LAARS Mighty Stack MS-080 (Sizes 199, 300, 399) - Install and Operating Manual - Manual (Page 18)

Laars Heating Systems Page 18
SECTION 5.
Electrical Connections
WARNING
The appliance 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
water heater. Plastic pipe or dielectric unions may
isolate the water heater electrically. Service and
maintenance personnel, who work on or around
the water heater, may be standing on wet floors
and could be electrocuted by an ungrounded water
heater.
AVERTISSEMENT
L’appareil doit être relié à la terre conformément
aux exigences de la réglementation locale ou,
en l’absence d’une telle réglementation, à la plus
récente édition du National Electrical Code (Code
national de l’électricité) ANSI/NFPA 70 aux États-
Unis, et à la plus récente édition du Code Canadien
de l’électricité 1 ère partie (Canadian Electrical
Code Part 1) CSA C22.1, au Canada. N’utilisez
pas les tuyauteries d’eau ou de gaz pour mettre
à la terre les pièces métalliques de la chaudière;
des tuyauteries en plastique ou des raccords
union diélectriques peuvent isoler électriquement
la chaudière. Les employés qui sont appelés à
travailler sur la chaudière ou autour peuvent être
électrocutés par une chaudière qui n’est pas mise à
la terre.
Single pole switches, including those of safety
controls and protective devices must not be wired in a
grounded line.
NOTE: All internal electrical components have been pre-
wired. No attempt should be made to connect electrical
wires to any other location except the wiring box.
5.1 Main Power
Connect a 15 amp. fused, 120-volt supply to
the main power switch. Both hot and neutral wires
are provided for connections inside the water heater
jacket. Ground wire can be connected to the grounding
screw in the box.
Wiring diagram is shown in Figure 7.
5.2 Field Wiring
Other Field Interlocks: To install other field-
wired switches (proving switches, flow switches, etc.),
remove the jumper between the terminals labeled “3”
and “4” (see Figure 6).
Figure 6. Terminal Block.