Step 6 - Install Accessories; Remote Enhanced Display; Low Ambient Temperature Operation; Unit Security/Protection Accessories - Carrier AQUAFORCE 30XA080-500 Installation Instructions Manual

5/8 in. HEX
6" MINIMUM
CLEARANCE FOR
THERMISTOR
REMOVAL
Fig. 39 — Dual Leaving Water Thermistor Well (Part No. 00PPG000008000A) and
Step 6 — Install Accessories —
sories are available to provide the following optional features
(for details, refer to the Controls and Troubleshooting guide
shipped with the unit).
ENERGY MANAGEMENT MODULE — The energy man-
agement module is used for any of the following types of
temperature reset, demand limit and ice features:
• 4 to 20 mA inputs for cooling set point reset and capacity
limit (requires field-supplied 4 to 20 mA generator)
• 0 to 10 v output for percentage total capacity running
• 24 v discrete outputs for shutdown and running relays
• 10k space temperature input
Discrete inputs for occupancy override, demand limit
switch 2 (step 1 demand limit is wired to the base board,
requires field-supplied dry contacts), remote lockout switch
and ice done switch (requires field-supplied dry contacts).
REMOTE ENHANCED DISPLAY (OR TOUCH PILOT™
DISPLAY) — For applications where remote monitoring of
the equipment is required; the remote enhanced display (or
Touch Pilot display) provides an indoor display, capable of
monitoring any equipment on the Carrier Comfort Network
(CCN) bus. A CCN bus is required.
LOW AMBIENT TEMPERATURE OPERATION — If out-
door ambient operating temperatures below 32 F (0° C) are
expected, refer to separate installation instructions for low-
ambient operation using the low ambient temperature head
pressure control accessory.
MINIMUM LOAD ACCESSORY — Contact your local
Carrier representative for more details if a minimum load ac-
cessory is required for a specific application. For installation
details, refer to separate installation instructions supplied with
the accessory package.
UNIT SECURITY/PROTECTION ACCESSORIES — For
applications with unique security and/or protection require-
ments, several options are available for unit protection.
Security grilles and hail guards are available. Contact a local
Carrier representative for more details. For installation details,
refer to separate installation instructions supplied with the
accessory package.
COMMUNICATION ACCESSORIES — A number of com-
munication options are available to meet any requirement.
Contact your local Carrier representative for more details. For
1/4-18 NPT
1.188 in.
Dual Leaving Water Thermistor (Part No. 00PPG000008105A)
A number of acces-
WIRE TIE
2.315 in.
a30-3999
THERMISTOR WIRE
AND SECURE
TO CHILLED WATER PIPE
installation details, refer to separate installation instructions
supplied with the accessory package.
SERVICE OPTIONS — Two accessories are available to aid
in servicing 30XA units: a ground fault convenience outlet
(GFI-CO) and a remote service port.
The GFI-CO is a convenience outlet with a 4-amp GFI
receptacle.
The remote service port is housed in a weather-proof enclo-
sure with a communication port to plug in the Navigator™
device.
Contact your local Carrier representative for more details.
For installation details, refer to separate installation instructions
supplied with each accessory package.
CONTROL TRANSFORMER — The control transformer
accessory eliminates the need for a separate power supply.
Step 7 — Leak Test Unit —
shipped with a complete operating charge of R-134a (see
Tables 1A and 1B) and should be under sufficient pressure to
conduct a leak test.
®
IMPORTANT: These units are designed for use with
R-134a only. DO NOT USE ANY OTHER refriger-
ant in these units.
Perform a leak test to ensure that leaks have not developed
during unit shipment. Dehydration of the system is not required
unless the entire refrigerant charge has been lost. There are
several O-ring face seal fittings utilized in the oil line piping. If
a leak is detected at any of these fittings, open the system and
inspect the O-ring surface for foreign matter or damage. Do not
reuse O-rings. Repair any leak found following good refrigera-
tion practice.
DO NOT OVERTIGHTEN THESE FITTINGS. Over-
tightening will result in O-ring damage.
Step 8 — Refrigerant Charging
DEHYDRATION — Refer to Carrier Standard Service Tech-
niques Manual, Chapter 1, Refrigerants, Sections 6 and 7 for
details. Do not use compressor to evacuate system.
77
INSERT THERMISTOR UNTIL
O-RING MEETS THE
THERMISTOR WELL BODY.
LOOP
The 30XA units are
CAUTION
a30-4000