Lifebreath AH40BHW Operation, Sizing And Installation Manual Download

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NOTE: Due to ongoing research and product development, specifications,

ratings and dimensions are subject to change without notice.

For Models:

AH40DHW
AH60DHW
AH40BHW
AH60BHW
AH80BHW

AH-01

1203

Installing Contractor

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Serial Number

Installation Date

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TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION

OPERATION, SIZING AND

INSTALLATION MANUAL

NOW WITH

FIVE YEAR WARRANTY

ON PARTS AND ACCESSORIES

Summary of Contents for AH40BHW

Page 1: ... subject to change without notice For Models AH40DHW AH60DHW AH40BHW AH60BHW AH80BHW AH 01 1203 Installing Contractor Telephone Contact Serial Number Installation Date Model TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION OPERATION SIZING AND INSTALLATION MANUAL NOW WITH FIVE YEAR WARRANTY ON PARTS AND ACCESSORIES ...

Page 2: ...scription and Purpose 4 Combo System Basic Principle 5 Specifications 12 16 Installation 17 Plumbing 18 Electrical 19 Optional Dehumidistat 20 Start Up Procedure 21 Operation 22 Troubleshooting 23 System Commissioning 24 Work Sheets 25 30 ...

Page 3: ... all other normal domestic hot water needs If there is an unusually high demand for hot water such as filling a large hot tub than all you need to do is allow more time for the task so the water heater boiler can keep up to its job of providing hot water for the heating system as well as other household uses Once it is correctly installed safety will never be an issue with your LIFEBREATH Air Hand...

Page 4: ...e at a higher temperature than for other uses an anti scald valve shall be used to ensure water for other uses is reduced in temperature to minimize a scald hazard potential Combining two or more end uses such as space heating and the heating of domestic hot water in a single system has the potential to increase effi ciency and reduce overall capital costs However the proper design installation an...

Page 5: ... well systems are normally open systems 5 Combo System Basic Principles WATER HEATER DOMESTIC HOT WATER SUPPLY AIR BLOWER HEATING COIL CHECK VALVE RETURN AIR COLD WATER INLET ANTI SCALD VALVE WHEN REQUIRED VALVE shut off VALVE shut off VALVE shut off VALVE balancing COOLING COIL OPTIONAL DRAIN VALVE EXPANSION TANK OR OTHER MEANS WHEN REQUIRED CHECK VALVE WATER HEATER DOMESTIC HOT WATER SUPPLY AIR ...

Page 6: ...Domestic Hot Water and Space Heating Operation When both return water from the space heating loop and new cold water replacing domestic water being used enters the water heater the mixed entering water is cool enough to activate the thermostat quickly In this situation the water heater must be capable of satisfying the combined need for hot water domestic hot water and space heating at the same ti...

Page 7: ...sistance to flow Gate valves have a greater susceptibility to chatter noise and malfunction with age Gate valves tend to be less expensive than the other type of valves The ball valve can be used as a shut off or drain valve but not a throttling balancing valve When in the open position a full bore ball valve has very little resistance to flow and these valves tend to be both the least expensive a...

Page 8: ...air and to remove air from the heating loop when commissioning a system The drain valve should be near the low point of the return piping system upstream of the shut off valve and is preferred to be near the water heater Throttling Valve The throttling balancing valve is used to reduce the water flow rate and thereby increase the water temperature drop This is done to ensure proper activation of t...

Page 9: ...ter from the municipal supply The Anti Scald valve must be thermostatically controlled and approved to the ASSE standard No 1016 and 1017 for use as an anti scald device Note There are a number of pressure balancing valves and mixing valves on the market which are not certified as a anti scalding device Off Season Circulation Controls Models with a T in the model number Although the UCG Unified Ca...

Page 10: ...water flow rate GPM Air Handler return air temperature Air Handler air flow rate CFM The hot water inlet temperature is typically 140 F 60 C If this temperature must be increased to achieve higher outputs from the furnace an anti scald valve must be used to prevent domestic hot water temperatures above 140 F 60 C The manufacturer of the Hot Water Tank should be consulted for temperatures higher th...

Page 11: ...water millimeters of water Note Although the water in the combo system is pressurized by the domestic water system the pump is required to create water flow in the heating loop The domestic water system applies the same pressure to the supply and return sides of heating loop Note The vertical height of the heating loop does not impact on the head pressure as the pressure required to push the water...

Page 12: ...ers 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions Clearances Note Return plenum opening available off either side of cabinet All units conform to CSA and UL Standards AH40DHW OUTPUT MBH Model AH40DHW Voltage 120 VAC 60 Hz Hp 1 3 Amps total 7 Water 1 2 Copper Soldered Connections Connection Airflow High 25 in wg 1030 CFM 5 in wg 890 CF...

Page 13: ...ers 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions Clearances AH60DHW OUTPUT MBH Note Return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Model AH60DHW Voltage 120 VAC 60 Hz Hp 1 2 Amps total 8 7 Water 3 4 Copper Soldered Connections Connection Airflow High 25 in wg 1350 CFM 5 in wg 1180...

Page 14: ...0BHW Filters 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions Clearances Note Return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Model AH40BHW Voltage 120 VAC 60 Hz Hp 1 3 Amps total 7 Water 1 2 Copper Soldered Connections Connection Airflow High 25 in wg 1280 CFM 5 in wg 1075 CFM Net Wei...

Page 15: ...0BHW Filters 1 pleated in return plenum side Case Prepainted galvanized steel for superior corrosion resistance Dimensions Clearances Note Return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Model AH60BHW Voltage 120 VAC 60 Hz Hp 1 2 Amps total 8 7 Water 1 2 Copper Soldered Connections Connection Airflow High 25 in wg 1402 CFM 5 in wg 1220 CFM Net W...

Page 16: ...M 130 140 150 160 170 180 45 5 43 9 53 3 51 3 61 1 58 8 68 8 66 3 76 7 73 8 84 5 81 4 1639 1618 1575 37 5 37 3 36 9 40 4 43 9 43 7 43 2 47 3 50 3 50 0 49 5 54 2 56 8 56 5 55 8 61 1 CFM 5 WG 63 3 62 9 62 2 68 1 69 7 69 3 68 6 75 1 AH80BHW Output MBH 40 7 40 4 39 9 44 1 47 6 47 2 46 7 51 6 54 5 54 2 53 5 59 2 61 5 61 1 60 3 66 7 68 5 68 0 67 2 74 3 75 5 75 0 74 0 81 9 42 8 42 5 41 9 46 7 50 0 49 7 4...

Page 17: ...prox 110 F 43 C and therefore may require larger than normal ductwork When installing the Air Handler as a replacement unit on a retrofit application always calcu late the size of duct that is there Any ductwork running through unconditioned space must be sealed properly and insulated to prevent heat loss All local codes must be followed in deter mining the amount of insulation needed Piping The h...

Page 18: ...oducts the check valve is included with our manual kit for field installation between the air handler and hot water source The check valve should be installed in a vertical run of pipe with the flow of water in an upward direction An arrow on the check valve indicates its correct orientation and must match the direction of water flow This will allow for ease of service to remove any installation d...

Page 19: ...nd draws anywhere from 2 8 7 amps depending on fan speed The low voltage thermostat not provided connects to the R W terminals for heating and the R Y C terminals when calling for cooling Caution should be used if installing a setback thermostat to control the system If the thermostat is set back too far and for example is set to call for a lot of heat when you get out of bed at which time showeri...

Page 20: ... to determine if this relay configuration is required R G W Y C R G W Y Furnace T stat COM or Dehumidistat 24 Volt Relay NO Interface Relay NC TB 102 1099 Optional Dehumidistat An optional dehumidistat can be connected to the furnace to help eliminate excessive moisture during the heating season When the dehumidistat senses moisture in excess of the control setpoint the blower will be overridden i...

Page 21: ...Up Procedure is as follows 1 Close shut off valves separating the Air Handler from the water heater boiler 2 Set up water heater boiler according to manufacturer s instructions 3 Purge air from unit To do so open the supply shut off valve to the furnace Attach a garden hose to drain valve and drain water until you get a continuous flow Close the drain valve and purge the pump To purge the air from...

Page 22: ...ll automatically switch to a higher speed After the required hot air has been delivered the blower will switch back to low speed When the thermostat calls for cooling optional A coil and condensing unit required the furnace blower activates to high speed and the outdoor condenser unit is energized After the thermostat temperature is reached the condensing unit will shut off and the blower will ret...

Page 23: ...er is sized large enough for heat load of house and for domes tic hot water use 7 Air may still be in the water lines If so re purge the system according to the start up procedure 8 Confirm that the inlet and outlet pipe connec tions are not reversed 9 Ensure that there are no other restrictions in the water lines such as faulty valves or debris Pump is noisy Pumps can become noisy when air remain...

Page 24: ...logi cal step by step method which should minimize the work and time involved in having the system meet the designed parameters The following conditions are assumed The air filter is in place All supply diffusers and return grilles are fully open and unrestricte Hot water is available to the furnace The drain valve for the heating loop is closed The shut off valves for the heating loop are fully o...

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