Amana AVH09 - User Manual

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Summary

Attention Installing Personnel

Important Note to the Servicer

Electrical Data

Electrical Requirements

Details on wire size, fuse/breaker, grounding, and wire sizing specifications.

Electrical Rating Table

Recommended branch circuit sizes and AWG wire gauges for different amperage ratings.

Supply Air Flow Data

Indoor CFM & External Static Pressure

Table showing indoor airflow (CFM) based on fan speed and external static pressure.

VTAC Required Minimum Clearances

Building Exterior Unit Opening Requirements

Specifies minimum clearances for outdoor installation, side-by-side, and grouped units.

Grill Clearance Requirements

Guidelines for proper spacing from the VTAC exterior louvered grill for obstructions.

Installation Overview and Dimensional Data

Dimensions

Table of chassis and rough opening dimensions for AVH09, AVH12, AVH18, and AVH24 models.

Exterior Wall Adapter Cut-Out Dimensions

Specifies the exact rough opening size required for the exterior wall adapter installation.

CLOSET INSTALLATIONS

Front Installation-Top View

Diagram and dimensions for closet installation from the front, showing required clearances.

Left Installation-Top View

Diagram and dimensions for closet installation from the left, showing required clearances.

Right Installation-Top View

Diagram and dimensions for closet installation from the right, showing required clearances.

Final Wall Adapter and Architectural Louver Installation

Wall Adapter Installation

Step 1 - Outside Wall Adapter Half

Instructions for preparing and fitting the external part of the wall adapter into the rough opening.

Step 2 - Inside Wall Adapter Half

Louver Installation

Installation of the louver PRIOR to Wall Adapter installation

Instructions for installing the architectural louver prior to the wall adapter assembly.

Installation of the louver AFTER the installation of Wall Adapter on elevated floors

Final Wall Adapter and Architectural Louver Installation

Primary Drain Connection and Location

DRAIN PAN INSTALLATION

Cut Opening in Gasket

Procedure for cutting and removing a section of the plenum gasket for drain pan mounting.

Seal and Set Pan

Steps for applying sealant and positioning the drain pan against the plenum flange.

Install Drain Pan

Instructions for attaching the drain pan to the closet floor using pre-drilled mounting holes.

Install Drain Plug

How to plug the unused drain connection ports on the drain pan.

Indoor Return Air Grille and Ductwork Installation

Ductwork

Guidelines for designing the supply duct system using recognized methods and friction rates.

Chassis Installation

Steps for inserting the unit chassis into the wall adapter and ensuring seal contact.

Remote Thermostat and Low Voltage Control Connection

Remote Thermostat

Connecting a single-stage heat/cool wall-mounted thermostat to the VTAC unit.

Front Desk Control Terminals

Connecting an external switch for controlling unit power from a central desk.

Chassis Operation

Fresh Air Door

Operation of the chassis's "intake" system for delivering outdoor air via a slide mechanism.

Low Ambient Compressor Cut Out

How thermistor feedback prevents compressor operation at low suction temperatures.

Room Freeze Protection

Unit's automatic response to prevent indoor room freezing by cycling high fan and electric heat.

Chassis Final Connections

Steps for making final ductwork and electrical connections before operating the chassis.

Routine Maintenance

Replace Air Filter

Instructions for replacing the air filter to maintain efficiency and prevent coil damage.

To Remove the Chassis from the Closet:

Step-by-step guide to safely disconnect and remove the unit chassis from its installation.

Inspect and Clean Indoor-air Coil

Inspect Outdoor-Air (OA) Intake and Exhaust

Inspect and Clean Condensate Drain

Electronic Control Error Code Diagnostics and Test Mode

Error Code Diagnostics

How to access, view, and clear error codes displayed on the VTAC unit's control panel.

ERROR CODES AND ALARM STATUS

Unit Control Panel

Explanation of the unit control panel display, including error codes, history, and maintenance indicators.

Error Code Table

A comprehensive table listing all error codes, their associated problems, and recommended actions.

Summary

Attention Installing Personnel

Important Note to the Servicer

Electrical Data

Electrical Requirements

Details on wire size, fuse/breaker, grounding, and wire sizing specifications.

Electrical Rating Table

Recommended branch circuit sizes and AWG wire gauges for different amperage ratings.

Supply Air Flow Data

Indoor CFM & External Static Pressure

Table showing indoor airflow (CFM) based on fan speed and external static pressure.

VTAC Required Minimum Clearances

Building Exterior Unit Opening Requirements

Specifies minimum clearances for outdoor installation, side-by-side, and grouped units.

Grill Clearance Requirements

Guidelines for proper spacing from the VTAC exterior louvered grill for obstructions.

Installation Overview and Dimensional Data

Dimensions

Table of chassis and rough opening dimensions for AVH09, AVH12, AVH18, and AVH24 models.

Exterior Wall Adapter Cut-Out Dimensions

Specifies the exact rough opening size required for the exterior wall adapter installation.

CLOSET INSTALLATIONS

Front Installation-Top View

Diagram and dimensions for closet installation from the front, showing required clearances.

Left Installation-Top View

Diagram and dimensions for closet installation from the left, showing required clearances.

Right Installation-Top View

Diagram and dimensions for closet installation from the right, showing required clearances.

Final Wall Adapter and Architectural Louver Installation

Wall Adapter Installation

Step 1 - Outside Wall Adapter Half

Instructions for preparing and fitting the external part of the wall adapter into the rough opening.

Step 2 - Inside Wall Adapter Half

Louver Installation

Installation of the louver PRIOR to Wall Adapter installation

Instructions for installing the architectural louver prior to the wall adapter assembly.

Installation of the louver AFTER the installation of Wall Adapter on elevated floors

Final Wall Adapter and Architectural Louver Installation

Primary Drain Connection and Location

DRAIN PAN INSTALLATION

Cut Opening in Gasket

Procedure for cutting and removing a section of the plenum gasket for drain pan mounting.

Seal and Set Pan

Steps for applying sealant and positioning the drain pan against the plenum flange.

Install Drain Pan

Instructions for attaching the drain pan to the closet floor using pre-drilled mounting holes.

Install Drain Plug

How to plug the unused drain connection ports on the drain pan.

Indoor Return Air Grille and Ductwork Installation

Ductwork

Guidelines for designing the supply duct system using recognized methods and friction rates.

Chassis Installation

Steps for inserting the unit chassis into the wall adapter and ensuring seal contact.

Remote Thermostat and Low Voltage Control Connection

Remote Thermostat

Connecting a single-stage heat/cool wall-mounted thermostat to the VTAC unit.

Front Desk Control Terminals

Connecting an external switch for controlling unit power from a central desk.

Chassis Operation

Fresh Air Door

Operation of the chassis's "intake" system for delivering outdoor air via a slide mechanism.

Low Ambient Compressor Cut Out

How thermistor feedback prevents compressor operation at low suction temperatures.

Room Freeze Protection

Unit's automatic response to prevent indoor room freezing by cycling high fan and electric heat.

Chassis Final Connections

Steps for making final ductwork and electrical connections before operating the chassis.

Routine Maintenance

Replace Air Filter

Instructions for replacing the air filter to maintain efficiency and prevent coil damage.

To Remove the Chassis from the Closet:

Step-by-step guide to safely disconnect and remove the unit chassis from its installation.

Inspect and Clean Indoor-air Coil

Inspect Outdoor-Air (OA) Intake and Exhaust

Inspect and Clean Condensate Drain

Electronic Control Error Code Diagnostics and Test Mode

Error Code Diagnostics

How to access, view, and clear error codes displayed on the VTAC unit's control panel.

ERROR CODES AND ALARM STATUS

Unit Control Panel

Explanation of the unit control panel display, including error codes, history, and maintenance indicators.

Error Code Table

A comprehensive table listing all error codes, their associated problems, and recommended actions.

This document describes the VTAC Single Package Vertical Air Conditioning System (AVH 9,000-24,000 Btu/hr), an air conditioning unit designed for vertical installation. It serves as both an installation instruction and owner's manual, emphasizing safety, proper installation, and routine maintenance for optimal performance and longevity.

Function Description

The VTAC system is a single-package vertical air conditioning unit primarily designed for cooling and heating residential or commercial spaces. It is capable of delivering between 9,000 and 24,000 Btu/hr, making it suitable for various room sizes and climate control needs. The unit is designed for installation on an outside wall, with options for different wall adapter depths to accommodate various wall thicknesses. It features a fresh air door, allowing for the intake of up to 60 CFM of outdoor air, contributing to improved indoor air quality. The system can be controlled via a remote wall-mounted thermostat, offering flexibility in operation modes (single-stage heat/cool, auto, or manual changeover). Additionally, it includes provisions for connection to an external switch, such as a central desk control system door switch, to control power to the unit. The VTAC also has the capability to control a 24VAC relay to activate an auxiliary or transfer fan.

Important Technical Specifications

Dimensions and Clearances:

Chassis Dimensions (W x D x H):
- AVH09/AVH12: 23 1/8" x 23 1/8" x 32 1/4"
- AVH18: 23 1/8" x 23 1/8" x 47 15/16"
- AVH24: 23 1/8" x 23 1/8" x 51 7/8"
Exterior Rough Opening (W x H): 24 5/8" x 30 7/8"
Closet Rough Opening (W x H): 27" x 60 3/4"
Minimum Clearances:
- Units side-by-side: 12" apart
- Three or more units: 60" between units or pairs of units
- Units sharing a floor with adjacent, outset units: 64" minimum distance
- Vertical clearance between units: 60"
- Units on bottom floor: 6" off the ground
- Obstructions from exterior louver: 72" (major), 24" (minor)
- Minimum 3" clearance on all three sides for air flow, service, and installation.
- Recommended 6" clearance on the side where the primary condensate is plumbed.

Electrical Data:

Wire Size: Use ONLY wire size recommended for single outlet branch circuit. Copper conductors ONLY.
Fuse/Circuit Breaker: Use ONLY type and size fuse or HACR circuit breaker indicated on the unit's rating guide.
Grounding: Unit MUST be grounded from branch circuit to unit or through a separate ground wire.
Recommended Branch Circuit Sizes (AWG Wiring Size):
- 15A: 14 AWG
- 20A: 12 AWG
- 30A: 10 AWG
- Based on 100' or less of copper, single insulated conductor at 60°C.
All 230/208 chassis must be hard-wired with a properly sized breaker. HACR type breakers are recommended.

Supply Air Flow Data (Indoor CFM & External Static Pressure):

AVH09/AVH12:
- 0.10" ESP: 430 (Low) - 490 (High) CFM
- 0.15" ESP: 410 (Low) - 470 (High) CFM
- 0.20" ESP: 360 (Low) - 440 (High) CFM
- 0.25" ESP: 310 (Low) - 400 (High) CFM
- 0.30" ESP: 260 (Low) - 350 (High) CFM
AVH18:
- 0.10" ESP: 600 (Low) - 750 (High) CFM
- 0.15" ESP: 550 (Low) - 720 (High) CFM
- 0.20" ESP: 510 (Low) - 680 (High) CFM
- 0.25" ESP: 460 (Low) - 650 (High) CFM
- 0.30" ESP: 420 (Low) - 600 (High) CFM
Maximum external static pressure: 0.3" W.C.

Control Interface Definition:

C: Common Ground Terminal
GH: Call for High Fan
GL: Call for Low Fan
B: Call for Heat Pump (Reversing Valve)
Y: Call for Compressor
W: Call for Heating (Electric)
R: 24VAC to Wall Thermostat
Auxiliary fan relay: 24VAC @ 100mA or less.

Maximum Wire Length for Desk Control Switch:

24 AWG: 400 ft.
22 AWG: 600 ft.
20 AWG: 900 ft.
18 AWG: 1500 ft.
16 AWG: 2000 ft.

Filters:

AVH09, AVH12, AVH18: 20" x 14"
AVH24: 20" x 18"

Usage Features

Installation:

Wall Adapter: The system utilizes a wall adapter (Parts A and B) for installation into a rough opening. The adapter is not load-bearing; a header must be built above the opening. Sealant and fasteners are required for a water-tight seal.
Louver: An architectural louver (AVAGK01CB) is installed on the exterior. It can be pre-installed with the wall adapter or installed after the wall adapter on elevated floors.
Drain Pan (AVH18-AVH24 "H" series units): A drain pan (AVDK18-2401B) is required for these units, installed on the closet floor. It features left and right-hand drain connections, with one plugged using the factory-supplied plug. Proper sealant is crucial to prevent leaks.
Primary Drain Connection (AVH09 & AVH12): These units connect to one of three 3/4" FPT connections (left, right, or rear) on the unit base pan. A field-supplied drain system with a trap is recommended, pitched at 1/4" downward slope per foot. Unused ports must be plugged.
Ductwork: A supply duct system must be attached, designed for a maximum friction rate of 0.3" water column. Return air must NOT be ducted; units require a free return air configuration.
Chassis Installation: The chassis is inserted into the wall adapter, ensuring the adapter divider gasket contacts the plastic condenser baffle. Two or more people are required due to weight.

Operation:

Remote Thermostat: All units are factory-configured for single-stage heat/cool remote wall-mounted thermostats.
Desk Control Terminals: Provisions for external switch connection (D1 and D2 terminals) to control unit power.
Auxiliary Fan Control: F1 and F2 terminals on the control board allow connection to a 24VAC relay for an auxiliary or transfer fan.
Fresh Air Door: A slide mechanism on the front of the chassis allows opening (left) or closing (right) for outdoor air intake (up to 60 CFM).
Low Ambient Compressor Cut Out: Prevents compressor operation at low suction temperatures via thermistor feedback.
Room Freeze Protection: Monitors indoor room conditions; if temperature falls below 40°F, the unit cycles on high fan with the electric heater, regardless of mode.

Electronic Control Error Code Diagnostics and Test Mode:

The electronic control continuously monitors unit operation and stores error codes.
Access error code menu by pressing 'ENTER'. Toggle between codes with 'SCROLL'. Clear codes by pressing 'ENTER' and 'SCROLL' for three seconds. Exit without losing codes by pressing 'LOW FAN'.
The display shows a 4-digit code: first two digits for error code (1-24), next two for history count (up to 99). A maintenance icon (wrench) illuminates when maintenance is needed.

Maintenance Features

Routine Maintenance:

Air Filter Replacement: A dirty air filter reduces efficiency and can damage the indoor-air coil. The filter should be replaced when dirty. To replace, slide the filter clear of the rail, remove, and install a new disposable filter. Do not operate the system without a filter or block the return air opening.
Indoor-air Coil Inspection and Cleaning: Minor lint and dirt accumulations on the indoor-air coil can be vacuumed away with a brush attachment. Care must be taken to avoid bending aluminum fins. Bent fins should be straightened with a special fin tool.
Outdoor-Air (OA) Intake and Exhaust Inspection: Ensure the unit's outdoor-air intake and exhaust paths remain clear of debris, snow, or ice. Blockages reduce efficiency and can damage the unit.
Condensate Drain Inspection and Cleaning: Periodically check the condensate drain for blockages and clean any foreign matter. The entire drain line must be protected from freezing.

Servicing / Chassis Quick Changeouts:

The chassis is designed for quick disconnect and changeout.
For minor electrical service, the control box cover lifts straight up after screws and disconnect head are removed.
For major electrical, refrigeration, and fan service, the chassis may be removed from the utility closet.
To Remove the Chassis from the Closet:
1. Switch the wall thermostat off.
2. Pull the Power Disconnect located in the front of the chassis.
3. Disconnect the power coming into the unit from the main breaker panel or closet-mounted disconnect.
4. Disconnect the electrical connection.
5. Disconnect the duct work.
6. Slide the chassis out of the wall adapter.
7. Lift the chassis out of the utility closet.

Warranty:

All warranty service work must be done by an authorized servicer. Refer to the Product Warranty certificate for details.

Safety Precautions:

HIGH VOLTAGE WARNING: Disconnect all power before servicing or installing. Multiple power sources may be present. Failure to do so can cause property damage, personal injury, or death.
EXCESSIVE WEIGHT HAZARD: Use two or more people when installing the air conditioner to prevent injury.
CUT/SEVER HAZARD: Some edges may be sharp; use gloves or other hand protection when handling the unit.
WIRING WARNINGS: Do not alter the power cord, remove LDCI or AFCI circuit board, replace terminals, or use a damaged cord. Unit must be hard-wired with a factory-supplied kit. Do not use an extension cord. Use only copper conductors. Do not install with a stretched or strained power cord. Wiring must be properly polarized and grounded.
IMPORTANT NOTE TO THE OWNER: This manual is for qualified, professionally trained HVAC technicians only.
IMPORTANT NOTE TO THE SERVICER: Read the manual thoroughly and adhere to all specific items and precautions.
PROP 65 WARNING: For California consumers, this product may cause cancer and reproductive harm (www.P65Warnings.ca.gov).