Specifications

34
WARNING
Electric shock hazard. For your safety, turn off elec-
trical power supply at service panel before making
any electrical connections. Failure to do so can cause
severe personal injury or death.
!
12.1 Codes
Installation must comply with National Electrical Code, author-
ity having jurisdiction, and in Canada, with CSA C22.1 Canadian
Electrical Code and authority having jurisdiction.
NOTICE
Wiring shall be N.E.C Class 1. Use only type 105°C
wire or equivalent if original boiler wiring must be
replaced. System shall be electrically grounded as
required by National Electric Code ANSI/NFPA 70.
12.2 Line Voltage Connections
System installation must include :
120 VAC dedicated circuit (15 amp) to Boiler, control •
module, circulator pumps and relay switches.
120 VAC dedicated circuit will extend up to • freewatt
Transfer Switch.
240 VAC dedicated circuit (2 pole; 15 amp) to HONDA MCHP •
unit.
240 VAC dedicated circuit shall have serviceman’s •
switch fi eld installed near Honda MCHP on circuit
between main service panel and freewatt Transfer
Switch.
9.3 Line Voltage Wiring Specifi cations
240 VAC Wiring: All wiring must conform to National •
Electric Code and authority having jurisdiction. Wiring
must be N.E.C. Class 1. In Canada, C.S.A. C22.1
Cana dian Electrical Code Part 1 and authority having
jurisdiction. Wiring must be C.S.A. C22.1 C.E.C. Part 1.
120 VAC Wiring: All wiring must conform to National •
Electric Code and authority having jurisdiction. Wiring
must be N.E.C. Class 1. In Canada, C.S.A. C22.1
Canadian Electrical Code Part 1 authority having
jurisdiction must be followed. Wiring must be C.S.A.
C22.1 C.E.C. Part 1.
12.4 freewatt Control Module Installation
Mount module’s enclosure on solid wall or partition after •
determining location of freewatt module. Recommend
enclosure be located close to freewatt PLUS Boiler,
Honda MCHP and HI Module, within reach of supplied, pre-
terminated cable.
Mounting 2 ft. wide x 4 ft. high sheet of plywood provides •
mounting surface for control module, relay switches and HHI
module. Unit may be mounted up to 20 feet away. Locate
enclosure with installation and service accessibility in mind.
Position control module enclosure above ECR relay •
switches, place enclosure on relay switch modules with
four ½” off set nipples, level, and mark mounting holes.
Start screws, #10, 4 each (fi eld sourced) for keyhole type •
mounting holes in upper corner(s). Tighten screws down
to 1/8” (3mm) from surface.
Hang enclosure on screws, level enclosure and tighten •
screws.
Install four nuts on ½” offset nipples to secure enclosure •
to relay switch modules. Figure 12-1 .
WARNING
Electric shock hazard. Do not route un-switched
line-powered cables or wires through freewatt PLUS
System. Failure to do so can cause severe personal
injury or death.
!
Recommend no additional electrical connections be made
within freewatt Control module for line power. If line
power is required for condensate pump, separate junction
box and receptacle should be provided.
120 VAC dedicated circuit shall conform to NEC and use as
minimum 3-conductor, 14 Ga. Cable.
12.5 Wiring Instructions
Provide and install non-fused disconnect or 120VAC •
service switch ( 15 amp recommended) as required by
authority having jurisdiction.
Route 120 VAC power wiring from service switch to boiler’s •
line voltage terminal strip on boiler control panel as outlined
in freewatt PLUS Boiler Installation, Operation and
Maintenance Manual. See Location 8 in Figure 12-2.
Figure 12-1 Typical freewatt PLUS Control
Module Confi guration
12 - ELECTRICAL WIRING & CONNECTIONS