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MaxAir 50e, 70e, 100e P2 & P3 Zoned
Mini Ducted Fan Coil Systems
Design, Installation and Maintenance
AirMax Technologies Mini Ducted
Install in accordance with CEC and NEC; All wiring shall conform to CEC, NEC, and
CERTIFIED
FAN COIL UNITS
Combination Heating/Cooling Equipment
Instructions
MaxAir(e) fan coil systems
Important: Read and save these instructions.
local building and electrical codes.
Concord, ON, Canada, L4K 2Y8
E-mail:
Web Site:
LISTED
PLASTIC MATERIAL
Listed in accordance with CAN/ULC-S102.2
Mounted as single units or in pairs, minimum spacing
of 610 mm between units.
Flame Spread – 0 Smoke Developed - 70
Air Diffuser Assembly
Flame Spread – 0 Smoke Developed - 30
Elbow, Extender, Take-Off, Dust Cap, Click Connector
209 Citation Drive, Units 5 & 6
Telephone (905) 264-1414
Fax (905) 264-1147
info@airmaxtechnologies.com
www.airmaxtechnologies.com
Brochure I0607B – Rev. 19-02-19
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Summary of Contents for Airmax MaxAir 50eP2
- Page 1 Mini Ducted Fan Coil Systems Combination Heating/Cooling Equipment Design, Installation and Maintenance Instructions AirMax Technologies Mini Ducted MaxAir(e) fan coil systems Important: Read and save these instructions. Install in accordance with CEC and NEC; All wiring shall conform to CEC, NEC, and local building and electrical codes.
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Page 2: Table Of Contents
Table of Contents INTRODUCTION ......... 5 .............................5 BENEFITS .............................5 APPLICATIONS PRODUCT DESCRIPTION ......... 6 .............................. 6 CABINET ........................... 6 HEATING COILS ...........................6 COOLING COILS ..............................6 .........................6 OFF SEASON CIRCULATION ...........................6 WATER HEATER ..............................6 BOILER ACCESSORIES ......... 6 ............................6 CHECK VALVE .......................... - Page 3 ......................17 BRANCH DUCT TERMINATION ......................17 INSTALLING THE DIFFUSERS ............................17 AIRFLOW ..........................17 RETURN AIR DUCT ..........................17 CONDENSATION ......................18 DX REFRIGERANT COOLING ..........................18 CONDENSING UNIT ....................18 ANTI ICE CONTROL AND TX VALVE ......................19 EVAPORATOR COIL ASSEMBLY ........................19 REFRIGERATION PIPING .......................19 CONDENSING UNIT WIRING ......................
- Page 4 & ....................38 WATER HEATER T P IS WEEPING ......................38 INSUFFICIENT OR NO HEAT ......................38 COLD WATER AT HOT FAUCET ................... 38 FAN RUNS FOR COOLING BUT NOT HEATING ......................38 HEATING DURING OFF CYCLE ZONE SYSTEM TROUBLESHOOTING ..39 ........................
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Page 5: Introduction
Gas Utility, or purchased heating and domestic hot water, eliminating from Airmax Technologies as part of a the need for a furnace. complete heating package. Combo heating systems are ideally suited for Benefits of the MaxAir(e)™... -
Page 6: Product Description
All Airmax accessory slab cooling coils are All Airmax Technologies combo air shipped with the liquid and suction lines handlers are compatible for use with boilers piped to the exterior of the unit casing. -
Page 7: Circulation Pump
AirMax can include a valve, at additional cost, with each air handler for field installation. EQUIPMENT SELECTION AND SIZING This section of the manual is to assist the selecting the number of diffusers designer of the MaxAir™... -
Page 8: Example
Table 1 Recommended Number of Diffusers Model MaxAir 50e P2 & P3 MaxAir 70e P2 & P3 MaxAir 100e P2 & P3 Btuh Heating @180°F E.W.T. 55,649 77,981 98,593 Btuh Heating @170°F E.W.T. 49,971 69,804 89,630 Btuh Heating @160°F E.W.T. 44,700 58,902 80,666... -
Page 9: Difference In The Number Of Diffusers Needed For Heating & Cooling
required. a kick space the diffuser may have to be trimmed to fit properly. In the bathroom do difference in number of diffuserers not locate in an area that will cause a draft on needed for heating and cooling people entering or leaving a bath or shower. There may be cases in which the number of trunk duct design notes outlets needed for heating may be... -
Page 10: Elbow And Tee Design Notes
This correction applies to both 4" heating and cooling capacities. Should 5" additional branch ducts be required in certain 6" zones consult Airmax Technologies before 7" adding them. Do not run un-insulated duct 8" in unconditioned spaces. 10" 100'... -
Page 11: Indoor Air Quality
ensure adequate free area and no velocity attention is required when installing the noise at the grill. Where allowed by local discharge hose. Although the humidifier codes, a single return air grill may be used. installation manual may state that the When using flexible duct for return air, use discharge hose is to be mounted in the one size larger duct due to the higher friction... -
Page 12: Low Water Temperature Systems
conditioning for the main floor (and second should then be covered with another layer of floor if applicable) and radiant tubing in the insulation. Due to the fact that with lower basement and tile areas. A few outlets water temperatures you get a lower supply air located in the basement is recommended in temperature, it is imperative that the water order to provide good air circulation and... -
Page 13: Anti-Scald Valve
& TX valve recommendations of the manufacturer or supplier should be followed regarding The Airmax accessory slab cooling coil is connection. shipped loose. A factory installed TX valve When the space heating loop connections... -
Page 14: Water Heater/Boiler
external cooling coil option are a draw diffuser location through design. The drain pans have to be Please refer to the duct layout that has been trapped to avoid air losses. The proper height done for the installation. This layout has been of the trap is 2 times the internal static in the designed to provide you with the maximum unit casing. -
Page 15: Truck Duct
a horizontal or vertical position. screws on each side of the connector to fasten. Locate the screws at 90 to one The location of the fan coil is not as critical as another. After securing the connector with the it is with conventional low velocity systems. screws, be sure to tape or seal all joints to Location of the fan coil unit will depend on: eliminate any air leaks. -
Page 16: Branch Ductwork
branch ductwork Should you find the need to extend a branch duct from the factory supplied 10’ to 15’ it will After the floor and ceiling holes have all been be necessary to join the 2 pieces of branch located and drilled, it is time to install all the duct. -
Page 17: Branch Duct Termination
On units supplied with an Airmax Accessory slab external cooling coil, a drain connection is provided on the cooling coil. A drain line, with a trap must be installed (the size of the trap is discussed in the previous section). -
Page 18: Dx Refrigerant Cooling
When this potential exists, a secondary drain Care must be taken when mounting the pan should be installed under the entire unit. Airmax Accessory slab coil to the side or This pan should also extend under the piping back of a Airmax fan coil. This is connections and TX valve. -
Page 19: Evaporator Coil Assembly
Plumbing fittings may contain wax or other contaminants which are detrimental to the proper operation of the system. Insulate the suction line as per condenser manufacturer’s instructions Install the refrigeration lines as per local codes and good piping practices, supporting the pipe every 5 feet. -
Page 20: Electrical (Maxe Units)
pump, evacuate the system from both the low add refrigerant to raise the pressure to 2 psig, and high side of the system to 500 microns and either open the service valves (suction and ensure that the system holds at the first) on pre-charged condensing units, or add vacuum pressure. -
Page 21: Power Input
POWER: 24VAC (nominal) supplied by a Class II transformer between terminals "R" (“24VAC LINE”) and "C" (“24VAC RET”). The RED “POWER” LED illuminates when the control is powered. Transformer rating: 20VA minimum Voltage: 22.5Vac Minimum, 30Vac Maximum Current: <100ma (All outputs and relays active) NOTE: SUPPLY 24VAC POWER FROM THE SECONDARY OF AN NEC CLASS-2 TRANSFORMER ONLY. -
Page 22: Outputs
b.1.) INPUTS SPECIFICATIONS Input Impedance: Y1 and Y2 ~1K Ohm between: each terminal to C (24VAC Return). Minimum acceptable cooling anticipator resistance: 3.3K Ohms between 24Vac(R) to Y1 or Y2 All other inputs: >10K Ohm between each terminal and C (24VAC return). Load Current FORM FACTOR —... - Page 23 8A @120 VAC (resistive) 8A @ 240 VAC (resistive) C. LOW VOLTAGES RELAY OUTPUTS: All Three low voltage relay contacts are rated 1AMP maximum @ 30VAC maximum. "X1" LOW STAGE "Y" RELAY (Contact X1): The LOW Stage Y relay activates upon detecting a call for “Y1” (with or without “O”...
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Page 24: Outputs With Dip Switch
DIP-SWITCHES: FLOW VOLUME SELECT OPTIONS a. DISCRETE/VARIABLE (0-10V) MODE INPUT SELECTOR (SW3-1) SW3-1 IN “DISCRETE” SWITCH POSITION: TABLE A-B PWM OUTPUT SIGNAL LEVEL SELECTOR: The switch labeled "TABLE A", "TABLE B" in combination with the switches labeled "L1" and "L2" select the flow levels for each of the discrete input states. Each Discrete input or combination of inputs activates a pre-programmed selection of customer- specified PWM duty-cycle output. - Page 25 SW3-1 IN “0-10V IN” SWITCH POSITION: Selects CONTINUOUSLY VARIABLE outputs per table 3, below and the command (volume) level is input via the “0-10V IN” connector: L1,L2 SELECTIONS WHEN 0-10V INPUT ACTIVE SET MAX COMMAND INPUT COMMAND AIRFLOW RANGE OUTPUT RANGE (DIP-SW2) L1,L2=0 0-10V...
- Page 26 When either or both W1 and W2 are active and D is NOT active, the (W1 or W2) & NOT D in Tables A and B. output will be per the column 2-stage WIRING: True 2-stage (2-wire: W1, W2) operation requires the W1 and W2 terminals of the thermostat to be wired to W1 and W2, respectively, on the DCC7235.
- Page 27 “PUMP TMR ON”: The Pump RELAY Timer functions normally and will activate per paragraph B. a., above. “PUMP TMR OFF”: The Pump RELAY Timer is disabled and will not activate. NORMAL &TEST MODE TIMING (SW3-2 "TEST"): NOTE: THIS SWITCH SELECTS NORMAL OPERATION OR THE TEST MODE PUMP SWITCH (A1, A2, A3) TIMING AND FUNCTION LOCKOUT.
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Page 28: Typical Hookup
TYPICAL HOOKUP FIG 3 DIMENSIONS and MOUNTING: PC Board Dimensions: 4.8” x 5.66” Mounting: 5 Nylon standoff snap-in feet Hole centers: 4 at: corners spaced 4.5” x 5.26” 1 at: down 1.40”, and in-board (left) 0.960” from center of top right corner standoff. Recommended hole size: 0.191”... -
Page 29: Understanding The Zone Controls
3. Purge all air from the space heating loop reading (longer for systems with a storage by closing the isolation valve on the return tank). Make certain to take both readings one leg of the loop and open the drain to immediately after the other. -
Page 30: Using The Zone Controls With Multi-Stage Equipment
• The zone panel has a connection to the fan is already heating. The opposite call can be coil main control board. handled one of two ways: • The zone panel has a connection to power • Zone 1 Priority ensures opposite calls are the zone dampers. -
Page 31: Understanding The Zone Controller Display
The plenum temperature sensor helps the will shut off the second stage. If the supply equipment stage by looking at the supply temperature crosses the high or low limit, the temperature and comparing it to the high or panel turns off the equipment, and switches low limit. - Page 32 Function Color Callout Description Thermostat1,2 and 3R Zone thermostats power monitor Thermostat1,2 and 3Y Yellow Zone thermostats compressor call Thermostat1,2 and 3G Green Zone thermostats fan call Thermostat1,2 and 3W White Zone thermostats heating call Panel Power Green Indicates 24VAC available to panel Equipment RH Power Indicates power at equipment RH terminal Equipment RC Power...
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Page 33: Configuring The Zone Panel
CONFIGURING THE ZONE PANEL All Zone Panels feature easy to configure DIP glance at the DIP switches to insure a panel is set up properly. switches that eliminate concerns about configuration loss after a power failure. The Both the 2-zone and the 3-zone panel use installer can also tell at a glance that the similar DIP switch setup, while the 3-zone panel is set up properly prior to leaving the... -
Page 34: Additional Features Of The 3 Zone Panel
Table 7 3-Zone Panel Configuration Switch Number Switch Label Switch Function Non-HP/Heat Pump Conventional or heat pump control of W/Y Normal/Dual Fuel HP 1 Stage lockout on 2 stage call Rev Valve B/O O/B terminal active in heating (B) or cooling (O) Fan Gas/Elect &... -
Page 35: And 3 Zone Panel Checkout
cutout. If the panel is configured for heat The limit switches are located directly below pump, staging occurs at 10 degrees less than the 3-zone panel LED. The display informs cutout. The same limits are used for cooling the user of the panel condition and the staging. -
Page 36: Sequence Of Operation P3
when continuous run (Fan On) is thermostat breaks connection between employed at the thermostat). “R”, “G” and “Y1” / “Y2” wires. When both zone temperature are Cooling Cycle satisfied the cooling condenser circuit Zone thermostat calls for cooling, is de-energized, the zone dampers connection is made between (“R”... - Page 37 minimum open position and the cooling condenser circuit is energized provided field supplied freeze thermostat is closed. 3. After Time delay fan motor starts at value selected by installer and corresponding “Y1” or “Y1” input 4. Only upon a call for additional zone(s), after the time delay and based on a proper plenum sensor reading will the fan value increase to “Y2”...
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Page 38: Service And Maintenance
SERVICE AND MAINTENANCE drain connection to the cooling coil to ensure filter it is free of debris. An easy way to do this is to blow into the tube to see if there is any The MaxAir™ series air handlers are not obstruction. -
Page 39: Insufficient Or No Heat
the heating output. Options are: Restriction in heating loop; remove Install expansion tank. restriction, check valve stuck or closed Install pressure relief valve; locate outlet valve. over laundry tub or floor drain. cold water at hot faucet Install combination toilet tank/pressure relief valve The most probable cause is reverse flow... -
Page 40: Zone Panel Troubleshooting Steps
Possible defective panel. Consult factory for technical support Download manual or refer to zone panel inside cover for DIP switch setting Verify voltage input to panel. Voltage input must be between 21 and 29 2 zone panel troubleshooting steps Step Action Check(s) Turn off power to zone panel and remove cover. -
Page 41: Zone Panel Troubleshooting Steps
Support 3 zone panel troubleshooting steps Step Action Check(s) Turn off power to zone panel and remove cover. Verify E-Heat switch is in off position, and DIP switches are set properly.The zone panel will not cool if E-Heat is switched on. Ensure supply temp sensor is wired to terminals SA1 and SA2. - Page 42 cooling mode. Cooling will not work if E-Heat is on. When checkout is finished, restore thermostats and retest entire system. If the above steps do not solve the problem, please contact Technical Support. Page 42...
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Page 43: Wiring Diagram (P2 Units)
WIRING DIAGRAM (P2 UNITS) Page 43... -
Page 44: Wiring Diagram (P3 Units)
WIRING DIAGRAM (P3 UNITS) Page 44... -
Page 45: Wiring Diagram (P3 Units)
WIRING DIAGRAM (P2 UNITS) ALTERATIONS HEAT PUMP OPTION . Page 45... -
Page 46: Wiring Diagram (P3 Units)
WIRING DIAGRAM (P3 UNITS) ALTERATIONS HEAT PUMP OPTION . Page 46... -
Page 47: Zone System Applied With A Heat Pump Condensing Unit
ZONE SYSTEM APPLIED WITH A HEAT PUMP CONDENSING UNIT . It is imperative to use standard room thermostats wired to the zone board, DO NOT use heat pump specific thermostats. If our zoned units are applied as a heat pump there are field modifications necessary to allow proper operation;... - Page 48 WITH “W” THE ONLY INPUT FROM THE THERMOSTAT TO THE ZONE CONTROLLER The switch configuration results in the following output to the EQUIPMENT terminals Y & G OUTPUTS to EQUIPMENT - ON W2 O/B - ON W1/EH OUTPUT - OFF After 20 minutes;...
- Page 49 Y & G OUTPUTS to EQUIPMENT - ON W2 O/B - ON W1/EH OUTPUT - OFF After 20 minutes; G OUTPUT stays - ON Y OUTPUT TURNS - OFF W1/EH OUTPUT turns - ON W2 O/B STAYS - ON Summary: On a call for heat the compressor starts and the reversing valve is energized (heat pump condensing unit reversing valve normally in the cool position).
- Page 50 Impact on unit control board 7235; a. The X1 (or X2) relays activate for 20 minutes (depending on wiring). During the 20 minute period, PWM will be at Y1 or Y2 value, again, depending on the wiring. For this reason do not connect to X1 or X2 on the 7235.
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Page 51: Fan Coil Dimensions And Return Air Size And Location
FAN COIL DIMENSIONS AND RETURN AIR SIZE & LOCATION Page 51... - Page 52 Page 52...
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Page 57: Space Constrained Evaporator Coil Sizes
COIL DIMENSIONS All drains are ½” copper. Care must be taken when mounting the Airmax Accessory slab coil to the side or back of a Airmax fan coil. This is acceptable only with the use of a minimum 6” spacer/transition. -
Page 58: 50/70/100 Cooling Coil Filter Frame Cabinet
50/70/100 CCFF-001 COOLING COIL FILTER FRAME CABINET Cooling Coil Filter Frame: Cooling coil filter frames accept a standard dimensional 1” filter. The coil section has dimples pressed into the top and bottom of the cabinet to ensure proper coil slope. 50-CCFF-001 cooling coil/filter frame 20”... -
Page 59: Vertical Air Flow Evaporator Coils
VERTICAL AIR FLOW EVAPORATOR COILS AIRMAX INTAKE PLENUM/A‐COIL MODEL 50‐IPCE‐18A 1.0 Ton Split‐System Component Compatibility ① Airmax ACU Condensing Unit Model ACU‐12e‐1 MAXAIR™ Air Handler Model 30e (LV) Cooling Indoor Airflow CFM 350 ‐ 425 1.5 Ton Split‐System Component Compatibility ①... -
Page 60: 1, 1.5, 2 Ton Evaporator Coil Sizes
The coil comes with a self adjusting thermal expansion valve shipped loose for field installation. An anti-ice control is sold as an option. The anti-ice control must be secured to the suction line as per instructions. Note: All coils are to be sized to match the air handler. -
Page 61: 2, 2.5 Ton Evaporator Coil Sizes
2 AND 2.5 TON EVAPORATOR COIL SIZES (70-IPCE-24/30A) Page 61... -
Page 62: Sample Piping Schematics
SAMPLE PIPING SCHEMATICS Page 62... - Page 63 Page 63...
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Page 66: Terms And Conditions Of Sale
Inc. is \by others. All warranty parts are to be prepaid by the customer. No warranty will be in effect until the equipment is paid for in full. Warranty on all equipment sold to customer may be suspended, at AirMax Technologies Inc.’s disgression, until the customers account is in good standing. -
Page 67: Warranty Registration
Date of Purchase _____________________ Date of Start up _____________________ Installer ______________________________________________________________ Purchased From: Company Name __________________________________________________________ Contact Name ____________________________________________________________ Signature _________________________________ Date ______________________ To insure your warranty protection, please complete and return this form to AirMax Technologies Inc. attention Product Registration. Page 67... -
Page 68: Warranty Parts Request
Warranty Parts Request Form E-mail: info@airmaxtechnologies.com Web Site: www.airmaxtechnologies.com Homeowner Name: Date: Address: Unit # City: Prov. Postal Code: Phone # Other # Contractor Name: Address: Unit # City: Prov. Postal Code: Phone # Other # Email: Distributor / Rental Provider Name: Address: Unit # City:...
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