Table of Contents
Advertisement
SECTION 1 - INSTALLATION
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 System
Flushing and Cleaning on page 28.
Do not apply sealing tape or pipe dope on
NPSH style fittings.
Check that the female end gasket from the
hose is not missing, has no visible damage,
and is free of debris.
Always use a backup wrench when install-
ing hoses.
Protect the chassis from physical dam-
age, drywall dust, paint fumes, and any
other construction contamination during
installation.
Hoses must be hand tightened then fur-
ther tightened no more than 1/4 turn. Do
not apply excessive force.
Always use a backup wrench when tight-
ening hoses to valves. Otherwise, damage
to the valve solder joint can lead to prop-
erty damage or serious injury.
32
Remove the inner service panel from the cabinet, and
inspect the interior compartment for debris. Clear all
debris and vacuum construction dust from the cabinet.
Locate the supply and return shut-off valves. Verify the
following:
• The valves are closed.
• The type of hose kit fittings provided with the
unit. Units shipped after June 2013 feature NPSH
fittings (straight thread), while previous genera-
tion hose kits are NPT type (tapered thread). Refer
to Riser Loop on page 16 for more information.
For 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 backup wrench when tightening
the hose to the valve fitting. Allow the hoses to hang
free inside the cabinet.
Slide the chassis into place using the following steps:
1. Attach the NPSH hoses to the NPSHfittings on the
chassis stub-outs by projecting through the top of
the compressor compartment access cover.
2. Use a backup wrench to prevent twisting of the
copper water piping within the chassis assembly.
3. For chassis installation, see For Units with NPT
Style (Tapered Pipe Thread) Valve Connection
and Hoses on page 32 .
For 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 AD-
DITIONAL THREAD SEALING TAPE SHOULD
BE REQUIRED. Connect the hoses to the female pip
thread fitting on the shut-off valves. Always use a
backup wrench when tightening the hose to the valve
fitting. Allow the hoses to hang free inside the cabinet.
Slide chassis into place using the following steps. A
J-swivel adapter (supplied with the hose kit) comes
with thread sealing compound pre-applied. NO AD-
DITIONAL THREAD SEALANT SHOULD BE RE-
QUIRED.
FORM 145.18-IOM1
ISSUE DATE: 8/30/2018
Hide quick links:
Advertisement
Table of Contents
