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Aircom Relays

The Aircom circuit board has three available “dry contact”

relays. Contact 3 is not available.

Contact 1

This relay is a dry contact (no power supplied from board).

The relay switches upon a call for heat.
This relay can be used to switch the heat demand signal for

boiler operation.
Power (if required) must be supplied to common from an

external source.
Max. Voltage

- 120 volts

Max. Amperage - 10 amps
Maximum 115V 10 amp resistive load.

T30

T29

T28

T43

SPARE

F2 MAX 2 amp

24Vac

efr

T42

Contact 1

N.0. COM N.C. N.0. COM N.C. N.0. COM N.C. N.0 . COM

Contact 2

Contact 3

Contact 4

N.C

Boiler

Contact

T30

T29

T28

T43

SPARE

MAX 2 amp

24Vac

efr

T42

Contact 1

N.0. COM N.C. N.0. COM N.C. N.0. COM N.C. N.0 . COM

Contact 2

Contact 3

Contact 4

N.C

Humidifier

Contact

Contact 2 and 4

These relays are dry contacts (no power supplied from

board). The relays switch whenever the CAF blower motor

is operating.
These relays can be used to interlock Humidifiers, Air

Cleaning Equipment, etc.
Power (if required) must be supplied to common from an

external source.
Max. Voltage

- 120 volts

Max. Amperage - 10 amps

In order for any appliance to work properly it must be set

up and tested by a knowledgeable technician.

The following conditions must be met prior to
start-up

1. Ensure that connecting water lines are purged and free of

debris.

Caution: solder or other debris may cause the furnace

pump or check valve to malfunction.

2. Blower wheel rotates freely inside its housing.

3. Wiring connections are tight.

4. All duct and pipe connections are sealed.

5. Check that styrene block is removed from under pump.

6. Front access door is on tight.

7. Fan speed selection:

Heating/Cooling

- factory setting is at high speed and

can be changed in the electrical box to medium-high or

medium if required.

Once the necessary connections have been made,
follow the Air Handler Start-Up Procedure:

1. Close shut-off valves separating the Air Handler from the

water heater.

2. Set up water heater according to manufacturer's instruc-

tions.

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 the pump, turn the large screw on the face of the

pump counterclockwise until water leaks out, then tight-

en. Open the supply shut-off valve.

4. Turn on power supply to Air Handler.

Caution: blower

may start to operate at low speed.

5. Switch the room thermostat to heat. The thermostat

should be set higher than the current room temperature in

order to energize the pump and commence the heating

cycle. (If the pump does not start, or the Air Handler is

not producing heat, refer to the Troubleshooting Section

in this manual.

6. Set room thermostat at desired temperature setting.

Start-Up Procedure

Содержание AH-U-L2A-36-P16

Страница 1: ...LEAVE FOR HOMEOWNER NOTE Due to ongoing research and product development specifications ratings and dimensions are subject to change without notice 69 AH 091517 AIR HANDLER Models AH U S4A 24 P16 E16 AH U L4A 36 P16 E16 AH U S2A 30 P16 E16 AH U L2A 36 P16 E16 AH U L2B 48 P16 E16 ...

Страница 2: ...e Breakdown 17 Specifications 18 22 Work Sheets 23 28 Wiring Diagrams 29 30 Table of Contents Air Condition coil freezing can damage the hydronic coil of the Air Handler Install a Freeze Thermostat Kit to your air conditioning coil to prevent coil freeze up Check with your air conditioner distributor to obtain a Freeze Thermostat Kit ATTENTION The Air Handler hydronic coil is not to be used for ch...

Страница 3: ...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 handler No flames fumes or flue gases to be concerned about Your domestic hot water heater boiler now provides the heat source for your furnace This Operating and Installation Guide will help you learn about your LIFE...

Страница 4: ...tems The guidelines in the manual are designed for residential forced warm air Integrated Combo Systems which utilize domestic water heaters or boilers and the LIFEBREATH furnace Heating and cooling loads shall be calculated in accordance with recognized Residential Heat Loss and Heat Gain Calculation methods Duct design shall comply with recognized Residential Air System Design methods Descriptio...

Страница 5: ... systems that incorporate a pressure tank i e well systems are normally Open Systems and most municipal water systems are Closed Systems Drain Valve A drain valve is required to allow the heating loop to be drained for service or repair 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 sys tem to be near the water ...

Страница 6: ...ove the CAF AH This will minimize thermal siphoning in the combo system It should be noted that problems have been observed when using the side tappings on certain water heaters therefore it is strongly recommended to use the top water tappings as indicated in Figure 1 to minimize thermal siphoning and related issues Water Heater To House CAF or AH Min 12 305 mm above top of CAF AH 12 Water Heater...

Страница 7: ... downstream of the heating loop connection and upstream of any domestic hot water connection The purpose of the valve is to limit the maximum tempera ture available for domestic hot water by mixing hot water from the water heater with cold water 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 s...

Страница 8: ...use reduced bore ball valves as they are very restrictive to water flow Gate Valve The Gate Valve can be used as a shut off or drain valve When in the open position there is very little resistance to flow Gate valves tend to be less expensive than other types of valves but are susceptible to chatter noise and malfunc tion with age Globe Valve The Globe valve can be used as a shut off drain or thro...

Страница 9: ...r as required as long as there is a 20 F 11 C temperature drop between the hot water supplied to the air handler and the returning water A temperature drop less than 20 F 11 C can cause the water heater thermostat not to initiate This will result in a lower hot water supply temperature or poor space heating performance with fluctuating domestic water temperatures Call for Domestic Hot Water and Sp...

Страница 10: ... of water connections for the unit being installed Push fit Fittings instantly make plumbing connections thereby eliminating the need for solder Be sure to read the Push fit Fitting Installation Instructions included with the Quick Connect Fitting Kit before making any connections PART 99 CAF PKit1 2 The 1 2 assembled kit PART 99 CAF PKit3 4 The 3 4 assembled kit Quick Connect Kit PART 99 CAF PKit...

Страница 11: ...pumps performance and the head pressure resistance of the complete heating loop system The piping and fittings used to connect the water heater and air handler must be sized to handle the volume of hot water required by the air handler within the pressure limitations of the circulation pump All piping fittings solders and fluxes must be acceptable for use with domestic hot water Pressure Drop PD P...

Страница 12: ...r at approximately 105 F 40 5 C to 110 F 43 C Room Thermostat The room thermostat controls both the water circulation pump and the air circulation fan It should be on a centrally located inside wall away from any source of heat such as diffusers appliances and direct sunlight Energy Saving Room Thermostat A set back thermostat or smart stat can be used with a combo system but care must be taken in...

Страница 13: ...he hot water heater If this is not possible or if the pip ing layout is complex the total head pressure on the pump should be calculated Ducting The duct sizing for the furnace section can be determined using HRAI Residential Air System Design Manual SMACNA or any other industry recognized manuals Note Combo units normally deliver air at approx 110 F 43 C and therefore may require larger than nor ...

Страница 14: ...c style heat Off Season Circulation Timer Water is periodically circulated through the space heating loop during the summer and other periods of infrequent use The concern is that water which remains stationary in the heating loop during the summer may be less than desirable as domestic hot water when it is returned to the water heater at system startup in the fall Basic Functions C Common R 24 vo...

Страница 15: ...QUALIFIÉ PEUT AJUSTÉ LES COMMUTATEURS DIP CHASSIS T44 T3 T4 T5 T6 Line Ligne T1 T2 T13 T14 T15 T16 Neutral Neutre T11 T12 2 AMPS SW1 ON 8 7 6 5 4 3 2 1 T21 T22 T23 T24 AUX 1 AUX 2 Standard 24 Volt Thermostat Connection Thermostats are not avail able through Airia Basic Functions Thermostat fan switch will control low speed fan operation Call for heating high speed Call for cooling high speed Funct...

Страница 16: ... start up 1 Ensure that connecting water lines are purged and free of debris Caution solder or other debris may cause the furnace pump or check valve to malfunction 2 Blower wheel rotates freely inside its housing 3 Wiring connections are tight 4 All duct and pipe connections are sealed 5 Check that styrene block is removed from under pump 6 Front access door is on tight 7 Fan speed selection a He...

Страница 17: ...still be in the water lines If so re purge the system according to the start up procedure 7 Confirm that the inlet and outlet pipe connections are not reversed 8 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 remaining in the lines interfere with their operation If this occurs re purge the system as indic...

Страница 18: ...V 60Hz E16 Upgrade ECM Motor 120V 60Hz Example Model Number AH U S2A 24 P16 CFM High Speed Cooling Capacity Model Configuration AH Airhandler No HRV Refer to CAF Clean Air Furnace specifications if a built in HRV is required Available Air Handler Models AH U S2A 30 P16 E16 AH U S4A 24 P16 E16 AH U L2A 36 P16 E16 AH U L4A 36 P16 E16 AH U L2B 48 P16 E16 Refer to individual specifications pages for H...

Страница 19: ...abinet All units conform to CSA and UL Standards info lifebreath com 19 Model AH U S4A 24 P16 Voltage 120 VAC 60 Hz Hp 1 3 Amps total 8 Water 1 2 13 mm Copper Connections Soldered Connection Airflow High 25 in wg 1030 CFM 5 in wg 890 CFM Net Weight 111 lbs 50 3 kg Shipping 130 lbs 59 kg Weight Date ___________________________________________ Tag _____________________Qty ___________________ Project...

Страница 20: ...otal 10 6 Water 3 4 19 mm Copper Connections Soldered Connection Airflow High 25 in wg 1350 CFM 5 in wg 1180 CFM Net Weight 121 lbs 54 9 kg Shipping 140 lbs 63 6 kg Weight Note Return plenum opening available off either side of cabinet All units conform to CSA and UL Standards Date ___________________________________________ Tag _____________________Qty ___________________ Project ________________...

Страница 21: ... 30 8 29 2 37 0 36 4 35 3 33 5 41 6 41 0 39 8 38 0 CFM 5 WG 46 6 45 8 44 1 42 2 51 1 50 4 48 8 46 5 S2A 30 Coil Output Chart 1000 s of BTUH 29 0 28 7 27 7 26 4 34 1 33 6 32 8 31 0 39 1 38 4 37 3 35 4 44 2 43 4 42 0 39 9 49 3 48 5 46 9 44 5 54 2 53 3 51 6 49 1 30 5 29 8 28 8 27 4 35 4 35 0 33 8 32 0 40 8 40 1 38 4 36 6 45 9 45 1 43 5 41 3 51 1 50 2 48 3 45 9 56 5 55 2 53 3 50 5 Note Return plenum o...

Страница 22: ...2 8 30 2 24 7 38 5 37 8 35 3 28 9 44 2 43 3 40 4 33 1 49 8 48 9 45 6 37 3 CFM 5 WG 55 4 54 4 50 8 41 5 61 1 60 0 55 9 45 7 L2A 36 Coil Output Chart 1000 s of BTUH 35 2 34 5 32 0 25 9 41 2 40 4 37 5 30 2 47 2 46 2 42 9 34 6 53 2 52 1 48 4 39 0 59 2 58 0 53 8 43 4 65 3 63 9 59 3 47 8 36 7 36 0 33 3 26 6 43 0 42 0 38 9 31 1 49 2 48 1 44 5 35 6 55 4 54 3 50 2 40 1 61 7 60 4 55 8 44 6 68 0 66 5 61 5 49...

Страница 23: ... 2 68 1 69 7 69 3 68 6 75 1 L2B 48 Coil Output Chart 1000 s of BTUH 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 49 0 54 6 57 3 56 9 56 1 62 5 64 6 64 2 63 3 70 5 71 9 71 5 70 5 78 5 79 3 78 7 77 7 86 6 Model AH U L2B 48 P16 Voltage 120 VAC 60 Hz Hp 3 4 Amps total 12 2 Water 1 2 13 mm Copper Co...

Страница 24: ...24 ...

Страница 25: ...25 ...

Страница 26: ...33 T34 T35 T36 T37 T38 T39 T40 T41 T42 Contact 1 N 0 COM N C N 0 COM N C N 0 COM N C N 0 COM Contact 2 Contact 3 Contact 4 Digital Controls Contrôles numériques N C R W Y G A C Unit Unité A C Thermostat To Vers Y To Vers C Electrical control panel service by electrician only Disconnect electrical supply prior to servicing Improper wiring may result in damage to this unit Use copper supply wires CA...

Страница 27: ... N C N 0 COM N C N 0 COM Contact 2 Contact 3 Contact 4 Digital Controls Contrôles numériques N C R W Y G A C Unit Unité A C Thermostat To Y To C ORANGE N O Normally open Normalement ouvert N C Normally closed Normalement fermé COM Common Commun T Terminal P Plug Prise K Relay Relais F Fuse Fusible SW Switch Commutateur Electrica l control panel service by electricia n only Disconnec t electrica l ...

Страница 28: ...or Telephone Contact Serial Number Installation Date Model TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION Register for your warranty at www lifebreath com Airia will require the Model and Serial Number to register the unit 28 69 AH 091517 ...

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