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8
Electrical Information
A. General Information
WARNING! Risk of Shock or Explosion! DO NOT wire
110-120 VAC to the valve or to the appliance wall switch.
Incorrect wiring will damage controls.
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
• Wire the appliance junction box to unswitched 110-
120 VAC. This is required for proper operation of the
appliance.
• A 110-120 VAC circuit for this product must be protected
with ground-fault circuit-interrupter protection, in
compliance with the applicable electrical codes, when
it is installed in locations such as in bathrooms or near
sinks.
• Low voltage and 110/120 VAC voltage cannot be shared
within the same wall box.
Electrical Service and Repair
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper
operation after servicing.
WARNING! Risk of Shock! Replace damaged wire with
type 105º C rated wire. Wire must have high temperature
insulation.
Accessories Requirements
• This appliance may be used with a wall switch, wall
mounted thermostat and/or a remote control.
Wiring for optional Hearth & Home Technologies approved
accessories should be done now to avoid reconstruction.
Follow instructions that come with those accessories.
Junction Box Installation
WARNING! Risk of Shock! Label all wires prior to dis-
connection when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify proper
operation after servicing.
WARNING! Risk of Shock! Replace damaged wire with
type 105° C rated wire. Wire must have high temperature
insulation.
1. Remove bottom panel by removing two screws. Screw
locations are shown in Figure 8.1. After removing two
screws, gently lift the panel off the appliance avoiding
contact with the non-combustible board if possible.
2. Remove the one screw that secures the junction box to
the control tray panel. See Figure 8.2.
3. Remove screws on left and right sides of component
heat shield and lift it out of the control cavity.
Heat & Glo • MEZZO36-B/ST-B, MEZZO48-B/ST-B, MEZZO60-B/ST-B, MEZZO72-B/ST-B Installation Manual • 2300-973 Rev. R • 12/18
BOTTOM PANEL SCREW LOCATIONS
Figure 8.1 Bottom Panel Location
4. Route the wire through the strain relief in the outer wrap
and up through the cutout/slot located on the metal tray
under the junction box.
5. Make the connection inside the junction box to the 110-
120V wire. Connect green to the ground nut, black to
black, and white to white.
6. To reattach the junction box, insert one end of the
junction box in the slot provided and securely screw the
other end of the junction box to the control tray panel.
7. Reinstall component heat shield.
CAUTION! Risk of Overheating! Component heat shield
MUST be installed before operating appliance. Electrical
components will be damaged.
Figure 8.2 Junction Box Detail
In the event that the junction box may need to be ac-
cessed or installed after finish methods have been ap-
plied, access is possible by removing the bottom glass
shield.
COMPONENT INSULATION
COMPONENT HEAT SHIELD
CONTROL MODULE
AUX
BATTERY
TRAY
Figure 8.3. Valve Cavity (Lower Access Panel Removed)
JUNCTION BOX
LED POWER
SUPPLY
43
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