Step 4 - Fill The Chilled Water Loop; Water System Cleaning - Carrier 09FC020 Installation, Start-Up And Maintenance Instructions

09FC
Control
Panel
EWT
(Note 2)
36"
(Note 1)
NOTES:
1. Allow 36 in. for fan VFD access. Verify 36 in. meets local codes.
2. EWT and LWT thermistors must be installed in the field.
Thermistors are supplied inside control panel. Add 1/4 in. NPT hole in pipe for mounting.
LWT thermistor well must be in mixed flow piping.
3. Chiller tube service must be done from control panel end for this arrangement. See chiller
certified drawings for details.
Bypass Valve
Actuator
Bypass Valve
Entering Water
Connection
Step 4 — Fill the Chilled Water Loop

WATER SYSTEM CLEANING

Proper water system cleaning is of vital importance. Excessive
particulates in the water system can cause excessive pump seal
wear, reduce or stop flow, and cause damage of other components.
Water quality should be maintained per recommendations in the
chiller installation manual. This may vary for different types of
chillers. Failure to maintain proper water quality may result in heat
exchanger failure.
09FC Unit
Fig. 21 — 09FC 050-080 Parallel Piping
30XV 200, 250-500 Standard Tier
160-500 Mid Tier
140-500 High Tier
Coil Entering
Water Manifold
¼" NPT Drain
Fig. 22 — Modular Unit Series Piping
Coil Leaving
Water Manifold
Bypass Line
Failure to properly clean all piping and components of the
chilled water system before unit start-up may result in
plugging of the heat exchanger, which can lead to poor
performance, nuisance alarms and damage from freezing.
Freezing damage caused by an improperly cleaned system
represents abuse and may impair or otherwise negatively affect
the Carrier product warranty.
1. Install a temporary bypass around the unit to avoid circulating
dirty water and particulates into coils during the flush. Use a
temporary circulating pump during the cleaning process.
21
Chiller
LWT
(Note 2)
¼" NPT Drain
Check Valve
Service Valve
Leaving Water
Connection
CAUTION