Airmax MaxAir 50e LV - User Manual

Brochure I0607B – Rev. 04-03-19
209 Citation Drive, Units 5 & 6
Concord, ON, Canada, L4K 2Y8
Telephone (905) 264-1414
Fax (905) 264-1147
E-mail: info@airmaxtechnologies.com
Web Site: www.airmaxtechnologies.com
MaxAir 30(e), 50(e), 70(e), 100(e) Low
Velocity (LV) 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.
CERTIFIED
FAN COIL UNITS

Summary

Equipment Selection and Sizing

Selecting the Fan Coil

Guidance on selecting the correct MaxAir™ fan coil model based on heat load.

Installation

Air Handler Mounting

Instructions for mounting the air handler in various configurations, including strap use.

Domestic Water Piping

Guidelines for installing 1/2" sediment faucet, isolation valves, and copper piping.

Cooling Coil & TX Valve

Details on accessory slab cooling coil, factory-installed TX valve, and drain pan requirements.

Fan Coil Placement

Guidelines for placing the fan coil unit based on layout and system design.

DX Refrigerant Cooling

Installing fan coil for DX refrigerant cooling, ensuring proper condensate drainage.

Condensing Unit

Locating the outdoor unit and maintaining recommended clearances for airflow.

Freezestat and TX Valve

Proper installation and insulation of TXV bulb and frost thermostat control.

Refrigeration Piping

Guidelines for installing refrigeration piping, including insulation and traps.

Evacuating and Charging

Procedures for pressurizing, leak testing, and charging the refrigeration system.

Electrical (Standard Units)

Connection Locations

Terminal strip locations for electrical connections like power, pump, and thermostat.

PSC Motor Control Board

ELECTRICAL (MAXe UNITS)

Microcontroller-based volume controller for fan coils, furnaces, and other systems.

Control System Inputs

Details on 0-10VDC commands and discrete 24VAC inputs for system control.

Discrete;Variable (0-10 V) Mode Input Selector (SW3-1)

Configuring the input mode for discrete or 0-10V variable control.

One and Two Stage Heating System Selector

Configuring single-stage and two-stage heating system operation.

Timed 2-Stage Heat Switch (SW1-1) ON

Setting up timed two-stage heating operation with thermostat inputs.

Start-Up Procedures

Sequence of Operation (Standard Units)

Sequence of Operation (MAXe Units)

Service and Maintenance

Filter

Importance of filter maintenance and potential warranty voiding.

Troubleshooting

External Pump Does Not Run

Troubleshooting steps for a pump that fails to start or sticks.

External Pump is Noisy at Start-up

Addressing noise issues with the external pump, often related to air.

Insufficient or No Heat

Diagnosing and resolving issues with insufficient or no heat output.

Fan Runs for Cooling but Not Heating

Resolving issues where the fan operates for cooling but not heating.

Heating During Off Cycle

Investigating causes for heating during the off cycle, like thermal siphoning.

Wiring Diagram (Standard Units)

Wiring Diagram (MAXe Units)

Sample Piping Schematics

1. Open Loop System Diagram

Diagram illustrating an open loop system for heating and domestic hot water.

2. Closed Loop System Diagram

Diagram showing a closed loop system for heating and domestic hot water.

Airmax MaxAir 50e LV Specifications

General

Model	MaxAir 50e LV
Cooling Capacity	50, 000 BTU/h
Voltage	208-230V
Motor Type	ECM
Category	Air Handler
Airflow	2000 CFM
Phase	Single
Filter Type	MERV 8