Electrical - New Yorker FR-HGS Series Installation, Operating And Service Instructions

6

Electrical

Positively assure all electrical connections are unpowered before attempting installation or service of electrical
components or connections of the boiler or building. Lock out all electrical boxes with padlock once power is
turned off.
Failure to properly wire electrical connections to the boiler may result in serious physical harm.
Electrical power may be from more than one source. Make sure all power is off before attempting any
electrical work.
Each boiler must be protected with a properly sized fused disconnect.
Never jump out or make inoperative any safety or operating controls.
The wiring diagrams contained in this manual are for reference purposes only. Refer to the wiring diagram
of any controls used with the boiler. Read, understand and follow all wiring instructions supplied with the
controls.
A. GENERAL
1. Install wiring and electrically ground boiler in
accordance with requirements of the authority
having jurisdiction, or in absence of such
requirements the National Electrical Code,
ANSI/NFPA 70, and/or the CSA C22.1 Electric
Code.
2. Refer to National Electric Code or Local
Electric Codes for proper size and type of wire
required. Follow Code.
3. A separate electrical circuit must be run from
the main electrical service with an over-current
device/disconnect in the circuit. A 15 amp
circuit breaker is recommended. A service
switch is recommended and may be required
by some local jurisdictions.
4. Wiring should conform to Figure 6-1.
B. SYSTEM CONTROLS AND WIRING
1. Refer to National Electric Code or Local
Electric Codes for proper size and type of wire
required. Follow Code.
2. Use anti-short bushings on all wiring passing
through boiler jacket, junction boxes and/or
control boxes.
3. Use armored cable (BX) over all exposed line
voltage wiring.
4. If an Indirect-Fired Domestic Hot Water Heater
is used, use priority zoning. Do not use priority
zoning for Hydro-Air Systems.
5. Single or Multiple Zone Water System – Refer
to Figure 6-1 for electrical diagram. Connect
the system circulator wire leads to the proper
locations on the HydroStat. See Figure 6-1.
111079-01 - 12/20
FR
!
DANGER
!
WARNING
C. INSTALL A ROOM THERMOSTAT on an
inside wall about four feet above floor. Never
install thermostat on an outside wall or where
it will be influenced by drafts, hot or cold water
pipes, lighting fixtures, television, rays of the sun
or near a fireplace. Keep large furniture away from
thermostat so there will be free movement of room
air around this control.
Connect the thermostat to the 'T-T' terminals on
the control.
The maximum allowable current for each
circulator is 5 amps at 120V AC. For circulators
with higher amp ratings, you must install a
circulator relay or starter coil to provide line
voltage to the circulator and connect only the
relay or starter coil to boiler terminals. The
combined boiler and circulator amperage must
not exceed 15 amps.
Install over-current protection in accordance with
authority having jurisdiction or, in the absence
of such requirements, follow the National Electric
Code, NFPA 70, and/or CSA C22.1 Electrical
Code. Do not provide over-current protection
greater than 15 amperes.
Installation & Service Manual
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WARNING
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