Bard WG3S1 User manual

Form No. S3396-1112
Supersedes S3396-212
Page 1 of 12
The Bard Wall-Mount Electric Air Conditioner with gas fired heating is a self contained energy efficient system
which is designed to offer maximum indoor comfort at a minimal cost without using valuable indoor floor space
or outside ground space. This unit is the ideal product for versatile applications such as: new construction,
modular offices, school modernization, portable structures, correctional facilities, retail stores or other
commercial applications. Factory or field installed accessories are available to meet specific job requirements.
THE WALL-MOUNT™ STEP CAPACITY GAS/ELECTRIC - WG*S SERIES
Integrated Part Load Value (IPLV) Efficiency Up to 15.5 BTU/WATT
WG3S1, WG4S1, WG5S1 60HZ
23,000 to 56,500 BTUH Cooling Capacity
36,000 to 99,000 BTUH Heating Capacity
•High Efficiency
•Low Sound Level
Multi-Capacity Two-Stage:
Simple thermostatic control seamlessly
stages the compressor and indoor airflow
rate between high and low capacity
operations without cycling the compressor.
This helps to maximize comfort, humidity
control, energy efficiency and overall
reduction in compressor cycling for
improved system life.
Step Capacity Compressor:
Copeland step-capacity (2-stage) scroll
compressors are designed for increased
efficiency, quieter operation and improved
reliability for longer life.
R-410A Refrigerant:
Designed with R-410A (HFC) non-ozone
depleting refrigerant in compliance with
the Montreal protocol and 2010 EPA
requirements.
Thermal Expansion Valves:
All models use TXV.
Liquid Line Filter Drier:
Protects system against moisture.
Aluminum Finned Copper Coils:
Grooved tubing and enhanced louvered
fin for maximum heat transfer and energy
efficiency.
High & Low Pressure Switches are
Auto-Reset
Built-in lockout circuit resets from the
room thermostat. Provides commercial
quality protection to the compressor.
Compressor Control Module:
Standard on all units. Built-in off-delay
timer adjustable from 30 seconds to 5
minutes. 2-minute on-delay if power
interrupt. 120-second bypass for low
pressure control, and both soft and
manual lockouts for high and low pressure
controls. Alarm output for alarm relay.
Crankcase Heaters:
Factory installed crankcase heaters are
standard on all models. This helps to
insure ease of start at low temperatures
and improves compressor life.
Phase Rotation Monitor:
Standard on all 3 phase scroll
compressors. Protects against reverse
rotation if power supply is not properly
connected.
Twin Blowers:
Move air quietly. All models feature
variable speed blower motors providing
automatic airflow adjustment for high
static or free blow (non-ducted) operation
at a very low sound level. Motor overload
protection is standard on all models.
ECM Indoor Blower Motor:
Features a variable speed motor
providing super-high efficiency, low
sound levels and soft-start capabilities.
The motor is self-adjusting to provide the
proper airflow rate for the staged
capacity, and for higher static pressure in
ducted installations without user
adjustment or wiring changes.
Ventilation Controller:
Automatically adjusts damper position to
maintain the desired ventilation airflow rate
up to 480 cfm of fresh air during any
operation mode. Fully closes during
unoccupied modes. Factory set for 480
cfm. Also, CO2sensor ready - just add
CO2sensor for demand ventilation based
on CO2level in the space.
Electrical Components:
Are easily accessible for routine inspection
and maintenance through a right side,
service panel opening. Features a
lockable, hinged access cover to the circuit
breaker or rotary disconnect switch.
PTCR Start Assist:
Standard on 1-phase models.
Heat Exchanger:
Heavy duty 18-gauge stainless steel
tubular heat exchanger. Mechanically
joined construction. Ten-year warranty.
In-Shot Burners:
Advanced burner design, quiet operation.
Low NOx models available. Low NOx
models can be converted to LP gas. High
altitude kits available.
Integrated DSI Control:
Direct spark ignition control and
remote sensor delivers smooth,
proven ignition sequence.
Timed blower control and
diagnostics are also features of
integrated control.
Gas Controls:
Honeywell gas valve and
burner orifices are factory
standard for natural gas. Field
convertible to LP gas with
certified conversion kit.
Hinged Service Door:
Hinged door with compression latches (one lockable) for filter
service access, heat exchanger inspection, and indoor blower/
motor service.
Pre-Painted 20 Gauge Zinc Coated Steel Cabinet:
Cleaned, rinsed, sealed and dried before the polyurethane
primer is applied. The cabinet is handsomely finished with a
baked on textured enamel, which allows it to withstand 1000
hours of salt spray tests per ASTM B117-03.
16 Gauge Zinc Coated Unit Base
Two-Inch, Pleated Disposable Air Filters:
Are standard equipment.
Condenser Fan and Motor
Shroud Assembly:
Slides out for easy access.
Circuit Breakers/Rotary Disconnect:
Standard on all versions of single (230/208 volt) and three
phase (230/208 volt) equipment. Rotary disconnects are
standard on all versions of three phase (460 volt) equipment.
Slope Top:
Standard feature for water run-off.
Full Length Mounting Brackets:
Built into cabinet for improved appearance and easy installation.
Top Rain Flashing:
Standard feature on all models.
Ventilation Options:
Several patented ventilation options are available and can be
factory or field installed.
GREEN REFRIGERANT
R-410A
Engineered Features
•Complies with efficiency requirements of ANSI/ASHRAE/IESNA 90.1-2007.
•Certified to ANSI/ARI Standard 390-2003 for SPVU (Single Package Vertical Units).
• Intertek ETL Listed to Standard for Safety Heating and Cooling Equipment ANSI/UL
1995/CSA 22.2 No. 236-05, Third Edition.
• Intertek ETL Listed to Standard for Gas-Fired Central Furnaces ANSI Z21.47-2006, CSA
2.3-2006 Fifth Edition, Addenda A dated 10-01-2007, Addenda B dated 06-01-2008.
•Commercial Product - Not intended for Residential application.
MEA # (Heating): 73-03-E
MEA # (Cooling): 179-03-E

Form No. S3396-1112
Supersedes S3396-212
Page 2 of 12
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Specifications
1Add 45 lbs. for factory installed WGSCRVMP-5 Commercial Room Ventilator or WGSEIFM-5 Economizer, and 90 lbs. for WGSERV-5 Energy Recovery Ventilator.
*Based on 75°C copper wire. All wiring must conform to the National Electrical Code and all local codes.
** Maximum time delay fuse or HACR type circuit breaker.
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Form No. S3396-1112
Supersedes S3396-212
Page 3 of 12
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1Motor will deliver consistent CFM through voltage supply range with no deterioration (197-253V for 230/208V models, 414-506V for 460V models).
2Continuous CFM is the total air being circulated during continuous (manual) fan mode.
3Will occur automatically with a call for “Y1” signal from thermostat.
4Will occur automatically with a call for “Y2” signal from thermostat.
5Will occur automatically with a call for “W” signal from thermostat.
6Constant CFM of Variable Speed Motor should maintain mid-rise temperature differential through range of allowable static.
Bard Wall-Mounts are designed to provide optional ventilation packages to meet all of your ventilation and indoor air quality requirements.
All units are equipped with a barometric fresh air damper as the standard ventilation package. All ventilation packages can be built-in at the
factory, or field-installed at a later date.
BLANK OFF PLATE - WGSBOP STANDARD
A blank off plate is installed on the inside of the service door. It covers the air inlet openings which restricts any outside
air from entering the unit. The blank off plate should be utilized in applications where outside air is not required to be
mixed with the conditioned air.
COMMERCIAL ROOM VENTILATOR - WGSCRVMP-5 OPTIONAL
The built-in commercial room ventilator is internally mounted behind the service door and allows outside ventilation air,
up to 50% of the total airflow rating of the unit, to be introduced through the air inlet openings. It includes a built-in
exhaust air damper with integral bug screen. Automatic control is integrated to maintain desired ventilation air at the
various supply airflows while on Stage 1, Stage 2 or ventilation modes of operation.
The commercial room ventilator (CRV) is a simple and innovative approach to improving the indoor air quality by
providing fresh air intake and exhaust capability through the CRV. The damper can be easily adjusted to control the
amount of fresh air supplied into the building. The CRV can be controlled by indoor blower operation or field controlled
based on room occupancy. The CRV is power open - spring return on power loss. Complies with ANSI/ASHRAE
Standard 62.1 “Ventilation for Acceptable Indoor Air Quality”.
CO2Sensor Ready: • WGSCRVMP-5 is designed for CO2based on ventilation control
by simply wiring in a field installed CO2sensor if desired.
ECONOMIZER - WGSEIFM-5 OPTIONAL
The built-in economizer system is internally mounted behind the service door and allows outdoor air to be introduced
through the air inlet openings. The amount of outdoor air varies in response to the system controls and settings defined
by the end user. It includes a built-in exhaust air damper. The economizer is designed to provide “free cooling” when
outside air conditions are cool and dry enough to satisfy cooling requirements without running the compressor. This in
turn provides lower operating costs, while extending the life of the compressor.
Standard Features:
• One Piece Construction - Easy to install with no mechanical linkage adjustment required.
• Exhaust Air Damper - Built in with positive closed position. Provides exhaust air capability to prevent
pressurization of tight buildings.
• Actuator Motor - 24 volt, power open, spring return with built in torque limiting switch.
• Proportioning Type Control - for maximum “free cooling” economy and comfort.
• Moisture Eliminator & Prefilter - permanent, washable aluminum construction.
• Enthalpy Control - adjustable to monitor outdoor temperature and humidity.
• Minimum Position Potentiometer - adjustable to control minimum damper blade position for ventilation purposes.
• Mixed Air Sensor - to monitor outside and return air to automatically modulate damper position.
WALL-MOUNT ENERGY RECOVERY VENTILATOR - WGSERV-5 OPTIONAL
The wall-mount energy recovery ventilator (WGSERV-5) is a highly innovative approach to address indoor air quality ventilation
requirements as established by ANSI/ASHRAE Standard 62.1. The WGSERV-5 allows up to 450 CFM (depending upon
speed setting) of fresh air and exhaust through the unit while maintaining superior indoor comfort and humidity levels. In most
cases this can be accomplished without increasing equipment sizing or operating costs. Heat transfer efficiency is up to 74%
during summer and 80% during winter conditions.
The WGSERV-5 consists of a unique “rotary energy recovery cassette” that provides effective sensible and latent heat
transfer capabilities during summer and winter conditions. Various control schemes are addressed including limiting ventilation
during building occupancy only.
The WGSERV-5 is designed to be internally mounted behind the service door in the WGS Gas/Electric units. It can be built-
in at the factory or field installed as an option. WGSERV-5 can be independently adjusted for intake and exhaust rates.
Manufactured under U.S. Patent Nos. 5,301,744; 5,485,878
NOTE: See Page 4 for WGSCRV Performance Data &
Page 5 & 6 for WGSERV Performance Data
COMMERCIAL ROOM VENTILATOR
ECONOMIZER
Indoor Blower Performance 1
Ventilation System Packages
ENERGY RECOVERY VENTILATOR

Form No. S3396-1112
Supersedes S3396-212
Page 4 of 12
WG3S Ventilation Airflow
0
100
200
300
400
500
600
700
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
Vent Position
Ventilation Airflow (CFM)
Stage #2
Operation
Blower Only
& Stage #1
Operation
WG4S Ventilation Airflow
0
100
200
300
400
500
600
700
800
900
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
Vent Position
Ventilation Airflow (CFM)
Stage #2
Operation
Stage #1
Operation
Blower Only
WG5S Ventilation Airflow
0
100
200
300
400
500
600
700
800
900
1000
0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30
Vent Position
Ventilation Airflow (CFM)
Stage #2
Operation
Stage #1
Operation
Blower Only
WGSEIFM-5 Economizer and WGSCRVMP-5 Commercial Ventilator Airflow

Form No. S3396-1112
Supersedes S3396-212
Page 5 of 12
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LEGEND:
VLT = Ventilation Load - Total
VLS = Ventilation Load - Sensible
VLL = Ventilation Load - Latent
HRT = Heat Recovery - Total
HRS = Heat Recovery - Sensible
HRL = Heat Recovery - Latent
WVL = Winter Ventilation Load
WHR = Winter Heat Recovery
Energy Recovery Ventilator Performance Data — WGSERV-A5 (230V) & WGSERV-C5 (460V)

Form No. S3396-1112
Supersedes S3396-212
Page 6 of 12
This page intentionally left blank.

Form No. S3396-1112
Supersedes S3396-212
Page 7 of 12
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saG taeH eulaV .tF.uC/UTB teeF0006otpU
ecifirOllatsnI
teeF0008ot1006 erusserPseriuqeR dnaegnahChctiwS nwohSsaecifirO teeF000,01ot1008 erusserPseriuqeR dnaegnahChctiwS nwohSsaecifirO
UTB000,52 renruBreP 0052 05.1 05.1 54.1
hctiwSerusserP)55.(dradnatS tiKnoisrevnoCnidedulcnI)24.(hctiwSerusserP
lanoitpO dleiF%01 detrevnoC etareD saG taeH eulaV .tF.uC/UTB teeF0006otpU
ecifirOllatsnI
teeF0008ot1006 erusserPseriuqeR dnaegnahChctiwS nwohSsaecifirO teeF000,01ot1008 erusserPseriuqeR dnaegnahChctiwS nwohSsaecifirO
056,22-005,22 UTB renruBreP
0052 54.1 54.1 04.1
hctiwSerusserP)55.(dradnatS tiKnoisrevnoCnidedulcnI)24.(hctiwSerusserP
Heating input, and thus heating output, decreases with altitude. No orifice change is required up to 6,000 feet elevation and derate occurs naturally due
to altitude impact. Natural gas models may require orifice change based on BTU content of gas. See Natural Gas Orifice and Altitude Tables on
next page for details. For Propane Gas see the Propane Gas Conversion Table below.
All orifice sizes shown are millimeters (mm).
Above 6,000 feet elevation orifice changes are required, and capacity reductions are a function of altitude impact and orifice change. Pressure switch
change is required above 6,000 feet elevation. For Natural Gas see the Orifice and Altitude Tables on next page. For Propane Gas see the Propane
Gas Conversion Table below.
Important Information Concerning Altitude Impact on Heating Input Ratings
Propane Gas Conversion Kits -- Fits All WG-Series Models
Gas Pressure Inches W.C.
Minimum permissible gas supply pressure for purpose of input adjustment: Natural 4.5 LP 11.0
Maximum permissible gas supply pressure for purpose of input adjustment: Natural 11.0 LP 13.0
Manifold Pressure: Natural 3.5 LP 10.0

Form No. S3396-1112
Supersedes S3396-212
Page 8 of 12
yrotcaF dradnatS tupnI *taeHsaG eulaV .tF.uC/UTB oNteeF000,6otpU tpecxEsegnahC tnetnoCUTBrof
teeF000,8ot100,6 hctiwSerusserPseriuqeR ecifirOdnaegnahC egnahC tnetnoCUTBnodesaB teeF000,01ot100,8 hctiwSerusserPseriuqeR ecifirOdnaegnahC egnahC tnetnoCUTBnodesaB
UTB00052 renruBreP 947-00709.208.207.2
997-05708.207.206.2
948-00807.206.205.2
998-05806.205.254.2
949-00905.254.2 )04.2(
999-05954.2 )04.2( 53.2
**9401-0001 )04.2( 53.2 ]03.2[
0011-0501 ]03.2[ 52.202.2
hctiwSerusserP)55.(dradnatS )24.(tiKhctiwSerusserPedutitlAhgiH981-0268redrO
ezisecifirodellatsniyrotcafdradnatsehtsi)04.2( dellatsnidleifroftinuehthtiwdeppihserasecifiro]03.2[ etared%01lanoitpo
lanoitpO dleiF%01 detrevnoC etareD
*taeHsaG eulaV .tF.uC/UTB oNteeF000,6otpU tpecxEsegnahC tnetnoCUTBrof
teeF000,8ot100,6 hctiwSerusserPseriuqeR ecifirOdnaegnahC egnahC tnetnoCUTBnodesaB teeF000,01ot100,8 hctiwSerusserPseriuqeR ecifirOdnaegnahC egnahC tnetnoCUTBnodesaB
UTB00522 renruBreP 947-00757.207.206.2
997-05707.206.205.2
948-00806.205.2
998-05805.254.2 )04.2(
949-009 )04.2( 53.2 ]03.2[
999-05953.2 ]03.2[ 52.2
**9401-0001 ]03.2[ 52.202.2
0011-050152.252.202.2
hctiwSerusserP)55.(dradnatS )24.(tiKhctiwSerusserPedutitlAhgiH981-0268redrO
dleifroftinuehthtiwdeppihserasecifiro]03.2[ .etartupni%01lanoitpodellatsni tupnidetarllufrofezisecifirodellatsniyrotcafehtsi)04.2(
*
**
.ytivargcificeps06.,detarutas,F06,yrucreMsehcni00.03:snoitidnocdradnatstA aesdnasagtfuc/UTB5201lanimonnodesabsgnitartupnidradnatsdnagnizisecifiroyrotcafsaGlarutaNllA snoitidnoclevel
All other orifice sizes shown are available as individual items. See Orifice charts below for part numbers and number required.
.oNtraPdraB)mm(eziSecifirOretemaiDecifirO
290-010901.26280.0
880-010951.26480.0
780-010902.26680.0
680-010952.25880.0
280-010903.25090.0
580-010953.25290.0
970-010904.25490.0
480-010954.24690.0
390-010905.24890.0
490-010906.24201.0
590-010907.23601.0
690-010957.22801.0
790-010908.22011.0
890-010909.22411.0
deriuqeRsecifirOfo.oN gnitaRtupnItinUnodesaB
000,54)2(
000,05)2(
000,86)3(
000,57)3(
000,09)4(
000,001)4(
000,311)5(
000,521)5(
Natural Gas Orifice and Altitude Tables

Form No. S3396-1112
Supersedes S3396-212
Page 9 of 12
erutarepmeTroodtuO—ataDnoitacilppAgnilooCegatSdn
2
1
ledoM .B.W/.B.D

gnilooC yticapaC F°05F°55F°06F°56F°07F°57 F°08 F°58 F°09 F°59 F°001 F°501 F°011 F°511
1S3GW
26/57 gnilooClatoT gnilooCelbisneS 057,44 009,23 053,34 572,23 579,14 526,13 575,04 579,03 002,93 053,03 008,73 007,92 053,63 520,92 578,43 053,82 524,33 056,72 579,13 579,62 058,03 574,62 527,92 000,62 526,82 005,52
0
05,72
0
00,52
76/08 gnilooClatoT gnilooCelbisneS 577,94 528,23 051,84 051,23 055,64 005,13 529,44 528,03 523,34 571,03 007,14 005,92 529,93 057,82 051,83 000,82 573,63 522,72 006,43 574,62 526,33 571,62 576,23 009,52 527,13 006,52
0
57,03
0
03,52
27/58 gnilooClatoT gnilooCelbisneS 520,25 006,23 008,05 000,23 575,94 053,13 053,84 057,03 521,74 521,03 009,54 005,92 058,44 528,82 008,34 051,82 057,24 574,72 527,14 577,62 577,93 004,62 058,73 000,62 529,53 006,52
0
00,43
0
02,52
1S4GW
26/57 gnilooClatoT gnilooCelbisneS 520,65 004,04 005,45 577,93 579,25 051,93 054,15 525,83 529,94 529,73 004,84 003,73 059,64 008,63 005,54 003,63 050,44 577,53 006,24 572,53 577,04 002,43 059,83 051,33 521,73 570,23
0
03,53
0
00,13
76/08 gnilooClatoT gnilooCelbisneS 053,26 574,14 006,06 007,04 058,85 529,93 001,75 051,93 053,55 573,83 006,35 006,73 528,15 008,63 050,05 000,63 572,84 571,53 005,64 573,43 058,44 527,33 002,34 001,33 055,14 054,23
0
09,93
0
08,13
27/58 gnilooClatoT gnilooCelbisneS 524,96 526,14 525,76 578,04 526,56 031,04 527,36 573,93 528,16 526,83 009,95 009,73 579,75 571,73 050,65 054,63 521,45 527,53 002,25 579,43 573,05 571,43 055,84 573,33 527,64 575,23
0
09,44
0
08,13
1S5GW
26/57 gnilooClatoT gnilooCelbisneS 007,96 578,94 008,76 050,94 009,56 522,84 000,46 004,74 001,26 575,64 052,06 008,54 523,85 579,44 004,65 051,44 574,45 523,34 525,25 525,24 008,05 527,14 570,94 529,04 053,74 521,04
0
06,54
0
03,93
76/08 gnilooClatoT gnilooCelbisneS 057,47 523,84 577,27 055,74 008,07 577,64 528,86 000,64 058,66 522,54 058,46 004,44 577,26 005,34 576,06 006,24 006,85 007,14 005,65 008,04 059,45 574,04 004,35 051,04 058,15 528,93
0
03,05
0
05,93
27/58 gnilooClatoT gnilooCelbisneS 008,97 056,64 000,87 570,64 002,67 005,54 004,47 529,44 006,27 053,44 008,07 057,34 521,96 002,34 054,76 056,24 527,56 001,24 521,46 055,14 008,16 578,04 574,95 002,04 051,75 525,93
0
58,45
0
08,83
erutarepmeTroodtuO—ataDnoitacilppAgnilooCegatSts
1
1
ledoM .B.W/.B.D

gnilooC yticapaC F°05F°55F°06F°56F°07F°57 F°08 F°58 F°09 F°59 F°001 F°501 F°011 F°511
1S3GW
26/57 gnilooClatoT gnilooCelbisneS 529,03 053,32 528,92 057,22 527,82 051,22 526,72 055,12 525,62 059,02 004,52 004,02 522,42 057,91 050,32 001,91 578,12 054,81 007,02 528,71 578,91 054,71 050,91 570,71 522,81 007,61
0
04,71
0
03,61
76/08 gnilooClatoT gnilooCelbisneS 050,53 576,32 057,33 050,32 054,23 524,22 051,13 008,12 058,92 571,12 006,82 005,02 002,72 577,91 008,52 050,91 004,42 523,81 000,32 575,71 051,22 523,71 003,12 570,71 054,02 528,61
0
06,91
0
06,61
27/58 gnilooClatoT gnilooCelbisneS 057,83 579,22 004,73 054,22 050,63 529,12 007,43 004,12 053,33 578,02 000,23 004,02 055,03 528,91 001,92 052,91 056,72 576,81 051,62 521,81 052,52 528,71 053,42 525,71 054,32 522,71
0
55,22
0
59,61
1S4GW
26/57 gnilooClatoT gnilooCelbisneS 572,14 056,92 570,04 521,92 578,83 006,82 576,73 570,82 574,63 055,72 003,53 000,72 001,43 574,62 009,23 059,52 007,13 524,52 525,03 529,42 523,92 053,42 521,82 577,32 529,62 002,32
0
07,52
0
06,22
76/08 gnilooClatoT gnilooCelbisneS 576,54 570,03 053,44 574,92 520,34 578,82 007,14 572,82 053,04 576,72 000,93 001,72 056,73 574,62 003,63 058,52 059,43 522,52 006,33 006,42 523,23 521,42 050,13 056,32 577,92 571,32
0
05,82
0
56,22
27/58 gnilooClatoT gnilooCelbisneS 525,15 058,03 000,05 051,03 574,84 054,92 059,64 057,82 524,54 050,82 009,34 004,72 003,24 056,62 007,04 009,52 001,93 051,52 054,73 053,42 052,63 059,32 050,53 055,32 578,33 051,32
0
07,23
0
57,22
1S5GW
26/57 gnilooClatoT gnilooCelbisneS 000,05 008,63 057,84 523,63 005,74 058,53 052,64 573,53 000,54 009,43 057,34 054,43 576,24 570,43 006,14 007,33 525,04 523,33 524,93 059,23 005,73 001,23 575,53 522,13 056,33 053,03
0
07,13
0
05,92
76/08 gnilooClatoT gnilooCelbisneS 055,85 058,73 006,65 051,73 056,45 054,63 007,25 057,53 057,05 050,53 058,84 053,43 577,64 525,33 007,44 007,23 006,24 578,13 005,04 570,13 051,93 058,03 008,73 526,03 054,63 004,03
0
01,53
0
02,03
27/58 gnilooClatoT gnilooCelbisneS 521,26 059,53 054,06 055,53 577,85 051,53 001,75 057,43 524,55 053,43 008,35 009,33 571,25 055,33 055,05 002,33 529,84 058,23 523,74 055,23 574,54 058,13 526,34 571,13 577,14 005,03
0
59,93
0
08,92
1Below 50°F requires a factory of field installed low ambient control. 2Return air temperature °F

Form No. S3396-1112
Supersedes S3396-212
Page 10 of 12
This page intentionally left blank.