Table of Contents
Advertisement
Page 28
Section 7
ELECTRICAL CONNECTIONS
WARNING
The Brute 1000 & 1200 appliances must be
electrically grounded in accordance with the
requirements of the authority having jurisdiction or,
in the absence of such requirements, with the latest
edition of the National Electrical Code, ANSI/NFPA
70, in the U.S. and with latest edition of CSA C22.1
Canadian Electrical Code, Part 1, in Canada. Do
not rely on the gas or water piping to ground the
metal parts of the boiler. Plastic pipe or dielectric
unions may isolate the boiler electrically. Service and
maintenance personnel who work on or around the
boiler, may be standing on wet floors and could be
electrocuted by an ungrounded boiler. Electrocution
can result in severe injury or death.
Single pole switches, including those included in
safety controls and protective devices, must not be
wired in a grounded line.
All electrical connections are made on the terminal
blocks that are located inside the control panel.
Note - All internal electrical components have been
prewired. No attempt should be made to connect
electrical wires to any other locations except the
terminal blocks.
The wiring connections are shown in Figures 21
Note - Do not make and break the line voltage to the
Brute as a signal to call for heat.
On a system operating as a Lead/Lag installation -
A "call for heat/ end call for heat" must be connected
to the Primary TT or Interlock terminals (terminals 5
and 6 on TB7) on the controller which is acting as the
Lead/Lag master.
On a boiler operating individually -
A "call for heat/ end call for heat" must be connected
to the Primary Thermostat terminals (terminals 5
and 6 on TB7). Any jumper to the System terminals
(terminals 3 and 4 on TB6) must be removed. For
details, see Section 9.
Some Brute components are designed to have
constant voltage during normal operation. If the
Brute's supply voltage is toggled as a call for heat
signal, premature failure of these components may
result.
The Brute does not recognize 4 mA as a signal to shut
off. If the call for heat is not connected between the field
interlock terminals, Brute will remain in low fire when it
sees 4 mA as a modulating signal.
The supply voltage to the Brute must not be
disengaged, except for service or isolation, or
unless otherwise instructed by procedures outlined
in this manual. To signal a call for heat, use the
correct terminals as instructed in Section 9.
7.1
Main Power
For the convenience of the installer, a junction box
has been placed at the rear of the boiler (internal)
for power connections. These connections include
three pre-stripped wires (black, white and green) for
power connections. The Brute 1000 & 1200 use a
single 120-volt 15 Amp fused supply.
7.2
Pump Connections
The Brute energizes the appropriate pump contacts
when it receives a call for heat or domestic hot
water. Once the call for heat or DHW is satisfied, the
pump will remain on for the defined pump overrun
time.
Note - The contacts for the System and DHW
pumps are dry contacts. Appropriate voltage must
be supplied to the System and DHW pumps for
proper operation.
and22.
The Boiler pump is controlled using a 120V
single-phase 15 Amp power supply. The current
supplied by this source cannot exceed 7.4 FLA. If
more current is required, an additional relay/pump
contactor must be installed. Wire the relay so it is
energized from the contacts on the boiler to allow
the pump to be turned on and off with the demand.
The System pump connections are located on
terminal block 5 (5-6 on TB5) in the control panel.
(See Figure 20.) The System pump contacts are
rated for 120 VAC, 7.4 Amps. To use the contacts,
power must be supplied on one terminal with the
other terminal wired to the relay controlling the
pump.
The DHW pump connections are located on terminal
block 5 (7-8 on TB5) in the control panel and are
rated for 120 VAC, 7.4 Amps. To use the contacts,
power must be supplied on one terminal, and the
other terminal wired to the relay controlling the
pump. Additional 120 VAC circuits may be required
for the pumps.
B
W
RADFORD
HITE
Caution
Advertisement
Table of Contents
Troubleshooting
