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10
ELECTRICAL DATA SHEET DEFINITIONS
1.
Optional
Circuit Breaker
designates the quantity and amp
rating of optional factory installed circuit breakers. Circuit
breakers are available in models with an ‘HT’ prefix. All
models over 48 amps have internal circuit breakers factory
installed.
2.
Maximum Lb./Hr.
designates maximum capacity of the
humidifier. Units are shipped from the factory preset at the
maximum rate. The output rate may be easily reset after
installation anywhere between 100% and 20% of maximum
capacity.
3.
Voltage
and
Phase
designates available phase and nominal
voltages. Single phase units may be operated from two legs
of a three phase supply but the load will be unbalanced.
4.
kW
is the power rating of the maximum output rate of the
humidifier. If a unit’s max output is adjusted lower, the kW is
reduced proportionally.
5.
Line Amp
and
Disc. Size
are amp ratings shown for use in
selecting electrical service requirements.
6.
Steam Cylinder
shows the quantity and model of steam
generating cylinders mounted inside the humidifier. Each
cylinder requires its own steam distribution pipe, steam hose,
and condensate return line.
7.
Cylinder Wire Current
is the current a single cylinder wire
should be carrying for a given unit at max output. This does
not include ‘dummy’ electrode wires that never carry any
current, i.e. humidifiers with C65 cylinders and single phase
humidifiers not using AX cylinders.
ELECTRICAL CONNECTIONS
POWER MUST BE OFF BEFORE MAKING ANY ELECTRICAL
CONNECTIONS.
Check unit electrical characteristics on the label on the outside
of the cabinet. The power provided must be the same as what
is described on the label. If it does not, contact your Carnes
Representative. All local and national codes must be followed
when connecting power to the unit.
A fused disconnect or circuit breaker, not provided by Carnes,
MUST
be installed per local and national codes. See
Table 4
for
recommended circuit ratings. The optional circuit breaker switch
installed in the humidifier is
NOT
for use as a replacement for
the required external disconnect switch but as a maintenance
convenience.
1. Remove screws securing hinged panel for access to wiring.
See Photos D, E and F
for different electrical locations.
2. An opening is provided on the bottom of the electrical
section. Bring electrical power lines through this opening and
connect to electric power terminals.
3. Connect cabinet ground terminals to an independent ground.
DO NOT
use the neutral of a four-wire power supply.
4. Replace electrical cover panel.
Residential Humidifier
Photo F
Screws
Incoming
Electrical
Photo D
Screws
Incoming
Electrical
HTHH
WARNING:
BEFORE MAKING ANY ELECTRICAL
CONNECTIONS SWITCH POWER OFF AT SERVICE
PANEL, FUSED DISCONNECT OR CIRCUIT
BREAKER AND LOCK THE DISCONNECTING
MEANS TO PREVENT POWER FROM BEING
SWITCHED ON ACCIDENTALLY.
(H_AH) (H_DH) (H_GH)
Humidifiers
Photo E
Screws
Incoming
Electrical