Carrier start-up and Bedienerhandbuch PDF herunterladen (Seite 17)

Water Supply and Quantity

— Check water supply. Water

supply should be plentiful and of good quality. See Table 4 for

water quality guidelines.

In all applications, the quality of the water circulated

through the heat exchanger must fall within the ranges listed in

the Water Quality Guidelines table. Consult a local water treat-

ment firm, independent testing facility, or local water authority

for specific recommendations to maintain water quality within

the published limits.

GROUND-LOOP APPLICATIONS (Not Applicable to

50RHC,RVC Units) — Temperatures between 25 to 110 F

and a cooling capacity of 2.25 to 3 gpm of flow per ton is rec-

ommended. In addition to complying with any applicable

codes, consider the following for system piping:

• Limit piping materials to only polyethylene fusion in the

buried sections of the loop.

• Do not use galvanized or steel fittings at any time due to

corrosion.

• Avoid all plastic to metal threaded fittings due to the

potential to leak. Use a flange fitted substitute.

• Do not overtighten connections.

• Route piping to avoid service access areas to unit.

• Use pressure-temperature (P/T) plugs to measure flow of

pressure drop.

Step 8 — Electrical Wiring

All field installed wiring, including the electrical ground,

MUST comply with the National Electrical Code (NEC) as

well as applicable local codes. In addition, all field wiring must

conform to the Class II temperature limitations described in the

NEC.

Refer to unit wiring diagrams Fig. 19 and 20 for a schematic

of the field connections, which must be made by the installing

(or electrical) contractor. Refer to Electrical Data for fuse sizes.

Consult the unit wiring diagram located on the inside of the

compressor access panel to ensure proper electrical hookup.

The installing (or electrical) contractor must make the field

connections when using field-supplied disconnect.

Operating voltage must be the same voltage and phase as

shown in Electrical Data shown in Tables 5-7.

Make all final electrical connections with a length of flexi-

ble conduit to minimize vibration and sound transmission to

the building.

IMPORTANT: Failure to comply with the above required

water quality and quantity limitations and the closed-

system application design requirements may cause damage

to the tube-in-tube heat exchanger that is not the responsi-

bility of the manufacturer.

To avoid possible injury or death due to electrical shock,

open the power supply disconnect switch and secure it in

an open position during installation.

Use only copper conductors for field-installed electrical

wiring. Unit terminals are not designed to accept other

types of conductors.

Pressure-

Temperature

Plugs

Boiler

Drains

Strainer – Field-Installed Accessory

(16 to 20 mesh recommended for

filter sediment)

Shut-Off

Valve

Water

Control

Valve

Flow

Regulator

Pressure

Tank

Water Out

Water In

From Pump

Fig. 18 — Typical Ground-Water Piping Installation

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 43 44

Kommentare zu diesen Handbüchern

Keine Kommentare

Carrier start-up and Bedienerhandbuch Seite 17

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Warmwasserbereiter & Kessel Carrier start-up and