30GXN,R080-528 30HX076-271 Minimum Load Control Accessory 50/60 Hz
Installation Instructions
Part No. 30GX-900---048,
(60 Hz —
Part No.
(50 or 60 Hz — 230-v Control)
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 — Examine Package Contents . . . . . . . . . . . . 1
Step 2 — Install Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
•REMOVE MINIMUM LOAD PORT PLUGS AND INSTALL FITTINGS
•INSTALL PIPING
•INSTALL BALL AND SOLENOID VALVES
•CONNECT PIPING
•30GXN,R UNITS ONLY
Step 3 — Dehydrate and Recharge Circuit. . . . . . . . 3 Step 4 — Install Control Wiring. . . . . . . . . . . . . . . . . . . 3
•30HX UNITS
•30GXN,R UNITS
•ALL UNITS
Step 5 — Configure Unit for Minimum
Load Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 6 —Test Minimum Load Relay
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 7 — Adjust Setting of Minimum
Load Ball Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SAFETY CONSIDERATIONS
Installing, starting up, and servicing
Only trained, qualified installers and service technicians should install, start up, and service this equipment.
When working on
Follow all safety codes. Wear safety glasses and work gloves. Use care in handling equipment.
Be sure power to equipment is shut off before performing maintenance or service.
IMPORTANT: When removing refrigerant, use an approved refrigerant recovery device. Do not vent refrig- erant into the atmosphere.
INTRODUCTION
The minimum load control accessory allows 30HX and 30GXN,R chillers to have their capacities decreased below the standard fully unloaded condition. The accessory provides more precise control of leaving fluid temperature during light load conditions.
The 30GXN,R and 30HX chillers have a
INSTALLATION
Step 1 — Examine Package Contents — Pack- age includes solenoid valves, ball valves,
Table 1 — Accessory Package Contents
and
ACCESSORY PACKAGE |
| ACCESSORY PART NUMBER | |||||
COMPONENTS |
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Solenoid Valve | (2) | EF23JX212 | (2) | EF23JX231 | |||
Ball Valve | (2) | EP71BA201 | (2) | EP71BA201 | |||
(4) | 30GX503492 | (4) | 30GX503492 | ||||
Tube Assembly | (2) | 30GX503487 | (2) | 30GX503457 | |||
Tube Assembly (Condenser | (2) | 30HX402343 | (2) | 30HX402343 | |||
Oil Separator) | |||||||
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FIELD SUPPLIED MATERIAL — REQUIRED PARTS | |||||||
(Ordered Separately) |
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5/ |
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8 |
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Thread Sealant, Electrical Supplies |
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book | 2 | PC 903 | Catalog No. | Printed in U.S.A. | Form | Pg 1 | 102 | Replaces: | |
Tab | 5c |
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