Manual do usuário Carrier 30GT015-035

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38AKS014-024
30GT015-035
Accessory Hot Gas Bypass
50/60 Hz
Installation Instructions
Part No. 30GT911054
GENERAL Follow all safety codes. Wear safety glasses and work
gloves. Use care in handling equipment.
These installation instructions cover field installation of the
accessory hot gas bypass valve, pilot valve, and hot gas sole-
noid. For 30GT units, these instructions are intended for units
with a starting serial number of 2294F--- or higher. The hot gas
Be sure power to equipment is shut of

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LEGEND TXV — Thermostatic Expansion Valve Factory Piping Field Piping 5 NOTE: The bypass valve in this package has / in. 8 connections and can be used directly on 30GT015- 035 units. Fig. 1 — 30GT Piping Schematic 1 Install the field-supplied / in. OD tubing from the SAE 4 connection to the TXV equalizer line. If the connection is made directly to the TXV, use the field-supplied, 3-way tee with an internal branch (install horizontally in the line with the internal branch attaching directly to th

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1 1 2. Install a field-supplied / in. NPT to / in. flare fitting on INSTALLATION IN 38AKS014-024/INDOOR 4 4 the gage connection port of the compressor suction FAN COIL (CONSTANT VOLUME) service valve. SPLIT SYSTEM COMBINATION 3. Sweat the pilot solenoid valve supplied in the hot gas ac- Step 1 — Install Piping (See Fig. 4) cessory package directly to the hot gas bypass valve on 3 the / in. ODF external equalizer port. 8 1 4. Install field-supplied / in. copper tube (flared with a nut 4 on each e

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Step 2 — Install Control Wiring (See Fig. 5) ACCESSORY OPERATION AND ADJUSTMENT 1. Install a field-supplied relay with a 24-v coil and normal- ly closed contacts rated for 20 va at 125 vac inductive load. Mount this relay in the 38AKS control box. Adjustment — The hot gas bypass valve is set to begin opening when the suction pressure falls to approximately NOTE: This relay is identified in Fig. 5 as HGR (hot gas 62 psig (427 kPa). The pressure corresponds to a chilled water relay). set point of