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48/50HJ004-024
50TFQ004-012, 48/50TF,TM004-014
50HJQ004-016, 48/50TJ,TM016-028
Apollo Control
Installation, Operation, and
Troubleshooting Instructions
SAFETY CONSIDERATIONS The TEMP System thermostat maintains proper tempera-
tures by controlling the amount of heated or cooled air supplied
Read these instructions entirely before modifying the base
to the area in which it is installed or the area it controls (if using
rooftop unit.
a remote room sensor).
Each thermostat is responsible for contro
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APOLLO CONTROL — The Apollo control (see Fig. 4) has WIRING TO APOLLO CONTROL THERMOSTAT CONTROL WIRING the following features: serves as interface between thermostat, Carrier rooftop unit, and any external field-supplied sensors powered by 24 vac/10 va; supplies thermostat with 10 vdc. This power is supplied by the Carrier rooftop unit. The Apollo control must be used in conjunction with a Carrier 33CSTM(T)-01 or 33CSVM(T)-XX master thermo- stat. Figure 5 shows the Apollo control factory-in
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Thermostat Installation — Begin the thermostat in- AUTO. Fan Mode — The fan will energize any time the stallation by determining where the thermostat will be located. system energizes heating or cooling. The only exception is In most cases, this will be pre-determined by the building when the thermostat controls a gas heating rooftop unit. In this plans. application, the thermostat will allow the rooftop unit to control the fan during Heating mode, and the fan will run in Cooling Locate the ther
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NOTE: Refer to Product Support Bulletin No. 93-005 for shielded wire applica- tions when wiring the thermostat to the Apollo control and for all communication bus wiring connections or contact your local representative. Fig. 6 — Thermostat and Apollo Control Wiring 4
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2. The thermostat is displaying the decimal point. TROUBLESHOOTING a. Check to see if the H2 LED is lit on the Apollo See Fig. 7-10 for Apollo factory, control, and system wiring. control. If it is not lit, replace the Apollo control. Blank Display or Blinking Display at the b. The LED is lit, but second stage is not energized. Thermostat Check the voltage across the H2 relay contact. If it reads 24 vac, replace the relay board. If it reads 0 to 1. Check to ensure there is at least 20.5 vac acro
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LEGEND COM — Communication ECONO — Economizer NC — Normally Closed Fig. 7 — Factory-Supplied Wiring to Rooftop Unit and Apollo Control *Filter status switch and humidity sensor cannot function simultaneously. Only one sensor can be wired. LEGEND Contactor IAQ — Indoor Air Quality C— NC — Normally Closed CHAS — Ground NO — Normally Open COM — Common Direct Expansion OAT — Outdoor-Air Thermostat DX — SAT — Saturated-Air Temperature ECON — Economizer Factory Wiring GND — Ground Heat Field Wiring HT
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*Filter status switch and humidity sensor cannot function simultaneously. Only one sensor can be wired. LEGEND C— Contactor IAQ — Indoor Air Quality CHAS — Ground NC — Normally Closed COM — Common NO — Normally Open DX — Direct Expansion OAT — Outdoor-Air Thermostat ECON — Economizer SAT — Saturated-Air Temperature GND — Ground Factory Wiring HT — Heat Field Wiring 1 Fig. 9 — Apollo Control Wiring Schematic — 50HJQ, 12 / and 15 Ton Units 2 7
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Copyright 2001 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book111444 PC 111 Catalog No. 534-80082 Printed in U.S.A. Form 48/50H,T-15SI Pg 8 8-01 Replaces: 48/50H,T-2SI Tab 1a1b5a5a6a6b ECONOMI$ER OPTION/ACCESSORY OAT RED 24 VAC OAT TAN BRN 24 COM COM VIO GRN GND OAH WHT BLU CLG1 +15V RED PNK RAT CLG2 COM EC CONTROLLER TRAN ACCESSORY RAH 24 VAC ONLY + 2-10VDC 20 VA +15V - SI
