Electrical Wiring; Field-Installed Power Wiring; Field-Installed Low Voltage Wiring; Figure 7 - Conversion Of Npt To Npsh Type Fittings (Vb Units With Npt Fittings Only) - Johnson Controls VB09 Installation, Operation And Maintenance Manual

SECTION 1 - INSTALLATION

FIGURE 7 - CONVERSION OF NPT TO NPSH TYPE FITTINGS (VB UNITS WITH NPT FITTINGS ONLY)

ELECTRICAL WIRING

Lock all electrical power supply switches
in the OFF position before installing the
unit. Failure to disconnect power supply
may result in electrical shock or even
death.

Field-Installed Power Wiring

Power wiring to the equipment must conform to Na-
tional Electrical Codes (NEC), local electrical codes,
and must be performed by a licensed electrician.
Provide each unit with its own separate electrical cir-
cuit, means of circuit protection, and electrical discon-
nect switch. Follow current NEC ANSI/NFPA 70, CSA
C22.1 C.E.C. Part 1, and state and local codes.
Failure to provide these shut-off means
could cause electrical shock or fire, re-
sulting in damage, injury, or death.
18
1/2-INCH OR 3/4-INCH FPT BALL VALVE
(FACTORY OR FIELD PROVIDED)
FEMALE SWIVEL
1/2-INCH OR 3/4-INCH NPSH THREADS
GASKET INCLUDED
WITH HOSE
ADAPTER MPT TO NPSH
INCLUDED WITH HOSE
GASKET INCLUDED
WITH HOSE
1/2-INCH OR 3/4-INCH FLEXIBLE
CONNECTOR HOSE (24 INCHES LONG)
FEMALE SWIVEL
1/2-INCH OR 3/4-INCH NPSH THREADS
ADAPTER MPT TO NPSH
INCLUDED WITH HOSE
CHASSIS WATER CONNECTION
1/2-INCH OR 3/4-INCH FPT
(FACTORY PROVIDED)
NOTE
National Pipe Straight Hose (NPSH) connection
Use copper conductors only! Failure
to use copper conductors can result in
equipment damage.
Verify that the available unit power supply is compat-
ible with the unit's nameplate rating. Ensure the break-
er is properly sized as per the nameplate. The line volt-
age supply enters through the right side of the cabinet
at the 7/8-inch power entrance knock-out.
Connect to the line side of the factory-installed termi-
nal block. Unit terminals are not designed to accept
other types of conductors. Failure to use copper con-
ductors may result in equipment damage.

Field-Installed Low Voltage Wiring

Select a location for room thermostat, away from supply
air registers, on draft-free interior wall that is far from
lights, television, direct sunlight, or other heat sources.
Locate thermostat away from supply
drafts. Ensure the back of the thermostat
is sealed and protected from air drafts.
Short cycling can result in damage to
the unit.
FORM 145.18-IOM1
ISSUE DATE: 8/30/2018
LD27628