MS 021 HVAC.pdf

MATERIAL APPROVAL SUBMITTAL

(See Instructions on Reverse)

Form Approved OMB No 9000-0062

Expires May 31, 2005

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Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project OMB No 9000-0062, Washington DC 20503. Please DO NOT RETURN your form to either of these addresses. Send your completed form to: SAF/AQCP, 1060 Air Force Pentagon, Washington DC

TO: (Contracting Officer) FROM: (Contractor) DATE

CONTRACT NUMBER SUBMISSION NUMBER SUBMITTAL

PREVIOUS SUBMISSION NUMBER PROJECT NUMBER

TO BE COMPLETED BY CONTRACTOR FOR GOVERNMENT USE ONLY

ITEM

NO.

SPECIFICATION SECTION/

PARA NO./DRAWING NO.

DESCRIPTION OF MATERIAL

(Include Type, Model Number, Catalog Number, Mfg., etc.)

AP-

PROVED

DISAP-

PROVED

SEE

REVERSE

INITIAL

BY COMPLETING THIS FORM, THE UNDERSIGNED CONTRACTOR CERTIFIES THAT

THE MATERIAL COMPLIES WITH ALL SPECIFICATIONS OF SUBJECT CONTRACT.

DATE (YYYYMMDD) TYPE OR PRINT NAME AND GRADE SIGNATURE

FOR GOVERNMENT USE ONLY

TO: (Base Civil Engineering Officer)

For Evaluation and Action RNLT ________________ OR SOONER

DATE (YYYYMMDD) TYPE OR PRINT NAME AND GRADE SIGNATURE

TO: (AF Contracting Office)

RECOMMEND APPROVAL DISAPPROVAL AS INDICATED ABOVE AND SUBJECT TO ANY APPLICABLE COMMENTS ON THE REVERSE

DATE (YYYYMMDD) TYPE OR PRINT NAME AND GRADE SIGNATURE

TO: (Contractor)

APPROVED

DISAPROVED AS INDICATED ABOVE AND SUBJECT TO ANY APPLICABLE COMMENTS ON THE REVERSE SIDE. REQUEST

RESUBMITTAL ON DISAPPROVED ITEMS WITHIN ____ DAYS OF DATE SHOWN BELOW.

DATE (YYYYMMDD) TYPE OR PRINT NAME AND GRADE SIGNATURE

AF IMT 3000, 20030901, V1 PREVIOUS EDITION IS OBSOLETE.

New Resubmittal

COMMENTS

(Number to correspond with applicable Item Number on reverse)

INSTRUCTIONS TO CONTRACTORS

1. The term "material" is defined as articles, supplies, raw materials, equipment, parts, components, and end items that are to be incorporated into the work required by the contract.

2. This form is to be used by contractors for submitting Shop Drawings, Equipment Data, Manufacturer's Literature and Certificates and samples of Materials to the Government for approval in accordance with the provisions of this contract. Unless otherwise specified, it is to be prepared in 4 copies, signed, and provided to the contracting officer with appropriate attachments.

3. Item(s) to be approved will be clearly tabbed or identified. Data pertaining to item(s) to be approved will be clearly identified or tabbed, particularly where documents are voluminous, in order to properly evaluate the materials or articles to be incorporated in the work. Each attachment will be numbered to correspond with the item number shown on the face of this form.

4. Requests submitted shall be numbered consecutively, by contract, in the space entitled "Submission No.". This number, in addition to the Contract No., will be used to identify each Material Approval Submittal. Resubmissions will be indicated in the appropriate block and the insertion of previous submission number and data in addition to a new submission number. A single submission should be used for all work of a section of the specifications, but in NO instance should the submission include work for more than one (1) contract. Submittals requiring priority handling will be submitted by separate submittal using the form and so marked across the face of the form.

5. This Material Approval Submittal is not valid unless it is signed by the contracting officer. This approval is required as called for by the contracting officer under the terms of this contract.

AF IMT 3000, 20030901, V1 (REVERSE)

Fort Worth ● 2951 Northern Cross Blvd., Suite 201, Fort Worth, TX 76137 ● 817-838-7400 ● Fax 817-838-7401

Date: September 28, 2017 Job Name: Dyess Building 8040 Mechanical Engineer: WTA Consulting Engineers Date of Submittal Review: 8/15/17

RESPONSE TO COMMENTS:

ITEM EQUIPMENT COMMENTS

2a Fire Dampers

Fire Dampers: Approved as noted: Seq. 69, confirm the fire dampers will be completely out of the air stream when fully open.

Response:

Per the submittal, “The VFD-10D-B fire damper employs out of the airstream curtain style blades for point-of-origin control of fire in static and dynamic HVAC systems.”

2d Manual Balancing Dampers

Manual Balancing Dampers: Approved as noted: Provide manual locking quadrant.

Response:

Per page 4 & 5 of the submittal, “Locking Quadrant” is listed as a selected accessory for all Manual Balancing Dampers.

2e

Split Systems

Split Systems, (AHU#1-16 & AHU#2-16) - Disapproved. Revise & Resubmit i: Clarify the capacity of the electric resistance heaters for AHU#1-16 & AHU#2-16 shown as 16kW, 15kW, 12kW, and 10.8kW on different pages of the submittal.

Response: AHU#1-16 has a nominal ERH of 16kW. When paired with its respective components, the applied ERH rating is 12kW which is what is scheduled. AHU#2-16 will have a nominal ERH of 15kW and applied ERH rating of 10.8kW as scheduled.

ii: Clarify the voltage of the electric resistance heaters shall be 208V/3P in lieu of 208V/1P as shown on different pages of the submittal.

Response: Per the revised submittal, all ERH’s are now 208V/3P.

iii: Clarify whether the ERH’s will be provided with contactor capable of receiving a single contact closure input from the room temperature thermostat submitted herein.

Response: The heat kit will come with fan relays that have an open contact

Dallas ● 6029 W. Campus Circle Dr., Suite 100, Irving, TX 75063 ● 972-570-4700 ● Fax 972-570-4207

2e

iv. Clarify that the AHU/ERH combination shall be provided to a single point disconnect switch provided with the equipment, or:

1.) Two Fused Disconnect Switches located side by side provided near each AHU/ERH each with 3 Fuses to supply 208V/3P to the AHU Fan and to the ERH.

2.) A single enclosure with two (2) each 3P/208V Circuit Breakers provided near each AHU/ERH that will supply 208V/3P to the AHU Fan and to the ERH.

Response: Per the revised submittal, a quantity of (2) Fused Disconnect Switches are going to be provided.

v. Clarify that the combined rating of the AHU/electric resistant heater shall not exceed the 50A circuit breaker to be provided in new Distribution Panel A

Response: Per the revised submittals, both systems will not exceed the 50A circuit breaker.

vi. Clarify that the Honeywell VisionPRO Thermostat submitted is intended for use to control AHU#1-16 & AHU#2-16 and the associated ERH.

1.) Locate the Thermostat for AHU#1-16 (not shown on Seq 64) inside Paint Workshop 22 on the east interior wall between Paint Storage 26 and Paint Mix Room 25.

2.) Locate the Thermostat for AHU#2-16 (not shown on Seq 64) inside Blast Workshop 21 on the north interior wall of Tool Crib 18.

Response: The Honeywell VisionPro Thermostat is intended for use to control both systems (AHU#1-16 & 2-16)

vii. Ref Seq 72, Note 10. - AHU supplier shall provide the filter section (front) access panel to cover the AHU Filter Section front opening that matches the Unit casing.

Response: The AHU supplier will supply this access panel

viii. Ref Seq 72, Note 8. - AHU supplier shall provide the two 22x22 floor openings in the bottom of each AHU#1-16 & AHU#2-16.

Response: The AHU supplier will provide two 22x22 floor openings in the bottom of each system.

Dallas ● 6029 W. Campus Circle Dr., Suite 100, Irving, TX 75063 ● 972-570-4700 ● Fax 972-570-4207

2g VRF Sys

VRF Sys - Approved as noted.

i. (MVID#1-16 thru MVID #13-16) Verify that a condensate pump is required on wall mounted MVID's (as submitted) if units are capable of gravity draining to floor drain. Provide pump for Cassette units as submitted.

Response: Condensate pump to be used where gravity draining is not possible.

ii. (HR1-1 thru HR1-4) Confirm proposed use of Heat Recovery Unit capacities that differ from those scheduled (LG PRHRO-22 & 32 versus LGPRHRO-42)

Response: All LG “Heat Recovery Boxes” are capable of a max 192,000 BTU/HR. The number designation in the model PRHR0XXA (22,32,42) designates how many ports are available.

2h Wall Mounted EF

Wall Mounted EF - Disapproved, Revise and Resubmit. - Seq 70, Fan Schedule Note 1 appears to require that all of the Exhaust Fans have variable speed controllers that modulate the fan speed with a 0-10VDC signal from the DDCS. I would expect to make this happen, a DP transmitter shall be provided and located in each space served by the six (6) each EF's whose signal would be sent to the DDCS (not currently shown on Seq 77 Control Diagram for EF-1,2,5, & 6).

Response: See attached revised submittal that has removed the fan speed controller and has been replaced with an Air Balance Kit that contains an integral 24V Control Transformer that also takes a 0-10V control signal from the DDCS.

Sincerely, Andrew Sottiaux Inside Sales Engineer

Date: September 28, 2017

SUBMITTAL

PROJECT: Dyess AFB Repair Maintenance Shop, Building 8040

LOCATION: Dyess AFB, TX

CONTRACTOR: Batjer and Associates

ENGINEER: WTA Consulting Engineers

REPRESENTATIVE: Ross Fields Texas AirSystems 2951 Northern Cross Blvd., Suite #201 Ft. Worth, TX 76137 Phone # 817-838-7400 Fax # 817-838-7401

York

DATE: September 28, 2017

SPECIFICATION SECTION: 23 82 02

SPECIFICATION TITLE: Unitary Heating and Cooling Equipment MANUFACTURE: York Model: Per Plans

QUANTITY: 2

Tagged: AHU #1-16 & 2-16 / ACCU #1-16 & 2-16 Prepared By: Ross Fields

Features:

Not Included:

• Installation, Transformers, Controls, Smoke Detectors, Wiring, Line Sets, Pads, Sight Glass, Filter Drier, Flue Ductwork, Filters and Auxiliary Drain Pan and Disconnects are provided by Others.

2951 Northern Cross Blvd., Suite 201

Fort Worth, Texas 76137 P: (817) 838-7400 F: (817) 838-7400 asottiaux Line asottiaux Line

Cooling Performance Total gross capacity 89.4 MBH Sensible gross capacity 67.8 MBH Efficiency (at ARI) 11.50 EER Integrated eff. (at ARI) 12.50 IEER Ambient DB temp. 105.0 °F Power input (w/o blower) 8.10 kW Sound power 89 dB(A)

Refrigerant Refrigerant type R-410A

Outside/Mixed Air Outside Air Cfm 250 CFM

Electrical Data Power supply 208-3-60 Unit min circuit ampacity 35.5 Amps Unit max over-current protection 45 Amps

Dimensions & Weight Hgt 45 in. Len 59 in. Wth 32 in.

Weight with factory installed options 390 lbs.

Clearances Right 30 in. Front 36 in. Back 24 in.

Top 120 in. Bottom 0 in. Left 30 in.

Note: Please refer to the tech guide for listed maximum static pressures

7.5 Ton

• YORK Predator Split System Units are Manufactured at an ISO 9001 Registered Facility.

Unit Features

• Single Stage Cooling

• Unit Cabinet Constructed of Powder Painted Steel, Certified At 1000 Hours Salt Spray Test (ASTM B-117 Standards)

• Full Perimeter Base Rails with Built in Rigging Capabilities

• Scroll Compressors with Crankcase Heater

• Single Refrigeration Circuit (2 Pipe)

• Liquid Line Driers (Supplied for Field Installation)

• Aluminum Tube/ Aluminum Fin Microchannel Coils

• Back Seating Suction and Liquid Line Service Valves

• Inherently Protected Fan Motors

• Low Ambient to 40ºF

• Side or Bottom Single Point Power Connections

• Short Circuit Current: 5kA RMS Symmetrical Standard Unit Controller: Simplicity Control Board

• Anti-Short Cycle Protection, Lead-Lag, Low Voltage Protection, On-Board Diagnostic and Fault Code Display

• Safety Monitoring - Monitors the High and Low-Pressure Switches. The Unit Control Board will Alarm on Compressor Lockouts and Repeated Limit Switch Trips.

BAS Controller

• Simplicity SE Control Warranty

• One (1) Year Limited Warranty on All Other Parts

• Five (5) Year Limited Warranty on Compressors

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

Predator OD Split System Split-System Outdoor

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Project Name: Dyess Bldg 8040 Unit Model #: YC090C00A2AAA4 Quantity: 1 Tag #: ACCU #1-16 System: YC090C00A2AAA4, NC090C00B6AAA2

Factory Installed Options

YC090C00A2AAA4

Product Category: Y York Predator Split System R-410A Air Conditioner Product Identifier: C 2-Pipe R-410A Nominal Cooling Capacity: 090 7.5 Ton Heat Type and Nominal Heat Capacity: C00 Airflow: A Voltage: 2 208/230-3-60 Installation Options: A

Additional Options: AA Microchannel Condenser Coil Simplicity® SE Control

Product Generation: 4

Field Installed Accessories 1HG0417 - Hail Guard (67.0 lbs) 2LA04703000 - Low Ambient To 0° F (1.6 lbs)

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Consolidated Drawing

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Piping & Connection

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Corner Weights & Center of Gravity

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Total gross capacity 89.4 MBH Sensible gross capacity 67.8 MBH Entering DB temp. 80.0 °F Entering WB temp. 67.0 °F Leaving DB temp. 59.1 °F Leaving WB temp. 57.5 °F

Heating Performance Entering DB temp. 60 °F Heating output capacity (Max) 40.9 MBH Nominal electric heat 16 kW Applied electric heat 12.0 kW Installed Field Supply air 3000 CFM Leaving DB temp. 72.6 °F Air temp. rise 12.6 °F

Supply Air Blower Performance Supply air 3000 CFM Ext. static pressure 0.3 IWG Addl. Unit Losses (Options/Accessories) 0.05 IWG Blower speed 751 RPM Duct location Upflow Motor rating 1.50 HP Actual required BHP 1.07 HP Power input 0.97 kW Elevation 489 ft.

Drive type BELT

Outside/Mixed Air Outside Air Cfm 250 CFM

Indoor Electrical Data Power supply 208-3-60 Unit min circuit ampacity 47.90 Amps Unit max over-current protection 50 Amps

Indoor Dimensions & Weight Hgt 65 in. Len 30 in. Wth 56 in.

Weight with factory installed options 524 lbs.

Indoor Clearances Side w/Piping 24 in.

Side Opposite Piping 24 in.

Side w/ Return Air 24 in.

Side w/ Supply Air 24 in.

7.5 Ton

• York Predator split system units are manufactured at an ISO 9001 registered facility

Unit Features

• Unit Cabinet Constructed of Powder Painted Steel, Certified At 1000 Hours Salt Spray Test (ASTM B-117 Standards).

• Easily converted in the field from vertical to horizontal configuration.

• Slide-out Composite Drain Pan

• Single Circuit Refrigeration

• Adjustable balanced port TXV's

• 1.5 HP Motor and Adjustable Sheave Belt Drive

• Unit ships with 2" Throwaway filters with a standard filter rack that will accept up to 4" filters.

• Short Circuit Current: 5kA RMS Symmetrical Warranty

• One (1) Year Limited Warranty on all Other Parts

• Five (5) Year limited Warranty on Electric Heating Elements

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

Predator ID Split System Split-System Air Handler R-410A AC

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Project Name: Dyess Bldg 8040 Unit Model #: NC090C00B6AAA2 Quantity: 1 Tag #: AHU #1-16 System: YC090C00A2AAA4, NC090C00B6AAA2

NC090C00B6AAA2

Product Category: N York Predator Split System R-410A Air Handler Product Identifier: C 2-Pipe Nominal Cooling Capacity: 090 7.5 Ton Heat Type and Nominal Heat Capacity: C00 Airflow: B 1.5 HP Motor Voltage: 6 208/230/460-3-60 Additional Options: AA Composite Drain Pan Product Generation: 2

2HJ04601625 - 16 kW 208/230-3 Electric Heat (47.0 lbs)

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

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Piping & Connection

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Typical Applications

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Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

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Dimensions & Clearances

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Unit Dimensions

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Wiring Diagram

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Total gross capacity 53.5 MBH Sensible gross capacity 41.3 MBH Seasonal Efficiency (at ARI) 13.75 SEER Efficiency (at ARI) 11.50 EER Ambient DB temp. 105.0 °F Power input 5.57 kW

Refrigerant Refrigerant type R-410A

Outside/Mixed Air Outside Air Cfm 250 CFM

Electrical Data Power supply 208/230-3-60 Unit min circuit ampacity 21.2 Amps Unit max over-current protection 35 Amps

Dimensions & Weight Hgt 40 in. Len 40 in. Wth 36 in.

Weight with factory installed options 205 lbs.

Matchup Information ARI Reference Number 9687835 ARI Rated Capacity 54 MBH ARI Rated Efficiency 13.75 SEER

5 Ton

Product Features

• The TCD models are the latest iteration in our successful LX Series split system air conditioner lineup. Optimized for the 3 phase 13 SEER National Minimum Efficiency, these outdoor units are specifically designed to be matched with York indoor coils, furnaces, and air handlers to provide a complete system solution.

Unit Features

• 13 SEER / 1-Stage

• Environmentally Friendly - CFC-free R-410A refrigerant delivers environmentally friendly performance with zero ozone depletion.

• Unit Cabinet Constructed of Pre-Painted Steel

• Fully Exposed Refrigerant Connections and a Single Panel Covering the Electrical Controls Make for Easy Servicing of the Unit

• Secured Re-Usable Service Valves are Provided on Both the Liquid and Vapor Sweat Connections for Ease of Evacuating and Charging

• Each Compressor is Protected Against Abnormal Pressures by an Internal Pressure Relief Valve and Factory Installed High Pressure Switch

• Liquid Line Filter Drier

• Internally Protected Condenser Fan Motor Warranty

• Standard One (1)-Year Limited Parts

• Standard Five (5)-Years Limited Compressor

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

LX Series Split-System R-410A Air Conditioner

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Project Name: Dyess Bldg 8040 Unit Model #: TCD60B31S Quantity: 1 Tag #: ACCU #2-16 System: TCD60B31S, MX20DN21, MC60D3XC1

TCD60B31S

Product Category: T York Brand Type: C Air Conditioner SEER: D 13 SEER / 1-Stage Nominal Cooling Capacity: 60 5 Ton Refrigerant: B R-410A Refrigerant Voltage: 3 208/230-3-60 Product Generation: 1 Factory-Installed Options: S

S1-1TVMBD2 - KIT,TXV,R-

410A,5/8 INCH AEROQUIP CO

(1.2 lbs)

S1-02547272000 - Compressor Crankcase Heater - Bellyband - Scroll 240V 40W (0.3 lbs)

S1-2LA06700424 - Standard Low Ambient Control Kit (0.8 lbs)

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

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TCD Typical Installation

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TCD Physical & Electrical

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TCD Typical Field Wiring

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Sensible gross capacity 41.3 MBH Entering DB temp. 80.0 °F Entering WB temp. 67.0 °F Leaving DB temp. 59.8 °F Leaving WB temp. 58.1 °F

Heating Performance Entering DB temp. 60 °F Electric heat model S1-4HK06501525 Heating output capacity (Max) 36.9 MBH Nominal electric heat 10.8 kW Installed Field Power input 10.80 kW Supply air 1890 CFM Leaving DB temp. 78.1 °F Air temp. rise 18.1 °F

Supply Air Blower Performance Supply air 1890 CFM Ext. static pressure 0.54 IWG Blower speed description HIGH / #1 Elevation 489 ft.

Drive type DIRECT

Outside/Mixed Air Outside Air Cfm 250 CFM

Indoor Dimensions & Weight Hgt 25 in. Len 21.5 in. Wth 24.5 in.

Weight with factory installed options 77 lbs.

Field Installed Heat Single Source Power Electric heat power supply 208-3-60 Circuit 1 MCA 45.4 Amps MOCP 50 Amps

Matchup Information ARI Reference Number 9687835 ARI Rated Capacity 54 MBH ARI Rated Efficiency 13.75 SEER

Unit Features

• Unit Cabinet Constructed of Pre-Painted Steel

• Direct Drive Blower with Standard ECM Motor (X13) Warranty

• Five (5) Year Limited Parts Warranty

• Ten (10) Year Limited Parts Warranty (with Registration to Original Homeowner)

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

Indoor Air Handler

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Project Name: Dyess Bldg 8040 Unit Model #: MX20DN21 Quantity: 1 Tag #: AHU #2-16 System: TCD60B31S, MX20DN21, MC60D3XC1

MX20DN21

Product Type: MX Modular Air Handler with Standard ECM Motor (X13) Nominal Airflow: 20 2000 CFM Nominal Cabinet Width: D 24.5" Wide Cabinet Options: N Voltage: 2 208/230-1-60

410A,5/8 INCH AEROQUIP CO

(1.2 lbs)

S1-4HK06501525 - 15 kW 208/230-3-60 Electric Heat without Circuit Breaker (12.0 lbs)

S1-1FR0824 - Filter Rack With Filter And Bracket (12.0 lbs)

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

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MX Dimensions

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MA Accessories

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Sensible gross capacity 41.3 MBH Ambient DB temp. 105.0 °F

Refrigerant Refrigerant type R-410A

Outside/Mixed Air Outside Air Cfm 250 CFM

Coil Dimensions & Weight Hgt 32 in. Len 21.5 in. Wth 24.5 in.

Weight with factory installed options 86 lbs.

Matchup Information ARI Reference Number 9687835 ARI Rated Capacity 54 MBH ARI Rated Efficiency 13.75 SEER Metering Device S1-1TVMBD2 (or equiv)

1.5-5 Ton Unit Features

• Durable Finish Inside and Out - Coil Casings are Made of Pre-Painted Steel.

The Pre-Treated Flat Galvanized Steel Provides a Better Paint to Steel Bond, which Resists Corrosion and Rust Creep. All Internal Metal Parts are Made of G90 Galvanized.

• Coil may be Installed Upflow, Downflow, or Horizontal Right or Left Applications

• Copper Tube/Aluminum Fin Coil

• Sweat Connect Fittings Warranty

• Five (5) Year Limited Parts Warranty

• Extended Ten (10) Year Limited Parts Warranty when product is registered online within 90 days of purchase for replacement or closing for new homeconstruction. This Warranty does not apply for R-22 or 3-Phase systems.

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

York Add-on Coils

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Project Name: Dyess Bldg 8040 Unit Model #: MC60D3XC1 Quantity: 1 System: TCD60B31S, MX20DN21, MC60D3XC1

MC60D3XC1

Case Type: MC Multiposition Cased Coil Product Capacity: 60 5.0 Ton Nominal Cabinet Width: D 24 1/2" Wide Cabinet Refrigerant / Meter: 3 Flex Coil TXV Size Indicator: X Orifice or TXV to be field installed

Options: C Horizontal Drain Pan (Factory Installed)

410A,5/8 INCH AEROQUIP CO

(1.2 lbs)

Unitary Sales Tool v1.5.9.0 Information is subject to change without notice. Check local codes. Printed 09/28/2017

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MC Coil Dimensions

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247077-UAD-H-0209

APPLICATION DATA SHEET

INTRODUCTION

Installation of residential and commercial split-systems should be performed by qualified service technicians with proper training in the installation, service and repair of these units.

This document should serve as a guideline for proper split-system piping installation. Read these instructions along with the unit installation instructions carefully and adhere to all cautions, warnings and general practice guidelines. Consult local building codes for special requirements.

The tables and application data in this publication will help you to better apply split-system cooling and heat pump systems to achieve maximum efficiency and performance, improved reliability, and greater customer satisfaction. This guideline includes information for:

• General Guidelines

• Indoor Unit Above the Outdoor Unit

• Outdoor Unit Above the Indoor Unit

• Total line length

• Line Sizing

• Additional Refrigerant

• Refrigerant Oil Management

• Accumulator Use and Misuse

• Recommended Orifice Sizing Chart

• Long Line Set Applications

GENERAL GUIDELINES

The following guidelines apply to the application on either factory line sets or field fabricated tubing for cooling only and heat pump systems:

• Many service problems can be avoided by taking adequate precautions to provide an internally clean and dry system and by using procedures and materials that conform with established standards.

• The lines should be installed so that they will not obstruct service access to the indoor coil, air handling system or filter.

Install the lines with as few bends as possible. Care must be taken not to damage the couplings or kink the tubing. Care must also be used to isolate the refrigerant lines to minimize noise transmission from the equipment to the structure.

• Never solder vapor and liquid lines together. They can be taped together for convenience and support purposes, but they must be completely insulated from each other.

• Support all refrigerant lines at minimum intervals with suitable hangers and brackets. Tape and suspend the refrigerant lines as shown in Figure 1. DO NOT ALLOW

METAL-TO-METAL CONTACT.

FIGURE 1: Refrigerant Line Support

• Slope horizontal suction lines on cooling only systems approximately 1 inch every 20 feet toward the outdoor unit to facilitate proper oil return. Since the flow of refrigerant is bi-directional on heat pumps, all horizontal vapor lines should be level. Pre-charged lines with excess tubing should be coiled horizontally in an inconspicuous location to avoid oil trapping. Never coil excess tubing vertically.

• Use long radius elbows wherever possible.

• Use PVC piping as a conduit for all underground installa-tions. See Figure 2. Buried lines must be kept as short as possible to minimize the build up of liquid refrigerant in the vapor line during long periods of shutdown.

This Split-System (Air Conditioning Condensing/Heat Pump) unit is one component of an entire system. As such it requires specific application considerations with regard to the rest of the system (air handling unit, duct design, refrigerant piping and control scheme).

Failure to properly apply this equipment with the rest of the system may result in premature failure and/or reduced performance/increased costs. Warranty coverage specifically excludes failures due to improper application and UP specifically disclaims any liability resulting from improper application.

Please refer to the equipment Technical Guide, Installation Manual and the following publication for further information.

LIQUID

LINE

TAPE

INCORRECT

CORRECT INSULATED VAPOR LINE

SHEET METAL HANGER

General Piping Recommendations and Refrigerant Line Length for Split-System Air Conditioners and Heat Pumps

2 Johnson Controls Unitary Products

FIGURE 2: Underground Application

• Pack fiberglass insulation and a sealing material such as permagum around refrigerant lines where they penetrate a wall to reduce vibration and to retain some flexibility. If multiple line sets are routed through a common conduit, then all lines must be insulated.

• Insulate all vapor lines with a minimum of 1/2 inch of foam rubber. Liquid lines that will be exposed to direct sunlight or high ambient temperatures such as an attic must also be insulated.

The following additional guidelines apply to field fabricated piping:

• Use hard drawn refrigeration type copper tubing where no appreciable amount of bending around pipes or obstructions is necessary. If soft copper must be used, care should be taken to avoid sharp bends which may cause a restriction.

• Braze all copper to copper joints with Silfos-5 or equivalent brazing material. DO NOT USE SOFT

SOLDER.

• During brazing operations, flow an inert gas such as nitrogen through the system to prevent internal scaling and contamination.

TRAPS

Traps are not required if the piping is properly sized. Traps will only add pressure drop to the system, further reducing capacity.

INDOOR UNIT ABOVE OUTDOOR UNIT

With this configuration, a common problem with the cooling cycle (air conditioning or heat pump) is that the amount of liquid sub-cooling varies as operating conditions change (such as outdoor ambient). Under some conditions, it is possible that flashing will actually occur in the liquid riser. As long as only liquid is present in the liquid riser, the liquid static pressure loss can be calculated at 1/2 psi per foot of rise. However, as soon as flashing starts, the rate of pressure loss increases and continues to increase as the amount of gas increases. For this reason, the restrictions on elevation differences for this configuration must be based on the entire range of operating conditions.

When the indoor unit is above the outdoor unit, the pressure loss in the liquid line during the cooling cycle will limit the amount of elevation difference allowed. Since both friction and static head contribute to pressure loss, it can be stated that the elevation difference allowed decreases as the total equivalent line length (horizontal plus vertical) increases.

OUTDOOR UNIT ABOVE INDOOR UNIT

COOLING CYCLE

When the outdoor unit is above the indoor unit, the static pressure gain in the liquid line vertical drop (1/2 psi per foot) may overcome the frictional pressure loss resulting in a total pressure gain. A pressure gain in the liquid line is not detrimental to the performance of the system.

On cooling only systems where the outdoor unit is located high above the indoor coil, it may even be possible to reduce the size of the liquid line. The static gain in the vertical drop will offset the increased friction loss caused by smaller tubing. In addition, the reduction in the total system charge due to the smaller liquid line will enhance the reliability of the system.

With this configuration, gas velocity in the vapor riser must be kept above 1000 feet per minute for proper oil return and below 3000 feet per minute to avoid noise and vibration problems.

HEATING CYCLE (Heat Pumps Only)

In the heating mode, liquid will travel from the indoor unit up the liquid riser to the outdoor unit. This will result in a liquid line pressure drop and a starved outdoor coil. Since heat pumps have a defrost cycle, coil freeze-up is not a problem. However, the resulting lower suction pressure will decrease the capacity and efficiency of the system.

TOTAL LINE LENGTH

The total length of interconnecting tubing is the sum of all horizontal and vertical runs from the indoor unit to the outdoor unit. Total measured line lengths are limited to:

• The limiting factor on heat pumps is the storage capacity of the accumulator. The limiting factor on cooling units is oil sump capacity in the compressor.

• Total equivalent line lengths must only be used when calculating pressure drop. Therefore use Table 1 to calculate equivalent lengths for elbows.

TO INDOOR COIL

LIQUID LINE

PVC

CONDUIT

INSULATED

VAPOR LINE

TO OUTDOOR UNIT

CAP

(WATER TIGHT)

Johnson Controls Unitary Products 3

LINE SIZING

Every split-system unit is shipped with a factory-mounted sweat fitting.

For split systems, interconnecting refrigerant lines should be sized to match the factory supplied fittings unless the application dictates different line sizes due to pressure drop, refrigerant velocity constraints and/or line set lengths.

For cooling systems where the indoor and outdoor sections are installed at the same elevation, refrigerant line sizes can usually be matched with the factory supplied fittings. There are exceptions for total line lengths exceeding 75 feet where pressure drop limitations are exceeded. Refer to Long Line Set section.

In some applications, especially where elevation differences exist between the indoor and outdoor sections, suction and liquid line sizes can be increased (or decreased) to minimize pressure loss (or gain) and improve oil return to the compressor. When sizing refrigerant lines for split-system cooling units, the following factors must be considered:

1. Suction line pressure loss due to friction.

2. Suction line velocity for oil return.

3. Liquid line pressure loss due to friction.

4. Liquid line pressure loss (or gain) due to static head.

The effect that each of these factors have on a cooling system depends on the orientation of the indoor and outdoor sections;

e.g., indoor unit above the outdoor unit. Before we discuss the various orientations, it is important to understand a few things about suction and liquid lines.

First, lets consider suction lines. Suction pressure loss reduces system capacity by 1% for R-22 and 0.6% for R-410A per psi.

This can be a serious problem if suction lines are not sized properly and pressure loss is 8 or 9 psi. Therefore, in order to minimize capacity loss and maximize efficiency, suction pressure loss must be minimized. This is achieved by increasing the size of the suction line. As a good achievable guideline, suction pressure loss should not be allowed to exceed 3 psi (5 psi for R-410A).

Another important consideration when sizing suction lines is refrigerant gas velocity in a suction riser. Velocity of at least 1000 feet per minute is required to carry oil up a suction riser.

Of course, this is only a factor when the outdoor unit is above the indoor unit and the oil must overcome the pull of gravity to return to the compressor. Greater refrigerant velocities are obtained by decreasing the size of the suction line. In applications where smaller tubing is required for a suction riser and larger tubing is needed to minimize pressure drop, the riser must be sized to achieve a velocity of at least 1000 feet per minute while the horizontal runs can be sized larger to minimize pressure drop.

NOTE: Must maintain 800 fpm minimum velocity on all horizontal pipe runs.

Liquid lines must also be sized to minimize pressure change.

The total pressure change in a liquid line is the sum of the loss due to friction and the loss (or gain) due to static head in the vertical line. Liquid pressure loss reduces the amount of liquid sub-cooling at a rate of 1 degree for every 3 psi for R-22 and 5 psi for R-410A. Sufficient sub-cooling must be maintained at the expansion valve to provide proper operation. If the liquid pressure drop is high enough to deplete all of the liquid sub-cooling in the system, liquid will begin to flash reducing the refrigerant flow through the indoor coil expansion valve.

However, as soon as flashing begins, the rate of pressure loss increases and continues to increase as the amount of gas increases. Careful consideration must be given to liquid line sizing to minimize pressure drop and system charge. Liquid lines should be sized as small as possible without exceeding the recommended maximum pressure drop. The maximum recommended liquid line velocity is 400 fpm. Velocities exceeding 400 fpm can result in higher than acceptable noise levels.

ADDITIONAL REFRIGERANT

In many applications, additional refrigerant will have to be added to the system. The actual amount of charge that must be added is determined by adding the following:

1. The indoor coil charge adjustment from the Installation Manual.

2. The additional charge required for the interconnecting piping and the size of the vapor and liquid lines.

Example: For a system using a 3/8 liquid line and a 3/4 suction line with a total measured length of 50 feet, NOTE: On residential equipment 15 feet of line is included on nameplate charge.

TABLE 1: EQUIVALENT LENGTHS OF ELBOWS IN FEET

LINE SIZE

INCHES (O.D.)

90° SHORT

RADIUS

ELBOW (FT.)*

*. Two 45° radius ells equals one 90° radius ell.

90° LONG

RADIUS

ELBOW (FT.)

1/4 0.7 0.6

5/16 0.8 0.7 3/8 0.9 0.8 1/2 1.2 1.0 5/8 1.5 1.3 3/4 1.6 1.4 7/8 1.8 1.6

1-1/8 2.4 2.0 1-3/8 3.2 2.2 1-5/8 3.8 2.6 2-1/8 5.2 3.4 2-5/8 6.5 4.2

Liquid line 50 - 15 feet x 0.62 oz./foot = 21.7 oz.

Suction line 50 - 15 feet x 0.06 oz./foot = 2.1 oz.

Charge add for interconnecting tubing = 23.8 oz.

4 Johnson Controls Unitary Products

REFRIGERANT OIL MANAGEMENT

Inherent to all refrigeration systems is the presence of refrigerant oil required for proper and continuous lubrication of the compressor(s) bearings. All refrigeration systems, whether they are packaged or split-systems circulate oil throughout the system due to the miscibility of refrigerant oil. Split-systems, due to their propensity for long piping lengths, can circulate more refrigerant oil than packaged units, which can become a problem if not recognized and managed. It is not unusual for a given system to circulate as much as 15% of the original compressor oil charge. Yet another side-effect of long piping runs on split-systems is the aspect of system oil logging which can occur even in the best of installations. Even the best piping practices can inadvertently create oil traps in the system especially when elevation differences between the indoor and outdoor units occur. Refer to the section on Long Line Set Applications for determining if refrigerant oil should be added to the system.

ACCUMULATOR USE AND MISUSE

Ordinarily, suction line accumulators are not necessary on AC units if the system is piped correctly and all of the precautionary guidelines are followed. Refrigerant suction line accumulators should only be installed on systems where liquid flood back to the compressor(s) is highly likely. Accumulators are a standard item on all heat pumps to avoid liquid flood back to the compressor when switching from heat to cooling, reversal before and after defrost and during low ambient heating operation. If applied incorrectly suction line accumulators can log oil or not provide the necessary liquid protection especially when under sized.

The compressor suction line size should never be used as a guideline for sizing the suction line accumulator. Matching the accumulator piping size to the suction line size can often times result in an undersized accumulator. Normally the accumulator is sized for not less than 50% of the total system capacity.

Careful consideration must be given when attempting to apply an accumulator to a split-system. On any given unit approximately 80% of the system charge can be found between the compressor and the expansion device during operation.

When the system shuts down the refrigerant is trapped between the compressor check valve and the non-bleed expansion device used on all York split-systems. During long periods of shut down the refrigerant will migrate to the low side of the system possibly accumulating in the evaporator coil and horizontal suction lines.

If it has been determined that an accumulator must be installed in the system proper positioning with respect to the compressor suction line level is shown in Figure 3. It may become necessary in many cases to elevate the outdoor unit to accommodate proper piping and drainage back to the accumulator during the off cycle. Multiple accumulators whether piped in series or parallel are not recommended.

If an accumulator has been installed into a system and the compressor experiences a burn out the accumulator must be replaced. The debris from the burn out will clog the orifice in the accumulator resulting in oil return starvation to the replacement compressor.

FIGURE 3: Accumulator Field Piping

TABLE 2: LINE CHARGE

R-22 LINE CHARGE*

*. Charges are based upon 40°F suction temperature and 105°F liquid temperature.

SUCTION OZ./FT. LIQUID OZ./FT.

1/2 0.02 1/4 0.23 5/8 0.04 5/16 0.40 3/4 0.06 3/8 0.62 7/8 0.08 1/2 1.12

1-1/8 0.14 5/8 1.81 1-3/8 0.21 7/8 3.78 1-5/8 0.30 7/8 3.78 2-1/8 0.53 1-1/8 6.46 2-5/8 0.81 1-1/8 6.46

R-410A LINE CHARGE*

SUCTION OZ./FT. LIQUID OZ./FT.

1/2 0.04 1/4 0.19 5/8 0.06 5/16 0.33 3/4 0.09 3/8 0.51 7/8 0.12 1/2 1.01

1-1/8 0.20 5/8 1.64 1-3/8 0.31 3/4 2.46 1-5/8 0.43 7/8 3.27 2-1/8 0.76 1-1/8 5.58 2-5/8 1.17

Accumulator

Liquid Level

Drainage in Off Cycle

Scroll Compressor

Johnson Controls Unitary Products 5

RECOMMENDED ORIFICE SIZE

ORIFICE SIZING

Use the York® Comfort Cooling Piping software to determine liquid line pressure drop to select proper orifice sizing.

LONG LINE SET APPLICATIONS

This section is intended for long line applications that exceed 75'. When sizing line sets under 75', always use factory supplied connections. If your application is outside of the selection charts, your application must be approved through the Application Engineering group.

LIQUID LINE SIZING CRITERIA

The following considerations have already been accounted for when relating to the selection charts.

• R-22 Maximum Pressure Drop is 35 psig

• R-410A Maximum Pressure Drop is 60 psig

• Increased charge levels

• Maximum recommended velocity of 400 fpm

• Minimum velocity of 100 fpm

Liquid Line Selection Chart: The charts below show the line sizes that can be selected for each tonnage of unit and the maximum equivalent length and maximum rise of the line. The maximum actual line length is 200 feet. Equivalent line lengths would include elbows and other components that would increase the equivalent length.

Shaded area indicates system needs oil added (Refer to Oil Addition section on page 7).

TABLE 3: RECOMMENDED ORIFICE SIZE

LIQUID LINE PRESSURE

GAINS (PSI)

STANDARD

ORIFICE

SIZE

LIQUID LINE

PRESSURE

LOSSES (PSI)

51 41 31 21 11 11 21

Thru Thru Thru Thru Thru Thru Thru 60 50 40 30 20 20 30

CORRECTED

ORIFICE SIZE

CORRECT ORIFICE

SIZE

- - - - 39 41 43 45

- - - 39 41 43 45 47

41 43 45 47 49 51 53 55 43 45 47 49 51 53 55 57 45 47 49 51 53 55 57 59 47 49 51 53 55 57 59 61 49 51 53 55 57 59 61 63 51 53 55 57 59 61 63 65 53 55 57 59 61 63 65 67 55 57 59 61 63 65 67 69 57 59 61 63 65 67 69 71 59 61 63 65 67 69 71 73 61 63 65 67 69 71 73 75 63 65 67 69 71 73 75 78 65 67 69 71 73 75 78 81 69 71 73 75 75 78 81 84 71 73 75 78 78 81 84 87 75 75 78 81 81 84 87 90 78 78 81 84 84 87 90 93 81 81 84 87 87 90 93 96 84 84 87 90 90 93 96 99 87 87 90 93 93 96 99 102 90 90 93 96 96 99 102 105 93 93 96 99 99 102 105 105

TABLE 4: R22 LIQUID LINE, MAXIMUM RISE CHART

Tons Line Size

Maximum Total Equivalent Length Velocity

75 100 125 150 175 200 225 250 FPM

1.5 5/16 60 55 50 50 45 40 35 30 186 3/8 65 65 65 60 60 60 55 55 115

2.0 5/16 50 45 35 30 25 20 15 5 248 3/8 60 60 60 55 55 50 45 45 154

2.5 3/8 60 55 55 50 45 40 35 35 192 1/2 65 65 65 65 65 60 60 60 103

3.0 3/8 55 50 45 40 35 30 25 20 231 1/2 65 65 65 65 60 60 60 55 124

3.5 3/8 50 45 35 30 25 20 10 5 269 1/2 65 65 60 60 60 55 55 55 145

4.0 3/8 45 35 30 20 15 10 - - 308 1/2 65 60 60 60 55 55 50 50 165

5.0 3/8 30 20 10 - - - - - 385 1/2 60 60 55 50 50 45 45 40 207

7.5 1/2 50 45 40 35 30 25 15 10 310 5/8 65 60 60 60 55 55 55 50 193

5/8 60 55 55 50 50 45 40 40 257 3/4 65 65 65 60 60 60 55 55 175

12.5 5/8 55 50 45 40 35 30 25 25 322 3/4 65 60 60 55 55 55 50 50 219

3/4 60 60 55 55 50 50 45 45 263 7/8 65 65 65 60 60 60 60 55 186

3/4 55 50 45 45 40 35 30 25 351 7/8 65 60 60 55 55 55 50 50 248

7/8 60 55 55 50 50 45 40 40 310

1-1/8 65 65 65 65 65 60 60 60 182

6 Johnson Controls Unitary Products

*Note: Exceeds recommended maximum velocity of 400 fpm, consider noise when selecting this pipe size.

Example: 3 Ton cooling unit with 175' of equivalent length, condensing unit is below the evaporator with 80' of vertical rise to the evaporator.

Answer: You should have selected 1/2”. Why did you select this size? Because at 175' equivalent length with a 3 ton system, the maximum rise is 75’ for 3/8” and 95’ for 1/2".

Multi Stage Refrigeration Systems: When sizing the liquid line for a system with either a 2 stage scroll compressor (residential) or when a single refrigeration system utilizes compressor staging for capacity reduction (commercial).

ALWAYS calculate the liquid line size with the maximum tonnage rating of the unit.

SUCTION LINE SIZING CRITERIA

The following considerations have already been accounted for when relating to the selection charts.

• Minimum velocity of 1000 fpm for vertical lines and 800 fpm for horizontal lines guarantee proper oil return

• Minimal pressure drop to minimize capacity loss

Suction Line Selection Chart: The charts below show the line sizes that can be selected for each tonnage of unit and the percent of capacity reduction the system will have because of the long line set application. The maximum actual line length is 200 feet, equivalent line lengths would include elbows and other components that would increase the equivalent length.

Note: (-) Indicates unacceptable pressure drop in suction line

TABLE 5: R-410A LIQUID LINE, MAXIMUM RISE CHART

Tons Line Size

Maximum Total Equivalent Length Velocity

75 100 125 150 175 200 225 250 FPM

1.5 5/16 75 90 85 85 80 75 75 70 223 3/8 75 100 95 95 95 95 90 90 138

2.0 5/16 75 80 75 70 65 60 55 50 297 3/8 75 95 90 90 85 85 85 80 184

2.5 3/8 75 90 85 85 80 80 75 70 230 1/2 75 100 100 100 100 95 95 95 123

3.0 3/8 75 85 85 80 75 70 65 60 276 1/2 75 100 100 95 95 95 90 90 148

3.5 3/8 75 80 75 70 65 60 55 50 322 1/2 75 95 95 95 95 90 90 90 173

4.0 3/8 75 75 70 60 55 45 40 35 368 1/2 75 95 95 95 90 90 90 85 198

5.0 3/8 70 60 50 40 30 20 10 0 *460 1/2 75 95 90 90 85 85 80 80 247

7.5 1/2 75 80 80 75 70 65 60 55 370 5/8 75 95 95 95 90 90 90 85 231

5/8 75 90 90 85 85 80 80 75 307 3/4 75 100 95 95 95 95 90 90 210

12.5 5/8 75 85 85 80 75 70 65 65 384 3/4 75 95 95 90 90 90 90 85 262

3/4 75 95 90 90 85 85 85 80 315 7/8 75 100 95 95 95 95 95 90 222

3/4 75 85 85 80 75 70 70 65 419 7/8 75 95 95 90 90 90 85 85 296

7/8 75 95 90 90 85 85 80 75 371

1-1/8 75 100 100 100 95 95 95 95 217

TABLE 6: R22 SUCTION LINE, CAPACITY REDUCTION

CHART (%)

Tons Line Size

Total Equivalent Length Velocity

75 100 125 150 175 200 225 250 FPM

1.5 5/8 5 7 9 12 - - - - 1682 3/4 4 5 6 7 9 11 12 13 1147

2.0 3/4 3 4 6 8 9 11 - - 1529 7/8 3 4 5 6 7 8 9 10 1081

2.5 3/4 3 5 7 - - - - - 1911 7/8 2 3 4 5 7 8 9 10 1351

3.0 3/4 5 7 8 - - - - - 2294 7/8 2 3 5 6 8 9 10 11 1621

3.5 7/8 2 4 6 7 - - - - 1892

1-1/8 2 3 4 4 5 5 6 7 1109

4.0 7/8 3 5 7 - - - - - 2162

1-1/8 2 2 3 4 4 5 6 7 1268

5.0 7/8 5 - - - - - - - 2703

1-1/8 1 2 3 4 5 6 6 7 1585 1-3/8 1 2 3 3 4 4 5 6 1048

7.5 1-3/8 1 2 2 2 3 4 5 5 1561 1-5/8 1 2 2 2 3 3 4 4 1103

1-3/8 1 1 2 3 4 5 6 - 2082 1-5/8 1 1 2 2 2 3 3 3 1471

12.5 1-5/8 1 1 1 2 2 3 3 4 1839 2-1/8 1 1 1 1 2 2 3 3 1057

1-5/8 1 1 2 3 3 4 4 5 2207 2-1/8 1 1 1 2 2 2 2 3 1268

2-1/8 1 1 1 1 2 2 2 2 1691 2-5/8 1 1 1 1 1 2 2 2 1096

2-1/8 1 1 1 1 1 2 2 3 2114 2-5/8 1 1 1 1 1 2 2 2 1370

Johnson Controls Unitary Products 7

*Velocity is below 1000 fpm, should only be used on horizontal line.

Multi Stage Refrigeration Systems: When sizing the suction line for a system with either a 2 stage scroll compressor (residential) or when a single refrigeration system utilizes compressor staging for capacity reduction (commercial).

ALWAYS select the largest available pipe size from the minimum tonnage of capacity reduction.

Example: 10 ton R-22 2 pipe system that reduces capacity to 5 tons. Select 1-3/8” suction line, this is the largest available suction line size for a 5 ton suction line.

Note: 2 stage scroll compressors operate at 67% of full load capacity.

LONG LINE SET ACCESSORIES

All long line set applications must have the following accessories installed if they are not already installed from the factory.

• Crankcase Heater - A crankcase heater will warm the compressor sump and prevent the refrigerant from migrating to the compressor in the off cycle.

• Non Bleed TXV's on all ID Coils - Prevents refrigerant from bleeding into the low side of the system through the evaporator in the off cycle.

• Hard Start Kit - A hard start kit is necessary to increase the compressor starting torque anytime a TXV is used in a system. This is necessary to overcome the pressure difference across the compressor.

• Cooling Only Units - Require liquid line check valve placed in the liquid line near the condensing unit. This is used to lock the refrigerant in the liquid line between the TXV and the condensing unit to reduce off cycle migration.

• Heat Pumps with Orifice in OD Coil - Require check valve and solenoid valve placed in liquid line to prevent off cycle migration, refer to Figure 4 for proper placement.

• Heat Pumps with TXV’s on both Coils - Do not require additional check valves and solenoid valves.

• Pump Out Accessory - This is required on commercial applications where available.

OIL ADDITION

If the line set you selected is in the shaded area of Table 4, (R22 Liquid Line, Maximum Rise Chart) oil needs to be added to the compressors. The formula below determines the amount of oil to add to the compressors.

(TSC x .03 x 16) - (SOC x .1) = AOR

• TSC = Total System Charge in pounds

• SOC = System Oil Charge in ounces

• AOR = Additional Oil Required in ounces

ROTARY COMPRESSOR

If you are selecting a unit with a rotary compressor, the maximum actual line set is 100 ft.

TABLE 7: R-410A SUCTION LINE, CAPACITY REDUCTION

CHART (%)

Tons Line Size

Total Equivalent Length Velocity

75 100 125 150 175 200 225 250 FPM

1.5 5/8 3 4 5 7 8 10 12 13 1185 3/4 3 4 5 6 8 10 11 12 808*

2.0 5/8 2 4 6 7 - - - - 1582 3/4 3 4 4 5 6 7 8 10 1078

2.5 3/4 2 3 4 5 6 7 8 10 1346 7/8 2 3 4 5 6 6 7 8 952*

3.0 3/4 2 2 4 5 6 8 - - 1616 7/8 2 3 3 4 5 5 6 7 1143

3.5 3/4 2 3 4 6 - - - - 1887 7/8 2 2 3 3 4 5 6 7 1333

4.0 3/4 2 4 5 - - - - - 2155 7/8 1 2 2 3 5 6 7 8 1523

5.0 7/8 1 2 3 5 6 - - - 1905

1-1/8 1 2 2 3 3 4 4 5 1117

7.5 1-1/8 1 1 2 2 3 4 5 5 1676 1-3/8 1 1 2 2 3 3 3 4 1100

1-3/8 1 1 1 2 2 2 3 3 1467 1-5/8 1 1 1 2 2 2 3 3 1036

12.5 1-3/8 1 1 1 1 2 2 3 4 1834 1-5/8 1 1 1 1 2 2 2 3 1295

1-3/8 1 1 1 2 3 4 5 - 2200 1-5/8 1 1 1 1 1 2 2 2 1554

1-5/8 1…