Specifications

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 903 Catalog No. 530-930 Printed in U.S.A. Form 09/30/38-6SI Pg 1 506 10-03 Replaces: 09/30/38-5SI
Book 122
Tab 3a4a5c
Installation and Start-Up Instructions
Part Numbers: 30GT-911---074, 30GT-911---075, 30GT-911---076,
30GT-911---077, 30GT-911---078, 30GT-911---079, 30GT-911---080,
30GT-911---081, 30GT-911---082
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
APPLICATION NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5
Winter Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Step 1— Install Field-Fabricated
Wind Baffles and Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Step 2 — Mount Motormaster V Controls
and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
MOTORMASTER V CONTROLLERS, FUSE
BLOCK RELAYS AND FUSES
PRESSURE TRANSDUCER
Step 3 — Make Electrical Connections. . . . . . . . . . . . . . . . .11
09DK054-094, 30GTN,GTR,GUN,GUR040-110,
230B, 245B, 38AH044-104 (Except Single Circuit)
38AH024-034, 38AKS028-044, 09DK020-044
38AH044-084 SINGLE CIRCUIT AND 124A/B, 134A/B
30GTN,GTR,GUN,GUR130-210, 230A-315A,
330A/B-420A/B
Step 4 — Configure Motormaster V Control. . . . . . . . . . . 24
Step 5 — Configure Unit for Motormaster V
Operation, 30GTN,GTR,GUN,GUR Only . . . . . . . . . . . . . 24
Step 6 — Test Motormaster V Control. . . . . . . . . . . . . . . . . 24
START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,26
Drive Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27,28
EPM Chip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Liquid Line Pressure Set Point Adjustment . . . . . . . . . . . 27
Loss of CCN Communications. . . . . . . . . . . . . . . . . . . . . . . . 27
SAFETY CONSIDERATIONS
Installation, start-up, and servicing of this equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service technicians
should install, start up, and service this equipment.
When working on this equipment, observe precautions in
the literature and on tags, stickers, and labels attached to the
equipment and any other safety precautions that may apply.
INTRODUCTION
This book contains instructions for the installation and
start-up of the Motormaster V (MMV) control on models
09DK (100%, 50%/50% and 67%/30% split only), 30GTN,
GTR,GUN,GUR040-420, 38AH044-134, and 38AKS028-044.
The 30GTN,GTR,GUN,GUR230-420 units are shipped as 2
separate modules. See Table 1 for details of modular units.
Two Motormaster Accessory Packages are required for
modular units.
Table 1 — 30GTN,GTR,GUN,GUR080-210 and
Associated Modular Units
The Motormaster V control is a motor speed control device
that adjusts condenser fan motor speed in response to declining
liquid refrigerant pressure. A properly applied Motormaster V
control extends the operating range of air-conditioning systems
and permits operation at lower outdoor ambient temperatures.
On 09DK units, the Motormaster V control is used in con-
junction with the standard fan cycling controls. See Table 2A
or 2B for the ambient temperatures at which the 09DK units
operate without modification.
Motormaster V control cannot be installed with the high-
static fan option.
Table 2A — Minimum Outdoor-Air Operating
Temperature — 09DK (English)
NOTE: See Legend and Notes on page 2.
Open all remote disconnects before servicing this equip-
ment. Electrical shock could result in personal injury.
UNIT
30GTN,GTR,GUN,GUR
ASSOCIATED UNIT MODULES
30GTN,GTR,GUN,GUR
080 230B
090 245B
100 255B, 270B
110 290B, 315B
130 None
150 230A-255A
170 270A, 330A/B, 360B (50 Hz)
190 290A, 360A, 360B (60 Hz), 390B
210 315A, 390A, 420A/B
UNIT
09DK
HEAD
PRESSURE
CONTROL
TD
(F)
COMPRESSOR CAPACITY
(%)*
100 75 50 25
Minimum Outdoor-Air
Temperature (F)
020,024,
028
FCPSs (1 Fan)†
30 29 34 38 51
25 38 40 42 53
20 47 47 46 56
034,044 FCPSs (2 Fans)†
30 12 19 22 43
25 22 25 29 47
30 31 31 36 51
054,064 FCPSs (2 Fans)†
30 29 34 38 51
25 38 40 42 53
20 47 47 46 56
074-094
FCPSs (2 Fans)†
ATSs (2 Fans)
30 12 19 22 43
25 22 25 29 47
20 31 31 36 51
09DK020-094
30GTN,GTR,GUN,GUR040-420/38AH024-134/38AKS028-034
Accessory Low Ambient Operation
Motormaster® V Control
50/60 Hz

Summary of content (28 pages)