Technical Guide

ManualsBrandsYork ManualsPackaged UnitYork BHQ Packaged Unit

FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE

718420-YTG-B-1112

TECHNICAL GUIDE

Description

These York

Affinity™ packaged heat pumps are designed for

outdoor installation. Only utility and duct connections are

required at the point of installation.

Field-installed electric heater accessories are available to

provide electric heat, if required.

R-410A

AFFINITY™ SERIES

BHQ MODELS

2 - 5 TON

60 Hertz

Tested in accordance with:

Summary of content (42 pages)

PAGE 1
718420-YTG-B-1112 ® TECHNICAL GUIDE R-410A AFFINITY™ SERIES BHQ MODELS 2 - 5 TON 60 Hertz Description These York® Affinity™ packaged heat pumps are designed for outdoor installation. Only utility and duct connections are required at the point of installation. Field-installed electric heater accessories are available to provide electric heat, if required.
PAGE 2
718420-YTG-B-1112 Table of Contents Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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718420-YTG-B-1112 Nomenclature Heat Pump B 1 HQ 024 A 06 Product Category Voltage Code B = Single Package Heat Pumps (Air Cooled) 06 = 208/230-1-60 25 = 208/230-3-60 46 = 460-3-60 Product Generation 1 = New or Current Design Factory Installed Gas Heat A = No Electric Heat Installed Product Identifier HQ = R-410A 14 SEER/12 EER Nominal Cooling Capacity (MBH) 024 = 24,000 BTUH 030 = 30,000 BTUH 036 = 36,000 BTUH Features and Benefits Standard Features • Operating Efficiency - All heat pump units
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718420-YTG-B-1112 • More Attractive Appearance - A single piece Water Shed top cover containing a top discharge condenser fan arrangement requires less square footage on installation and provides a wider variety of installations. The one piece design adds greater water integrity. Rounded corners with water drip edges add to the attractive appearance. The cabinet panels have a non-fibrous insulation that will not release insulation fibers into conditioned area.
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718420-YTG-B-1112 • Anti Short Cycle Timer (BHZ Units Only) Automatically prevents the compressor from restarting for 5 minutes after cycled off.Not required if Thermostat 2ET07700224 and 2ET04700224 are used. Standard in all BHX units. • Filter/Frame Kit (Single Phase Only) - Kit contains the necessary hardware to field install return air filters into the base unit. Pre-cut filter racks and appropriate cleanable standard size filters are shipped in one kit.
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718420-YTG-B-1112 totally enclosed with permanently lubricated bearings and internally protected against overload conditions. b. Evaporator coil shall be of the direct expansion, draw through design, while condenser coil shall be draw through design. Refrigerant Components Compressors: a. Shall be fully hermetic type, direct drive, internally protected with internal high-pressure relief and over temperature protection.
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18420-YTG-B-1112 Physical Data BHQ024-060 Physical Data Component BHQ024 2.0 BHQ030 2.5 Models BHQ036 BHQ042 3.0 3.5 BHQ048 BHQ060 Nominal Tonnage 4.0 5.0 ARI COOLING PERFORMANCE Gross Capacity @ ARI A point 23.3 29.4 35.9 40.1 47.4 54.5* (Mbh) ARI net capacity (Mbh) 23 28.6 35.2 39.0 46.5 54.0* EER 12.0 12.0 12.0 12.0 12.0 12.0* SEER 14.0 14.0 14.0 14 14.0 14.0* Nominal CFM 800 1050 1100 1400 1400 1500 System power (KW) 1.9 2.4 2.9 3.3 3.9 4.
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718420-YTG-B-1112 BHQ Unit Limitations Model Unit Voltage Unit Limitations Applied Voltage Min Max BHQ 208/230-1-60 187 252 115 BHQ 208/230-1-60 187 252 125 036 (3.0) BHQ 208/230-1-60 208/230-3-60 460-3-60 187 187 432 252 252 504 115 115 115 042 (3.5) BHQ 208/230-1-60 187 252 125 048 (4.0) BHQ 060 (5.0) BHQ 208/230-1-60 208/230-3-60 460-3-60 208/230-1-60 208/230-3-60 460-3-60 187 187 432 187 187 432 252 252 504 252 252 504 115 115 115 115 115 115 Size (Tons) 024 (2.
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718420-YTG-B-1112 Capacity Performance BHQ024-060 Cooling Capacities BHQ024 (2.0 Ton) Air on Evaporator Coil CFM 500 600 700 800 900 1000 500 600 700 800 900 1000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 31.5 28.1 24.8 22.9 32.1 28.7 25.3 23.4 24.0 32.8 29.3 25.8 23.8 24.5 33.4 29.9 26.3 24.3 25.0 30.3 26.7 24.6 25.3 30.7 27.0 24.9 25.7 1.3 1.3 1.4 1.3 1.3 1.4 1.4 1.4 1.3 1.3 1.4 1.4 1.4 1.4 1.4 1.
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718420-YTG-B-1112 BHQ024 (2.0 Ton) (Continued) Air on Evaporator Coil CFM 500 600 700 800 900 1000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 20.3 18.8 17.2 16.3 21.1 19.5 17.9 16.9 17.4 21.9 20.3 18.6 17.6 18.1 22.7 21.0 19.3 18.2 18.7 21.0 19.3 18.2 18.7 20.9 19.2 18.2 18.7 2.5 2.5 2.4 2.4 2.5 2.5 2.4 2.4 2.4 2.5 2.4 2.4 2.4 2.3 2.4 2.4 2.4 2.3 2.3 2.4 2.4 2.4 2.3 2.4 2.4 2.4 2.3 7.2 12.2 17.2 16.3 10.
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718420-YTG-B-1112 BHQ030 (2.5 Ton) Air on Evaporator Coil CFM 900 950 1000 1050 1125 1200 900 950 1000 1050 1125 1200 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 36.5 33.8 31.1 28.1 37.0 34.2 31.5 28.5 28.3 37.5 34.7 31.9 28.8 28.6 37.9 35.1 32.2 29.2 29.0 35.3 32.4 29.3 29.2 35.5 32.6 29.5 29.3 1.7 1.7 1.7 1.6 1.7 1.7 1.7 1.6 1.6 1.7 1.7 1.7 1.6 1.6 1.7 1.7 1.7 1.7 1.6 1.7 1.7 1.7 1.6 1.7 1.7 1.6 1.
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718420-YTG-B-1112 BHQ030 (2.5 Ton) (Continued) Air on Evaporator Coil CFM 900 950 1000 1050 1125 1200 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 29.0 26.7 24.4 23.2 29.2 26.9 24.6 23.3 23.2 29.4 27.1 24.8 23.5 23.4 29.6 27.3 25.0 23.7 23.6 27.5 25.1 23.8 23.7 27.6 25.2 23.9 23.8 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7 16.6 20.5 24.4 23.2 17.
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718420-YTG-B-1112 BHQ036 (3.0 Ton) Air on Evaporator Coil CFM 1000 1100 1200 1300 1350 1400 1000 1100 1200 1300 1350 1400 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 44.0 41.1 38.2 33.4 45.1 42.1 39.1 34.2 35.8 46.2 43.1 40.1 35.1 36.7 47.3 44.1 41.0 35.9 37.5 44.3 41.2 36.1 37.7 44.5 41.3 36.2 37.8 2.1 2.1 2.1 2.0 2.1 2.1 2.1 2.0 2.0 2.1 2.1 2.1 2.0 2.0 2.1 2.1 2.1 2.0 2.0 2.1 2.1 2.0 2.0 2.1 2.0 2.
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718420-YTG-B-1112 BHQ036 (3.0 Ton) (Continued) Air on Evaporator Coil CFM 1000 1100 1200 1300 1350 1400 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 33.8 31.1 28.3 26.8 34.5 31.6 28.8 27.3 27.4 35.1 32.2 29.3 27.8 27.9 35.7 32.8 29.8 28.3 28.3 32.7 29.8 28.2 28.3 32.6 29.7 28.1 28.2 3.4 3.4 3.3 3.3 3.4 3.4 3.3 3.3 3.3 3.4 3.4 3.3 3.3 3.3 3.4 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 20.0 24.1 28.3 26.
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718420-YTG-B-1112 BHQ042 (3.5 Ton) Air on Evaporator Coil CFM 875 1050 1225 1400 1575 1750 875 1050 1225 1400 1750 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 48.8 46.5 44.2 42.7 49.6 47.3 44.9 43.4 43.0 50.4 48.0 45.6 44.0 43.6 51.1 48.7 46.3 44.7 44.3 49.7 47.2 45.6 45.2 50.7 48.2 46.5 46.1 2.5 2.4 2.2 2.3 2.5 2.3 2.2 2.2 2.3 2.5 2.3 2.2 2.2 2.2 2.4 2.3 2.1 2.2 2.2 2.3 2.2 2.2 2.2 2.3 2.2 2.2 2.3 23.
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718420-YTG-B-1112 BHQ042 (3.5 Ton) (Continued) Air on Evaporator Coil CFM 875 1050 1225 1400 1575 1750 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 37.3 34.6 32.0 31.7 37.8 35.1 32.4 32.1 32.6 38.4 35.6 32.9 32.6 33.0 38.9 36.2 33.4 33.1 33.5 36.6 33.8 33.5 33.9 37.0 34.2 33.9 34.3 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 3.7 15.5 23.7 32.0 31.
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718420-YTG-B-1112 BHQ048 (4.0 Ton) Air on Evaporator Coil CFM 1300 1400 1500 1600 1800 2000 1300 1400 1500 1600 1800 2000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 63.0 57.9 52.9 48.3 63.7 58.6 53.5 48.8 48.5 64.4 59.3 54.1 49.4 49.0 65.2 59.9 54.7 49.9 49.6 61.1 55.7 50.9 50.5 62.2 56.8 51.8 51.5 2.8 2.7 2.7 2.7 2.8 2.8 2.7 2.7 2.7 2.9 2.8 2.8 2.7 2.7 2.9 2.8 2.8 2.8 2.8 2.9 2.8 2.8 2.8 2.9 2.8 2.
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718420-YTG-B-1112 BHQ048 (4.0 Ton) (Continued) Air on Evaporator Coil CFM 1300 1400 1500 1600 1800 2000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 46.1 42.4 38.6 35.1 47.1 43.2 39.4 35.9 37.2 48.0 44.1 40.2 36.6 37.9 49.0 45.0 41.0 37.3 38.7 44.9 40.9 37.3 38.6 44.8 40.9 37.2 38.6 4.8 4.7 4.7 4.6 4.7 4.7 4.6 4.6 4.6 4.7 4.6 4.5 4.5 4.5 4.6 4.5 4.5 4.4 4.4 4.5 4.5 4.4 4.4 4.5 4.5 4.4 4.4 25.6 32.1 38.6 35.
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718420-YTG-B-1112 BHQ060 (5.0 Ton) Air on Evaporator Coil CFM 1450 1500 1550 1600 1800 2000 1450 1500 1550 1600 1800 2000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 62.5 59.2 55.8 50.0 65.0 61.4 57.8 51.7 52.8 67.4 63.6 59.8 53.5 54.6 69.8 65.8 61.8 55.3 56.3 68.4 64.2 57.4 58.5 71.0 66.6 59.6 60.6 3.4 3.3 3.3 3.2 3.4 3.3 3.3 3.2 3.2 3.4 3.3 3.3 3.2 3.2 3.4 3.3 3.3 3.2 3.2 3.3 3.3 3.2 3.2 3.3 3.3 3.
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718420-YTG-B-1112 BHQ060 (5.0 Ton) (Continued) Air on Evaporator Coil CFM 1450 1500 1550 1600 1800 2000 WB (°F) Net Capacity1 (MBh) Total Input (kW)2 90 77 72 67 62 77 72 67 62 57 77 72 67 62 57 77 72 67 62 57 72 67 62 57 72 67 62 57 49.5 46.6 43.8 39.2 50.0 47.1 44.2 39.6 39.8 50.4 47.5 44.5 39.9 40.2 50.8 47.9 44.9 40.3 40.5 48.7 45.7 41.0 41.2 49.6 46.5 41.7 41.9 5.2 5.2 5.1 5.1 5.2 5.2 5.1 5.1 5.1 5.2 5.2 5.1 5.1 5.1 5.2 5.2 5.1 5.1 5.1 5.2 5.1 5.1 5.1 5.2 5.1 5.1 5.1 24.5 34.2 43.8 39.
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718420-YTG-B-1112 Heating Capacities BHQ024-060 Size (Tons) Air Over Evaporator Coil CFM DB (°F) 55 600 70 80 55 024 (2.0) 800 70 80 55 900 70 80 55 1000 70 80 55 030 (2.5) 1050 70 80 55 1200 70 80 55 1000 70 80 55 036 (3.
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718420-YTG-B-1112 BHQ024-060 (Continued) Size (Tons) Air Over Evaporator Coil CFM DB (°F) 55 1400 70 80 55 042 (3.5) 1500 70 80 55 1600 70 80 55 1600 70 80 048 (4.0) 55 1800 70 80 55 1800 70 80 060 (5.0) 55 2000 70 80 Outdoor Temperature (°F @ 72% RH) Capacity1 & kW2 MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW -10 4.6 1.35 2.8 1.87 1.7 2.24 5.9 1.4 4.0 1.9 2.9 2.2 7.1 1.36 5.3 1.87 4.
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718420-YTG-B-1112 Airflow Performance Side Duct Application BHQ024-060 Size (Tons) Model Mode Cool High Heat Pump 024 (2.0) BHQ Heat Cool Heat Pump + Aux. Heat High Heat Pump 030 (2.5) BHQ Heat Heat Pump + Aux.
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718420-YTG-B-1112 BHQ024-060 (Continued) Size (Tons) Model Mode Cool High Heat Pump 036 (3.0) BHQ Heat Cool 042 (3.
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718420-YTG-B-1112 BHQ024-060 (Continued) Size (Tons) Model Mode Cool High Heat Pump 048 (4.0) BHQ Heat Cool Heat Pump + Aux. Heat High Heat Pump 060 (5.0) BHQ Heat Heat Pump + Aux.
PAGE 26
718420-YTG-B-1112 Bottom Duct Application BHQ024-060 Size (Tons) Model Mode Cool High Heat Pump 024 (2.0) BHQ Heat Cool Heat Pump + Aux. Heat High Heat Pump 030 (2.5) BHQ Heat 26 Heat Pump + Aux.
PAGE 27
718420-YTG-B-1112 BHQ024-060 (Continued) Size (Tons) Model Mode Cool High Heat Pump 036 (3.0) BHQ Heat Cool Heat Pump + Aux. Heat High Heat Pump 042 (3.5) BHQ Heat Heat Pump + Aux.
PAGE 28
718420-YTG-B-1112 BHQ024-060 (Continued) Size (Tons) Model Mode Cool High Heat Pump 048 (4.0) BHQ Heat Cool Heat Pump + Aux. Heat High Heat Pump 060 (5.0) BHQ Heat 28 Heat Pump + Aux.
PAGE 29
718420-YTG-B-1112 Additional Static Resistance Size (Tons) Model 024 (2.0) BHQ 030 (2.5) BHQ 036 (3.0) BHQ 042 (3.5) BHQ 048 (4.0) BHQ 060 (5.0) BHQ CFM Wet Indoor Coil Economizer1 Filter/Frame Kit Electric Heat 500 600 700 800 900 1000 1100 1200 700 800 900 1000 1100 1200 1300 700 800 900 1000 1100 1200 1300 1400 1100 1200 1300 1400 1500 1600 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 0.01 0.01 0.01 0.01 0.01 0.02 0.03 0.04 0.
PAGE 30
718420-YTG-B-1112 Electric Heat Minimum Supply Air Size (Tons) Model Voltage BHQ 208/230-1-60 3.8/5.0 024 (2.0) 030 (2.5) Minimum Supply Air (CFM) Heater kW 5.6/7.5 7.5/10.0 11.3/15.0 15.0/20.0 18.8/25.0 720 720 720 - - - BHQ 208/230-1-60 1000 1000 1000 1000 - - 036 (3.0) 1080 1080 1080 1080 1080 1080 1080 1080 1080 1080 1080 1080 - - BHQ 208/230-1-60 208/230-3-60 460-3-60 042 (3.5) BHQ 208/230-1-60 - - 1400 1400 - - 048 (4.0) BHQ 060 (5.
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718420-YTG-B-1112 Electrical Data BHQ024-060 Heat Pump With/Without Electric Heat Size (Tons) Volt MCC OD Fan Motors (each) FLA Supply Blower Motor FLA Compressors (each) RLA LRA 024 (2.0) 208/230-1-60 13.4 58 21 2.6 4.3 030 (2.5) 208/230-1-60 14.1 73 22 2.6 4.3 208/230-1-60 16.6 79 26 2.6 6.8 208/230-3-60 10.4 73 16 2.6 6.8 5.8 38 9 1.3 3.4 208/230-1-60 17.9 112 28 2.6 6.8 208/230-1-60 24.0 117 34 2.6 6.8 208/230-3-60 13.7 83 21 2.6 6.8 41 10 1.3 3.
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718420-YTG-B-1112 BHQ024-060 Heat Pump With/Without Electric Heat (Continued) Size (Tons) Volt MCC OD Fan Motors (each) FLA Supply Blower Motor FLA Compressors (each) RLA LRA 208/230-1-60 25.0 134 39 4.4 9.1 208/230-3-60 15.9 110 25 4.4 9.1 52 11 2.2 4.6 060 (5.0) 460-3-60 7.
PAGE 33
718420-YTG-B-1112 Typical BHQ024-060 Wiring Diagrams Typical BHQ024-060 Heat Pump 208/230-1-60 volt Wiring Diagram Johnson Controls Unitary Products 33
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718420-YTG-B-1112 Typical BHQ030-060 Heat Pump 230-3-60 volt Wiring Diagram 34 Johnson Controls Unitary Products
PAGE 35
718420-YTG-B-1112 Typical BHQ030-060 Heat Pump 460-3-60 volt Wiring Diagram Johnson Controls Unitary Products 35
PAGE 36
718420-YTG-B-1112 Weights and Dimensions BHQ Unit Weights Unit 4 Point Load Weight "D" CENTER OF GRAVITY FRONT OF UNIT "C" "A" 49-1/8 "B" X Weight (lbs.) Center of Gravity Size Model (Tons) Shipping Operating X Y 024 BHQ 360 355 22.25 25 (2.0) 030 BHQ 380 375 22.25 25 (2.5) 036 BHQ 405 400 22.25 25 (3.0) 042 BHQ 425 420 22.25 25 (3.5) 048 BHQ 445 440 22.25 25 (4.0) 060 BHQ 495 490 22.25 26 (5.0) 47-1/4 Y 4 Point Load Location (lbs.
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718420-YTG-B-1112 Heat Pump Unit Dimensions HIGH VOLTAGE CONN. 7/8" DIA. KNOCKOUT FRONT COMPRESSOR SERVICE ACCESS COMPARTMENT PANEL HIGH VOLTAGE CONN. 1-31/32" DIA. KNOCKOUT LOW VOLTAGE CONN. 7/8" DIA. KNOCKOUT “A” 2-3/8 (OVERALL) SIDE SUPPLY AIR OPENING REFRIGERANT CONNECTIONS SIDE RETURN AIR OPENING ELECTRICAL/FILTER SERVICE ACCESS COMPARTMENT PANEL 49-1/8 17-1/4 28-1/4 22-1/4 (OVERALL) 17-1/4 2-1/2 28-1/4 22-1/4 47-1/4 HIGH VOLTAGE CONN. 1-23/64" DIA.
PAGE 38
718420-YTG-B-1112 Unit Dimensions Front and Bottom HIGH VOLTAGE CONN. 1-3/32" DIA. KNOCKOUT 8-7/8 11-7/8 19-1/4 FRONT GAS SUPPLY 1-5/8" DIA. KNOCKOUT (1/2" NPTF CONNECTION) LOW VOLTAGE CONN. 7/8" DIA. KNOCKOUT LOW VOLTAGE CONN. 7/8" DIA. KNOCKOUT HIGH VOLTAGE CONN.
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718420-YTG-B-1112 Unit Typical Duct Applications ROOF CURB INSTALLATION REAR DUCT ROOF CURB INSTALLATION BOTTOM DUCT SLAB ON GROUND INSTALLATION Unit Typical Slab on Ground Installation SUPPLY AIR DUCT RETURN AIR DUCT FIELD SUPPLIED DISCONNECT SWITCH LOCATED TO REAR OF UNIT TO POWER SUPPLY CONTROL WIRING TO INDOOR THERMOSTAT Johnson Controls Unitary Products 39
PAGE 40
718420-YTG-B-1112 Unit Typical Roof Curb Installation FIELD SUPPLIED DISCONNECT SWITCH MOUNTED ON UNIT TO POWER SUPPLY CONTROL WIRING TO INDOOR THERMOSTAT SUPPLY AIR DUCT RETURN AIR DUCT Unit Accessory Dimensions Roof Curb1 RECOMMENDED DUCT SIZE 17-1/2" x 16-3/4" 42-2/3 40-3/4 3-1/2 45-1/8 17-5/8 17-1/4 43-1/4 OPENING FOR RETURN AIR DUCT 22 OPENING FOR SUPPLY AIR DUCT 14 1 RECOMMENDED DUCT SIZE 17-1/8" x 21-1/2" 1. 8” Roof Curb also available.
PAGE 41
718420-YTG-B-1112 Roof Curb Cross Section 1" 3/4" x 1" WIDE GASKETING FOR CURB FRAME AND ALL DUCT SUPPORT SURFACES UNIT BASE UNIT BASE RAIL WOOD NAILER COUNTERFLASHING 8" MIN.