Ingersoll-Rand Voyager TZ 150F Series, Service Facts, Page: 4 / 24

4 RT-SVF69C-EN
Table of Contents
General Data
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Performance Data
. . . . . . . . . . . . . . . . . . . . . . . 8
Sequence of Operation
. . . . . . . . . . . . . . . . . . 11
ReliaTel Controls
. . . . . . . . . . . . . . . . . . . . . 11
ReliaTel Control Cooling without
an Economizer . . . . . . . . . . . . . . . . . . . . . 11
ReliaTel Control Evaporator Fan
Operation . . . . . . . . . . . . . . . . . . . . . . . . . 11
Drain Pan Condensate Overflow Switch (Op-
tional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Low Ambient Operation . . . . . . . . . . . . . 12
ReliaTel Control Cooling with
an Economizer . . . . . . . . . . . . . . . . . . . . . 12
Economizer Set-Up . . . . . . . . . . . . . . . . . 12
ReliaTel Control Heating Operation for Cool-
ing Only Units . . . . . . . . . . . . . . . . . . . . . . 13
ReliaTel Control Heating Operation for Gas
Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Enhanced Dehumidification . . . . . . . . . . 13
Single Zone Variable Air Volume (Single Zone
VAV) Control
. . . . . . . . . . . . . . . . . . . . . . . . . 14
Cooling Operation . . . . . . . . . . . . . . . . . . 14
Economizer Cooling . . . . . . . . . . . . . . . . . 14
Demand Controlled Ventilation . . . . . . . . 14
Economizer Damper Position Set-Up with
DCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Economizer Damper Position Set-Up without
DCV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Heating Operation . . . . . . . . . . . . . . . . . . 15
Staged Heating Operation . . . . . . . . . . . . 15
Modulating Heat Operation with SZVAV
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Low Ambient Operation . . . . . . . . . . . . . 15
Clogged Filter Option . . . . . . . . . . . . . . . . 15
Ventilation Override . . . . . . . . . . . . . . . . . 16
Emergency Stop . . . . . . . . . . . . . . . . . . . . 16
Phase Monitor . . . . . . . . . . . . . . . . . . . . . 16
Low Pressure Control . . . . . . . . . . . . . . . . 16
High Pressure Cutout and Temperature Dis-
charge Limit . . . . . . . . . . . . . . . . . . . . . . . 16
Coil Frost Protection . . . . . . . . . . . . . . . . . 16
Failure and Override Modes . . . . . . . . . . 17
Variable Air Volume Applications (Traditional
VAV)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Supply Air Temperature Control - Occupied
Cooling and Heating . . . . . . . . . . . . . . . . .17
Supply Air Temperature Control with an
Economizer . . . . . . . . . . . . . . . . . . . . . . . . .17
VHR Relay Output . . . . . . . . . . . . . . . . . . .17
Zone Temperature Control without
a Night Setback Panel or ICS - Unoccupied
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Zone Temperature Control without
a Night Setback Panel or ICS - Unoccupied
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Morning Warm-up (MWU) Control . . . . . .18
Daytime Warm-up (DWU) Control . . . . . .18
Supply Duct Static Pressure Control . . . .18
Mechanical Cooling with an Economizer .18
Off Mode . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Heating Operation . . . . . . . . . . . . . . . . . . .19
Zone Temperature - Unoccupied Heating 19
Gas Heat Control . . . . . . . . . . . . . . . . . . . .19
Electric Heat Control . . . . . . . . . . . . . . . . .19
Pressure Curves
. . . . . . . . . . . . . . . . . . . . . . . . .20
Refrigerant Charging Procedure . . . . . . . .20
To Check Operating Pressures . . . . . . . . .20
Subcooling Charging Curves
. . . . . . . . . . . . .22
Refrigerant Circuit
. . . . . . . . . . . . . . . . . . . . . . .23