT operate Control Box Relocation The Control Box is factory installed in the blower compartment upper left corner see Figure 12 if factory location of Control Box is suitable proceed to next section To relocate the Control Box to an al...

Page 15: ... Installation Failure to follow this warning could result in a fire Do not use aluminum wire between the Hydronic Furnace and the disconnect switch USE COPPER WIRE ONLY WARNING Figure 13 Field Wiring Diagram NOTES 1 Connect Y1 terminal as shown for proper operation 2 Rinnai thermostats require a C terminal connection as shown 3 If any of the original wire as supplied must be replaced use the same ...

Page 16: ... shunt position ensure that the unit s power is turned off Wire Gauge Maximum Distance feet 20 gauge 45 18 gauge 60 16 gauge 100 14 gauge 160 12 gauge 250 System Low Voltage Wiring Diagrams NOTE Local codes may require thermostat wiring to be routed through conduit or raceways In such instances splices can be made inside the Hydronic Furnace All wiring must be NEC Class l and must be separated fro...

Page 17: ...Heat Pump Model The Standard Model HP thermostat is not power stealing and MUST have both R and C wires connected to operate properly This thermostat uses a green LED to indicate auxiliary emergency heat operation Installation Thermostat should be mounted approximately 5 ft 1 5 m from floor close to or in a frequently used room preferably on an inside partitioning wall on a section of wall without...

Page 18: ...consist of electrical wire or metal conduit when installed in accordance with existing electrical codes WARNING THERMOSTAT WIRING DIAGRAMS Installation FIRST STAGE HEAT COOL AUX HEATING FAN 24VAC HOT 24 VAC COMMON SINGLE STAGE HYDRONIC FURNACE SINGLE SPEED CONDENSING UNIT HEAT COOL COOL ONLY THERMOSTATS Y1 W G R C Y1 Y2 W G O R C Y1 C Single Stage Hydronic Furnace w Single Stage A Figure 16 FIRST ...

Page 19: ...eowner START UP PROCEDURE COOLING SYSTEM Refer to field supplied evaporator coil and outdoor unit manufacturer s Installation Instructions for system hook up start up instructions and refrigerant charging method details TROUBLESHOOTING BLOWER AND OR PUMP MOTOR AND CONTROLS If blower and or pump motor does not run Turn off power and check the following 1 Check that door switch is in the CLOSED posi...

Page 20: ...n this manual NO YES IS LED ON WITH DOOR SWITCH CLOSED SET SYSTEM IN HEATING MODE CALL FOR HEAT YES NO START SYSTEM PURGED CHECK VOLTAGE ACROSS L1 AND L2 RETURN TO PURGE PRIME STEPS IS LED RAPIDLY FLASHING STEADY LED FLASH NORMAL OPERATION OR STAND BY MODE AWAITING THERMOSTAT CAL L YES NO DOMESTIC HOT WATER DEMAND PRESENT SYSTEM ON HOLD SEARCH MODE IS LED RAPID FLASH CONSISTENT YES INCONSISTENT RA...

Page 21: ...S GO TO CIRCULATING PUMP 115 v TROUBLESHOOTING YES FINISH YES NO CHECK FOR LOOSE OR BROKEN WIRES CHECK VOLTS ACROSS FAN CONNECTIONS ON PCB COOL HI AND N4 VAC 115V NO YES PROBLEM S WITH 24V TO PCB GO TO 24V TROUBLESHOOTING CHART FAN AMP DRAW NORMAL NO CHECK CAPACITOR IF DEFECTIVE REPLACE COMPONENT AND RE CHECK AMP DRAW YES RETURN TO START NO FAN AMP DRAW NORMAL CHECK FAN MOTOR IF DEFECTIVE REPLACE ...

Page 22: ...IRECTLY TO 115 VAC POWER SUPPLY PUMP MOTOR ENERGIZED 1 RECTIFY WIRING PROBLEM S 2 CHECK MOTOR AND CAPACITOR IF DEFECTIVE REPLACE FAULTY COMPONENT S RETURN TO START NO YES YES YES CONTACT TECH SUPPORT RECONNECT WIRES AND CONFIRM THAT WIRING IS AS PER WIRING DIAGRAMS SYSTEM WORKING SYSTEM WORKING ADJUST THERMOSTAT SET TEMPERATURE HIGHER THAN ROOM TEMPERATURE PUMP ENERGIZED YES NO CHECK CAPACITOR IF ...

Page 23: ...OSED SET SYSTEM IN HEATING MODE CALL FOR HEAT START IS LED ON YES NO PRI VAC 115V SEC VAC 24V YES NO GO TOHYDRONIC FURNACE START UP AND LED TROUBLESHOOTING VAC 24V YES CHECK 3 AMP FUSE IS FUSE INTACT 1 CHECK FORWIRING PROBLEM S 2 CHECK TRANSFORMER IF DEFECTIVE REPLACE FAULTY COMPONENT 1 CHECK FOR WIRING PROBLEM S 2 CHECK FUSE IF DEFECTIVE REPLACE FAULTY COMPONENT IS THERE CONTINUITYAT T STAT CHECK...

Page 24: ...while a call for heat exists the cooling off delay is canceled and the blower operation reverts to the heat cycle Single Stage Heat Pump HP Cooling Demand When the thermostat calls for cooling Y and O the control waits for the 1 second cooling on delay period and energizes the COOL_HI blower tap When the thermostat removes the call for cooling Y and O the control de energizes the COOL_HI blower ta...

Page 25: ... Operation section normal heating operation will resume Heat Blower OFF Delay When the heating thermostat demand W is removed the control de energizes the circulating pump and then de energizes the indoor blower motor and humidifier after a delay time as defined by the dip switch settings in Figure 15 Blower timing begins when the thermostat is satisfied The control returns to standby when the blo...

Page 26: ...timing begins when the thermostat is satisfied The control returns to standby when the blower off time is complete If the thermostat call for emergency heat returns before the blower off delay is complete the control resumes an emergency heating sequence as defined Off Season Circulation Timer All Rinnai Hydronic Furnace models are equipped with a circulation timer It is normal operation for these...

Page 27: ... by closing the service valves or draining the system 3 Remove the body bolts and swing motor assembly away from the volute 4 Pull cartridge out of the motor housing 5 Install replacement cartridge making sure that the cover plate is between the cartridge flange and motor 6 Make sure the replacement cartridge corresponds to the full circulator product number A complete parts list is available from...

Page 28: ...ics 15 1 60 III Determine total external static pressure ESP at design conditions Before using the Air Delivery and Capacity Charts Table 5 0 thru 5 17 determine the total static pressure required From the given example note the Wet Coil Pressure Drop from the field supplied Evaporative Cased Coil Installation Instructions and the Filter Pressure Drop Determine both static pressures at 1200 CFM We...

Page 29: ...ke special care to ensure that all duct sizes are compatible with velocity limits that are associated with both the discharge and return sides of the planned system To all intents and purposes duct sizing calculations are based on fan performance and air side accessory pressure drop data that are provided by original equipment manufacturers The importance of ensuring that the total pressure drop o...

Page 30: ...50 200 150 100 50 NOL 6 6 5 4 3 2 1 MAF 420 400 350 300 250 200 150 100 NOL 8 8 7 6 5 4 3 2 MAF 560 500 450 400 350 300 250 200 150 100 NOL 11 10 9 8 7 6 5 4 3 2 MAF 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 NOL 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 MAF 1300 1200 1150 1100 1050 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 NOL 26 24 23 22 21 20 19 18 17 ...

Page 31: ...R ECM Motor HP 1 2 1 2 3 4 1 Motor Full Load Amps FLA 6 2 6 2 8 5 11 5 Run Capacitor mfd volts N A N A Volts PH HZ 115 1 60 CIRCULATING PUMP Type Wet Rotor Volts PH HZ 115 1 60 Motor Full Load Amps Locked Rotor Amps FLA LRA 1 8 2 6 Pump Motor HP 1 8 Run Capacitor mfd volts 14 250 Maximum Working Pressure PSI 125 Min Max Fluid Temperature ºF ºC 120 49 160 71 HYDRONIC HEATING COIL Coil Construction ...

Page 32: ...M 13 AHB45 RC98HPi e 2 0 TAP 3 H NET HEATING CAPACITY MBH 1 5 AHB45 RC98HPi e AIRFLOW CFM SUPPORTS COOLING CAP RANGE TONS NET HEATING CAPACITY MBH TAP 4 M TAP 5 L NET HEATING CAPACITY MBH 37AHB04508KA5 REU KA3237FFUD WD US 2 0 AHB45 RC98HPi e Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes Minimum Leg...

Page 33: ...al Legs 50 CFM Leg Maximum legs 40 CFM Leg 16 20 TABLE 5 1 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM SPEED TAP 37AHB04508KA5 REU KA2530FFUD WD US TAP 3 H AIRFLOW CFM NET HEATING CAPACITY MBH 2 0 NET HEATING CAPACITY MBH 2 0 13 SUPPORTS COOLING CAP RANGE TONS EWT O F AIRFLOW CFM NOMINAL HEATING CAPACITY External Static Pressure ESP Number of 3 D...

Page 34: ...egs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg External Static Pressure ESP 37AHB06012KA5 REU KA3237FFUD WD US AHB60 RC98HPi e AIRFLOW CFM TABLE 5 2 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER 2 5 NET HEATING CAPACITY MB...

Page 35: ...um legs 40 CFM Leg 30 UNIT SIZE ECM SPEED TAP SUPPORTS COOLING CAP RANGE TONS Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes 20 24 30 37AHB06012KA5 REU KA2530FFUD WD US AHB60 RC80HPi e AIRFLOW CFM TAP 1 H 3 0 NET HEATING CAPACITY MBH AHB60 RC80HPi e AIRFLOW CFM TAP 2 MH 2 5 NET HEATING CAPACITY MBH E...

Page 36: ...COOLING CAP RANGE TONS EWT O F NOMINAL HEATING CAPACITY External Static Pressure ESP 37AHB07514KA5 REU KA3237FFUD WD US AHB75 RC98HPi e AIRFLOW CFM TAP 1 H 4 0 NET HEATING CAPACITY MBH AHB75 RC98HPi e AIRFLOW CFM TAP 2 MH 3 5 NET HEATING CAPACITY MBH 23 Minimum Legs 60 CFM Leg AHB75 RC98HPi e AIRFLOW CFM TAP 3 ML 3 0 NET HEATING CAPACITY MBH 23 Minimum Legs 60 CFM Leg AHB75 RC98HPi e AIRFLOW CFM T...

Page 37: ...COOLING CAP RANGE TONS EWT O F NOMINAL HEATING CAPACITY External Static Pressure ESP Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes 37AHB07514KA5 REU KA2530FFUD WD US AHB75 RC80HPi e AIRFLOW CFM TAP 1 H 4 0 NET HEATING CAPACITY MBH AHB75 RC80HPi e AIRFLOW CFM TAP 2 MH 3 5 NET HEATING CAPACITY MBH 23 ...

Page 38: ...BH 27 32 40 27 32 40 AHB90 RC98HPi e AIRFLOW CFM Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 5 0 NET HEATING CAPACITY MBH AHB90 RC98HPi e AIRFLOW CFM TAP 2 MH 4 0 NET HEATING CAPACITY MBH TABLE 5 6 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM SPEED TAP SUPPORTS COOLING CAP RANGE TONS EWT O F NOMINAL HEATING CAPACITY Ext...

Page 39: ...eg 27 32 40 32 Maximum legs 40 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg AHB90 RC80HPi e AIRFLOW CFM TAP 2 MH 4 0 NET HEATING CAPACITY MBH 27 37AHB09016KA5 REU KA2530FFUD WD US AHB90 RC80HPi e AIRFLOW CFM TAP 1 H 5 0 NET HEATING CAPACITY MBH AHB90 RC80HPi e AIRFLOW CFM TAP 4 L 3 0 UNIT SIZE ECM SPEED TAP SUPPORTS COOLING CAP RANGE TONS EWT O F NOMINAL HEATING CAPACITY External Static...

Page 40: ... CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 13 16 20 1 5 NET HEATING CAPACITY MBH NET HEATING CAPACITY MBH 13 16 20 AHB45 V53i AIRFLOW CFM TAP 5 L AIRFLOW CFM TAP 3 H 2 0 NET HEATING CAPACITY MBH 20 Minimum Legs 60 CFM Leg AHB45 V53i AIRFLOW CFM TAP 4 M 2 0 Optimal Legs 50 CFM Leg TABLE 5 8 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SID...

Page 41: ...Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg AHB45 R75 LSi e AIRFLOW CFM TAP 5 L 1 5 NET HEATING CAPACITY MBH 13 Minimum Legs 60 CFM Leg AHB45 R75 LSi e AIRFLOW CFM TAP 4 M 2 0 NET HEATING CAPACITY MBH 13 16 20 37AHB04508KA5 REU VB2528FFUD WD US AHB45 R75 LSi e AIRFLOW CFM TAP 3 H 2 0 NET HEATING CAPACITY MBH 13 16 20 TABLE...

Page 42: ...n Table 3 is used to determine duct sizes Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg AHB45 R94 LSi e AIRFLOW CFM TAP 5 L 1 5 NET HEATING CAPACITY MBH 13 16 20 AHB45 R94 LSi e AIRFLOW CFM TAP 4 M 2 0 NET HEATING CAPACITY MBH 13 16 20 Minimum Legs 60 CFM Leg 37AHB04508KA5 REU VB2735FFUD WD US AHB45 R94 LSi e AIRFLOW CFM TAP 3 H 2 0 NET HEATING CAPACITY MBH 13 16 20 TABLE...

Page 43: ...Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 30 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes TABLE 5 11 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM ...

Page 44: ... Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 20 24 30 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes AHB60 R75 LSi e AIRFLOW CFM TAP 5 L 1 5 NET HEATING CAPACITY MBH 20 24 30 AHB60 R75 LSi e AIRFLOW CFM TAP 4 ML 2 0 NET HEATI...

Page 45: ... Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 20 24 30 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes TABLE 5 13 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM SPEED TAP SUPPORT...

Page 46: ... 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 23 28 35 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes TABLE 5 14 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM SPEED ...

Page 47: ...gs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 23 28 35 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes TABLE 5 15 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM SPEE...

Page 48: ...um Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg 27 32 40 Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes TABLE 5 16 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE ECM...

Page 49: ...um Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Minimum Legs 60 CFM Leg Optimal Legs 50 CFM Leg Maximum legs 40 CFM Leg Number of 3 Diameter Branch Legs applicable to High Velocity Systems Only Used only if methods other than Table 3 is used to determine duct sizes 40 TABLE 5 17 AIR DELIVERY AND PERFORMANCE DATA BOTTOM OR SIDE RETURN w FACTORY SUPPLIED FILTER UNIT SIZE AHB90 R94...

Page 50: ...0 5 29 6 28 8 27 9 26 2 22 3 21 0 130 40 4 39 1 37 9 36 7 35 6 34 6 33 7 32 6 30 7 26 1 24 5 140 47 7 46 1 44 7 43 3 42 0 40 8 39 8 38 4 36 2 30 8 28 9 150 54 0 52 2 50 7 49 0 47 6 46 2 45 0 43 5 41 0 34 8 32 8 160 62 8 60 8 58 9 57 0 55 4 53 7 52 4 50 6 47 7 40 5 38 1 803 768 740 712 682 652 628 596 569 541 510 120 32 3 30 9 29 8 28 6 27 4 26 2 25 3 24 0 22 9 21 8 20 5 130 38 5 36 8 35 4 34 1 32 ...

Page 51: ...6 31 6 30 6 29 7 28 8 28 1 27 1 25 6 21 7 20 4 130 40 2 38 9 37 8 36 5 35 5 34 4 33 6 32 4 30 5 26 0 24 4 140 46 6 45 1 43 7 42 3 41 1 39 9 38 8 37 5 35 4 30 0 28 3 150 54 2 52 4 50 8 49 2 47 8 46 4 45 2 43 7 41 1 34 9 32 9 160 60 2 58 2 56 4 54 6 53 0 51 5 50 2 48 5 45 7 38 8 36 5 803 768 740 712 682 652 628 596 569 541 510 120 32 2 30 8 29 7 28 5 27 3 26 1 25 2 23 9 22 8 21 7 20 4 130 38 2 36 5 ...

Page 52: ...33 0 32 0 31 0 30 1 29 2 28 4 27 5 25 9 22 0 20 7 130 40 7 39 4 38 2 37 0 35 9 34 9 34 0 32 8 30 9 26 3 24 7 140 47 3 45 8 44 4 42 9 41 7 40 5 39 5 38 1 35 9 30 5 28 7 150 55 0 53 2 51 6 49 9 48 5 47 1 45 9 44 3 41 7 35 5 33 4 160 61 1 59 1 57 3 55 4 53 8 52 3 50 9 49 2 46 4 39 4 37 1 803 768 740 712 682 652 628 596 569 541 510 120 32 6 31 1 30 0 28 9 27 7 26 4 25 5 24 2 23 1 21 9 20 7 130 38 6 36...

Page 53: ...31 8 30 8 29 9 28 9 28 1 27 2 26 5 25 6 24 2 20 5 19 3 130 37 2 36 0 34 9 33 8 32 8 31 8 31 0 30 0 28 2 24 0 22 6 140 45 8 44 3 42 9 41 6 40 4 39 2 38 2 36 9 34 7 29 5 27 8 150 52 1 50 4 48 9 47 3 45 9 44 6 43 4 42 0 39 5 33 6 31 6 160 58 7 56 7 55 0 53 2 51 7 50 2 48 9 47 3 44 5 37 8 35 6 803 768 740 712 682 652 628 596 569 541 510 120 31 2 29 8 28 7 27 7 26 5 25 3 24 4 23 2 22 1 21 0 19 8 130 35...

Page 54: ... 8 58 6 56 8 43 2 971 942 911 880 847 817 784 751 715 680 642 120 38 4 37 2 36 0 34 8 33 5 32 3 31 0 29 7 28 2 26 9 25 4 130 45 2 43 9 42 4 41 0 39 5 38 1 36 5 35 0 33 3 31 7 29 9 140 52 0 50 4 48 7 47 1 45 3 43 7 41 9 40 2 38 3 36 4 34 4 150 60 1 58 3 56 4 54 5 52 5 50 6 48 6 46 5 44 3 42 1 39 8 160 67 6 65 6 63 4 61 2 59 0 56 9 54 6 52 3 49 8 47 3 44 7 844 810 777 734 698 665 626 581 533 504 466...

Page 55: ... 2 62 2 60 4 58 7 57 6 55 8 42 4 971 942 911 880 847 817 784 751 715 680 642 120 38 2 37 1 35 9 34 6 33 3 32 2 30 9 29 6 28 1 26 8 25 3 130 45 3 43 9 42 5 41 0 39 5 38 1 36 5 35 0 33 3 31 7 29 9 140 52 8 51 2 49 5 47 8 46 0 44 4 42 6 40 8 38 9 37 0 34 9 150 60 4 58 6 56 7 54 8 52 7 50 9 48 8 46 7 44 5 42 3 40 0 160 67 9 65 9 63 7 61 5 59 2 57 1 54 8 52 5 50 0 47 5 44 9 844 810 777 734 698 665 626 ...

Page 56: ... 66 4 64 3 62 5 60 6 59 5 57 7 43 8 971 942 911 880 847 817 784 751 715 680 642 120 39 6 38 4 37 2 35 9 34 6 33 3 32 0 30 6 29 2 27 7 26 2 130 46 8 45 4 43 9 42 4 40 8 39 4 37 8 36 2 34 5 32 8 31 0 140 54 6 52 9 51 2 49 5 47 6 45 9 44 1 42 2 40 2 38 2 36 1 150 62 6 60 7 58 7 56 7 54 6 52 7 50 5 48 4 46 1 43 8 41 4 160 70 1 68 0 65 8 63 6 61 2 59 0 56 6 54 2 51 6 49 1 46 4 844 810 777 734 698 665 6...

Page 57: ... 72 8 70 4 1391 1350 1320 1281 1245 1209 1170 1131 1090 1064 1031 120 51 5 50 0 48 9 47 4 46 1 44 7 43 3 41 9 40 3 39 4 38 2 130 60 6 58 8 57 5 55 8 54 2 52 6 50 9 49 2 47 5 46 3 44 9 140 71 7 69 6 68 0 66 0 64 1 62 3 60 3 58 3 56 2 54 8 53 1 150 81 0 78 6 76 9 74 6 72 5 70 4 68 1 65 9 63 5 61 9 60 0 160 91 2 88 5 86 6 84 0 81 6 79 3 76 7 74 2 71 5 69 8 67 6 1222 1174 1140 1100 1063 1014 979 937 8...

Page 58: ... 77 3 1573 1530 1490 1448 1417 1372 1327 1293 1253 1221 1175 120 52 1 50 7 49 4 48 0 47 0 45 5 44 0 42 9 41 5 40 5 39 0 130 61 8 60 1 58 5 56 9 55 7 53 9 52 1 50 8 49 2 48 0 46 1 140 71 8 69 8 68 0 66 1 64 6 62 6 60 5 59 0 57 2 55 7 53 6 150 81 8 79 6 77 5 75 3 73 7 71 3 69 0 67 2 65 2 63 5 61 1 160 91 7 89 2 86 9 84 4 82 6 80 0 77 4 75 4 73 0 71 2 68 5 1400 1351 1317 1275 1225 1183 1134 1095 1053...

Page 59: ...ower mode and installer configuration settings are preserved with power off 6 Flow Sensor Refer to the plumbing section of this manual for installation instructions The sensor is packaged with the hydronic furnace in the literature bag affixed between the filter and filter retention wire 7 Anti scald Thermostatic Temperature Control Valve Anti scald thermostatic temperature control valves are an i...

Page 60: ...60 Rinnai Corporation Hydronic Furnace 37AHB Manual 37AHB045 Wiring Diagram Figure 27 ...

Page 61: ...Rinnai Corporation Hydronic Furnace 37AHB Manual 61 37AHB060 Wiring Diagram Figure 28 ...

Page 62: ...62 Rinnai Corporation Hydronic Furnace 37AHB Manual 37AHB075 and 37AHB090 Wiring Diagram Figure 29 ...

Page 63: ...artment Cover X X X X Hydronic Pump X X X 607000011 3 4 Pump Adaptor Set 2 2 2 X 5 609000019 Control Panel Front Cover X X X X 4 607000010 608000028 608000027 X 609000028 X 609000029 X 609000030 X 609000031 X 609000032 X 609000033 X 609000034 X 609000035 X 609000036 X 609000037 X 609000038 X 609000039 X 609000040 X 609000041 X 609000042 X 609000043 X 607000012 X 607000013 X 607000014 X 607000015 X...

Page 64: ...1 2 4 3 7 8 608000010 size 045 608000011 size 060 608000012 size 075 608000013 size 090 609000053 X 609000054 X 609000055 X 609000056 X 2 609000057 Left Blower X X X X 608000017 X 608000018 X 608000019 X 608000020 X 4 609000058 Right Blower X X X X 605000025 1 2 HP Motor X X 605000027 3 4 HP Motor X 605000028 1 HP Motor X 6 609000059 Motor Mount X X X X 608000021 X 608000022 X 608000023 X 60800002...

Page 65: ...nformation below to keep for your records Purchased from _________________________________________________________________ Address _____________________________ Phone _________________________________ _____________________________ Date of Purchase __________________________________ Model No ________________________________________ Serial No ________________________________________ Installed by ___...

Page 66: ... without internet access please call 1 866 RINNAI1 745 6241 Receipt of Registration by Rinnai will constitute proof of purchase for this product However Registration is not necessary in order to validate this Warranty What is not covered This Warranty does not cover any failures or operating difficulties due to the following accident abuse or misuse alteration misapplication force majeure improper...

Page 67: ...Rinnai Corporation Hydronic Furnace 37AHB Manual 67 Notes ...

Page 68: ......

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Rinnai 37AHB SERIES, Installation, Operation And Maintenance Manual

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