1. Manuals
  2. Brands
  3. IBC Manuals
  4. Air Handlers
  5. AHU Series
  6. Installation and operating manual

IBC AHU Series Installation And Operating Manual

Air handling unit
Hide thumbs Also See for AHU Series:
Table of Contents

Advertisement

Quick Links

Download this manual
Installation and
Operating Manual
AHU
SERIES
Air Handling Unit
AHU 800

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AHU Series and is the answer not in the manual?

Questions and answers

Related Manuals for IBC AHU Series

Summary of Contents for IBC AHU Series

  • Page 1 Installation and Operating Manual SERIES Air Handling Unit AHU 800...

  • Page 3: Table Of Contents

    Contents Safety information Specifications Heating capacity Cabinet and air supply dimensions Thermostat connections 1.0 Introduction 1.1 Standard features and benefits 1.2 Conformity 2.0 Installation 2.1 Locating the unit 2.1.1 Conditioned space 2.1.2 Un-conditioned space 2.1.3 New construction 2.1.4 Mobile home 2.1.5 Closet 2.1.6 Garage 2.1.7 Serviceability...
  • Page 4 3.4 Operating the unit with a mobile app 3.4.1 Loading IBCconnect 3.4.2 Using the app to connect to IBC's AHU WiFi 3.4.3 Using the app to view the AHU's information 3.5 Configuring settings and parameters via a USB text file 3.6 Sequence of operation...
  • Page 5 Air handling unit - parts diagram...
  • Page 6 This page is intentionally left blank.

  • Page 7: Safety Information

    Safety information Safety information Manual safety markings Danger Warning Points out an immediate hazardous Points out a potential hazardous situation situation that must be avoided to that must be avoided to prevent serious injury or death. prevent serious injury or death. Caution Note Points out a potential hazardous...
  • Page 8 Do not operate the air handling unit if it is not working properly, or if it has been damaged or dropped. Installation, start-up and servicing of IBC's air handling units must be done with care and attention, and should only be performed by competent, qualified, licensed and trained plumbing and heating technicians.

  • Page 9: Specifications

    Specifications Specifications AHU 800 Max. water temperature (°F/C°) 195 / 90 Coil performance at 180°F (Btu/hr) 66,800 Water pipe connections (inches) ¾ External static pressure (" wc) Max. operating water pressure (PSI) Width (inches) 17.6 Depth (inches) Height (inches) Supply air opening width (inches) Supply air opening depth (inches) 19.5 Left and right return air opening height (inches)

  • Page 10: Heating Capacity

    Section: Specifications Heating capacity AHU 800 - Heating Capacity (Ent Dry Bulb 70°F) @ 800 CFM Entering Water Temperature 3 GPM 4 GPM 5 GPM 195°F (90°C) 72.9 MBH 76.9 MBH 79.4 MBH 190°F (88°C) 65.7 MBH 70.2 MBH 73 MBH 180°F (82°C) 60 MBH 64.1 MBH...
  • Page 11 Cabinet and air supply dimensions Figure 3 Top supply air opening Figure 4 Bottom return air opening Figure 5 Left side return air opening Figure 6 Right side return air opening...

  • Page 12: Thermostat Connections

    Section: Specifications Thermostat connections Three types of thermostats are compatible with the unit: conventional, power stealing, and OpenTherm. Low Voltage Terminal Description Notes 24V power Power to the low voltage thermostat. Heating Stage 1 Thermostat connects R to W1 for first stage heating. Note: A jumper between W1 and W2 will initiate W2 speed.
  • Page 13 De-Humidifier 24VAC powered Closes to activate the de- De-Humidifier humidifier. OpenTherm OpenTherm Master To X-13 (1-2) on boiler (IBC The air handling unit SFC/SFB series) (master) communicates to (controls) the boiler (slave). OpenTherm Slave From OpenTherm thermostat The thermostat (master) controls the air handling unit (slave).
  • Page 14 This page is intentionally left blank.

  • Page 15: Introduction

    1.0 Introduction The IBC air handling unit is designed for ducted heating and cooling. The unit provides up to four mounting options for flexibility and ease of installation. Return air duct connections can be connected left, right, and bottom to suit the unit's mounting position. For information on mounting positions and sizing, see...

  • Page 16: Conformity

    Included - sensors for supply air, return air, supply water, return water, humidifier, de- humidifier, and frost protection Not included - (optional) outdoor sensor (IBC Part # 240-025), air conditioning coil supply, air sensor kit Maximum return air temperature 122°F (50°C) 1.2 Conformity...

  • Page 17: Installation

    2.0 Installation Inspect shipment carefully for signs of damage. All equipment is carefully inspected and packed. IBC’s responsibility ceases upon delivery of the air handling unit to the carrier. Any claims for damage or shortage must be filed immediately against the carrier. No claims for variances or shortages will be allowed by the manufacturer.

  • Page 18: Garage

    Section: Installation Figure 7 View from top of air handling unit Figure 8 Front view of air handling unit in a closet and duct in a closet with ducting on the left Orientation Clearance to Combustible Clearance for servicing 6" 6"...

  • Page 19: Serviceability

    2.1.7 Serviceability 2.1.7 Serviceability Install the unit so that the front access panel is readily accessible for servicing. The front panel must be removed for access to the filter for replacement and access to the control board for wiring and setup. For more information on maintenance, see Service and maintenance on page 53.

  • Page 20: Unit Positioning

    Section: Installation 2.2.2 Unit positioning With IBC's air handling unit, you can install the unit so the air flows in a vertical up-flow or down-flow direction, or in a horizontal left or right direction. Figure 11 : Figure 12 :...

  • Page 21: Mounting A Unit On The Wall

    2.2.4 Mounting a unit on the wall Figure 15 : Figure 16 : Air conditioning/heat pump cased coil mounted Heat pump cased coil on the bottom of the unit on on top of the unit - upflow the return side - upflow 2.2.4 Mounting a unit on the wall Mount the unit with a pair of field-supplied wall brackets.

  • Page 22: Repositioning The Air Filter Brackets

    Section: Installation 2.2.5 Repositioning the air filter brackets All units are delivered with the filter positioned for a unit installed with a left or bottom return air supply opening. Should you install the unit with a right return air supply orientation for ducting you will need to reposition the air filter brackets in the opposite position.
  • Page 23 2.2.5 Repositioning the air filter brackets Remove the wing nuts from the lower right Reposition the top and bottom brackets bracket. on the opposite side. Slide the filter into the repositioned brackets.

  • Page 24: Duct Work

    Section: Installation 2.3 Duct work Ducting design and installation should adhere to SMACNA and/or ASHRAE guidelines. Install the ducting system to NFPA 90B (latest edition). Adhere to the following: Size the supply air plenum duct fitting to the size of the unit's supply air opening, and extend for 3' above the unit.

  • Page 25: Ducting Installed In Conditioned Space

    2.3.2 Ducting installed in conditioned space Supply / Return Air Trunk Size CFM at .3"wc external static pressure (galvanized duct) Round Rectangular CFM range 8" 8 x 6 160-190 8 x 7 190-230 9" 8 x 8 230-275 10" 10 x 8 275-360 11"...

  • Page 26: Connecting The Unit To The Boiler

    Section: Installation Figure 18 Shears' opening 2.4 Connecting the unit to the boiler Generally it’s best to place the unit as close as practical to the boiler. If placing the unit away from the boiler, ensure the piping system is designed to allow the easy removal of air from the boiler piping and easy flushing of the system.
  • Page 27 2.4.1 Sizing pumps Integral pump Check valve (field supplied) Fill station or glycol feeder (field supplied) Figure 19 Basic installation: boiler / water heater with pump Air Handler Coil Head Loss Flow rate (gpm) Head loss @ flow (ft) 11.3 16.3 Table 6 Air handler coil head loss at 180°F (82°C)

  • Page 28: Using Propylene Glycol

    10 feet between the unit and the tankless water heater using ¾" copper piping. The table below provides pipe sizing specifications for IBC's tankless water heater. Refer to other manufacturer's manuals for correct sizing of pipes.
  • Page 29 2.5 Connecting the unit to a tankless water heater Connection to the space heating circuit through a drinkable water system as shown may be prohibited by local code. Non-ferrous pump (sized for combined head loss of boiler/water heater, air handler - interconnecting piping) Check valve (may be built into pump) Potable water expansion tank...

  • Page 30: Electrical Connections

    Section: Installation 2.6 Electrical connections All electrical wiring to the boiler (including grounding) must conform to local electrical codes and/or the National Electrical Code, ANS/NFPA No. 70 – latest edition, or the Canadian Electrical Code, C22.1 - Part 1. In addition, you should refer to the boiler's installation manual. The air handling unit control board diagram below shows the various wiring connections such as the thermostat, accessories, heat pump, and external pump.

  • Page 31: Wiring Of The External Pump And 120Vac Line

    2.6.1 Wiring of the external pump and 120VAC line 2.6.1 Wiring of the external pump and 120VAC line You will need to use a 3 mm blade screwdriver to wire the external pump and the 120VAC line. The image below illustrates inserting a screwdriver into the slot at the back of the terminal block. This opens the metal slot (at the front of the block) for insertion of a wire.
  • Page 32 Section: Installation An internal time delay is preset, enabling the W2 blower speed after a preset period of time. A jumper between W1 and W2 will initialize this speed without the time delay. Figure 23 Single-stage heating, on-demand heat source...
  • Page 33 2.6.2 Connecting line voltage - examples for different scenarios An internal time delay is preset enabling the W2 blower speed after a preset period of time. A jumper between W1 and W2 will initialize this speed without the time delay. Optional Figure 24 Single-stage heating with fan control, on-demand heat source...
  • Page 34 Section: Installation An internal time delay is preset enabling the W2 blower speed after a preset time period. A jumper between W1 and W2 will initialize this speed without the time delay. Optional Figure 25 Single-stage heating, single-stage cooling, fan control, on-demand heat source...
  • Page 35 2.6.2 Connecting line voltage - examples for different scenarios An internal time delay is preset enabling the W2 blower speed after a preset duration of time. A jumper between W1 and W2 will initialize this speed without the time delay. Optional Not used Reversing valve (O or B) is selectable via the blower control interface.
  • Page 36 Section: Installation Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heating Figure 27 Single-stage heating from boiler, primary/secondary piping...
  • Page 37 2.6.2 Connecting line voltage - examples for different scenarios Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heat Figure 28 Single-stage heating with fan control, boiler with primary/secondary piping...
  • Page 38 Section: Installation Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heat. Figure 29 Single-stage heating, single-stage cooling, boiler with primary/secondary piping...
  • Page 39 2.6.2 Connecting line voltage - examples for different scenarios Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heat. Timer must close TT to create a boiler-on command in the HP mode. This time delay is initialized after establishing a W1 signal.
  • Page 40 Section: Installation Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heat. Reversing valve (O or B) is selectable via the blower control interface W1 = heat pump, W2 = energize TT for boiler - removes heat pump Not used Figure 31 Single-stage heat pump with boiler backup, primary/secondary piping (2-stage thermostat)
  • Page 41 2.6.2 Connecting line voltage - examples for different scenarios Required if boiler does not have an integral pump. See table Dry contact from air handler to boiler / enables call for heat W1 = boiler + low fan, W2 = boiler + high fan Not used Figure 32 Two-stage cooling with boiler heating (2-stage thermostat)
  • Page 42 Section: Installation Required if boiler does not have an integral pump Dry contact from air handler to boiler / enables call for heat W1 = boiler + low fan, W2 = boiler + high fan Not used Figure 33 Single-stage cooling with boiler heating (2-stage thermostat)

  • Page 43: Operation

    3.0 Operation Once installation of the unit is completed, and before operating the unit, review the following guidelines: Checklists for electrical conditions, ducting and water connections Default fan speed settings Operating the unit with a mobile app Sequence of operation LED status indicators.

  • Page 44: Default Settings

    Section: Operation Checking ducting connections Check □ Duct insulation is installed and sealed as required. □ Inspect the filter, return air ducting and registers to ensure free air movement. Checking boiler / water heaters settings Check □ Ensure the water temperature to the heating coil is sufficient to meet the heating demands of the space.

  • Page 45: Operating The Unit With A Mobile App

    3.4 Operating the unit with a mobile app All AHU units come set with default factory settings. IBC's free mobile app "IBCconnect" (Android or iOS app) enables users to monitor and adjust default settings in a single air handling unit. This app is compatible only with Android and iOS devices and with the IBC AHU.

  • Page 46: Loading Ibcconnect

    IBCconnect app and the IBC air handler. IBC's AHU has a WiFi access point built into it. Your device needs to be connected to IBC's AHU WiFi point before the app can be used to control or monitor IBC's air handler. This is done through the app's WiFi network settings.
  • Page 47 The WiFi network screen appears. The IBC-AHU will appear in the device’s list of WiFi available networks as "IBC-AHU-xxxxx", where "xxxxx" is the serial number of the controller in the IBC-AHU. If there are multiple IBC-AHUs in the area, the unit with the strongest signal will likely be the controller you want to connect to.
  • Page 48 The IBC-AHU will appear in the device’s list of WiFi Access Points as “IBC-AHU-xxxxx”, where “xxxxx” is the serial number of the controller in the IBC-AHU. If there are multiple IBC-AHU’s in the area, the unit with the strongest signal will likely be the controller you want to connect to.

  • Page 49: Using The App To View The Ahu's Information

    ON-OFF-OFF-OFF pattern when connected. 7. Exit from the "Setting" screen and open the IBCconnect app again. 8. Check your device is connected to the IBC-AHU-xxxxx WiFi connection. This will display the landing page. The landing page that appears after starting IBCconnect will depend on the device and whether you have connected to IBC's AHU WiFi.
  • Page 50 Section: Operation 2. Tap Allow and then OK to grant permission. The AHU app Status screen is displayed showing the air handler's factory default settings. You can navigate to the Home page, and begin adjusting settings.

  • Page 51: Configuring Settings And Parameters Via A Usb Text File

    Note: If device is not maintaining a connection with IBC's AHU WiFi If the IBCconnect app is unable to maintain a connection to the IBC AHU WiFi, the IBCConnect app footer will show an "X" icon above WiFi. It is likely the device is attempting to perform uploads in the background.

  • Page 52: Cooling Mode

    Section: Operation When a demand for heat is satisfied, the system: Opens TT (or Heat 1) to remove the boiler's call for heat. Continues to operate the fan for 45 seconds; also operates the pump contacts for 30 seconds. 3.6.2 Cooling Mode Upon a call for cooling from the thermostat: R to Y1 or Y2 is energized The fan is energized and:...

  • Page 53: Humidification Mode

    3.6.5 De-humidification Mode 3.6.5 De-humidification Mode Upon a call for de-humidification from the thermostat: G to W or Y is energized. The de-humidifier's contacts (24V output) will close. 3.6.6 Freeze Protection Mode Freeze protection mode monitors the return air temperature into the air handling unit. If the internal return air temperature sensor detects a return air temperature below 41°F the air handling unit will energize the fan , the pump contacts and the TT (boiler) contacts to create a call for heat.

  • Page 54: Built-In Diagnostics Feature

    Section: Operation Built-in diagnostics feature The AHU contains a built-in diagnostic feature that enables you to obtain information on settings, faults, and errors. To view an air handler's diagnostics: 1. Insert a USB stick into the controller, wait approximately 10 seconds, and then remove the USB stick.

  • Page 55: Service And Maintenance

    4.0 Service and maintenance The IBC air handling unit is designed for durability and easy access to the main components: control board, fan assembly, hot water coil assembly, and filter. Over time, components such as sensors may require replacing and servicing. Note that failure to use the correct procedures or parts could result in unsafe operation.
  • Page 56 Section: Service and maintenance Remove the two Molex plugs from the control Detach the cable and grommet. board. Slide out the fan assembly. Note When you install the replacement fan assembly: Ensure that you install the fan assembly, so that the fan cables can reach the control board, that is, the cables are positioned towards the front left of the fan assembly.

  • Page 57: Replacing The Hot Water Coil Unit

    4.2.2 Replacing the hot water coil unit 4.2.2 Replacing the hot water coil unit Remove the two screws from the front cover, and set Carefully unclip the three aside. cables, and lean them away from the hot water coil unit. Remove the nuts and bolts.
  • Page 58 Section: Service and maintenance Resist. Resist. Temp. °F/°C Temp. °F/°C Ω – Ohm Ω – Ohm 0 / -18 85,362 100 / 38 5,828 5 / -15 72,918 105 / 41 5,210 10 / -12 62,465 110 / 43 4,665 15 / -9 53,658 115 / 46...
  • Page 59 This page is intentionally left blank.
  • Page 60 Section: Service and maintenance Air handling unit - parts diagram...
  • Page 61 Air handling unit - parts diagram Item Number P-Kit Number Description P-1000 Door panel P-1010 Air filter size 25 x 16 x 1 P-1008 Door switch, SPST-NO. 15A 125V Wiring harness P-1011 Supply water temperature sensor P-1012 Temperature sensor and grommet P-1011 Return water temperature sensor P-1003...
  • Page 62 Revision history R0 (June 2019) Initial release. R1 (July 2019) Updated wiring diagrams and made minor edits. R2 (October 2019) Updated wiring diagrams, added LED status indicators, and information on using a text file to modify settings in multiple air handlers. R3 (November) Added table of basic default settings and other minor changes.
  • Page 63 IBC Technologies Inc. 8015 North Fraser Way Burnaby, BC Canada V5J 5M8 Tel: 604-877-0277 Fax: 604-877-0295 Toll Free: 1-844-432-8422 www.ibcboiler.com November, 2019 ©IBC Technologies Inc. 2019 120-324E-R3...

This manual is also suitable for:

Ahu 800

Table of Contents