Page 1 Service & Diagnostic Support Manual ReliaTel™ ™ Microprocessor Controls S S A A F F E E T T Y Y W W A A R R N N I I N N G G 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.
Page 2 ReliaTel™ controls. service procedures. In addition, some states or municipalities may have additional requirements that This publication does not cover all aspects of service.
Page 3 I I n n t t r r o o d d u u c c t t i i o o n n W W A A R R N N I I N N G G W W A A R R N N I I N N G G P P e e r r s s o o n n a a l l P P r r o o t t e e c c t t i i v v e e E E q q u u i i p p m m e e n n t t ( ( P P P P E E ) ) F F o o l l l l o o w w E E H H S S P P o o l l i i c c i i e e s s ! ! R R e e q q u u i i r r e e d d ! !
Page 4: Table Of Contents
Run ....... . . 36 ReliaTel™ ....... 10 27.5 to 50 Tons Unit Additional...
Page 5 Space Pressure Control....65 General Sequence of Evaporator Fan Discharge Air Setpoint (ReliaTel™ Operation ......48 Controlled Not User Adjustable).
Page 6 Frostat™ Input ..... . . 80 ReliaTel™ Control ..... . . 76 Test Mode Tables .
Page 7 Staged Heat ......139 ReliaTel™ ......126 Sequence of Operation.
Page 8 Discharge Air Sensing ....140 ReliaTel™ 3 to 25 Tons ....156 3 to 25 Tons Units .
Page 9 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Outdoor Air Flow Compensation for Supply Duct Static Pressure Control......166 MZVAV Units .
Page 10: General Information
ReliaTel™ ™ vs. Electromechanical the following options to the ReliaTel™ control devices will require the use of a RTAM. N N o o t t e e : : Each ReliaTel ™ module is a communicating control. ReliaTel™ ™ Air Handler Module (RTAM) Precedent™...
Page 11: Reliatel™ Ventilation Module (Rtvm) - 27.5 To 50 Tons Units
The RTOM gets power from and communicates with RTRM, provides outdoor temperature information for the RTRM. the changeover decision. Any of these optional ReliaTel™ devices require the The ECA accepts the following inputs: use of an RTOM: • Mixed air sensor (MAS) •...
Page 12: Comm3/4 Communication
LonTalk® ® Communication Interface as part of a BACnet® MS/TP communications network. General Information It allows ReliaTel™ equipment to communicate with a building automation system (BAS) by using BACnet® The communication interface board allows ReliaTel™ protocol over an RS-485 MS/TP communications link.
Page 13: Module Flow Diagram
Module Flow Diagram Figure 1. Precedent™ ™ (TSC/THC) refrigeration module (RTRM) electric heat/no heat Unit Control, Select one TS/H Refrigeration Module TD-5 4 Zone Sensor Inputs (AIP) Zone Sensor 4 Outputs Mechanical LED or indications Non Heat Pump Config (BIP) 1 Compressor Config (BIP) Thermostat G Y1 Y2 W1...
Page 14 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 2. Precedent™ ™ (YSC/YHC) refrigeration module (RTRM) gas heating Unit Control, Select one YS/H Refrigeration Module 4 Zone Sensor Inputs (AIP)
Page 15 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 3. Precedent™ ™ (WSC) refrigeration module (RTRM) heat pump Unit Control, Select one WS Refrigeration Module TD-5...
Page 16 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 4. Options module (RTOM) Refrigeration Module Options Module Economizer...
Page 17 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 5. Honeywell economizer module (ECA) Honeywell Economizer Module Power Exhaust...
Page 18 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 6. Economizer module (RTEM) ReliaTel Economizer Module DCV Mode...
Page 19 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 7. COMM 3/4 module for ICS communication/ LonTalk® ® Communication Interface (LCI/TCI), BACnet™ ™ (BCI) Refrigeration Options Module...
Page 20 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 8. Air control module (RTAM) Options RTAM Module TCI/LCI/BCI...
Page 21 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 9. ReliaTel™ ™ ventilation module (RTVM) - 3 to 25 Tons...
Page 22 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 10. ReliaTel™ ™ ventilation module (RTVM) - 27.5 to 50 Tons...
Page 23 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 11. ReliaTel™ ™ dehumidification module (RTDM) - 27.5 to 50 tons only Figure 12.
Page 24 M M o o d d u u l l e e F F l l o o w w D D i i a a g g r r a a m m Figure 13. Electromechanical logic module - RTEM-EM RT-SVD03L-EN...
Page 25: Low Voltage Terminal Strip
TEST terminals - By jumpering from TEST1 to TEST2, Figure 15. Low voltage terminal strip the service technician can test the unit or start it with or without any controls attached. See “ReliaTel™ Test Mode,” p. 79 section for details. Humidistat...
Page 26: Typical Control Box Layout
Typical Control Box Layout Figure 17. Typical control box layout (3 to 5 Tons) Ignition Module (IGN) ReliaTel Refrigeration Module (RTRM) TCI (or LCI) Communication Module Fan Relay Compressor Contactor Crankcase Heater Thermostat OD Fan Inducer Capacitor transformer (460/575 only)
Page 27 T T y y p p i i c c a a l l C C o o n n t t r r o o l l B B o o x x L L a a y y o o u u t t Figure 18. Typical control box layout (T/YSC072-102*, T/YHC048-072*, & WSC060-090*) Ignition Module (IGN) ReliaTel Refrigeration Module (RTRM) TCI (COMM3/4) or LCI Interface...
Page 28 Figure 19. Typical control box layout (T/YSC120*, T/YHC092-120*, & WSC120*) Manual Motor Indoor Fan Control Module TCI (COMM3/4) Relay (MMC) Terminal Block or LCI Interface ReliaTel Options Module (RTOM) ReliaTel Refrigeration Low Voltage Module (RTRM) Terminal Strip Zone Sensor or Thermostat...
Page 29 T T y y p p i i c c a a l l C C o o n n t t r r o o l l B B o o x x L L a a y y o o u u t t Figure 20.
Page 30 T T y y p p i i c c a a l l C C o o n n t t r r o o l l B B o o x x L L a a y y o o u u t t Figure 21.
Page 31 T T y y p p i i c c a a l l C C o o n n t t r r o o l l B B o o x x L L a a y y o o u u t t Figure 22.
Page 32: (Rtrm)
ReliaTel™ ™ Refrigeration Module (RTRM) Figure 23. ReliaTel Refrigeration Module (RTRM) - layout RS485 + RS485 - RS485 + RS485 - Common Conventional Extended Head Thermostat Common 24 VAC Transmit LED (Green) Ignition Sig Ignition Common 24 VAC W1 (YC, TC) O...
Page 33: Reliatel™ Refrigeration Module
R R e e l l i i a a T T e e l l ™ ™ R R e e f f r r i i g g e e r r a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T R R M M ) ) Figure 24. ReliaTel™ refrigeration module (RTRM) •...
Page 34: Service - Rtrm-J6-10
R R e e l l i i a a T T e e l l ™ ™ R R e e f f r r i i g g e e r r a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T R R M M ) ) RTRM J6 Table 1.
Page 35: Cooling-Rtrm-J6-8
R R e e l l i i a a T T e e l l ™ ™ R R e e f f r r i i g g e e r r a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T R R M M ) ) RTRM J6 System on LED SERVICE...
Page 36: Heat Fail And Cool Fail At The
R R e e l l i i a a T T e e l l ™ ™ R R e e f f r r i i g g e e r r a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T R R M M ) ) RTRM J6 •...
Page 37: Default Operations
The default setpoint is 71F. • The MWU initiate setpoint is nciSetpoints.occupied heat - 1.5F. Default Operations The ReliaTel™ refrigeration module (RTRM) can accept input from any of the following: • Mechanical Zone Sensor Module (ZSM) BAYSENS106-111*, AYSTAT106*-109*...
Page 38 R R e e l l i i a a T T e e l l ™ ™ R R e e f f r r i i g g e e r r a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T R R M M ) ) Table 3.
Page 39: Reliatel™ Temporary Operation
ReliaTel™ ™ Temporary Operation 3 to 25 Tons If the RTRM does not have a space temperature input (J6-1, J6-2), or have a conventional thermostat input N N o o t t e e : : Does not apply to MZVAV.
Page 40: Reliatel™ Option Module (Rtom)
ReliaTel™ ™ Option Module (RTOM) Figure 25. ReliaTel™ ™ option module (RTOM) 1 2 3 4 5 6 7 Fan output signal Modulating Gas Heat Output Discharge Air Setpoint DACR DA Cool Fan Speed RTOM Location RTOM Inputs 3 to 10 Tons J1, J2 Inputs The RTOM is installed in the indoor fan section.
Page 41: J4 Output
R R e e l l i i a a T T e e l l ™ ™ O O p p t t i i o o n n M M o o d d u u l l e e ( ( R R T T O O M M ) ) •...
Page 42: Setpoint Potentiometers
R R e e l l i i a a T T e e l l ™ ™ O O p p t t i i o o n n M M o o d d u u l l e e ( ( R R T T O O M M ) ) A A l l a a r r m m i i n n d d i i c c a a t t i i o o n n o o u u t t p p u u t t provides a 24vac output Table 7.
Page 43: Lower Limit
R R e e l l i i a a T T e e l l ™ ™ O O p p t t i i o o n n M M o o d d u u l l e e ( ( R R T T O O M M ) ) Table 7.
Page 44: Precedent
R R e e l l i i a a T T e e l l ™ ™ O O p p t t i i o o n n M M o o d d u u l l e e ( ( R R T T O O M M ) ) Precedent™...
Page 45: Reliatel™ Ventilation Module
ReliaTel™ ™ Ventilation Module (RTVM) Figure 28. ReliaTel™ ™ ventilation module (RTVM) - 3 J2 provides 24VAC power and MODBUS to 50 Tons communication downstream to the ECA. J3 Inputs J3 - 1, 2 inputs allow configuration for Statitrac™ control. If closed, the unit is configured for Statitrac™...
Page 46: Dcv Setpoints - Traq
R R e e l l i i a a T T e e l l ™ ™ V V e e n n t t i i l l a a t t i i o o n n M M o o d d u u l l e e ( ( R R T T V V M M ) ) Table 13.
Page 47: Reliatel™ Dehumidification Module
ReliaTel™ ™ Dehumidification Module (RTDM) RTDM Layout - 27.5 to 50 Tons The RTDM is installed in the control box section for Voyager™ Commercial units with modulating dehumidification. Figure 30. ReliaTel™ ™ dehumidification module (RTDM) layout J1-1 Reheat Valve Motor Control Output J2-1...
Page 48: Plus
SZVAV units work differently than multi-speed units. SZVAV units modulate the evaporator fan based on the Different products use different methods to vary the cooling demand of the space. The ReliaTel™ controller evaporator fan speed. Voyager™ units use a variable monitors the space temperature, space temperature...
Page 49 S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s •...
Page 50: Indoor Fan Control Description; Backwards Curved (Bc) Plenum Fan Control - Unit Identification
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s To change the maximum airflow, adjust the R-136 Figure 35.
Page 51: Indoor Fan Control Description; Voyager™ Multi Speed And Szvav Vfd Controlled Evaporator Fan Motor - Unit Identification
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Indoor Fan Control Description;...
Page 52: Indoor Fan Control Description; Odyssey™ Multi-Speed And Szvav Vfd Controlled Evaporator Fan Motor - Unit Identification
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Proper wiring configuration is required for correct unit Figure 43.
Page 53 N N o o t t e e : : TWE240E3R4AB is a SZVAV with an oversized with an electromechanical outdoor unit. SZVAV motor. air handlers m m u u s s t t be paired with ReliaTel ™ controlled outdoor units. Oversized motors are only factory-installed options.
Page 54: Szvav, Multi-Speed And 17 Plus Unit Outdoor Air Compensation And Economizer Minimum Position
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Figure 46.
Page 55: Condensate Drain Pan Overflow
HIGH fan speed (test step 4, compressor stage 2). economizer damper is allowed to travel between ReliaTel™ will determine an adjusted setpoint for other 0% and 100% when the fan is at LOW speed. This is fan speeds based on this setting.
Page 56: Fresh Air Measurement And Control
Sensor calibration adjustment - To make a minor 3800 3800 0.76 correction to the Traq™ airflow reading that is 3900 3900 0.78 calculated internally by the ReliaTel™ system an 4000 4000 4100 4100 0.82 adjustment pot is available on the RTVM. This pot can 4200 4200 0.84...
Page 57 S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Table 15.
Page 58: Economizer Fault Detection And Diagnostics
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Table 15.
Page 59: Mixed Air Temperature Low Limit
Economizer FDD will continue to be in effect during the Mixed Air Temperature Low Limit following cases: Diagnostic • Service Test Mode In all conditions on all ReliaTel™ controlled units, if the • Ventilation Override mixed air temperature falls below 45°F, mixed air • OFF or Stop Mode temperature low limit is active and the economizer actuator will close to the active minimum position.
Page 60 S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Demand Controlled Ventilation Operation utilizing full speed indoor fan by energizing the appropriate output(s) as described above.
Page 61: Multi-Speed Pwm Controlled Indoor Fan With Dual Capacity
At the maximum (full clockwise on required for the dual capacity compressor. For indoor the potentiometer), ReliaTel™ will output 100% of the fan control, the supply fan will follow the airflow maximum PWM signal from the RTOM indoor fan profiles as described in the following sections during speed output (J11 - 2,1) for control.
Page 62 This unit control scheme will require no changes in • DCV Min position @ Max Fan Speed PWM existing outdoor fan control logic for ReliaTel™. The Command (RTEM DCV Min Position) unit design currently only supports a single outdoor As the supply fan speed tracks between the minimum...
Page 63 SH sensor and selecting a dehumidification setpoint can be performed by using the standard service test (DhSp) on the RTOM and allowing ReliaTel™ to mode as is currently offered on ReliaTel™ controlled determine when there is a need for dehumidification.
Page 64: Single Zone Vav
Design Min at Medium Fan Speed Command (RTEM DCV Setpoint LL) SZVAV units will utilize supply fan mode selection using ReliaTel™ controls for normal zone control and • Design Min at Max Fan Speed Command (RTEM will be selectable between AUTO and ON via a...
Page 65: Space Pressure Control
DACSP value. selected exhaust enable setpoint to calculate a dynamic exhaust enable setpoint. Economizer Disabled to Enabled Discharge Air Setpoint (ReliaTel™ ™ If compressors are energized for cooling and the economizer was disabled, but becomes enabled, the Controlled Not User Adjustable) economizer and supply fan speed will be forced to 100%.
Page 66: Mode Transitions
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Table 21.
Page 67: Dehumidification Operation
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Dehumidification Operation Staged (On/Off) Dehumidification w/HGRH for Non-17 SEER SZVAV...
Page 68 S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s is satisfied and there are no other overrides in effect, the DhSp - 5%.
Page 69: Variable Speed (Vspd) Compressor
For ReliaTel™ systems, the VSPD compressor will dehumidification based on a SH value, the unit will take require two signals for proper control: requests for dehumidification from the Humidistat •...
Page 70: Multi-Zone Vav Cooling
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Table 24.
Page 71: Cooling Control
For unoccupied DX and economizer cooling control, Enhanced Dehumidification the unit will operate as a standard fixed-speed Enhanced dehumidification on ReliaTel™ SZVAV VSPD compressor unit1. During all requests for cooling compressor units will use a slower minimum indoor operation during unoccupied mode, the unit will...
Page 72: Idle Mode Operation
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Condenser Fan Control until space humidity >...
Page 73: Test Modes
S S i i n n g g l l e e Z Z o o n n e e V V A A V V , , M M u u l l t t i i - - S S p p e e e e d d a a n n d d 1 1 7 7 P P l l u u s s Table 29.
Page 74 5T & 12.5–17.5T eFlex™ ™ Units) the following table. If the OA temperature reaches temperature in excess of 100°F, ReliaTel™ controls will implement minimum Table 31. Compressor speed limit — Precedent™ ™ eFlex™ ™ 6–10 Tons Lower Upper...
Page 75 If the VSM module loses communication with the rest Compressor VFD Alarm Output Lockout of the ReliaTel™ system, the unit will disable all VSPD compressor operation and will generate a "VSM During a HPC event, there is a possibility that the Module Communication Failure"...
Page 76 “ “ O O f f f f ” ” position or proceed to the next component start-up procedure. ReliaTel™ ™ Control Fan Speed Adjustment Momentarily jump across the Test 1 & Test 2 terminals on LTB1 one time to start the minimum ventilation test.
Page 77 Off: No power or board failure – 6 flash - Flame rollout (FR) circuit open ReliaTel™ ™ Air Handling Module (RTAM) N N o o t t e e : : 6 flash not applicable to 12.5 to 50 Tons. Green system LED TCI COMM3/4 Interface (Tracer®...
Page 78 R R e e l l i i a a T T e e l l ™ ™ L L E E D D F F u u n n c c t t i i o o n n s s Green TX (Transmit) LED •...
Page 79 Service “ “ T T E E S S T T ” ” mode multiple control devices to a ReliaTel™ system. The can be initiated any time the unit is powered and an...
Page 80 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e energize the mode for at least 2 seconds, then placing condition is HEAT FAIL + COOL FAIL.
Page 81 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Test Mode Tables Table 34. Precedent™ ™ 3 to 10 tons standard efficiency heat pump CV (w/ unloading compressor) S Fan S Fan Speed...
Page 82 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 37. Precedent™ ™ 3 to 10 tons standard efficiency heat pump MZVAV (w/ unloading compressor) S Fan Speed Command...
Page 83 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 40. Precedent™ ™ 6 to 10 tons high efficiency heat pump SZVAV (w/ unloading compressor) EMAIR S Fan Speed...
Page 84 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 42. Voyager™ ™ & Precedent™ ™ gas/electric units 3 to 25 tons Step Mode Econ...
Page 85 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 44. Voyager™ ™ & Precedent™ ™ heat pump units 3 to 20 tons Step Mode Econ...
Page 86 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 46. Precedent™ ™ gas/electric — 17 SEER Test Step Comp 1 Comp 2...
Page 87 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 49. Odyssey™ ™ 10 and 20 tons condenser - 2-speed (w/ unloading compressor) SOV2 Resist- Mode...
Page 88 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 52. Test modes for Voyager™ ™ Commercial VAV units with IGV/VFD Power Reheat Test...
Page 89 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 54. CV Test modes 27.5 to 50 tons with reheat Power Reheat Test...
Page 90 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 56. Test mode states for Voyager™ ™ Commercial CV units with modulating dehumidification and staged heat Test Cool Reheat...
Page 91 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 58. Test mode states for traditional Voyager™ ™ Commercial VAV units with modulating dehumidification and modulating heat Test Heat...
Page 92 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 60. Test mode states for Voyager™ ™ Commercial SZVAV units with modulating dehumidification and modulating heat Test Heat...
Page 93 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e ReliaTel™ ™ Service Test Table 62. Single zone VAV heat pump units w/ staged and modulating auxiliary heating...
Page 94 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 64. Single zone VAV non-heat pump units w/ modulating heat types RTOM Fan RTOM Fan Speed Output...
Page 95 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 66. Precedent™ ™ 3 to 10 tons MZVAV eFlex™ ™ VSPD Test Step Supply...
Page 96 R R e e l l i i a a T T e e l l ™ ™ T T e e s s t t M M o o d d e e Table 68. Voyager™ ™ Light Commercial 12.5 to 17.5 tons MZVAV eFlex™ ™ VSPD Supply Outdoor...
Page 97 It is possible, though not recommended, to connect • Least priority - Conventional Thermostat (R, G, Y, multiple control devices to a ReliaTel™ system. The W, C) terminal strip is arranged such that simultaneous connection of ICS communication (Tracker®, Tracer®, It is possible to connect multiple devices.
Page 98 Standard with all ReliaTel™ controlled units. R R e e t t u u r r n n A A i i r r S S e e n n s s o o r r : Field or factory installed accessory.
Page 99 T T h h e e r r m m o o s s t t a a t t s s a a n n d d S S e e n n s s o o r r s s Figure 53.
Page 100 T T h h e e r r m m o o s s t t a a t t s s a a n n d d S S e e n n s s o o r r s s Figure 55.
Page 101 T T h h e e r r m m o o s s t t a a t t s s a a n n d d S S e e n n s s o o r r s s Figure 57.
Page 102 BAYSENS019C but also has improved thermistors that increases sensing accuracy and is still compatible with all equipment using either UCP or ReliaTel™ micro controls. The BAYSENS119* can be used with VAV, constant volume or heat pump equipment.
Page 103 T T h h e e r r m m o o s s t t a a t t s s a a n n d d S S e e n n s s o o r r s s Table 71. ReliaTel™ ™ and UCP wiring locations 3 to 25 ton 27.5 to 50 ton...
Page 104 T T h h e e r r m m o o s s t t a a t t s s a a n n d d S S e e n n s s o o r r s s Table 73. BAYSENS135* ReliaTel™ ™ and UCP wiring Figure 63.
Page 105 High Temperature Sensor Diagram High Temperature Sensor shut down. Immediately after sensor opens, the associated unit will completely shut down. The sensors The high temperature sensor accessory come with case and cover, and mount directly to the (BAYFRST001*) provides high limit cutout with manual ductwork.
Page 106 Operation with a Conventional Thermostat (Constant Volume) The ReliaTel™ module has conventional thermostat preference for a specific thermostat model, and in connections as well as zone sensor module others there is reluctance to adopt newer technology connections. When a conventional thermostat is that may not be as well understood as conventional controlling the unit, operation differs as follows.
Page 107 O O p p e e r r a a t t i i o o n n w w i i t t h h a a C C o o n n v v e e n n t t i i o o n n a a l l T T h h e e r r m m o o s s t t a a t t ( ( C C o o n n s s t t a a n n t t V V o o l l u u m m e e ) ) Table 76.
Page 108 O O p p e e r r a a t t i i o o n n w w i i t t h h a a C C o o n n v v e e n n t t i i o o n n a a l l T T h h e e r r m m o o s s t t a a t t ( ( C C o o n n s s t t a a n n t t V V o o l l u u m m e e ) ) Figure 66.
Page 109 Zone Sensor Module Testing Mechanical Zone Sensor Module Table 80. Temperature input (continued) Resistance (K Temperature Input Temp °F DC Volts ohms) 17.382 3.173 Terminals to Read Voltage: RTRM J6-1, J6-2 16.93 3.142 Read DC voltage with the sensor attached. If voltage 16.491 3.111 16.066...
Page 110 Z Z o o n n e e S S e e n n s s o o r r M M o o d d u u l l e e T T e e s s t t i i n n g g Figure 68.
Page 111: Testing The Programmable Zone
12 of the sensor. • Voyager™ ReliaTel™ 12.5 to 25 tons Verify a varying voltage per step 2 of • Voyager™ ReliaTel™ 27.5 to 50 tons CV No communication testing the sensor. If no voltage is with unit. • IntelliPak™ Rooftop 20 to 130 tons CV present, check with wiring to unit.
Page 112 Z Z o o n n e e S S e e n n s s o o r r M M o o d d u u l l e e T T e e s s t t i i n n g g Table 84.
Page 113: Rtrm/Rtom - Temperature Inputs
N N o o t t e e : : These are RTRM, RTOM inputs only. Economizer 148.127 4.68 inputs (MAS, RAS, OHS, RHS, CO ) are in the 143.192 4.67 ReliaTel ™ Economizer inputs section. 138.435 4.66 129.449 4.638 Read DC voltage with the sensor attached. If voltage 125.199 4.627...
Page 114 R R T T R R M M / / R R T T O O M M - - T T e e m m p p e e r r a a t t u u r r e e I I n n p p u u t t s s Table 85.
Page 115 R R T T R R M M / / R R T T O O M M - - T T e e m m p p e e r r a a t t u u r r e e I I n n p p u u t t s s Table 85.
Page 116: Zone Sensor Averaging
Zone Sensor Averaging In some applications, 1 zone sensor does not give a Figure 70. Zone sensor averaging good representation of zone temperature. The internal BAYSENS077* BAYSENS077* BAYSENS077* BAYSENS077* thermistors, 10K ohm resistance @ 25C/77F, can be wired as shown below in order to provide an average input to the mechanical or programmable Zone Sensor Module BAYSENS106*-BAYSENS111*/ASYSTAT106- 109, ASYSTAT111, BAYSENS019*/AYSTAT666*.
Page 117: Comm3/4 Interface
COMM3/4 Interface Operation & Troubleshooting • Once the unit communicates with Tracker®, the Tracker® panel will automatically recognize the Wiring unit. • Resistor missing at last unit in daisy chain The COMM3/4 board communicates with the RTRM via (depending on length of line run). the MODBUS link using the harness, labeled 4366-1151.
Page 118 C C O O M M M M 3 3 / / 4 4 I I n n t t e e r r f f a a c c e e • 27.5 to 50 tons - Fan proving circuit (RTOM 5J7-6) is will run in TEST mode for 40 seconds and then opened;...
Page 119: Direct Spark Ignition Control
Flame rollout (CBM failure, incorrect gas pressure, incorrect primary air). Requires manual reset of Six blinks the switch. (Applicable to 3 to 10 tons units only) W1& W2 swapped (electromechanical 3 to 10 tons units). ReliaTel™ module will communicate a Seven blinks heat fail diagnostic back to the RTRM.
Page 120: Only
Modulating Gas Heat Units After operating at this condition for the 60 second start- When there is a call for heat, ReliaTel™ will send a up period, the modulating heat control will be released command to the ignition module to fire and open the to normal algorithm control and the valve will begin modulating valve to 100% (10.0Vdc) while also...
Page 121 D D i i r r e e c c t t S S p p a a r r k k I I g g n n i i t t i i o o n n C C o o n n t t r r o o l l voltage and the unit Max-Fire voltage.
Page 122: Reliatel™ Hot Surface Ignition
ReliaTel™ ™ Hot Surface Ignition Control 12.5 to 50 Tons, 1 Stage, 2 Stage, Table 90. Ignition module diagnostics and Modulating Gas Heat Steady OFF No power/ Internal failure This microprocessor based, communicating solid state Steady ON Normal power-up, with no heat call.
Page 123 When the RTRM is communicating with the ignition to provide heat as required. module (IGN), the MODBUS voltage can be measured Figure 73. ReliaTel™ ™ hot surface ignition control sequence of operation Fires on If a Call for 2nd High Heat...
Page 124: Heat Pump
Heat Pump Demand Defrost Defrost Service Test When a service test defrost request is received, defrost There are two schemes in common usage for heat mode is initiated immediately. The defrost cycle will pump outdoor coil defrosting: demand defrost and remain active for a minimum of 1 minute, after which time-temperature defrost.
Page 125: Emergency Heat Operation
H H e e a a t t P P u u m m p p Emergency Heat Operation Table 91. Demand defrost fault designation (continued) When the system selection switch is in the ’EM HEAT’ Symptom Diagnostic Response Mode, and the zone temperature falls below the heating setpoint controlband, the RTRM bypasses If defrost is terminated on time requirement...
Page 126: Economizer
CCP is controlling the unit. A new stripped down version of the ECA module was implemented in April, 2005 which only contains the Figure 75. ReliaTel™ ™ economizer module layout (Honeywell) W7340A1012 Honeywell Actuator = W7399A1004...
Page 127: Reliatel™ Economizer Layout
CCP is controlling the unit. Remote Min Position input, Enthalpy Setpoint, and the wire plug for power and ModBus communications, is Figure 76. ReliaTel™ ™ economizer module layout (RTEM) Economizer Actuator Layout - Electromechanical Electromechanical economizers since August 2014 (gray) use the ReliaTel™...
Page 128: Vav Economizer Cooling
When using a conventional thermostat, or other binary minimum position and 100% to maintain the zone input, the ReliaTel™ controls will only allow two stages temperature at the economizer setpoint. of cooling. When the unit is applied with a zone sensor,...
Page 129: Barometric Relief
E E c c o o n n o o m m i i z z e e r r Barometric Relief Economizer-based cooling is enabled only when outdoor air is determined to have more cooling Units with economizers bring in outside air for capacity than the return air.
Page 130: Economizer Damper Enthalpy
E E c c o o n n o o m m i i z z e e r r depending on model, or the right side beneath the Figure 79. Economizer - sensors location control panel on Voyager™ Light Commercial, or the economizer end of unit for Voyager™...
Page 131: Reliatel™ Economizer Operation
(reference dry bulb point + 5.0ºF), the economizer P= partial pressure of water at T, psia enable/disable status is not changed. P= (0.421 - 0.01503 * T + 0.000202 * T**2) * RH ReliaTel™ ™ Economizer Operation & Inputs ReliaTel™ ™ Economizer Inputs Terminals to read voltage:...
Page 132 N N o o t t e e : : These are economizer inputs only. RTRM, RTOM Table 94. W7340A1004 used before August 1st, 2005 (continued) inputs (zone temp, setpoints, OAS, DAS) are in the ReliaTel ™ temperature inputs section. Resistance (K Temp °F DC Volts...
Page 133 1.383 15.654 3.05 3.743 1.362 15.253 3.019 14.864 2.988 ReliaTel™ ™ Economizer Control Actuator 14.486 2.957 (LED Fault Code Info.) 14.119 2.926 13.762 2.895 N N o o t t e e : : Actuator fault Honeywell (Obsolete - Not 13.416...
Page 134: Electromechanical Economizer
E E c c o o n n o o m m i i z z e e r r The mixed air sensor (MAS) and outdoor air sensor Figure 84. Economizer actuator (ECA) connected to the unit (OAS) input from the RTRM are minimum required sensors.
Page 135: Position Damper
E E c c o o n n o o m m i i z z e e r r Table 96. Temperature input (continued) position potentiometer to 100% and installing a set of contacts in series with the existing 130 ohm resistor to Temp F Temp C R(K OHMS)
Page 136: Electromechanical Units
Electromechanical Units Time Delay Relay for 80 seconds, then open. This in turn de-energizes the F relay, which stops the indoor fan. This time delay circuit board attaches to the side of the Figure 87. Transformer and thermostat layout relay. When energized, the fan starts immediately and when de-energized shuts off 80 seconds later.
Page 137: Reliatel™ - Humidity Sensors
ReliaTel™ ™ - Humidity Sensors Outdoor Humidity Sensor Table 97. Module voltage compared to return humidity Field installed accessory, located below and to the left DCma of economizer actuator motor. Used in reference 100% (BAYENTH005*) and comparative (BAYENTH006*) 97.7 19.636 enthalpy control.
Page 138: Eca Module Voltages
R R e e l l i i a a T T e e l l ™ ™ - - H H u u m m i i d d i i t t y y S S e e n n s s o o r r s s Table 97.
Page 139: Reliatel™ - Supply Air Tempering
ReliaTel™ ™ - Supply Air Tempering Control Sequence of Operation Supply air tempering maintains the supply air temperature above a lower limit during minimum Constant Volume Units with Staged ventilation periods when in heat mode on a CV unit and during inactive cool mode on a VAV unit.
Page 140: Tci Comm 3/4
TCI Comm 3/4 Discharge Air Sensing still function as the mixed air sensor for the economizer operation. The discharge air sensor option is the Units connected to ICS systems have the ability to look recommended method because it uses an averaging at discharge air temperature.
Page 141: Reliatel™ Ventilation Override
ReliaTel™ ™ Ventilation Override Three Ventilation modes are available with ReliaTel™ N N o o t t e e : : Although not associated with ventilation through use of an Options Module (RTOM) and override, Humidistat connections for economizer (ECA) with Power Exhaust. Following is a dehumidification are also provided on this list of each mode and what happens during each.
Page 142: Demand Control Ventilation (Dcv)
4-20 mA analog outputs. For use with the compromise this 100 ppm differential, the upper limit ReliaTel™ economizer, the sensor must be set for 0-10 setpoint will not be "pushed-" and the 100 ppm vdc. As the CO level increases, the voltage output differential will be enforced.
Page 143: Rtem W/ Rtrm V7.0 And Earlier
OA damper position is modulated I I m m p p o o r r t t a a n n t t : : While the ReliaTel ™ will allow active DCV proportionally between the DCV min and the design control when the fan mode is set to AUTO min position setpoints.
Page 144: Failure And Override
N N o o t t e e : : When using CO -based demand controlled economizer cooling, the outdoor air damper may be ventilation with the ReliaTel ™ controller, the opened further to satisfy the cooling request. minimum OA damper position should be set to...
Page 145: Initial Set Up
In addition to the RTEM (ReliaTel™ economizer The DCV set up procedure should be done in test module) a circuit board called the RTVM (ReliaTel™ mode. ventilation module) is required for DCV operation on •...
Page 146: Set Up The Low Fan Speed Damper
D D e e m m a a n n d d C C o o n n t t r r o o l l V V e e n n t t i i l l a a t t i i o o n n ( ( D D C C V V ) ) Set Up the LOW Fan Speed Damper •...
Page 147: Dehumidification
Dehumidification Hot Gas Reheat 3 to 25 Tons or thermostat while in the dehumidification mode, no action takes place. Factory installed hot gas reheat allows application of If there is a call for heating or 2nd stage cooling, the dehumidification. Initiation of reheat is performed by reheat valve is de-energized, and the unit reverts to the an input to the RTOM module from either a relative cooling or heating mode.
Page 148: Modulating Dehumidification With Hot
D D e e h h u u m m i i d d i i f f i i c c a a t t i i o o n n Verification of the RH setpoint can be determined by •...
Page 149 D D e e h h u u m m i i d d i i f f i i c c a a t t i i o o n n • If the temp is below 35º F for 10 more continuous •...
Page 150: Heating/Cooling Changeover
Heating/Cooling Changeover The change over from heating to cooling is the unit is in the heating mode, and the zone accomplished in two different ways. The first drawing temperature is rising, the unit will change to the below illustrates change over in a system without an cooling mode when the zone temperature is greater economizer, and the second drawing illustrates change than the greater of the economizer setpoint or the...
Page 151: Operation (3 To 25 Ton Units)
Low Ambient Mechanical Cooling Operation (3 to 25 Ton Units) Evaporator Defrost Control Low ambient operation is defined as 55º F for single compressor units, and 40º F for dual compressor units. (EDC) Function Dual condenser fan units provide condenser cycling. The Evaporator Defrost Control (EDC) function N N o o t t e e : : If the outside air sensor fails, the EDC logic is provides low ambient cooling, standard, down to 0º...
Page 152: Reliatel™ - Condenser Fan
ReliaTel™ ™ - Condenser Fan Control Logic - 12.5 to 25 Tons condenser fans. The condenser fan speed is determined by the variable speed compressor speed For units that have two condenser fans, special control and the outdoor air temperature.
Page 153 R R e e l l i i a a T T e e l l ™ ™ - - C C o o n n d d e e n n s s e e r r F F a a n n Table 102.
Page 154 R R e e l l i i a a T T e e l l ™ ™ - - C C o o n n d d e e n n s s e e r r F F a a n n Table 103.
Page 155: Independent Circuit Heat Pump
R R e e l l i i a a T T e e l l ™ ™ - - C C o o n n d d e e n n s s e e r r F F a a n n Independent Circuit Heat Pump - compressor circuit 1 is energized.
Page 156: Phase Monitor
Phase Monitor ReliaTel™ ™ 3 to 25 Tons Figure 99. Phase monitor wiring diagram Notes: W38 (RED) Phase monitors are installed on all 3 to 25 ton products 1. Dashed wiring & devices with three-phase power. The main purpose of the 136A (RED) provided by others.
Page 157: Circuits
If the outdoor temperature is less than 40ºF the LPC bypass delay will be set to 60 seconds. When the ReliaTel™ controls utilize relays to energize alternating current (AC) loads. Because of the characteristics of AC outdoor temperature is between 40 to 49.9°F the delay will be set to 30 seconds.
Page 158: Hpc Logic
C C i i r r c c u u i i t t s s • If active on a single circuit dual compressor unit, circuit units, if the unit is in active cool mode, the compressor 1 and compressor 2 will de-energize non-reheat circuit will remain energized if the after the appropriate delays during active cooling reheat LPC goes active.
Page 159 C C i i r r c c u u i i t t s s If the HPC opens and closes four times during an active If any time during the counter routine, the call for call for cooling, the unit will be shut down and locked cooling goes away, the counter will reset and the logic out, and will require a manual reset.
Page 160: Transformer Troubleshooting
Transformer Troubleshooting The graph shows how as current caused by loads on Figure 102. Transformer troubleshooting the transformer increases, voltage decreases. Once the voltage drops below the level that the contractor can pull in, usually about 16-18 volts, the current raises up to the point where the transformer burns out.
Page 161: Novar Controls
Novar is a control system that is often interfaced with mixed air sensor may drop below the mixed air ReliaTel™ controls which allows others to take control setpoint causing the ECA to close the outdoor air of our equipment. The Novar system includes, but is damper to minimum position.
Page 162: [Gas/Electric] Heating
ON mode. ECA as default. The status lights on the main ReliaTel™ control modules will be on steady if the boards are [Gas/Electric] Heating powered up and properly communicating on the inter-module bus.
Page 163 RTRM thermostat-W1 input. Verify proper Keep in mind that the outdoor air damper will close ReliaTel™ module heater connections and function to minimum position when the discharge air cools using the ReliaTel™ installation guide.
Page 164: Constant Volume (Cv) And Variable Air
VAV with ReliaTel™ ™ versus VAV with • Ventilation override (LTB4) • Frostat™ input ReliaTel™ units do everything UCP units did and more. • Clogged filter switch (optional) Here are some differences between UCP and ReliaTel™ • Discharge air sensor (optional on CV, standard on...
Page 165: (Optional)
Summit (COMM4) or CCP (COMM4). SA Tempering (CV Units Only) RTOMJ3-1,J3-2 N N o o t t e e : : ReliaTel ™ TCI does support communication Open Enabled from earlier versions of Tracker ® , Tracer ® 100 or ComforTrac ™...
Page 166: Supply Duct Static Pressure
C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) Table 104.
Page 167: Vhr Relay
C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) Figure 104.
Page 168: Baysens021* Setpoint Input
C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) applications with extreme winds could require Table 105.
Page 169 C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) Unoccupied Heating: N N o o t t e e : : Remote SA cooling setpoint can be installed on RTAM J7-3, 4 (as shown) or on RTRM J6-2, 3.
Page 170 C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) Table 106.
Page 171 C C o o n n s s t t a a n n t t V V o o l l u u m m e e ( ( C C V V ) ) a a n n d d V V a a r r i i a a b b l l e e A A i i r r V V o o l l u u m m e e ( ( V V A A V V ) ) Table 106.
Page 172: Outdoor Air Flow Compensation For Mzvav Units
Outdoor Air Flow Compensation for MZVAV Units 3 to 50 Tons Figure 107. Outdoor airflow compensation When a VAV unit is modulating supply airflow, the pressure drop across the outdoor air damper changes. This usually means that the quantity of outside air will drop as the IGV closes or the VFD slows down.
Page 173 O O u u t t d d o o o o r r A A i i r r F F l l o o w w C C o o m m p p e e n n s s a a t t i i o o n n f f o o r r M M Z Z V V A A V V U U n n i i t t s s The active economizer minimum position will be computed as a linear function, based on reported inlet vane or VFD position, given the two endpoints:...
Page 174 N N o o t t e e s s RT-SVD03L-EN...
Page 175 N N o o t t e e s s RT-SVD03L-EN...
Page 176 Ingersoll Rand (NYSE: IR) advances the quality of life by creating comfortable, sustainable and efficient environments. Our people and our family of brands — including Club Car ® , Ingersoll Rand ® , Thermo King ® Trane ® — work together to enhance the quality and comfort of air in homes and buildings; transport and protect food and perishables;...

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