Enviro VB09-36, Установка, эксплуатация и обслуживание, Страница: 25 / 40

FORM ET145.18-IOM1 (115)
ENVIRO-TEC 25
9. CHASSIS INSTALLATION
Prior to installation of the refrigeration chassis, and
connection to the supply and return risers, the entire
water loop system must be flushed and cleaned. See
Section 14.
DO NOT APPLY SEALING TAPE OR PIPE DOPE ON
NPSH STYLE FITTINGS!
Check that female end gasket from the hose is not
missing, has no visible damage and free of debris.
ALWAYS USE A BACK-UP WRENCH WHEN
INSTALLTING HOSES!
Protect chassis from physical damage, drywall dust,
paint fumes and construction contamination during.
Remove the inner service panel from the cabinet, and inspect
the interior compartment for debris.
Locate the supply and return shut-off valves, and verify that the
valves are closed. Check to see what type of hose kit fittings
were provided with the unit. Unit shipped after June 2013
feature NPSH fittings (straight thread), while previous
generation hose kits are NPT type (tapered thread). Refer to
previous section 6B for more information.
HOSES MUST BE HAND TIGHTENTED THEN
FURTHER TIGHTENED NO MORE THAN 1/4 TURN.
DO NOT APPLY EXCESSIVE FORCE!
ALWAYS USE A BACK-UP WRENCH WHEN
TIGHTENING HOSES TO VALVES! OTHERWISE
VALVE SOLDER JOINT MAY FAIL LEADING TO
PROPERTY DAMAGE OR SERIOUS INJURY!
A. Units with NPSH Valve Connection and Hose Sets:
NPSH Flexible connection hoses do not require any pipe dope
or sealant tape. DO NOT ADD THREAD SEALANT OR PIPE
DOPE TO NPSH FITTINGS. Connect the hoses to the NPSH
fitting on the shut-off valves. Always use a back-up wrench
when tightening the hose to the valve fitting. Allow the hoses to
hang free inside the cabinet.
Once chassis is slid into place attach the NPSH hoses to the
NPSH fittings on the chassis stub outs projecting through the
top of the compressor compartment access cover. Always use a
back-up wrench to prevent twisting of the copper water piping
within the chassis assembly. Refer to the following page for
proper chassis installation.
B. Units with NPT-Style (Tapered Pipe Thread) Valve
Connection and Hoses:
Factory supplied NPT flexible connection hoses come with
thread sealing compound pre-applied. NO ADDITIONAL
THREAD SEALING TAPE SHOULD BE REQUIRED. Connect
the hoses to the FPT fitting on the shut-off valves. Always use a
back-up wrench when tightening the hose to the valve fitting.
Allow the hoses to hang free inside the cabinet.
Slide chassis into place, see following page. J-swivel adapter
(supplied with the hose kit), comes with thread sealing
compound pre-applied. NO ADDITIONAL THREAD SEALANT
SHOULD BE REQUIRED. Thread the swivel adapters into the
FPT fittings projecting through the top of the compressor
compartment access cover. Always use a back-up wrench to
prevent twisting of the copper water piping within the chassis
assembly.
To minimize the possibility of damage to the chassis
or cabinet, for maximum ease of installation, the use of
a two-wheeled dolly is strongly recommended.
Do not contact the finned coil face. Damage to the fins
will result.
1. Lift chassis from the front of chassis as shown.
2. Align chassis with the opening of the cabinet. Tilt back
sufficiently for the base of the chassis to clear the
mounting rails on the cabinet drain pan.