HTP EFT-80 Installation, Start-Up, Maintenance, Parts, Warranty

LP-387 Rev. 7.3.15
38
Part 6 - Wiring
To avoid electrical shock, turn o all power to the boiler prior
to opening an electrical box within the unit. Ensure the power
remains o while any wiring connections are being made.
Failure to follow these instructions could result in component or
product failure, serious injury, or death. Such product failure IS
NOT covered by warranty.
Jumping out control circuits or components WILL VOID product
warranty and can result in property damage, personal injury, or
death.
Label all wires prior to disconnecting them when servicing
the boiler. Wiring errors can cause improper and dangerous
operation. Failure to follow these instructions may result in
property damage or personal injury.
It is of extreme importance that this unit be properly grounded. It
is very important that the building system ground is inspected by
a qualied electrician prior to making this connection. Electrical
power must only be turned on when the boiler is completely
lled with cold water. Failure to follow these instructions could
result in component or product failure, serious injury, or death.
Electrical Shock Hazard - Turn o electrical power supply at
service entrance panel before making any electrical connections.
Failure to follow do do so could result in serious injury, or death.
Wiring must be NEC Class 1. If original wiring supplied with
the boiler must be replaced, use only TEW 105
o
C wire or
equivalent. Boiler must be electrically grounded as required
by the National Electrical Code, ANSI/NFPA 70 - Latest
Edition.
A. Installation Must Comply With
1. National Electrical Code and any other national, state,
provincial, or local codes or regulations.
2. In Canada, CSA C22.1, Canadian Electrical Code Part 1, and
any local codes.
B. Field Wiring
Terminations
All connections
made to the boiler
in the eld are done
inside the electrical
junction box located
on the left side of
the unit. Multiple
knockout locations
are available to route
eld wires into and
out of the electrical
junction box.
C. Field Wiring
The control used in
the boiler is capable
of directly controlling
1 pump in standard
mode and 2 pumps
when congured as a cascade master boiler. As a standard
unit, each pump can provide a maximum of 4 amps at 120
volts. If a pump requires more than this amount of power, an
external contactor or motor starter is needed. If the boiler is
congured as a cascade master, the system pump output is a
dry contact output capable of switching 5 amps at 120 volts,
in addition to the boiler pump output sourcing 4 amps each.
The electrical junction box has separate, clearly marked
terminal strips for line voltage and low voltage wiring. Special
jacks are provided for trouble-free cascade system wiring
using standard CAT3 or CAT5 patch cables.
NOTE: If local electrical codes or conditions require an
additional service switch, the installer must provide and install
a fused disconnect or 15 amp (minimum) service switch.
D. Line Voltage Wiring for Standard Boiler
NOTE: A termination plug is included in the CAT 3 / CAT 5 Bus
Connection Point, labeled J3 in Figure 29. DO NOT REMOVE
THIS PLUG! Doing so will aect boiler operation and void
warranty.
1. Connect the incoming power wiring to the line voltage
terminal strip in the electrical junction box at terminals 120V,
Neutral, Ground (shown in Figure 29).
2. A line voltage fused disconnect switch may be required,
externally mounted and connected according to local codes
that may apply.
3. Connect the boiler pump as shown in Figure 29 to the
terminals marked 1 – (HOT), 2 – (NEUT), and 3 – (GND). The
Figure 27 - Piping Exhaust Around Obstructions - Suggested
Condensate Removal
Figure 28 - Knockout Locations

HTP EFT-80 Specifications

General

Brand	HTP
Model	EFT-80
Category	Boiler
Language	English