Trane Foundation GBC240 Installation, Operation And Maintenance Manual

Installation, Operation, and Maintenance
Packaged Rooftop Air
Conditioners Foundation™
™
Cooling and Gas/Electric
15 to 25 Tons, 60 Hz
Model Numbers: GBC180-300
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning
equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person
could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that
are attached to the equipment.
November 2020
RT-SVX51H-EN
Introduction
Read this manual thoroughly before operating or
servicing this unit.
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as
required. Your personal safety and the proper
operation of this machine depend upon the strict
observance of these precautions.
The three types of advisories are defined as follows:
WARNING
CAUTION
NOTICE
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury. It could also be used to alert
against unsafe practices.
Indicates a situation that could result in
equipment or property-damage only
accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made
chemicals can affect the earth’s naturally occurring
stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified
chemicals that may affect the ozone layer are
refrigerants that contain Chlorine, Fluorine and Carbon
(CFCs) and those containing Hydrogen, Chlorine,
Fluorine and Carbon (HCFCs). Not all refrigerants
containing these compounds have the same potential
impact to the environment. Trane advocates the
responsible handling of all refrigerants-including
industry replacements for CFCs and HCFCs such as
saturated or unsaturated HFCs and HCFCs.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or
serious injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION
hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and
grounding as described in NEC and your local/
state/national electrical codes.
WARNING
Personal Protective Equipment (PPE)
Required!
Failure to wear proper PPE for the job being
undertaken could result in death or serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual
and on the tags, stickers, and labels, as well as the
instructions below:
•
Before installing/servicing this unit,
technicians MUST put on all PPE required for
the work being undertaken (Examples; cut
resistant gloves/sleeves, butyl gloves, safety
glasses, hard hat/bump cap, fall protection,
electrical PPE and arc flash clothing).
ALWAYS refer to appropriate Safety Data
Sheets (SDS) and OSHA guidelines for
proper PPE.
•
When working with or around hazardous
chemicals, ALWAYS refer to the appropriate
SDS and OSHA/GHS (Global Harmonized
System of Classification and Labelling of
Chemicals) guidelines for information on
allowable personal exposure levels, proper
respiratory protection and handling
instructions.
•
If there is a risk of energized electrical
contact, arc, or flash, technicians MUST put
on all PPE in accordance with OSHA, NFPA
70E, or other country-specific requirements
for arc flash protection, PRIOR to servicing
the unit. NEVER PERFORM ANY SWITCHING,
DISCONNECTING, OR VOLTAGE TESTING
WITHOUT PROPER ELECTRICAL PPE AND
ARC FLASH CLOTHING. ENSURE
ELECTRICAL METERS AND EQUIPMENT ARE
PROPERLY RATED FOR INTENDED
VOLTAGE.
Important Responsible Refrigerant
Practices
Trane believes that responsible refrigerant practices
are important to the environment, our customers, and
the air conditioning industry. All technicians who
handle refrigerants must be certified according to local
rules. For the USA, the Federal Clean Air Act (Section
608) sets forth the requirements for handling,
reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these
service procedures. In addition, some states or
municipalities may have additional requirements that
must also be adhered to for responsible management
of refrigerants. Know the applicable laws and follow
them.
©2020
RT-SVX51H-EN
Introduction
WARNING
Follow EHS Policies!
Failure to follow instructions below could result in
death or serious injury.
•
•
All Trane personnel must follow the
company’s Environmental, Health and Safety
(EHS) policies when performing work such as
hot work, electrical, fall protection, lockout/
tagout, refrigerant handling, etc. Where local
regulations are more stringent than these
policies, those regulations supersede these
policies.
Non-Trane personnel should always follow
local regulations.
NOTICE
Water Damage!
By carefully reviewing the information within this
manual and following the instructions, the risk of
improper operation and/or component damage will be
minimized.
It is important that periodic maintenance be performed
to help assure trouble free operation. A maintenance
schedule is provided at the end of this manual. Should
equipment failure occur, contact a qualified service
organization with qualified, experienced HVAC
technicians to properly diagnose and repair this
equipment.
Copyright
This document and the information in it are the
property of Trane, and may not be used or reproduced
in whole or in part without written permission. Trane
reserves the right to revise this publication at any time,
and to make changes to its content without obligation
to notify any person of such revision or change.
Failure to follow instructions below could result in
equipment and property damage.
Non-factory penetrations through the base of this
unit are not allowed. Any penetration in the base
of the unit may affect the water tight integrity of
the unit and lead to water leaks into the
conditioned space.
All trademarks referenced in this document are the
trademarks of their respective owners.
Overview of Manual
Factory training is available through Trane University™
to help you learn more about the operation and
maintenance of your equipment. To learn about
available training opportunities contact Trane
University™.
One copy of this document ships inside the control
panel of each unit and is customer property. It must be
retained by the unit’s maintenance personnel.
Trademarks
Factory Training
Online: www.trane.com/traneuniversity
I m p o r t a n t : Do not release refrigerant to the
atmosphere! If adding or removing
refrigerant is required, the service
technician must comply with all federal,
state, and local laws.
Phone: 855-803-3563
This booklet describes the proper installation, startup,
operation, and maintenance procedures for air cooled
systems.
•
Minor running edits
•
Updated Wiring Diagram table
RT-SVX51H-EN
Email: [email protected]
Revision History
3
Table of Contents
Model Number Description . . . . . . . . . . . . . . . . . 6
Unit Disconnect (FIYUDC). . . . . . . . . . . . . 26
General Information . . . . . . . . . . . . . . . . . . . . . . . . 7
Through the Base Gas Utility
Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Field Installed Connections . . . . . . . . . . . 27
Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Exterior Inspection . . . . . . . . . . . . . . . . . . . . 7
Inspection for Concealed
Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . .
Economizer Control Actuator
Electromechanical Control . . . . . . . . . . . . .
JADE Economizer Control - Low Leak
Economizer (LLE) Only . . . . . . . . . . . . . . . .
System Input Devices and
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Initiation of Operating Modes - JADE
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
8
8
8
8
9
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . 10
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Unit Foundation . . . . . . . . . . . . . . . . . . . . . . . . . 18
Horizontal Units. . . . . . . . . . . . . . . . . . . . . . 18
Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
General Unit Requirements. . . . . . . . . . . . . . .
Factory Installed Economizer. . . . . . . . . .
Main Electrical Power
Requirements . . . . . . . . . . . . . . . . . . . . . . .
External Vent Hood Installation. . . . . . . .
TCO1 Instructions . . . . . . . . . . . . . . . . . . . .
Condensate Drain
Configuration. . . . . . . . . . . . . . . . . . . . . . . .
Filter Installation . . . . . . . . . . . . . . . . . . . . .
Field Installed MERV13 Filters . . . . . . . . .
Field Installed Power Wiring . . . . . . . . . .
18
19
Main Unit Power. . . . . . . . . . . . . . . . . . . . . . . . .
Standard Wiring . . . . . . . . . . . . . . . . . . . . .
Optional TBUE Wiring (Through the
Base Electrical Option) . . . . . . . . . . . . . . .
Control Power Transformer . . . . . . . . . . .
Controls using 24 Vac . . . . . . . . . . . . . . . .
Requirements of Gas Heat . . . . . . . . . . . .
Gas Heat Data . . . . . . . . . . . . . . . . . . . . . . .
Voltage Imbalance . . . . . . . . . . . . . . . . . . .
Electrical Phasing (Three Phase
Motors) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Crankcase Heaters . . . . . . .
Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
21
19
19
20
20
21
21
21
21
22
22
23
23
25
25
26
26
Factory-Mounted Unit Options. . . . . . . . . . . . 26
4
Pre Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Verifying Proper Air Flow (Units with
Belt Drive Indoor Fan) . . . . . . . . . . . . . . . . . . . . 29
Electromechanical Controls – Test
Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Electromechanical Controls - Sequence
Of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling without an Economizer . . . . . . .
Evaporator Fan Operation (for Gas
Units) - Standard Economizer . . . . . . . . .
Evaporator Fan Operation (for
Cooling Only Units) - Standard
Economizer. . . . . . . . . . . . . . . . . . . . . . . . . .
Economizer Set-Up - Standard
Economizer . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling with an Economizer Standard Economizer . . . . . . . . . . . . . . . .
Heating Operation (Units with
Electric Heat) - Standard
Economizer. . . . . . . . . . . . . . . . . . . . . . . . . .
Heating Operation (for Gas Units) Standard Economizer . . . . . . . . . . . . . . . .
Ignition Module Low, Medium and
High Heat . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drain Pan Condensate Overflow
Switch (Optional) . . . . . . . . . . . . . . . . . . . .
Low Ambient Operation
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Horsepower Motor Overload . . . . . . .
Two-Speed Indoor Fan Control . . . . . . . . . . .
Cooling Operation . . . . . . . . . . . . . . . . . . .
Economizer Minimum Position
Handling for 2–Speed Fan . . . . . . . . . . . .
Phase Monitor . . . . . . . . . . . . . . . . . . . . . . .
Low Pressure Cutout . . . . . . . . . . . . . . . . .
High Pressure Cutout and
Temperature Discharge Limit . . . . . . . . .
Locking Safety Device with
Compressor Anti Short Cycle
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coil Frost Protection. . . . . . . . . . . . . . . . . .
Heating Operation . . . . . . . . . . . . . . . . . . .
Emergency Stop . . . . . . . . . . . . . . . . . . . . .
30
30
30
30
30
30
30
31
31
31
31
31
31
32
32
32
32
32
32
32
32
33
JADE Controls - Low Leak Economizer
Sequence of Operation. . . . . . . . . . . . . . . . . . . 33
Economizer Set-Up. . . . . . . . . . . . . . . . . . . 36
RT-SVX51H-EN
Table of Contents
Drain Pan Condensate Overflow Switch
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Low Ambient Operation
(Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10 Horsepower Motor Overload . . . . . . . 36
Two-Speed Indoor Fan Control . . . . . . . . 37
Phase Monitor . . . . . . . . . . . . . . . . . . . . . . . 37
Low Pressure Cutout . . . . . . . . . . . . . . . . . 37
High Pressure Cutout and
Temperature Discharge Limit . . . . . . . . . 37
Coil Frost Protection. . . . . . . . . . . . . . . . . . 37
Initiation of Operating Modes . . . . . . . . . 37
Standard Economizer Start-Up. . . . . . . . . . . . 37
LLE Controls Test Procedure. . . . . . . . . . . . . . 38
Compressor Start-Up . . . . . . . . . . . . . . . . . . . . 38
Heating Start-Up . . . . . . . . . . . . . . . . . . . . . . . . 38
Heating Season . . . . . . . . . . . . . . . . . . . . . . 42
Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 42
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Standard Troubleshooting . . . . . . . . . . . . . . .
.....................................
Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Leak Economizer – (LLE)
Troubleshooting . . . . . . . . . . . . . . . . . . . . .
Resetting Cooling and Heating
Lockouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Method 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Method 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condensate Overflow Switch . . . . . . . . .
45
45
45
45
46
46
46
46
Unit Economizer Control (ECA) . . . . . . . . . . . 46
Error Code. . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Final System Set Up . . . . . . . . . . . . . . . . . . . . . 39
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Fan Belt Adjustment-Belt Drive
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
For Commercial Unitary Equipment
Rated 25 Tons and Under and Related
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Basic Warranty . . . . . . . . . . . . . . . . . . . . . . 49
Exclusions and Limitations . . . . . . . . . . . 49
Monthly Maintenance. . . . . . . . . . . . . . . . . . . .
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condensate Overflow Switch . . . . . . . . .
Cooling Season . . . . . . . . . . . . . . . . . . . . . .
RT-SVX51H-EN
41
41
41
41
5
Model Number Description
Digit 1 — Unit Type
Digit 11— Minor Design Sequence
Digit 17 — Condenser Coil Protection
G = Packaged Gas/Electric
A = Rev A
0 = Standard Coil
4 = CompleteCoat™ Condenser Coil
Digit 2 — Efficiency
Digit 12,13 — Service Sequence
B = ASHRAE 90.1 - 2013
00 = None
Digit 3 — Airflow Configuration
Digit 14 — Fresh Air
C = Convertible
0 = No Fresh Air
0 = No Through The Base Provisions
Selection3, 4
A = Manual Outside Air Damper 0-25%
Digit 4, 5, 6 — Nominal Gross Cooling
Capacity (MBh)
180 = 15 Tons
210 = 17.5 Tons
240 = 20 Tons
300 = 25 Tons
B = Motorized Outside Air Damper 0-50%
C = Economizer, Dry Bulb 0-100% without
Barometric Relief
D = Economizer, Dry Bulb 0-100% with
Barometric Relief1
Digit 7 — Major Design Sequence
E = Economizer, Reference Enthalpy 0-100%
without Barometric Relief
A = Rev A
F = Economizer, Reference Enthalpy 0-100%
with Barometric Relief1
Digit 8 — Voltage Selection
G = Economizer, Comparative Enthalpy 0100% without Barometric Relief
3 = 208-230/60/3
4 = 460/60/3
W = 575/60/3
Digit 9 — Unit Controls
E = Electromechanical
Digit 10 — Heating Capacity
H = Gas Heat - High
L = Gas Heat - Low
M = Gas Heat - Medium
X = Gas Heat - SS Ht Ex - Low
Y = Gas Heat - SS Ht Ex - Medium
Z = Gas Heat - SS Ht Ex - High
H = Economizer, Comparative Enthalpy 0100% with Barometric Relief1
J = Downflow Low Leak Economizer, Dry Bulb
w/o Barometric Relief
L = Downflow Low Leak Economizer,
Reference Enthalpy w/o Barometric Relief
N = Downflow Low Leak Economizer,
Comparative Enthalpy w/o Barometric Relief
Digit 15 — Supply Fan/Drive Type/
Motor
A = Through The Base Electric
B = Through The Base Gas1
C = Through The Base Electric/Gas
D = Through-the-Base Access
Digit 19 — Disconnect Switch
0 = No Disconnect
1 = Unit Mounted Non-Fused Disconnect
Switch2
Digit 20-24
Not Used
Digit 25 — System Monitoring
Controls
0 = No Monitoring Controls
A = Condensate Drain Pan Overflow Switch
Digit 26 — System Monitoring
Controls
B = Economizer Fault Detection and
Diagnostics (FDD)5
Model Number Notes
Notes:
1.
2.
0 = Standard Motor
1 = Oversized Motor6
7 = Multi-Speed Standard Motor
9 = Multi-Speed Oversized Motor
3.
Digit 16 — Access
5.
0 = Standard Fork Access
F = Third Side Condenser Fork Access (15-25
Ton)
6
Digit 18 — Through The Base
Provisions
4.
6.
Some field set up required.
Must be ordered with Through the- Base
Electrical option.
All Factory Installed Options are Built-toOrder. Check order services for
estimated production cycle.
Factory installed economizers only
available in downflow configuration.
Fault Detection and Diagnostics (FDD) is
available on Low Leak Economizers only.
10 hp oversized motor is factory
installed only.
RT-SVX51H-EN
General Information
WARNING
Fiberglass Wool!
Exposure to glass wool fibers without all
necessary PPE equipment could result in cancer,
respiratory, skin or eye irritation, which could
result in death or serious injury. Disturbing the
insulation in this product during installation,
maintenance or repair will expose you to airborne
particles of glass wool fibers and ceramic fibers
known to the state of California to cause cancer
through inhalation.
You MUST wear all necessary Personal Protective
Equipment (PPE) including gloves, eye protection,
a NIOSH approved dust/mist respirator, long
sleeves and pants when working with products
containing fiberglass wool.
I m p o r t a n t : Do not proceed with installation of a
damaged unit without sales
representative’s approval.
•
Visually inspect the complete exterior for signs of
shipping damages to unit or packing material.
•
Verify that the nameplate data matches the sales
order and bill of lading.
•
Verify that the unit is properly equipped and there
are no material shortages.
•
Verify that the power supply complies with the unit
nameplate specifications.
Inspection for Concealed Damage
Visually inspect the components for concealed damage
as soon as possible after delivery and before it is
stored.
Precautionary Measures:
If concealed damage is discovered:
•
Avoid breathing fiberglass dust.
•
•
Use a NIOSH approved dust/mist respirator.
Notify the carrier’s terminal of the damage
immediately by phone and by mail.
•
Avoid contact with the skin or eyes. Wear
long-sleeved, loose-fitting clothing, gloves,
and eye protection.
•
Concealed damage must be reported within 15
days.
•
•
Wash clothes separately from other clothing;
rinse washer thoroughly.
Request an immediate, joint inspection of the
damage with the carrier and consignee.
•
Stop unpacking the unit.
•
Operations such as sawing, blowing, tearout, and spraying may generate fiber
concentrations requiring additional
respiratory protection. Use the appropriate
NIOSH approved respirator.
•
Do not remove damaged material from receiving
location.
•
Take photos of the damage, if possible.
•
The owner must provide reasonable evidence that
the damage did not occur after delivery.
First Aid Measures:
•
•
Eye Contact - Flush eyes with water to
remove dust. If symptoms persist, seek
medical attention.
Skin Contact - Wash affected areas gently
with soap and warm water after handling.
Unit Inspection
To protect against loss due to damage incurred in
transit, perform inspection immediately upon receipt of
the unit.
Exterior Inspection
If the job site inspection reveals damage or material
shortages, file a claim with the carrier immediately.
Specify the type and extent of the damage on the bill of
lading before signing. Notify the appropriate sales
representative.
RT-SVX51H-EN
Unit Storage
Take precautions to prevent condensate from forming
inside the unit’s electrical compartments and motors if:
•
The unit is stored before it is installed; or,
•
The unit is set on the roof curb, and temporary heat
is provided in the building. Isolate all side panel
service entrances and base pan openings (e.g.,
conduit holes, S/A and R/ A openings, and flue
openings) from the ambient air until the unit is
ready for start-up.
N o t e : Do not use the unit’s heater for temporary heat
without first completing the start-up.
The manufacturer will not assume any responsibility
for equipment damage resulting from condensate
accumulation on the unit’s electrical and/or mechanical
components.
7
General Information
Unit Description
Phase Monitor
Before shipment, each unit is leak tested, dehydrated,
charged with refrigerant and compressor oil, and run
tested for proper control operation.
The Phase Monitor is a three-phase line monitor
module that protects against phase loss, phase reversal
and phase unbalance. It is intended to protect
compressors from reverse rotation. It has an operating
input voltage range of 190–600 Vac, and LED indicators
for ON and FAULT. There are no field adjustments and
the module will automatically reset from a fault
condition.
Direct-drive, vertical discharge condenser fans are
provided with built-in thermal overload protection. The
stages of capacity control for these units are achieved
by starting the Economizer Control Actuator (ECA).
Economizer Control Actuator
Electromechanical Control
The ECA monitors the mixed air temperature, return air
temperature, minimum position setpoint (local or
remote), power exhaust setpoint, CO2 setpoint, CO2,
and ambient dry bulb/ enthalpy sensor or comparative
humidity (return air humidity against ambient
humidity) sensors, if selected, to control dampers to an
accuracy of ±5 percent of stroke. The actuator is spring
returned to the closed position any time that power is
lost to the unit. It is capable of delivering up to 25 in﹒lb
of torque and is powered by 24 Vac.
JADE Economizer Control - Low Leak
Economizer (LLE) Only
The JADE controller is a standalone economizer
controller that provides outdoor air dry-bulb
economizer control standard. With optional Sylk Bus
sensors, the controller can provide comparative or
reference enthalpy control. Dampers are controlled to
an accuracy of ±3.2 percent of stroke. The actuator is
spring returned to the closed position any time that
power is lost to the actuator. It is capable of delivering
up to 88 in﹒lb of torque and is powered by 24 Vac.
System Input Devices and Functions
The unit must have a thermostat input in order to
operate.
For units with Low Leak Economizer (LLE), the
thermostat must be a smart thermostat as listed by the
CEC (a list of thermostats can be found at http://www.
energy.ca.gov/title24/equipment_cert/ocst/index.html).
The descriptions of the following basic input devices
used within the unit are to acquaint the operator with
their function as they interface with the various
features. Refer to the unit’s electrical schematic for the
specific device connections. The following controls are
available from the factory for field installation.
Drain Pan Condensate Overflow Switch
(Optional)
This input incorporates the Condensate Overflow
Switch (COF) mounted on the drain pan. When the
condensate level reaches the trip point, the COF relay
energizes and opens the 24 Vac control circuit,
disabling the unit. A delay timer prevents the unit from
starting for 3 minutes.
8
Discharge Line Thermostat Control
The high pressure controls and the discharge line
thermostat signals are wired in series and connected to
the safety input of the LSD. The compressor contactor
coil is connected to the ‘CC’ terminal of the LSD. If the
high pressure control switch or the discharge line
thermostat is open, the 24 Vac signal to the SI input of
the LSD is interrupted and the compressor contactor
coil supply is disabled by the LSD. It has an automatic
lockout.
Power Exhaust Control (Optional)
The power exhaust fan is started whenever the position
of the economizer dampers meets or exceed the power
exhaust setpoint when the indoor fan is on.
The setpoint panel is located in the return air section
and is factory set at 25% (50% for LLE).
To configure the LLE controller, set EXH1 SET (or EXH1
L & EXH1 H with two-speed fan) in the SETPOINTS
menu. 2-speed fan mode requires AUX2 I set as W.
Evaporator Frost Control
This input incorporates the Frostat™ control (FOS)
mounted in the indoor coil and can be activated by
closing a field supplied contact installed in parallel with
the FOS.
If this circuit is open before the compressor is started,
the compressor will not be allowed to operate. Anytime
this circuit is opened for 5 continuous seconds during
compressor operation, the compressor for that circuit
is immediately turned “Off”. The compressor will not
be allowed to restart for a minimum of 3 minutes
should the FOS close.
Locking Safety Device with Anti-Short Cycle
Timer
This device monitors compressor safety switch trips to
prevent short cycling, protecting the compressor. A
manual reset is required after a fourth safety switch
trip.
Sensors
High Temperature Sensor (BAYFRST003*)
This sensor connects to the Emergency Stop Input on
the LTB and provides high limit “shutdown” of the unit.
The sensor is used to detect high temperatures due to
fire in the air conditioning or ventilation ducts. The
RT-SVX51H-EN
General Information
sensor is designed to mount directly to the sheet metal
duct. Each kit contains two sensors. The return air duct
sensor (X1310004001) is set to open at 135°F.
The supply air duct sensor (X1310004002) is set to open
at 240°F. The control can be reset after the temperature
has been lowered approximately 25°F below the cutout
setpoint.
Occupancy Sensor
A customer-supplied occupancy sensor can also be
added to provide damper control based on occupied/
unoccupied conditions.
Low Leak Economizer Units
To configure the JADE controller, set:
Thermostat (TCONT802AS32DA)
SYSTEM SETUP menu: OCC = INPUT
This thermostat is a multi-stage 3 heat/2 cool,
autochangeover digital display thermostat. It is a
programmable thermostat, and a 7-day programmable
stat with night setback shall be available. In addition, it
is wall mounted.
Attach the occupancy sensor to the OCC SENSOR wire
and "R" terminal (at customer connections). The
occupancy sensor must utilize a normally open contact
for proper operation.
Thermostat (TCONT402AN32DA)
This thermostat is a multi-stage 3 heat/2 cool, auto
changeover digital display thermostat. It is a
nonprogrammable, wall-mounted thermostat, and it
can be used for economizer operation.
If an occupancy sensor is not used, another option to
controlling occupied and unoccupied status is to use
the 'G' input (fan is running). Connect the G input to the
OCC SENSOR wire (at customer connections). The
controller will then operate in the occupied mode every
time the indoor fan is running.
CO2 Sensor
Initiation of Operating Modes - JADE
Controller
This optional sensor can be added for Demand Control
Ventilation (DCV) functionality. On units with a low leak
economizer, configure the JADE controller by setting
the following parameters:
The JADE controller is able to initiate the following
modes: Compressor, Economizer, Fans, Heating
System, and Cooling System.
Setpoints Menu
DCV SET = desired CO2 ppm to start DCV
VENTMAX = desired maximum position w/DCV and
occupied status (2-speed applications require LO & HI
settings)
VENTMIN = desired minimum position w/DCV and
occupied status (2-speed applications require LO & HI
settings)
ADVANCED SETUP Menu:
CO2 ZERO = set to detector's start level
CO2 SPAN = detector's max level minus start level
Attach the sensor to the CO2 and "R" terminals (at
customer connections).
The Compressor mode is initiated by either the OAT
going above the DRYBLB SET setting or by the
thermostat initiating a call to cool when the damper is
at 100% open.The Economizer mode is controlled by
the MAT getting above the MAT SET setting while the
OAT is below the DRYBLB SET setting.
While the fans are not controlled by the controller, the
Fan mode is dependent on what state the system is in
(OCC or Y1 states will cause the damper to go to a LOW
fan speed damper setting, while Y2 or W states will
cause the controller to open the damper to the HIGH
fan speed damper setting). The Heating System mode
requires an input to the AUX2-1 terminal from the
thermostat, and the Cooling System mode requires an
input to the Y2 IN and/or the Y1 IN terminals from the
thermostat.
N o t e : When using any 0-10 Vdc CO2 sensor with the
JADE you will need to set CO2 ZERO to 400 ppm
and the CO2 SPAN to 1600 ppm in the
ADVANCED SETUP menu.
RT-SVX51H-EN
9
Dimensional Data
Below figure illustrates the minimum operating and
service clearances for either a single or multiple unit
installation. These clearances are the minimum
distances necessary to assure adequate serviceability,
cataloged unit capacity, and peak operating efficiency.
Providing less than the recommended clearances may
result in condenser coil starvation, “short-circuiting” of
exhaust and economizer airflows, or recirculation of
hot condenser air.
Figure 1. Typical installation clearance for single and multiple unit applications
SIDE BY SIDE
NOTE 2
END TO END
NOTE 2, 3
6’ 0”
7’ 0”
NOTES:
1. FOR HORIZONTAL DISCHARGE UNIT,
THIS MEASUREMENT IS REDUCED TO 1’ 6”
TO MINIMIZE DUCT EXTENSION.
2. WHEN EQUIPPED WITH ECONOMIZER
OR BAROMETRIC RELIEF DAMPER,
CLEARANCE DISTANCE IS TO BE
MEASURED FROM PROTRUDING HOOD
INSTEAD OF BASE.
NOTE 1
3’ 0” WITHOUT ECONOMIZER
5’ 8” WITH ECONOMIZER
3’ 0”
SINGLE UNIT
4’ 0”
3. CLEARANCE ISTHE SAME IF ANY
UNIT IS ROTATED 180°.
5’ 0”
4. ADDITIONAL CLEARANCE REQUIRED
WHEN BAROMETRIC DAMPER OR
ECONOMIZER IS INSTALLED.
10
RT-SVX51H-EN
Dimensional Data
Figure 2. Cooling with optional electrical heat — overview (gas/electric)
CONDENSATE DRAIN
CONNECTION
REFRIGERANT GAUGE
ACCESS
GAS CONNECTION(G*C UNIT ONLY)
CUSTOMER POWER
CONDUIT CONNECTION(ALTERNATE)
GAS CONNECTION
(G*C UNIT-TBU GAS ONLY)
DISCONNECT
SWITCH ACCESS
Figure 3. Cooling with optional electrical heat — front and side views (gas/electric)
58 5/8”
59 5/16”
58 5/8”
39 13/16”
22 7/16”
4 1/2”
50 7/8”
82 1/4”
(G*C UNITS ONLY)
123 1/8”
7 15/16”
13”
NOTES:
1.THROUGH THE BASE GAS AND ELECTRICAL IS NOT STANDARD ON ALL UNITS.
2.VERIFY WEIGHT, CONNECTION, AND ALL DIMENSION WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.
RT-SVX51H-EN
11
Dimensional Data
Figure 4. Cooling with optional electrical heat units— plain view (gas/electric)
RETURN
SUPPLY
64 9/16”
71 15/16”
68 9/16”
14 15/16”
7 7/16”
6 13/16”
6 15/16”
36 1/16”
THROUGH THE BASE ELECTRICAL
82 1/4"
(THRU-THE-BASE GAS-G*C UNIT ONLY)
7 3/8”
123 1/8”
NOTES:
1.THROUGH THE BASE GAS AND ELECTRICAL IS NOT STANDARD ON ALL UNITS.
2.VERIFY WEIGHT, CONNECTION, AND ALL DIMENSION WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.
Figure 5. Cooling with optional electrical heat units — back view (horizontal configuration)
RETURN
SUPPLY
46 11/16”
25 11/16”
6”
5 1/2” 6”
26 15/16”
20 3/16”
82 1/16”
12
RT-SVX51H-EN
Dimensional Data
Figure 6. Cooling with optional electrical heat — roof crub
116 7/8”
2969 MM
1”
25 MM
1 13/16”
46 MM
1 1/2” (38 MM) PERIMETER
CURB FLANGE
1”
25 MM
22 1/4”
565 MM
23 1/4”
591 MM
1”
25 MM
28 9/16”
725 MM
7 7/6”
189 MM
69 1/2”
1765 MM
14 1/16”
357 MM
2”
51 MM
81”
2057 MM
7 1/2”
191 MM
117 3/16”
2977 MM
Figure 7. Cooling with optional electrical heat — downflow duct connections—field fabricated
1”
25 MM
19 5/16”
491 MM
73 7/16”
1865 MM
1”
25 MM
26 5/16”
668 MM
1”
25 MM
66 1/2”
1689 MM
1”
25.4 MM
CURB FLANGE
LONG SIDES
1 1/2”
38 MM
CURB FLANGE
SHORT SIDES
7 7/16”
189 MM
RE
TU
RN
14 1/16”
357 MM
LY
PP
SU
NOTES:
• DUCT FLANGES MOUNT 7-7/16” DOWN INSIDE THE CURB ON THE 1-1½” CURB FLANGES.
• ROOFCURB IS INTENDED FOR DOWNFLOW USE ONLY.
RT-SVX51H-EN
13
Dimensional Data
Figure 8. Cooling with optional electric heat — downflow unit clearance
CLEARANCE 36”
914 MM
UNIT OUTLINE
CLEARANCE 68”
1727 MM
CLEARANCE FORM
TOP OF UNIT 72” MM (1829 MM)
ROOF
OPENING
76 1/2”
1943 MM
CLEARANCE 48”
1219 MM
81”
2057 MM
CLEARANCE 60”
1524 MM
Figure 9. Cooling with optional electric heat — barometric relief and economizer
ECONOMIZER OR
MOTORIZED DAMPER HOOD
BAROMETRIC
RELIFE
FAN
BAROMETRIC
RELIFE
58
9 3/8”(5 3/8”
FOR LOW LEAK)
13 5/8”
20 3/16”
18 5/16”
(20 5/8” FOR LOW LEAK)
7 3/4”
68 3/8”
5 15/16”
123 1/8”
BACK VIEW OF UNIT
86 15/16”
ECONOMIZER
LEFT VIEW OF UNIT
NOTES:
1. VERIFY WEIGHT, CONNECTION AND ALL DIMENSION WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.
2.BAROMETRIC RELIEF IS FOR USE WITH A DOWNFLOW ECONOMIZER ONLY.
14
RT-SVX51H-EN
Dimensional Data
Figure 10.
Cooling with optional electric heat — manual damper
FAN
MANUAL DAMPER
HOOD
26 7/8”
24 7/8”
123 1/8”
BACK VIEW OF UNIT
18 1/4”
12 13/16”
86 15/16”
LEFT VIEW OF UNIT
NOTE:
VERIFY WEIGHT, CONNECTION, AND ALL DIMENSION WITH INSTALLER DOCUMENTS BEFORE INSTALLATION.
RT-SVX51H-EN
15
Weights
Table 1. Maximum unit and corner weights (lb) and center of gravity dimensions (in.)
(a)
(b)
(c)
Weights (lb)(a) , (b)
Corner Weights(c)
Center of Gravity (in.)
Tons
Unit Model
No.
Shipping
Net
A
B
C
D
Length
Width
15
GBC180
2324
2003
646
505
396
457
55
37
17.5
GBC210
2329
2009
647
506
395
460
55
37
20
GBC240
2344
2024
643
512
403
466
55
37
25
GBC300
2370
2050
668
521
391
470
55
36
Weights are approximate. Horizontal and downflow unit and corner weights may vary slightly.
Weights do not include additional factory or field installed options/accessories.
Corner weights are given for information only. 15–25 ton models must be supported continuously by a curb or equivalent frame support.
Figure 11.
WARNING
Corner weights
CENTER OF GRAVITY
LENGTH
A
Improper Unit Lift!
B
CENTER OF
GRAVITY
WIDTH
D
C
Failure to properly lift unit in a LEVEL position
could result in unit dropping and possibly
crushing operator/technician which could result in
death or serious injury, and equipment or
property-only damage.
Test lift unit approximately 24 inches (61 cm) to
verify proper center of gravity lift point. To avoid
dropping of unit, reposition lifting point if unit is
not level.
Refer to Figure 12, p. 17 and Table 1, p. 16 for typical
unit operating weights rigging before proceeding.
CENTER OF GRAVITY
Rigging
WARNING
Heavy Object!
Failure to follow instructions below could result in
unit dropping which could result in death or
serious injury, and equipment or property-only
damage.
Ensure that all the lifting equipment used is
properly rated for the weight of the unit being
lifted. Each of the cables (chains or slings), hooks,
and shackles used to lift the unit must be capable
of supporting the entire weight of the unit. Lifting
cables (chains or slings) may not be of the same
length. Adjust as necessary for even unit lift.
1. Remove the shipping crate from around the unit.
Once fork trucking is complete, and unit is ready to
place on the curb, remove all fork access brackets to
drop the shipping boards from underneath the unit
(4 brackets standard forking, 6 brackets for 3 sided
forking). Do not remove the crating from the top of
the unit.
2. Rig the unit as shown in Figure 12, p. 17. Attach
adequate strength lifting slings to all four lifting
brackets in the unit base rail. Do not use cables,
chains, or slings except as shown.
3. Install a lifting bar, as shown in Figure 12, p. 17, to
protect the unit and to facilitate a uniform lift. The
minimum distance between the lifting hook and the
top of the unit should be 7 feet.
4. Test-lift the unit to ensure it is properly rigged and
balanced, make any necessary rigging adjustments.
5. Lift the unit and position it into place.
6. Downflow units; align the base rail of the unit with
the curb rail while lowering the unit onto the curb.
Make sure that the gasket on the curb is not
damaged while positioning the unit.
16
RT-SVX51H-EN
Weights
Figure 12.
Rigging and center of gravity data
CENTER OF GRAVITY
LENGTH
RT-SVX51H-EN
CENTER OF GRAVITY
WIDTH
17
Installation
Unit Foundation
WARNING
Risk of Roof Collapsing!
Failure to ensure proper structural roof support
could cause the roof to collapse, which could
result in death or serious injury and property
damage.
Confirm with a structural engineer that the roof
structure is strong enough to support the
combined weight of the roofcurb, the unit, and any
accessories.
NOTICE
Water Damage!
Failure to follow instructions below could result in
equipment and property damage.
Non-factory penetrations through the base of this
unit are not allowed. Any penetration in the base
of the unit may affect the water tight integrity of
the unit and lead to water leaks into the
conditioned space.
NOTICE
Roof Damage!
System contains oil and refrigerant under high
pressure. Roofs should be protected from
exposure to oils and refrigerant in the system. If
rooftop is not protected, damage to the roof may
occur.
I m p o r t a n t : Refer to local building codes for proper
installation. All installation must comply
with local building codes.
Horizontal Units
Notes:
•
•
•
For complete step by step instructions on
how to install a Horizontal Conversion Kit,
please refer to ACCSVN159*- EN.
For units with optional Condensate
Overflow Switch (COF) , the switch will not
work properly if unit is not level or slightly
sloped toward switch.
To assure proper condensate flow during
operation the unit and the curb must be
level.
If the unit is installed at ground level, elevate it above
the snow line. Provide concrete footings at each
support location with a “full perimeter” support
structure or a slab foundation for support. Refer to
Table 1, p. 16 for the unit’s operating and point loading
weights when constructing a footing foundation.
18
If anchoring is required, anchor the unit to the slab
using hold down bolts or isolators. Isolators should be
installed to minimize the transmission of vibrations
into the building.
For rooftop applications, if anchoring is required,
anchor the unit to the roof with hold-down bolts or
isolators.
Check with a roofing contractor for proper
waterproofing procedures.
Ductwork
Elbows with turning vanes or splitters are
recommended to minimize air noise due to turbulence
and to reduce static pressure.
When attaching the ductwork to the unit, provide a
watertight flexible connector at the unit to prevent
operating sounds from transmitting through the
ductwork.
All outdoor ductwork between the unit and the
structure should be weather proofed after installation is
completed.
N o t e : For sound consideration, cut only the holes in the
roof deck for the ductwork penetrations. Do not
cut out the entire roof deck within the curb
perimeter.
If a Curb Accessory Kit is not used:
1. The ductwork can be attached directly to the
factory-provided flanges around the unit’s supply
and return air openings. Be sure to use flexible duct
connections at the unit.
2. For “built-up” curbs supplied by others, gaskets
must be installed around the curb perimeter flange
and the supply and return air opening flanges.
General Unit Requirements
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or
serious injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION
hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and
grounding as described in NEC and your local/
state/national electrical codes.
The checklist listed below is a summary of the steps
required to successfully install a commercial unit. This
checklist is intended to acquaint the installing
personnel with what is required in the installation
RT-SVX51H-EN
Installation
process. It does not replace the detailed instructions
called out in the applicable sections of this manual.
☐ Check the unit for shipping damage and material
shortage; file a freight claim and notify appropriate
sales representative.
☐ Verify correct model, options and voltage from
nameplate.
☐ Verify that the installation location of the unit will
provide the required clearance for proper
operation.
☐ Assemble and install the roof curb (if applicable).
Refer to the latest edition of the curb installers
guide that ships with each curb kit.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power
can not be inadvertently energized. Verify that no
power is present with a voltmeter.
1. Remove and discard the cover plate located on the
gas heat panel.
Important:
☐ Fabricate and install ductwork; secure ductwork to
curb.
•
Make sure you read the label
located on the cover plate before
you discard it.
•
Do not discard the fastening screws!
They will be needed to install the
vent hood.
☐ Rigging the unit.
☐ Set the unit onto the curb; check for levelness.
☐ Ensure unit-to-curb seal is tight and without buckles
or cracks.
☐ Install and connect a condensate drain line to the
evaporator drain connection.
Figure 13.
Discard cover plate
Factory Installed Economizer
•
Ensure the economizer has been pulled out into the
operating position. Refer to the standard or low leak
economizer Installation Instructions for proper
position and setup.
•
Install all access panels.
Controller Wiring Schematic - LLE
For additional information, go to the Installation
Instructions ACC-SVN178*-EN.
Main Electrical Power Requirements
☐ Verify that the power supply complies with the unit
nameplate specifications.
☐ Inspect all control panel components; tighten any
loose connections.
2. Locate the vent hood behind the panel, on the left
side of the burner assembly.
☐ Connect properly sized and protected power supply
wiring to a field-supplied/ installed disconnect
switch and to the main power terminal block (HTB1)
in the unit control panel.
☐ Install proper grounding wires to an earth ground.
N o t e : All field-installed wiring must comply with NEC
and applicable local codes.
External Vent Hood Installation
N o t e : This procedure applies only to medium and high
heat options, not to the low heat option.
RT-SVX51H-EN
19
Installation
Figure 14.
Vent hood shipping location
Figure 16.
TCO1 shipping locations
Low heat option
TCO1 limit location
3. Install the vent hood on the gas heat panel using
the screws removed in Step 1. Make sure it is
properly secured to the panel.
Figure 15.
Vent hood installation
Medium and high heat option
TCO1 limit location
3. Replace and discard the existing TCO1 originally
installed at the factory for down flow operation with
the TCO1 from Step 2 for horizontal operation.
4. Reinstall the heat section access panel.
Figure 17.
location
Factory installed down flow TCO1 limit
Condensate Drain Configuration
An evaporator condensate drain connection is
provided on each unit. Refer to “Dimensional Data,” p.
10 for the appropriate drain location.
N o t e : Use 1-inch PVC pipe to connect to the drain pan
outlet provided in the unit. This is a slip fit joint
(no threads). Do not use PVC glue to connect
condensate drain, thread sealing compound or
Teflon tape may be used.
TCO1 Instructions
If the unit is installed in horizontal configuration, the
factory installed limit control TCO1 must be replaced
with the TCO1 for horizontal applications shipped in
the heater compartment.
Replace TCO1 following instructions below.
1. Remove the heat section access panel.
A condensate trap must be installed at the unit due to
the drain connection being on the “negative pressure”
side of the fan.
A condensate drain line must be connected to the PTrap. Pitch the drain lines at least 0.5-inch for every 10
feet of horizontal run to assure proper condensate flow.
Do not allow the horizontal run to sag causing a
possible doubletrap condition which could result in
condensate backup due to “air lock”.
2. Remove TCO1 from shipping location - attached to
the gas manifold vertical leg - as shown below:
20
RT-SVX51H-EN
Installation
Filter Installation
Standard Wiring
Each unit ships with 2-inch filters installed. The
quantity of filters is determined by unit size. Access to
the filters is obtained by removing the filter access
panel.
The electrical service must be protected from over
current and short circuit conditions in accordance with
NEC requirements.
Refer to the unit Service Facts (shipped with each unit)
for filter requirements
Protection devices must be sized according to the
electrical data on the nameplate.
•
If the unit is not equipped with an optional factory
installed nonfused disconnect switch, a field
supplied disconnect switch must be installed at or
near the unit in accordance with the National
Electrical Code (NEC latest edition).
•
Location of the applicable electrical service
entrance is illustrated in “Dimensional Data,” p. 10.
Complete the unit’s power wiring connections onto
either; the main terminal block HTB1 inside the unit
control panel, the factory mounted nonfused
disconnect switch (UCD), or the electric heat
terminal block. Refer to the customer connection
diagram that shipped with the unit for specific
termination points.
•
Provide proper grounding for the unit in accordance
with local and national codes.
N o t e : Do not operate the unit without filters.
Field Installed MERV13 Filters
Optional MERV13 filters are available for purchase.
Replace standard filters with MERV13 Filters according
to the installation instructions provided in the kit.
Field Installed Power Wiring
An overall dimensional layout for the standard field
installed wiring entrance into the unit is illustrated in
“Dimensional Data,” p. 10. To insure the unit’s supply
power wiring is properly sized and installed, follow the
guidelines outlined below.
N o t e : All field installed wiring must conform to NEC
guidelines as well as state and Local codes.
Verify that the power supply available is compatible
with the unit’s nameplate ratings. The available supply
power must be within 10 percent of the rated voltage
stamped on the nameplate. Use only copper
conductors to connect the power supply to the unit.
Optional TBUE Wiring (Through the Base
Electrical Option)
•
Location of the applicable electrical service is
illustrated below. Refer to the customer connection
diagram that is shipped with the unit for specific
termination points. The termination points,
depending on the customer option selected would
be a factory mounted nonfused disconnect switch
(UDC).
•
Provide proper grounding for the unit in accordance
with local and national codes.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not
designed or qualified to accept other types of
conductors.
N o t e : If the unit is not equipped with an optional
factory installed nonfused disconnect switch or
circuit breaker, a field supplied disconnect switch
must be installed at or near the unit in
accordance with the National Electrical Code
(NEC latest edition).
Main Unit Power
WARNING
Figure 18.
Through the base electrical option
ELECTRO MECHANICAL
TBU FIELD WIRING.
ROUTE FIELD WIRING AS
SHOWN
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or
serious injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION
hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and
grounding as described in NEC and your local/
state/national electrical codes.
RT-SVX51H-EN
21
Installation
Control Power Transformer
The 24-volt control power transformers are to be used
only with the accessories called out in this manual.
Transformers rated greater than 50 Vac are equipped
with internal circuit breakers. If a circuit breaker trips,
turn “Off” all power to the unit before attempting to
reset it.
The transformer is located in the control panel. The
circuit breaker is located on the left side of the
transformer and can be reset by pressing in on the
black reset button.
Controls using 24 Vac
Before installing any connecting wiring, refer to
“Dimensional Data,” p. 10 for the electrical access
locations provided on the unit and Table 2, p. 22 for AC
conductor sizing guidelines.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not
designed or qualified to accept other types of
conductors.
1. Use copper conductors unless otherwise specified.
2. Ensure that the AC control wiring between the
controls and the unit’s termination point does not
exceed three (3) ohms/conductor for the length of
the run.
N o t e : Resistance in excess of 3 ohms per conductor
could cause component failure due to
insufficient AC voltage supply.
3. Be sure to check all loads and conductors for
grounds, shorts, and mis-wiring.
4. Do not run the AC low voltage wiring in the same
conduit with the high voltage power wiring.
5. Route low voltage wiring as per Figure 19, p. 23.
Table 2. Electromechanical thermostat 24V AC conductors with electromechanical unit
22
Distance from Unit to Control
Recommended Wire Size
0 - 30 feet
22 gauge
0 - 9.1 m
0.33 mm^2
31 - 50 feet
20 gauge
9.5 - 15.2 m
0.50 mm^2
51 - 75 feet
18 gauge
15.5 - 22.9 m
0.75 mm^2
76 - 125 feet
16 gauge
23.1 - 38.1 m
1.3 mm^2
126 - 200 feet
14 gauge
38.4 - 60.9 m
2.0 mm^2
RT-SVX51H-EN
Installation
Figure 19.
Conventional thermostat field wiring diagram
Requirements of Gas Heat
•
All gas piping joints properly sealed.
The unit gas train and optional through-the-base gas
shut-off valve are rated at 0.50 PSIG maximum. A
pressure reducing regulator is recommended to
prevent this maximum from being exceeded. These
components must be isolated during field gas piping
test that exceed 0.50 PSIG. It is recommended that the
field piping be capped prior to the unit gas train or
optional through-the-base gas shut-off valve if present.
•
Gas piping leak checked with a soap solution. If
piping connections to the unit are complete, do not
pressurize piping in excess of 0.50 PSIG or 14–inch
W.C. to prevent component failure.
•
Drip leg installed in the gas piping near the unit.
•
Flue Exhaust clear of any obstruction
•
Gas supply line properly sized and connected to the
unit gas train.
Gas Heat Data
Table 3. Gas heater operating data
Heating Input Rate—Btu/h
240,000
320,000
350,000
400,000
4.5/11.0
4.5/11.0
5.0/11.0
5.5/11.0
3.2-3.5
3.2-3.5
3.2-3.5
3.2-3.5
Combustion Blower Suction Pressure (1st Stage)
-0.6 to -0.8
-0.6 to -0.8
-0.6 to -0.8
-0.6 to -0.8
Combustion Blower Suction Pressure (2nd Stage)
-1 to -1.3
-1 to -1.3
-1 to -1.3
-1 to -1.3
Minimum Supply Gas Pressure Natural/LP
Manifold Gas Pressure
Minimum Flame Sensing Current(a)
Normal Sensing Current Range
Flue Gas Temperature Rise
Above Ambient
Flue Gas Content - % CO2
Minimum Supply Air Temperature Across Heat Exchanger
(a)
5.0 Micro Amps DC
8.0 to 16 Micro Amps DC
300 to 400 F
7.5 to 8.0% (Natural Gas)
8.0 to 8.5% (LP)
40° F
A voltage reading across pens (V+) and (V-) is equatable to the flame sensing current. One volt equals one micro amp.
RT-SVX51H-EN
23
Installation
Table 4. Gas heater operating data
Heating Input Rate
—Btu/h
125,000
180,000
225,000
250,000
4.5/11.0
4.5/11.0
4.5/11.0
4.5/11.0
3.5
3.9
3.6
3.5
Combustion Blower Suction Pressure (1st Stage)
-1.3 to -1.7
-1.3 to -1.7
-1.1 to -1.5
-1.1 to -1.5
Combustion Blower Suction Pressure (2nd Stage)
-1.3 to -1.7
-1.3 to -1.7
-1.1 to -1.5
-1.1 to -1.5
Minimum Supply Gas Pressure Natural/LP
Manifold Gas Pressure(a)
5.0 Micro Amps DC
Minimum Flame Sensing Current(b)
Normal Sensing Current Range
8.0 to 16 Micro Amps DC
Flue Gas Temperature Rise Above Ambient
230 to 300 F
7.0% to 8.0% (Natural Gas)
7.5% to 9.0% (Propane)
40° F
Flue Gas Content - % CO2
Minimum Supply Air Temperature Across Heat Exchanger
(a)
(b)
Staged gas heat units have a positive pressure gas valve. Never adjust the staged gas pressure valve to a negative pressure.
A voltage reading across pens (V+) and (V-) is equatable to the flame sensing current. One volt equals one micro amp.
Table 5. Piping
Length of Pipe (ft)
Iron Pipe Size (IPS) Inches
1/2" Pipe
3/4" Pipe
1" Pipe
1¼” Pipe
1½” Pipe
15
76
176
345
750
1220
30
52
120
241
535
850
45
43
99
199
435
700
60
38
86
173
380
610
75
77
155
345
545
Note: Capacity of Pipe of Different Diameters and Lengths in Cu. Ft. Per Hr. with Pressure Drop of 0.3" and Specific Gravity of 0.60.
Table 6. Specific gravity multipliers
Figure 20.
Specific Gravity
Multipliers
0.50
1.10
0.55
1.04
0.60
1.00
0.65
0.96
Schematic diagram for field gas piping to units
1/8” NPT Test Plug
Field supplied ground
Union
6” MIN
To Gas Train
Gas Supply Line
Gas shuttoff (Field Supplied
outside unit cabinet.)
Unit Access Hole
Drip Leg
24
RT-SVX51H-EN
Installation
Figure 21.
Typical unit gas train configuration
•
VD (reading farthest from average) = 221
•
The percentage of Imbalance equals:
The 2.2 percent imbalance in this example exceeds the
maximum allowable imbalance of 2.0 percent. This
much imbalance between phases can equal as much as
a 20 percent current imbalance with a resulting
increase in motor winding temperatures that will
decrease motor life.
If the voltage imbalance is over 2 percent, notify the
proper agencies to correct the voltage problem before
operating this equipment.
Electrical Phasing (Three Phase Motors)
The compressor motor(s) and the supply fan motor are
internally connected for the proper rotation when the
incoming power supply is phased as A, B, C.
Voltage Imbalance
Three phase electrical power to the unit must meet
stringent requirements for the unit to operate properly.
Measure each leg (phase-to-phase) of the power
supply.
Each reading must fall within the utilization range
stamped on the unit nameplate. If any of the readings
do not fall within the proper tolerances, notify the
power company to correct this situation before
operating the unit.
Excessive three phase voltage imbalance between
phases will cause motors to overheat and eventually
fail.
Proper electrical supply phasing can be quickly
determined and corrected before starting the unit by
using an instrument such as an Associated Research
Model 45 Phase Sequence Indicator and following the
steps below:
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power
can not be inadvertently energized. Verify that no
power is present with a voltmeter.
The maximum allowable voltage imbalance is 2
percent. Measure and record the voltage between
phases 1, 2, and 3 and calculate the amount of
imbalance as follows:
1. Turn the field supplied disconnect switch that
provides power to the main power terminal block or
to the “Line” side of the optional factory mounted
disconnect switch to the “Off” position.
% Voltage Imbalance =
2. Connect the phase sequence indicator leads to the
terminal block or to the “Line” side of the optional
factory mounted disconnect switch as follows:
AV (Average Voltage) =
•
V1, V2, V3 = Line Voltage Readings
•
VD = Line Voltage reading that deviates the farthest
from the average voltage.
•
Black (phase A) to L1
•
Red (phase B) to L2
•
Yellow (phase C) to L3
3. Close the field supplied main power disconnect
switch or circuit protector switch that provides the
supply power to the unit.
Example: If the voltage readings of the supply power
measured 221, 230, and 227, the average volts would
be:
RT-SVX51H-EN
25
Installation
WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions
when exposed to live electrical components could
result in death or serious injury.
When it is necessary to work with live electrical
components, have a qualified licensed electrician
or other individual who has been properly trained
in handling live electrical components perform
these tasks.
4. Observe the ABC and CBA phase indicator lights on
the face of the sequencer. The ABC indicator light
will glow if the phase is ABC. If the CBA indicator
light glows, open the disconnect switch or circuit
protection switch and reverse any two power wires.
5. Restore the main electrical power and recheck the
phasing. If the phasing is correct, open the
disconnect switch or circuit protection switch and
remove the phase sequence indicator.
Compressor Crankcase Heaters
NOTICE
Compressor Failure!
Failure to follow instruction below could result in
compressor failure.
Unit must be powered and crankcase heaters
energized at least 8 hours BEFORE compressors
are started.
Checklist
Use the following checklist in conjunction with the
general checklist (“General Unit Requirements,” p. 18)
to ensure that the unit is properly installed and ready
for operation.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power
can not be inadvertently energized. Verify that no
power is present with a voltmeter.
☐ Check all electrical connections for tightness and
“point of termination” accuracy.
☐ Verify that the condenser airflow is unobstructed.
☐ Verify that the condenser fan and indoor blower
turn freely without rubbing and are properly
tightened on the shafts.
☐ Check the supply fan belts for proper tension and
the fan bearings for sufficient lubrication. If the
belts require adjustment, or if the bearings need
lubricating, refer to the maintenance section of this
manual for instructions.
☐ Verify that a condensate trap is installed and the
piping is properly sized and pitched.
Each compressor can be equipped with a crankcase
heater. The proper operation of the crankcase heater is
important to maintain an elevated compressor oil
temperature during the “Off” cycle to reduce oil
foaming during compressor starts. Oil foaming occurs
when refrigerant condenses in the compressor and
mixes with the oil. In lower ambient conditions,
refrigerant migration to the compressor could increase.
☐ Verify that the correct size and number of filters are
in place.
When the compressor starts, the sudden reduction in
crankcase pressure causes the liquid refrigerant to boil
rapidly causing the oil to foam. This condition could
damage compressor bearings due to reduced
lubrication and could cause compressor mechanical
failures.
Unit Disconnect (FIYUDC)
Before starting the unit in the “Cooling” mode, set the
system switch to the “Off” position and turn the main
power disconnect to the “On” position and allow the
crankcase heater to operate a minimum of 8 hours.
Before closing the main power disconnect switch,
insure that the “System”selection switch is in the “Off”
position and the “Fan” selection switch is in the “Auto”
position.
Close the main power disconnect switch and the unit
mounted disconnect switch, if applicable.
26
☐ Inspect the interior of the unit for tools and debris
and install all panels in preparation for starting the
unit.
Factory-Mounted Unit Options
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge
capacitors before servicing could result in death or
serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper
lockout/ tagout procedures to ensure the power
cannot be inadvertently energized. Verify with a
CAT III or IV voltmeter rated per NFPA 70E that all
capacitors have discharged.
For additional information regarding the safe
discharge of capacitors, see PROD-SVB06*-EN.
RT-SVX51H-EN
Installation
WARNING
Figure 22.
Field wiring route
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or
serious injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION
hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and
grounding as described in NEC and your local/
state/national electrical codes.
I m p o r t a n t : All phases of this installation must comply
with NATIONAL, STATE, and LOCAL
CODES. In addition to local codes, the
installation must comply with National
Electric Code - ANSI/NFPA NO. 70 LATEST
REVISION.
1. Field connections are made by first removing the
compressor access panel on the front of the unit.
Unscrew the assembly around the outside of the
disconnect switch. This assembly is located in the
condenser section of the unit.
Both high and low voltage power can be routed
through the base or through the front corner post
where the disconnect enclosure is mounted. The
hole is sized for 1 1/2–in. conduit.
2. If the conduit required for your application is larger
than 1 1/2–in., remove the termination plate and
connect to the larger hole using field supplied
reducing washers.
3.
Route the power wires and ground conductor
through conduit and into the bottom of the factory
installed disconnect switch. Connect the power
conductors to the lugs provided. Connect the
ground wire to the unit ground lug.
N o t e : Wire size for the length of run should be
determined using the circuit ampacity found
on the unit nameplate and the N.E.C.
4. Route low voltage (class II), control wiring through
hole in base of unit but not through high voltage
conduit. Feed control wiring through bushing
provided on side panel. Route wires through loose
wire ties provided.
5. Tighten the wire ties. Secure the excess wire bundle
under the wire ties in the outdoor section. Do not
leave excess wire in the electrical enclosure. Use
the unit wiring diagram to make the low voltage
connections.
RT-SVX51H-EN
Through the Base Gas Utility
Option
This section contains the instructions for making field
connections to the Through the Base Gas Utility
Option.
Field Installed Connections
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge
capacitors before servicing could result in death or
serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper
lockout/ tagout procedures to ensure the power
cannot be inadvertently energized. Verify with a
CAT III or IV voltmeter rated per NFPA 70E that all
capacitors have discharged.
For additional information regarding the safe
discharge of capacitors, see PROD-SVB06*-EN.
27
Installation
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or
serious injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded
field wiring poses FIRE and ELECTROCUTION
hazards. To avoid these hazards, you MUST follow
requirements for field wiring installation and
grounding as described in NEC and your local/
state/national electrical codes.
I m p o r t a n t : All phases of this installation must comply
with NATIONAL, STATE, and LOCAL
CODES. In absence of local codes, the
installation must conform with American
National Standard-Z223.1a- National Fuel
Gas Code Latest Revision.
unit.
2. The gas piping assembly ships inside this section
and includes the shut-off valve, a pressure tap for
testing, and the necessary unions for field
connection. For through the base access, remove
the factory-provided cap from the base pan
opening. See Figure 23, p. 28.
3. Route field piping through this hole to the
dimension shown in Table 7, p. 28.
4. Place the assembly through the cabinet opening as
shown in Figure 23, p. 28 and make the union
connection to the field piping and to the gas train.
Refer to the “Heating Operation (for Gas Units) Standard Economizer,” p. 31 for startup
instructions.
Table 7. Through the base gas piping dimension
Model
Dimension
G*C180-300, G*D180-300
1 3/16–in.
1. Field connections are made by first removing the
access panel for the heat section on the front of the
Figure 23.
28
Through the base gas piping installation
RT-SVX51H-EN
Pre Start
Verifying Proper Air Flow (Units
with Belt Drive Indoor Fan)
Much of the systems performance and reliability is
closely associated with, and dependent upon having
the proper airflow supplied both to the space that is
being conditioned and across the evaporator coil.
The indoor fan speed is changed by opening or closing
the adjustable motor sheave.
Before starting the SERVICE TEST, set the minimum
position setpoint for the economizer to 0% using the
setpoint potentiometer located on the Economizer
Control (ECA), if applicable.
Electromechanical Controls –
Test Procedure
F a n T e s t a n d M i n i m u m V e n t i l a t i o n . Connect red
thermostat wire (R) to black thermostat wire (G).
E c o n o m i z e r C o o l i n g . Connect a jumper wire across
OAT on Economizer Control (ECA).
Connect red thermostat (R) wire to yellow thermostat
wire (Y1).
C o o l 1 . Connect red thermostat wire (R) to yellow
thermostat wire (Y1).
C o o l 2 . Connect red thermostat wire (R) to yellow
thermostat wire (Y2).
H e a t 1 . Connect red thermostat wire (R) to brown
thermostat wire (W1).
H e a t 2 . Connect red thermostat wire (R) to brown
thermostat wire (W2).
See unit schematic for correct wire numbers.
RT-SVX51H-EN
29
Start Up
Electromechanical Controls Sequence Of Operation
has been satisfied. When the heating cycle is
terminated, the indoor fan relay (F) coil is de-energized
with heater contactors.
These units are offered with electromechanical
controls.
When the thermostat fan selection switch is set to the
"On" position, the thermostat keeps the indoor fan
relay coil (F) energized for continuous fan motor
operation.
N o t e : The Condensate Overflow Switch (COF)
(optional) will shut the unit down if the float is
raised and the switch is closed.
Cooling without an Economizer
When the thermostat switch is set to the "Cool"
position and the zone temperature rises above the
cooling setpoint, the thermostat Y contacts close. The
compressor contactor (CC1) coil is energized provided
the low pressure control (LPC1), high pressure control
(HPC1) and discharge line thermostat (DLT 1) are
closed. When the (CC1) contacts close, compressor
(CPR1) and both outdoor fan motors (ODM1 and
ODM2) start. If the first stage of cooling cannot satisfy
the cooling requirement, the thermostat closes Y2. The
compressor contactor (CC2) coil is energized provided
the low pressure control (LPC2), high pressure control
(HPC2) and discharge line thermostat (DLT 2) are
closed.
Economizer Set-Up - Standard
Economizer
Adjusting the minimum position potentiometer located
on the unit economizer module (RTEM-EM) sets the
required amount of ventilation air.
Ambient temperature is controlling the economizing
cycle by sensing the outside air dry bulb temperature.
Table 8, p. 30 lists the selectable dry bulb values by
potentiometer setting.
Table 8. Potentiometer settings
Potentiometer
Setting
Dry Bulb
Enthalpy
A
27 Btu/lb (63 kJ/kg)
73°F (22.8°C)
B
25 Btu/lb (58 kJ/kg)
70°F (21.1°C)
C(a)
23 Btu/lb (53 kJ/kg)
67°F (19.4°C)
D
22 Btu/lb (51 kJ/kg)
63°F (17.2°C)
E
19 Btu/lb (44 kJ/kg)
55°F (12.8°C)
When the (CC2) contacts close, compressor (CPR2)
starts.
Evaporator Fan Operation (for Gas Units)
- Standard Economizer
When the thermostat fan selection switch is set to the
"Auto" position, the Ignition Module (IGN) energizes
the indoor fan relay (F) approximately 1 second after
energizing the compressor contactor coil (CC1) in the
cooling mode. In the heating mode, the Ignition
Module (IGN) energizes the indoor fan relay (F) coil
approximately 45 second after gas ignition. Closing
indoor fan relay (F) coil starts the indoor fan motor
(IDM). The (IGN) de-energizes the fan relay (F)
approximately 80 seconds after the cooling
requirement has been satisfied to enhance unit
efficiency.
When the heating cycle is terminated, the indoor fan
relay (F) coil is de-energized approximately 90 seconds
after the heating requirement.
When the thermostat fan selection switch is set to the
"On" position, the (IGN) keeps the indoor fan relay coil
(F) energized for continuous fan motor operation.
Evaporator Fan Operation (for Cooling
Only Units) - Standard Economizer
When the thermostat fan selection switch is set to the
"Auto" position, the thermostat energizes the indoor
fan relay coil (F) to start the indoor fan motor (IDM).The
fan relay (F) de-energizes after the cooling requirement
30
(a)
Factory setting
Cooling with an Economizer - Standard
Economizer
The economizer is utilized to control the zone
temperature providing the outside air conditions are
suitable. Outside air is drawn into the unit through
modulating dampers.
When cooling is required and economizing is possible,
the unit economizer module (RTEM-EM) opens the
economizer damper. The RTEM-EM continues to
modulate the economizer damper open/closed to keep
the mixed air temperature in the 50°F to 55°F range.
The thermostat will close the Y2 contacts to turn on
contactor (CC1) if mechanical cooling is required.
If economizing is not possible, the RTEM-EM drives the
damper to the minimum position setpoint when the
indoor fan relay (F) is energized and allows mechanical
cooling operation.
Heating Operation (Units with Electric
Heat) - Standard Economizer
When the system switch is set to the "Heat" position
and the zone temperature falls below the heating
RT-SVX51H-EN
Start Up
setpoint, the thermostat closesW1 contacts the first
stage electric heat contactor (AH or AH and CH) is
energized. If the first stage of electric heat cannot
satisfy the heating requirement, the thermostat closes
W2.
When the W2 contacts close, the second stage electric
heat contactor (BH or BH and DH) is energized, if
applicable. The thermostat cycles both the first and
second stages of heat "On" and "Off" as required to
maintain the zone temperature setpoint.
Heating Operation (for Gas Units) Standard Economizer
When the system switch is set to the "Heat" position
and the zone temperature falls below the heating
setpoint, the Ignition module (IGN) initiates a heat
cycle.
Ignition Module Low, Medium and High
Heat
Two-stage (IGN) runs self-check (including verification
that the gas valve is de-energized). (IGN) checks the
high-limit switches (TC01 and TC01) for normally
closed contacts, the pressure switch (PS) for normally
open contacts, and the flame rollout (FR) switch for
continuity. (IGN) energizes inducer blower on high
speed to check pressure switch closure. If the pressure
switch is closed, the inducer blower starts a 20 second
pre-purge (15 seconds on high speed followed by 5
seconds on low speed).
If the pressure switch (PS) is still open, the inducer
blower will continue to be energized on high speed
until pressure switch closure.
After pre-purge completes, the (IGN) energizes the first
stage of the gas valve, initiates spark for 2 seconds
minimum, 7 seconds maximum (ignition trial) and
detects flame and de-energizes spark. From this point,
a fixed 45 second indoor blower delay on timing starts.
After the indoor blower delay on is completed, the
(IGN) energizes the indoor blower. The (IGN) enters a
normal operating loop where all inputs are
continuously monitored. If the first stage of gas heat
cannot satisfy the heating requirement, the thermostat
closes W2. The (IGN) energizes the second stage of the
gas valve and the second stage of inducer blower.
When the zone thermostat is satisfied, the (IGN) deenergizes the gas valve. The (IGN) senses loss of flame.
The (IGN) initiates a 5 second inducer blower post
purge and 90 second indoor blower delay off at current
speed. The (IGN) de-energizes the inducer blower at
the end of the post purge. The (IGN) de-energizes the
indoor blower at the end of the selected indoor blower
delay off.
RT-SVX51H-EN
Table 9. Ignition module diagnostics
Steady light
Module is powered up, but no active call
for heat.
Blinking at
continuous steady
rate
Active call for heat.
One blink
Loss of communication.
Two blinks
System lockout (failure to ignite, no
spark, low/ no gas pressure, etc.)
Three blinks
Pressure switch (no vent air flow, bad
CBM, closed at initial call for heat). Auto
reset.
Four blinks
High limit (excessive heat in combustion
chamber, low airflow). Auto reset.
Five blinks
Flame sensed and gas valve not
energized or flame sensed and no call
for heat.
Six blinks
Flame rollout (CBM failure, incorrect gas
pressure, and incorrect primary air).
Requires manual reset of the switch.
Seven blinks
W1 and W2 swapped (electromechanical
3-10 tons units).
Drain Pan Condensate Overflow Switch
(Optional)
The Condensate Overflow Switch (COF) is utilized to
prevent water overflow from the drain pan. The float
switch is installed on the corner lip of the drain pan.
When the condensate level reaches the trip point, the
COF relay energizes and opens the 24 Vac control
circuit which disables the unit. Once the 24 Vac control
circuit is opened, a delay timer will prevent unit startup for three minutes.
Low Ambient Operation (Optional)
During low ambient operation, outside air temperature
below 50°F, the Low Ambient Controller will cycle the
outdoor fan motor "Off" and "On" based on discharge
pressure. The indoor fan motor (IDM) will continue to
operate and the outdoor fan will return to normal
operation once the ambient temperature is above 50°F.
10 Horsepower Motor Overload
10HP indoor fan motors are not internally protected.
For proper protection, ensure the adjustable dial on the
front of the overload (located in the control box) is set
to the nameplate FLA value of the indoor motor.
Two-Speed Indoor Fan Control
For units equipped with two-speed indoor fan control,
standard unit operation for cooling and heating will
continue and all unit functions will operate normally,
except for the control of the indoor fan speed. All units
configured with any type of heating will heat the supply
air and space as normal utilizing full speed indoor fan
31
Start Up
by energizing the appropriate outputs. The two-speed
indoor fan unit will only utilize two speeds during the
cooling operation modes described below.
Cooling Operation
For cooling operation, the unit will operate at Low Fan
Speed during Fan Only, Economizer Only, and the first
stage of compressor unit modes by Default. When the
unit receives a call for cooling, if the economizer is
enabled, the unit will energize the associated Low
Speed output and begin to modulate the OA Damper
open above minimum position up to 100% as
necessary. By default, the supply fan will remain at low
speed for the duration of Economizer-Only cooling. If
the supply fan is on when the first stage compressor is
energized, it will remain energized or energize at low
speed for the duration of Cool 1.
When there is a call for Cool 2, the second compressor
is energized and the Supply Fan will switch to High
Speed.
The unit will stage down compressors for cooling in
reverse order that they were staged and the supply fan
will follow the unit mode transitions. Once it is
determined through normal cooling control that the
second compressor is no longer necessary to meet
cooling demand, the second compressor will be staged
back and the supply fan will switch to Low Speed until
the unit stages all cooling off or receives a call for Cool
2 again. Once the Supply Fan is no longer requested
ON after a Cooling call is cleared, the Supply Fan will
remain energized at Low Speed for 60 seconds as on
traditional units.
If the economizer is enabled and is being utilized as the
first stage of cooling (Y1 active), if the unit receives a
Y2 request, the unit will energize the first compressor
and will switch the supply fan to high speed until the
Y2 request is cleared.
Economizer Minimum Position Handling
for 2–Speed Fan
Due to the low and high speeds of the indoor fan, when
the unit is in Fan Only, Cool 1, or Economizer Only and
the indoor fan is at low speed, the unit will not be
bringing in as much fresh air as normal. By setting a
higher minimum damper position this problem could
be solved, but that would mean more fresh air than
may be desired when the supply fan is at high speed.
To overcome these situations, the control will require
the setting of two economizer minimum positions to be
used when the fan is at low and high speed to
compensate for the lower amount of fresh air at lower
fan speeds and the potential for more fresh air than
desired at higher fan speeds. These minimum positions
will be obtained from the Bldg Design Min Position and
DCV Min Position pots on the RTEM-EM. The
economizer minimum position that will be utilized
while the supply fan is at low speed will be set with the
DCV Min Position pot with a range of 0-100% and the
32
minimum position that will be utilized while the supply
fan is at high speed will be set with the Building Design
Min Position pot with a range of 0-50%. If the Building
Design Min Position is set to be higher than the DCV
Min Position, the setpoints will be capped at the DCV
Min Position and the setpoint for the min position at
low and high fan speed will be the DCV Min Position.
Phase Monitor
The phase monitor is a 3 phase line monitor module
that protects against phase loss, phase reversal and
phase unbalance. It is intended to protect compressors
from reverse rotation. It has an operating input voltage
range of 190-600 Vac, and LED indicators for ON and
FAULT. There are no field adjustments and the module
will automatically reset from a fault condition.
Low Pressure Cutout
The low pressure cutouts are wired in series with the
high pressure cutouts and the temperature discharge
limits. If this circuit is open before a compressor is
started, the compressor in that circuit will not be
allowed to operate.
Anytime this circuit is opened, the compressor in that
circuit is turned off immediately.
High Pressure Cutout and Temperature
Discharge Limit
The high pressure controls and temperature discharge
limit are wired in series between the compressor
outputs on the LTB and the compressor contactors. If
the high pressure safety or temperature discharge limit
opens, the compressor on the affected circuit is turned
off.
Locking Safety Device with Compressor
Anti Short Cycle Timer
This device monitors compressor safety switch trips to
prevent short cycling, protecting the compressor. A
manual reset is required after a fourth safety switch
trip.
Coil Frost Protection
The Frostat™ control monitors the evaporator coil
temperature to prevent the evaporator from freezing
due to low operating temperatures whenever there is a
demand for cooling. When a open circuit has occurred,
the Frostat opens the 24 Vac ground and opens all of
the cooling contactors.
Heating Operation
Standard unit operation for heating will continue on
units equipped with a two-speed indoor fan. During
heat mode, all units configured with staged electric or
gas heat will heat the supply air and space as normal
utilizing full speed indoor fan.
RT-SVX51H-EN
Start Up
JADE Controls - Low Leak
Economizer Sequence of
Operation
Emergency Stop
This input de-energizes the 24 Vac output from the
phase monitor and can be activated by opening a field
supplied device connected to the LTB.
Table 10.
DCV
Dry bulb operation no DCV (CO2 sensor) - 1 speed fan
OA Good to
economize?
None
No
None
(a)
Yes
DCV
Occupied
Unoccupied
High
0-v/Off
0-v/Off
MIN POS
Closed
Off
High
24-v/On
0-v/Off
MIN POS
Closed
On
High
24-v/On
24-v/On
MIN POS
Closed
FAN SPD
Off
Off
On
On
Off
Off
High
0-v/Off
0-v/Off
MIN POS
Closed
On
Off
High
0-v/Off
0-v/Off
MIN POS to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
MIN POS to Full-Open
Closed to Full-Open
Dry bulb operation with DCV (CO2 sensor) - 1 speed fan
OA Good to
economize?
No
Below CO2
set
Yes
No
Above CO2
set
Yes
Y1-I
Y2-I
FAN SPD
Y1-O
Y2-O
Occupied
Unoccupied
Off
Off
High
0-v/Off
0-v/Off
VENTMIN
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN
Closed
24-v/On
24-v/On
VENTMIN
Closed
0-v/Off
0-v/Off
VENTMIN
Closed
On
On
High
Off
Off
High
On
Off
High
0-v/Off
0-v/Off
VENTMIN to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
VENTMIN to Full-Open
Closed to Full-Open
Off
Off
High
0-v/Off
0-v/Off
VENTMIN to VENTMAX
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN to VENTMAX
Closed
On
On
High
24-v/On
24-v/On
VENTMIN to VENTMAX
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN to VENTMAX
Closed
On
Off
High
0-v/Off
0-v/Off
VENTMIN to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
VENTMIN to Full-Open
Closed to Full-Open
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
Table 12.
DCV
Enthalpy operation no DCV (CO2 sensor) - 1 speed fan
OA Good to
economize?
None
None
No
Yes
Y1-O
Y2-O
Occupied
Unoccupied
High
0-v/Off
0-v/Off
MIN POS
Closed
Off
High
24-v/On
0-v/Off
MIN POS
Closed
Y1-I
Y2-I
FAN SPD
Off
Off
On
On
On
High
24-v/On
24-v/On
MIN POS
Closed
Off
Off
High
0-v/Off
0-v/Off
MIN POS
Closed
On
Off
High
0-v/Off
0-v/Off
MIN POS to Full-Open
Closed to Full-Open
On
High
24-v/On
0-v/Off(a)
MIN POS to Full-Open
Closed to Full-Open
On
(a)
Y2-O
Y2-I
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
Table 11.
(a)
Y1-O
Y1-I
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
RT-SVX51H-EN
33
Start Up
Table 13.
Enthalpy operation with DCV (CO2 sensor) - 1 speed fan
OA Good to
economize?
DCV
No
Y1-I
Y2-I
No
(a)
34
Unoccupied
VENTMIN
Closed
Off
High
0-v/Off
0-v/Off
Off
High
24-v/On
0-v/Off
VENTMIN
Closed
On
On
High
24-v/On
24-v/On
VENTMIN
Closed
Off
Off
High
0-v/Off
0-v/Off
VENTMIN
Closed
On
Off
High
0-v/Off
0-v/Off
VENTMIN to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
VENTMIN to Full-Open
Closed to Full-Open
Off
Off
High
0-v/Off
0-v/Off
VENTMIN to VENTMAX
Closed
On
Off
High
24-v/On
0-v/Off
VENTMIN L to VENTMAX
Closed
24-v/On
24-v/On
VENTMIN H to VENTMAX
Closed
0-v/Off
0-v/Off
VENTMIN L to VENTMAX
Closed
On
On
High
Off
Off
High
On
Off
High
0-v/Off
0-v/Off
VENTMIN to Full-Open
Closed to Full-Open
On
On
High
DELAY 24-v/On
0-v/Off(a)
VENTMIN to Full-Open
Closed to Full-Open
Dry bulb operation no DCV (CO2 sensor) - 2 speed fan
DCV
OA Good to
economize?
None
No
None
(b)
Occupied
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
Table 14.
(a)
Y2-O
On
Above set
Yes
Y1-O
Off
Below set
Yes
FAN SPD
Yes
Y1-O
Y2-O
Occupied
Unoccupied
Low
0-v/Off
0-v/Off
MIN POS L
Closed
Low
24-v/On
0-v/Off
MIN POS L
Closed
High
24-v/On
24-v/On
MIN POS H
Closed
0-v/Off
Y1-I
Y2-I
FAN SPD
Off
Off
On
Off
On
On
Off
Off
Low
0-v/Off
MIN POS L
Closed
On
Off
Low
0-v/Off
0-v/Off
MIN POS L to Full-Open
Closed to Full-Open
On
On
High
DELAY 24-v/On(a)
0-v/Off(b)
MIN POS H to Full-Open
Closed to Full-Open
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
RT-SVX51H-EN
Start Up
Table 15.
DCV
Dry bulb operation with DCV (CO2 sensor) - 2 speed fan
OA Good to
economize?
No
Below set
Yes
No
Above set
Yes
(a)
(b)
DCV
FAN SPD
Y1-O
Y2-O
Occupied
Unoccupied
Off
Off
Low
0-v/Off
0-v/Off
VENTMIN L
Closed
On
Off
Low
24-v/On
0-v/Off
VENTMIN L
Closed
24-v/On
24-v/On
On
On
High
VENTMIN H
Closed
Off
Off
Low
0-v/Off
0-v/Off
VENTMIN L
Closed
On
Off
Low
0-v/Off
0-v/Off
VENTMIN L to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
VENTMIN H to Full-Open
Closed to Full-Open
Off
Off
Low
0-v/Off
0-v/Off
VENTMIN L to VENTMAX
Closed
On
Off
Low
24-v/On
0-v/Off
VENTMIN L to VENTMAX
Closed
On
On
High
24-v/On
24-v/On
VENTMIN H to VENTMAX
Closed
0-v/Off
VENTMIN L to VENTMAX
Closed
0-v/Off
VENTMIN L to Full-Open
Closed to Full-Open
0-v/Off(a)
VENTMIN H to Full-Open
Closed to Full-Open
Off
Off
Low
0-v/Off
On
Off
Low
0-v/Off
On
On
High
DELAY 24-v/On
(b)
Enthalpy operation no DCV (CO2 sensor) - 2 speed fan
OA Good to
economize?
No
NO CO2
SENSOR
Yes
(b)
Y2-I
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
Table 16.
(a)
Y1-I
Y1-I
Y2-I
FAN SPD
Y1-O
Y2-O
Occupied
Unoccupied
Off
Off
Low
0-v/Off
0-v/Off
MIN POS L
Closed
On
Off
Low
24-v/On
0-v/Off
MIN POS L
Closed
On
On
High
24-v/On
24-v/On
MIN POS H
Closed
Off
Off
Low
0-v/Off
0-v/Off
MIN POS L
Closed
On
Off
Low
0-v/Off
0-v/Off
MIN POS L to Full-Open
Closed to Full-Open
On
On
High
MIN POS H to Full-Open
Closed to Full-Open
DELAY 24-v/On(a) 0-v/Off(b)
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2 -O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
RT-SVX51H-EN
35
Start Up
Table 17.
DCV
Enthalpy operation with DCV (CO2 sensor) - 2 speed fan
OA Good to
economize?
Y1-I
Y2-I
FAN SPD
Off
Off
Low
No
No
(a)
(b)
Unoccupied
0-v/Off
0-v/Off
VENTMIN L
Closed
0-v/Off
VENTMIN L
Closed
VENTMIN H
Closed
On
Off
Low
On
On
High
24-v/On
24-v/On
Off
Off
Low
0-v/Off
0-v/Off
VENTMIN L
Closed
On
Off
Low
0-v/Off
0-v/Off
VENTMIN L to Full-Open
Closed to Full-Open
On
On
High
24-v/On
0-v/Off(a)
VENTMIN H to Full-Open
Closed to Full-Open
0-v/Off
Off
Off
Low
0-v/Off
VENTMIN L to VENTMAX
Closed
On
Off
Low
24-v/On
0-v/Off
VENTMIN L to VENTMAX
Closed
On
On
High
24-v/On
24-v/On
VENTMIN H to VENTMAX
Closed
Off
Off
Low
0-v/Off
0-v/Off
VENTMIN L to VENTMAX
Closed
On
Off
Low
0-v/Off
0-v/Off
VENTMIN L to Full-Open
Closed to Full-Open
On
On
High
VENTMIN H to Full-Open
Closed to Full-Open
Above set
Yes
Occupied
24-v/On
Below set
Yes
Y2-O
Y1-O
DELAY 24-v/On(b) 0-v/Off(a)
With stage 3 delay (STG3 DLY) in Advanced setup menu can turn on 2nd stage of mechanical cooling Y2-O after the delay if the call for Y1-I and Y2-I have
not been satisfied.
With 2SP FAN DELAY (Advanced Setup Menu) when in the economizing mode there is a delay for the high speed fan to try to satisfy the call for second
stage cooling by turning on the fan to high and opening the OA damper 100% before the first stage mechanical cooling is enabled.
Economizer Set-Up
Adjusting the minimum position (MIN POS/VENTMAX
on the SETPOINTS menu) sets the required amount of
ventilation air.
Table 18.
Enth.
Curve
Ambient temperature controls the economizing cycle
by sensing the outside air dry bulb temperature. Table
18, p. 36 lists the five selectable dry bulb values (ENTH
CURVE) on the SETPOINTS menu.
Single enthalpy and dual enthalpy boundaries (parameters ES1 through ES5)
Point P1
Point P2
Temp.
Temp. dry-Bulb
Enthalpy (btu/
dewpoint (ºF)
(ºF)
lb/ da)
Temp. ºF Humid.% RH Temp. ºF Humid.% RH
ES1
80.0
60.0
28.0
80.0
36.8
66.3
80.1
ES2
75.0
57.0
26.0
75.0
39.6
63.3
80.0
ES3
70.0
54.0
24.0
70.0
42.3
59.7
81.4
ES4
65.0
51.0
22.0
65.0
44.8
55.7
84.2
ES5
60.0
48.0
20.0
60.0
46.9
51.3
88.5
HL
86.0
66.0
32.4
86.0
38.9
72.4
80.3
Note: For differential enthalpy there is a high limit boundary. The high limit boundary is ES1 when there are no stages of mechanical cooling
energized and HL when a compressor stage is energized.
N o t e : To disable the economizer to do functional
testing, use a 10 mm wrench to completely
unsecure the shaft coupling. After testing,
tighten shaft coupling securely onto damper
shaft using minimum 120 lb-in. (13.6 Nm) to
maximum 180 lb-in. (20.3 Nm) torque.
Drain Pan Condensate Overflow Switch
(Optional)
The Condensate Overflow Switch (COF) is utilized to
prevent water overflow from the drain pan. The float
switch is installed on the corner lip of the drain pan.
When the condensate level reaches the trip point, the
COF relay energizes and opens the 24 Vac control
circuit which disables the unit. Once the 24 Vac control
36
circuit is opened, a delay timer will prevent unit startup for three minutes.
Low Ambient Operation (Optional)
During low ambient operation, outside air temperature
below 50°F, the Low Ambient Controller will cycle the
outdoor fan motor "Off" and "On" based on discharge
pressure. The indoor fan motor (IDM) will continue to
operate and the outdoor fan will return to normal
operation once the ambient temperature is above 50°F.
10 Horsepower Motor Overload
10HP indoor fan motors are not internally protected.
For proper protection, ensure the adjustable dial on the
front of the overload (located in the control box) is set
to the nameplate FLA value of the indoor motor.
RT-SVX51H-EN
Start Up
Two-Speed Indoor Fan Control
Coil Frost Protection
The JADE controller does not control the supply
directly but uses the following input status to
determine the speed of the supply fan and controls the
OA damper to the required position.
The Frostat™ control monitors the evaporator coil
temperature to prevent the evaporator from freezing
due to low operating temperatures whenever there is a
demand for cooling. When a open circuit has occurred,
the Frostat opens the 24 Vac ground and opens all of
the cooling contactors.
The W (heating mode) is not controlled by the
controller but it requires the status to know where to
position the OA damper for minimum position for the
fan speed.
The 2–speed fan delay is available when FAN SPEED is
set to 2–speed on the System Setup menu.
The 2–speed fan delay is defaulted to 5 minutes and
can be changed in the Advanced Setup menu (2SP FAN
DELAY). When the unit has a call for Y1 In and in the
free cooling mode and there is a call for Y2 In, the 2speed fan delay starts and the OA damper will
modulate 100% open, the supply fan should be set to
high speed by the unit controller. After the delay one of
two actions will happen:
•
The Y2 In call will be satisfied with the damper
100% open and fan on high speed and the call will
turn off.
OR
•
If the call for additional cooling in the space has not
been satisfied then the first stage of mechanical
cooling will be enabled through Y1 Out or Y2 Out.
Phase Monitor
The phase monitor is a 3 phase line monitor module
that protects against phase loss, phase reversal and
phase unbalance. It is intended to protect compressors
from reverse rotation. It has an operating input voltage
range of 190-600 Vac, and LED indicators for ON and
FAULT. There are no field adjustments and the module
will automatically reset from a fault condition.
Low Pressure Cutout
The low pressure cutouts are wired in series with the
high pressure cutouts and the temperature discharge
limits. If this circuit is open before a compressor is
started, the compressor in that circuit will not be
allowed to operate.
Anytime this circuit is opened, the compressor in that
circuit is turned off immediately.
High Pressure Cutout and Temperature
Discharge Limit
The high pressure controls and temperature discharge
limit are wired in series between the compressor
outputs on the LTB and the compressor contactors. If
the high pressure safety or temperature discharge limit
opens, the compressor on the affected circuit is turned
off.
RT-SVX51H-EN
Initiation of Operating Modes
The JADE controller is able to initiate the following
modes: Compressor, Economizer, Fans, Heating
System, and Cooling System.
The Compressor mode is initiated by either the OAT
going above the DRYBLB SET setting or by the
thermostat initiating a call to cool when the damper is
at 100% open. The Economizer mode is controlled by
the MAT getting above the MAT SET setting while the
OAT is below the DRYBLB SET setting. While the fans
are not controlled by the controller, the Fan mode is
dependent on what state the system is in (OCC or Y1
states will cause the damper to go to a LOW fan speed
damper setting, while Y2 or W states will cause the
controller to open the damper to the HIGH fan speed
damper setting). The Heating System mode requires an
input to the AUX2-1 terminal from the thermostat, and
the Cooling System mode requires an input to the Y2
IN and/or the Y1 IN terminals from the thermostat.
Fault Detection and Diagnostics (FDD)
Certification
The JADE controller is a certified FDD product (HJW10)
by California Title 24, Part 6.
Standard Economizer Start-Up
1. Set the minimum position setpoint for the
economizer to the required percentage of minimum
ventilation using the setpoint potentiometer located
on the Economizer Control (ECA).
The economizer will drive to its minimum position
setpoint, exhaust fans (if applicable) may start at
random, and the supply fan will start when the
SERVICE TEST is initiated.
The Exhaust Fan will start anytime the economizer
damper position is equal to or greater than the
exhaust fan setpoint.
2. Verify that the dampers stroked to the minimum
position.
3. Verify that the dampers stroked to the full open
position.
4. To stop the SERVICE TEST, turn the main power
disconnect switch to the “Off” position or proceed
to the next component start-up procedure. Remove
electro mechanical test mode connections (if
applicable).
37
Start Up
LLE Controls Test Procedure
See unit schematic for correct wire numbers.
Use the CHECKOUT menu in the Installation
Instructions (ACC-SVN178*-EN) to test the damper
operation and any configured outputs. Only items that
are configured are shown in the Checkout menu.
check the internal phasing. Refer to the
following illustration for the compressor
terminal/phase identification. Do not allow the
compressor to operate backwards for more than
5 seconds. Operation for a period of time longer
than this will result in compressor damage.
1. Scroll to the desired test in the checkout menu
using the
and
buttons.
N o t e : Copeland ZP scroll compressors for
R410A units use Trane OIL00094.
Compressor types and appropriate oil
charge is listed in the following tables.
2. Press the
Table 19.
To Perform Checkout Tests:
button to select the item.
3. “RUN?” is displayed.
4. Press
to start the test.
5. The unit pauses and then displays “IN PROGRESS”.
6. When the test is complete, “DONE” appears.
7. When all parameters have been tested, press
(Menu Up) to end the test (e.g. turn off the relay).
Notes:
Tonnage
Compressor 1
Compressor 2
GBC180
CSHW082J0
CSHW073J0
GBC210
CSHW089J0
CSHW089J0
GBC240
ZP122KCE
ZP104KCE
GBC300
ZP137KCE
ZP122KCE
Table 20.
•
The checkout tests can all be performed at
the time of installation or any time during
the operation of the system.
•
JADE will be in "set up" mode for the first 60
minutes after powered. If OA sensor or Sylk
Bus device (sensor or actuator) is
disconnected during the set up mode, the
JADE will not alarm that failure. The MA
sensor is a system "critical" sensor, if the
MA sensor is removed during the set up
mode, the JADE will alarm. After 60 minutes
the JADE controller will change to operation
mode and all components removed or failed
will alarm in the operation mode.
•
Upon power up (or after a power outage or
brownout), the JADE controller module
begins a 5 minute power up delay before
enabling mechanical cooling.
Compressor Start-Up
1. Attach a set of service gauges onto the suction and
discharge gauge ports for each circuit. Refer to the
refrigerant circuit illustration in the Service Facts.
See, “Cooling Operation,” p. 32 for startup
instructions.
Scroll Compressors
a. Once each compressor has started, verify that
the rotation is correct. If wired correctly the
suction pressure should drop and the discharge
pressure should rise. If a scroll compressor is
rotating backwards, it will not pump and a loud
rattling sound can be observed.
Compressor types
POE Oil recharge amount (fl. oz.)
Tonnage
Compressor 1
Compressor 2
GBC180
61
52
GBC210
61
61
GBC240
81
81
GBC300
106
81
2. After the compressor and condenser fan have
started and operated for approximately 30 minutes,
observe the operating pressures. Compare the
operating pressures to the operating pressure curve
in the Service Facts.
3. Check system subcooling. Follow the instruction
listed on the subcooling charging curve in the
Service Facts.
4. Repeat Step 1 through Step 3 for each refrigerant
circuit.
5. To stop the SERVICE TEST, turn the main power
disconnect switch to the “Off” position or proceed
to the next component start-up procedure. Remove
electromechanical test mode connections (if
applicable).
Heating Start-Up
Using the Service Test Guide perform the proper test
mode connections.
When starting the unit for the first time or servicing the
heaters, it is a good practice to start the heater with the
main gas supply turned “Off”. Once the ignition
system and components have been checked, open the
main power disconnect switch to reset the unit.
b. If the electrical phasing is correct, before
condemning a compressor, interchange any two
leads (at the compressor Terminal block) to
38
RT-SVX51H-EN
Start Up
Final System Set Up
After completing all of the pre-start and startup
procedures outlined in the previous sections (i.e.,
operating the unit in each of its modes through all
available stages of cooling and heating), perform these
final checks before leaving the unit:
☐ Program the Night Setback (NSB) panel (if
applicable) for proper unoccupied operation. Refer
to the programming instructions for the specific
panel.
☐ Verify that the Remote panel “System” selection
switch, “Fan” selection switch, and “Zone
RT-SVX51H-EN
Temperature” settings for automatic operation are
correct.
☐ Inspect the unit for misplaced tools, hardware, and
debris.
☐ Verify that all exterior panels including the control
panel doors and condenser grilles are secured in
place.
☐ Close the main disconnect switch or circuit
protector switch that provides the supply power to
the unit’s terminal block or the unit mounted
disconnect switch.
39
Maintenance
Make sure all personnel are standing clear of the unit
before proceeding. The system components will start
when the power is applied.
Fan Belt Adjustment-Belt Drive
Units
WARNING
Rotating Components!
Failure to disconnect power before servicing could
result in rotating components cutting and slashing
technician which could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power
can not be inadvertently energized.
The fan belts must be inspected periodically to assure
proper unit operation. Replacement is necessary if the
belts appear frayed or worn. Units with dual belts
require a matched set of belts to ensure equal belt
length.
When removing or installing the new belts, do not
stretch them over the sheaves. Loosen the belts using
the belt tension adjustment bolts on the motor
mounting base.
deflection value determined in Step 1b.
3. Set the small O-ring at zero on the force scale of the
gauge plunger.
4. Place the large end of the gauge at the center of the
belt span; then depress the gauge plunger until the
large O-ring is even with the top of the next belt or
even with a straightedge placed across the fan and
motor sheaves.
5. Remove the belt tension gauge. The small O-ring
now indicates a number other than zero on the
plunger’s force scale. This number represents the
force (in pounds) required to give the needed
deflection.
6. Compare the “force” scale reading (Step 5) with the
appropriate “force” value listed in the Belt tension
table. If the “force” reading is outside the range,
readjust the belt tension.
N o t e : Actual belt deflection “force” must not
exceed the maximum “force” value shown in
the Belt tension measurement and deflection
ranges table.
7. Recheck the belt tension at least twice during the
first 2 to 3 days of operation. Belt tension may
decrease until the new belts are “run in”.
Figure 24.
Belt tension gauge
Once the new belts are installed, using a Browning or
Gates tension gauge (or equivalent), adjust the belt
tension as follows:
1. To determine the appropriate belt deflection:
a. Measure the center-to-center shaft distance (in
inches) between the fan and motor sheaves.
b. Divide the distance measured in Step 1a by 64;
the resulting value represents the amount of
belt deflection that corresponds to the proper
belt tension.
2. Set the large O-ring on the belt tension gauge at the
40
RT-SVX51H-EN
Maintenance
Table 21.
Belt tension measurement and deflection ranges (in/lb)
Deflection Force (lb)
Belts Cross
Section
A
B
Table 22.
Small P.D Range
(in)
Super Gripbelts (in)
Gripnotch (in)
Steel Cable Gripbelts
(in)
Min.
Max.
Min.
Max
Min.
Max.
3.0–3.6
3.00
4.50
3.87
5.50
3.25
4.00
3.8–4.8
3.50
5.00
4.50
6.25
3.75
4.75
5.0–7.0
4.00
5.50
5.00
6.87
4.25
5.25
3.4–4.2
4.00
5.50
5.75
8.00
4.50
5.50
4.4–5.6
5.12
7.12
6.50
9.12
5.75
7.25
5.8–8.8
6.37
8.75
7.37
10.12
7.00
8.75
Belt tension measurement and deflection ranges (mm/kg)
Deflection Force (kg)
Belts Cross
Section
A
B
Small P.D Range
(mm)
Super Gripbelts (mm)
Gripnotch (mm)
Steel Cable Gripbelts
(mm)
Min.
Max.
Min.
Max.
Min.
Max
13.3–16.0
13.3
20.0
17.2
24.5
14.5
17.8
16.9–21.4
15.6
22.2
20.0
27.8
16.7
21.1
22.0–31.1
17.8
24.5
22.2
30.6
18.9
23.4
15.1–18.7
17.8
24.5
25.6
35.6
20.0
24.5
19.6–24.9
22.8
31.7
28.9
40.6
25.6
32.3
25.8–39.1
28.4
38.9
32.8
45.0
31.1
38.9
Monthly Maintenance
Cooling Season
Before completing the following checks, turn the unit
OFF and lock the main power disconnect switch open.
☐ Check the unit’s drain pans and condensate piping
to ensure that there are no blockages.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power
can not be inadvertently energized. Verify that no
power is present with a voltmeter.
☐ Inspect the evaporator and condenser coils for dirt,
bent fins, etc. If the coils appear dirty, clean them
according to the instructions described in “Coil
Cleaning” later in this section.
☐ Manually rotate the condenser fans to ensure free
movement and check motor bearings for wear.
Verify that all of the fan mounting hardware is tight.
☐ Inspect the F/A-R/A damper hinges and pins to
ensure that all moving parts are securely mounted.
Keep the blades clean as necessary.
Filters
Inspect the return air filters. Clean or replace them if
necessary. Refer to the unit Service Facts for filter
information.
Condensate Overflow Switch
During maintenance, the switch float (black ring) must
be checked to ensure free movement up and down.
RT-SVX51H-EN
41
Maintenance
WARNING
Rotating Components!
Failure to disconnect power before servicing
could result in rotating components cutting
and slashing technician which could result in
death or serious injury.
During installation, testing, servicing and
troubleshooting of this product it may be
necessary to work with live and exposed
rotating components. Have a qualified or
licensed service individual who has been
properly trained in handling exposed rotating
components, perform these tasks.
NOTICE
Equipment Damage!
Forcibly turning the motor shaft can damage
the gear train and motor beyond repair.
Never turn the motor shaft by hand or with a
wrench.
☐ Verify that all damper linkages move freely;
lubricate with white grease, if necessary.
I m p o r t a n t : Do not release refrigerant to the
atmosphere! If adding or removing
refrigerant is required, the service
technician must comply with all federal,
state and local laws. Refer to general
service bulletin MSCU-SB-1 (latest edition).
Heating Season
☐ Inspect the unit’s air filters. If necessary, clean or
replace them.
☐ Check supply fan motor bearings; repair or replace
the motor as necessary.
☐ Inspect both the main unit control panel and heat
section control box for loose electrical components
and terminal connections, as well as damaged wire
insulation. Make any necessary repairs.
☐ Verify that the electric heat system operates
properly.
Coil Cleaning
Regular coil maintenance, including annual cleaning
enhances the unit’s operating efficiency by minimizing
the following:
☐ Check supply fan motor bearings; repair or replace
the motor as necessary.
•
Compressor head pressure and amperage draw
•
Evaporator water carryover
☐ Check the fan shaft bearings for wear. Replace the
bearings as necessary.
•
Fan brake horsepower
•
Static pressure losses
•
Airflow reduction
☐ Check the supply fan belt(s). If the belts are frayed
or worn, replace them. Refer to the “Fan Belt
Adjustment-Belt Drive Units,” p. 40 for belt
replacement and adjustments.
☐ Verify that all wire terminal connections are tight.
☐ Remove any corrosion present on the exterior
surfaces of the unit and repaint these areas.
☐ Generally inspect the unit for unusual conditions (e.
g., loose access panels, leaking piping connections,
etc.)
☐ Make sure that all retaining screws are reinstalled in
the unit access panels once these checks are
complete.
☐ With the unit running, check and record the
following:
–
ambient temperature
–
compressor oil level (each circuit)
–
compressor suction and discharge pressures
(each circuit)
–
superheat and subcooling (each circuit)
At least once each year, or more often if the unit is
located in a “dirty” environment, clean the condenser
coils using the instructions outlined below. Be sure to
follow these instructions as closely as possible to avoid
damaging the coils.
WARNING
Hazardous Chemicals!
Coil cleaning agents can be either acidic or highly
alkaline and can burn severely if contact with skin
or eyes occurs.
Handle chemical carefully and avoid contact with
skin. ALWAYS wear Personal Protective
Equipment (PPE) including goggles or face shield,
chemical resistant gloves, boots, apron or suit as
required. For personal safety refer to the cleaning
agent manufacturer’s Materials Safety Data Sheet
and follow all recommended safe handling
practices.
Record this data on an “operator’s maintenance log”
like the one shown in Sample maintenance log table in
Final Process Section. If the operating pressures
indicate a refrigerant shortage, measure the system
superheat and system subcooling. For guidelines, refer
to “Compressor Start-Up,” p. 38.
42
RT-SVX51H-EN
Maintenance
Microchannel (MCHE) Coils
NOTICE
Coil Damage!
Failure to follow instructions below could result in
coil damage.
DO NOT use any detergents with microchannel
condenser coils.
Use pressurized water or air ONLY , with pressure
no greater than 600psi.
For additional information regarding the proper
microchannel coil cleaning procedure, refer to RTSVB83*-EN
Due to the soft material and thin walls of the MCHE
coils, the traditional field maintenance method
recommended for Round Tube Plate Fin (RTPF) coils
does not apply to microchannel coils. Moreover,
Table 23.
chemical cleaners are a risk factor to MCHE due to the
material of the coil. The manufacturer does not
recommend the use of chemical cleaners to clean
microchannel coils. Using chemical cleaners could lead
to warranty claims being further evaluated for validity
and failure analysis.
The recommended cleaning method for microchannel
condenser coils is pressurized water or air with a nonpinpoint nozzle and an ECU of at least 180 with
pressure no greater than 600 psi. To minimize the risk
of coil damage, approach the cleaning of the coil with
the pressure washer aimed perpendicular to the face of
the coil during cleaning. Optimum clearance between
the sprayer nozzle and the microchannel coil is 1”–3”.
Final Process
For future reference, record the unit data below in the
blanks provided.
Unit data log
Complete Unit Model
Number
Unit Serial Number
Wiring Diagram Numbers
(from unit control panel)
-schematic(s)
-connections
Network ID
RT-SVX51H-EN
43
44
Date
Table 24.
Current
Ambient
Temp F/
C
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
- ok
- low
Compr.
Oil Level
- ok
- low
Subcool F/C
- ok
- low
Superheat F/C
- ok
- low
Liquid
Press
Psig/
kPa
- ok
- low
Disch.
Press
Psig/
kPa
- ok
- low
Suct.
Press.
Psig/
kPa
Refrigerant Circuit #1
- ok
- low
Compr.
Oil Level
Sample maintenance log
Suct.
Press.
Psig/
kPa
Disch.
Press
Psig/
kPa
Liquid
Press
Psig/
kPa
Refrigerant Circuit #2
Superheat F/C
Subcool F/C
Maintenance
RT-SVX51H-EN
Troubleshooting
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and
on the tags, stickers, and labels could result in
death or serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual
and on the tags, stickers, and labels, as well as the
following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing
devices such as capacitors before servicing.
Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently
energized. When necessary to work with live
electrical components, have a qualified licensed
electrician or other individual who has been
trained in handling live electrical components
perform these tasks.
6. If no abnormal operating conditions appear in the
test mode, exit the test mode by turning the power
“Off” at the main power disconnect switch and
removing the test mode connections.
7. Refer to the individual component test procedures if
other components are suspect.
Failures
Heating Failure
Verify Heat Failure by Ignition Module (IGN) LED
indicator:
OFF: No Power or Failure
Continued ON: No Communication
Slow Flash: Normal, Heat Call
Fast Flash: Error Code:
1 Flash: System Lockout
2 Flash: Pressure Switch Fail
3 Flash: Primary Limit Open
Standard Troubleshooting
4 Flash: Flame detected when gas valve is not open
5 Flash: Flame Rollout Open
The IGN has the ability to provide the service personnel
with some unit diagnostics and system status
information.
6 Flash: W2 signal but no W1 signal
Before turning the main power disconnect switch
“Off”, follow the steps below to check the Ignition
Module (IGN).
1. Cooling and heating set points (slide pot) on the
thermostat have failed.
To prevent injury or death from electrocution, it is the
responsibility of the technician to recognize this hazard
and use extreme care when performing service
procedures with the electrical power energized.
2. CC1 or CC2 24 Vac control circuit has opened. Check
CC1 and CC2 coils and Frostat™ status. Check the
status of the LED indicator in LSD:
1. Verify LED on face of the phase monitor is green. If
LED is red, correct supply power fault.
2. Verify that the LED on the IGN is burning
continuously. If the LED is lit, go to Step 4.
3. If the LED is not lit, verify that 24 Vac is present
between R and B. If the LED is not lit and 24 Vac is
present replace the IGN. If 24 Vac is not present,
check transformer (TNS1). Proceed to Step 4 if
necessary.
4. If no failures are indicated, use the TEST mode
procedures described in the “Unit Start-Up” section
or thermostat to start the unit. This procedure will
allow you to check all of the external controls
(relays, contactors, etc) and the IGN.
5. Test the system through all of the available modes,
and verify operation of all outputs, controls, and
modes. Refer to the sequence of operations for
each mode, to assist in verifying proper operation.
Make the necessary repairs and proceed to Step 6
and Step 7.
RT-SVX51H-EN
Cooling Failure
N o t e : Not used on electromechanical units.
a. LED will be flashing to indicate that a Safety
Input has opened while a Y call is present.
b. Compressor lockout is indicated by a solid
(nonflashing) red LED.
To reset LSD - Power cycle on ‘R’ input.
Simultaneous Heat and Cool Failure
Emergency Stop is activated.
Low Leak Economizer – (LLE)
Troubleshooting
1. The economizer controller provides alarm
messages that display on the 2-line LCD. If one or
more alarms are present and there has been no
keypad activity for at least 5 minutes, the Alarms
menu displays and cycles through the active
alarms.
N o t e : Note: You can also navigate to the Alarms
menu at any time.
2. Once the alarm has been identified and the cause
45
Troubleshooting
has been removed (for example, replaced faulty
sensor), the alarm can be cleared from the display.
•
CO2 Sensor Error
•
SYS Alarm
N o t e : If an alarm still exists after you clear it, it redisplays within 5 seconds.
•
Actuator Undervoltage
•
Actuator Overvoltage
•
Actuator Stalled
To Clear an Alarm
Once the alarm has been identified and the cause has
been removed (for example, replaced faulty sensor),
the alarm can be cleared from the display.
The FDD system shall detect the following faults:
•
Air temperature sensor failure/fault
1. Navigate to the desired alarm.
•
Not economizing when it should
•
Economizing when it should not
•
Damper not modulating
•
Excess outdoor air
2. Press
3.
“ERASE?” is displayed.
4. Press
5.
.
.
“ALARM ERASED” is displayed.
6. Press (Menu Up) to complete the action and
return to the previous menu.
N o t e : If an alarm still exists after you clear it, it redisplays within 5 seconds.
Low Leak Economizer Fault Codes
The JADE controller is a certified FDD product (HJW10)
by California Title 24, Part 6. The FDD system is
required for meeting California Energy Commission's
Title 24 regulations. Table 25, p. 46 shows the various
tests that can be performed (rows) and the five faults
that are defined by FDD (columns). The 'x' means that
the test has to be conducted to see if it is causing the
fault to occur.
Low Leak Economizer Alarms:
Table 25.
FDD troubleshooting
FAULTS
TESTS
Air temp. sensor
failure / fault
Not economizing
when it should
Economizing when
it should not
Damper not
modulating
Excess
outdoor air
x
x
x
Damper Stuck Open
Damper Stuck at
Minimum
x
Bad or Unplugged
Actuator
x
x
x
x
x
x
Sensor Hard Failure
x
Actuator Mechanically
Disconnected
Resetting Cooling and Heating
Lockouts
Cooling Failures and Heating Lockouts are reset in an
identical manner.
Method 1 section explains resetting the system from
the space; Method 2 section explains resetting the
system at the unit.
x
x
x
x
x
selection switch to the desired mode, i.e. Heat, Cool or
Auto.
Method 2
To reset the system at the unit, cycle the unit power by
turning the disconnect switch “Off” and then “On”.
Condensate Overflow Switch
N o t e : Before resetting Cooling Failures and Heating
Lockouts check the Failure Status Diagnostics by
the methods previously explained. Diagnostics
will be lost when the power to the unit is
disconnected.
When the condensate overflow switch is closed, a drain
pan overflow condition is indicated and it will shut unit
operations down.
Method 1
Verify Economizer Status by Economizer Actuator
(ECA) LED indicator:
To reset the system from the space, turn the “Mode”
selection switch at the thermostat to the “Off” position.
After approximately 30 seconds, turn the “Mode”
46
Unit Economizer Control (ECA)
•
OFF: No Power or Failure
•
ON: Normal, OK to Economize
RT-SVX51H-EN
Troubleshooting
•
Slow Flash: Normal, Not OK to Economize
•
2 Flashes: CO2 Sensor
•
Fast Flash - 1/4 Second On / 2 Seconds Off:
•
3 Flashes: RA Humidity Sensor
–
•
4 Flashes: RA Temp Sensor
•
6 Flashes: OA Humidity Sensor
•
7 Flashes: OA Temp Sensor
Error Code
•
8 Flashes: MA Temp Sensor
•
•
9 Flashes: On-board Setpoint Failure
•
Error Code: Communications Failure
Pulse Flash: 1/30 Second On / 1/4 Second Off: (2
Seconds between pulse sequences)
1 Flash: Actuator Fault
RT-SVX51H-EN
47
Wiring Diagrams
N o t e : Wiring diagrams can be accessed via e-Library
by entering the diagram number in the literature
Table 26.
Wiring diagrams
Type of
Airflow
Constant
Volume
Schematic
Type
Voltage
Diagram
Number
208-230
1213–3650
Schematic, PWR-EM-CO Gas Heat CV
460-575
1213-3651
Schematic, PWR-EM-Gas Heat CV
208-575
1213-2969
GBC180-300, GBD180-300, 60Hz, 2-Stage Gas Heat
Multi-Speed
Fans
208-230
1213-3653
Schematic, PWR-EM-Gas Heat VFD
460-575
1213-3654
Schematic, PWR-EM-Gas Heat VFD
Control
208-575
1213-2971
GBC180-300, GBD180-300, 60Hz, 2-Stage Gas Heat w/VFD
Device Location
208-575
1213-2728
GBC180-300, GBD180-300, 60Hz, CV/VFD/Gas Heat
48
Description
Power
Control
All
order number search field or by contacting
technical support.
Power
RT-SVX51H-EN
Warranty
For Commercial Unitary
Equipment Rated 25 Tons and
Under and Related Accessories
P r o d u c t s C o v e r e d — This warranty is extended by
Trane, and applies to the following products:
•
All packaged and split system air conditioners and
heat pumps have a rated capacity of 25 tons and
under.
•
All packaged combinations gas/electric air
conditioners having a rated capacity of 25 tons and
under.
•
All packaged combination gas/electric air
conditioners having a rated capacity of 1.5 through
5 tons single phase electric power and used for
commercial applications. (As used in this warranty,
a commercial application is any application where
the end purchaser uses the product for other than
personal, family or household purposes.)
•
All accessories for the above products which are
sold by Trane and applied in accordance with Trane
specifications.
Basic Warranty
The warrantor warrants for a period of twelve (12)
months from the initial start-up or eighteen (18)
months from date of shipment, whichever is sooner,
that the products covered by this warranty (1) are free
from defects in material and manufacture, and (2) have
the capacities and ratings set forth in the warrantor’s
catalogs and bulletins. If any part of your air
conditioner fails because of a manufacturing defect,
Warrantor will furnish without charge the required
replacement part.
If the heat exchanger fails because of a manufacturing
defect within five years from the date of start-up,
Warrantor will furnish without charge a replacement
heat exchanger. In addition, if the optional, factory
installed, stainless steel heat exchanger fails because
of a manufacturing defect within ten years from the
date of start-up, Warrantor will furnish without charge
a replacement heat exchanger.
Any local transportation, related service labor and
diagnosis calls are not included. In addition, if the
sealed motor-compressor fails because of a
manufacturing defect within the second through fifth
year from the date of original purchase, Warrantor will
furnish without charge the required replacement
compressor.
RT-SVX51H-EN
Exclusions and Limitations
The warrantor’s obligations and liabilities under this
warranty are limited to furnishing F.O.B. factory or
warehouse at the warrantor-designated shipping point,
freight allowed to Buyer’s city (or port of export for
shipments outside the conterminous United States) a
replacement product or, at the option of the warrantor,
parts for the repair of the product not conforming to
this warranty and which have been returned to the
warrantor.
The warrantor’s warranty is conditional on the
Customer providing written notice to the warrantor
within thirty (30) days of the discovery of the defect. No
product shall be returned to the warrantor without the
warrantor’s written permission. No liability whatever
shall attach to warrantor until said products have been
fully paid for and then said liability shall be limited to
the purchase price of the equipment shown to be
defective.
The warranty does not apply to any compressor or gasfired heat exchanger which has been repaired or
altered in such manner as, in the judgement of the
warrantor, affects its stability or reliability. This
warranty does not cover (1) any heat exchanger which
has been fired with an improper type of fuel (2) a heat
exchanger which is installed in a beauty parlor, dry
cleaning establishment, de-greasing plant or in any
corrosive atmosphere; or (3) any heat exchanger which
is not shown to be defective by the warrantor’s
inspection.
This warranty does not cover damage due to accident,
abuse, improper use, external causes, freezing,
corrosion, erosion or deterioration. Local
transportation, related service labor, air filters,
diagnosis calls, refrigerant and related items are not
covered.
THE WARRANTY AND LIABILITY SET FORTH HEREIN
ARE IN LIEU OF ALL OTHER WARRANTIES AND
LIABILITIES, WHETHER IN CONTRACT OR IN
NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW OR IN
FACT, INCLUDING IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE AND ANY IMPLIED
WARRANTIES OTHERWISE ARISING FROM THE
COURSE OF DEALING OR TRADE. IN NO EVENT
SHALL THE WARRANTOR BE LIABLE FOR ANY
INCIDENTAL OR CONSEQUENTIAL DAMAGES.
The warrantor makes certain further warranty
protection available on an optional, extra-cost basis.
Any further warranty must be in writing. If you wish
further help or information concerning this warranty,
contact: Trane — Warrantor, 2701 Wilma Rudolph
Blvd., Clarksville, TN 37040
49
Notes
50
RT-SVX51H-EN
Notes
RT-SVX51H-EN
51
Trane and American Standard create comfortable, energy efficient indoor environments for
commercial and residential applications. For more information, please visit trane. com or
americanstandardair.com.
Trane and American Standard have a policy of continuous product and product data improvement and reserve the right to change design and
specifications without notice. We are committed to using environmentally conscious print practices.
RT-SVX51H-EN
06 Nov 2020
Supersedes RT-SVX51G-EN
(April 2020)
©2020
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