Lennox International Inc. GSB8-S 사용자 설명서

14

ELECTRIC POWER SUPPLY
Electrically bond boiler to ground in accordance with 

      

requirements of authority having jurisdiction.  Refer to:

USA- National Electrical Code, ANSI/NFPA 70.

• 

Canada - Canadian Electrical Code, Part I, CSA C22.1: 

• 

Safety Standard for Electrical Installations.

Run separate 115 volt circuit from separate overcurrent 

protective device in your electrical service entrance panel. 

This should be 15 ampere circuit. Locate shut-off switch 

at boiler. It must be turned off during any maintenance. 

Connect 115 volt electrical supply to primary leads on 24 

volt transformer. Solder and tape or securely fasten these 

connections with wire nuts.
Boiler, when installed, must be electrically grounded in 

accordance with requirements of the authority having 

jurisdiction or, in absence of such requirements, with 

National Electrical Code, ANSI/NFPA No. 70 and/or 

Canadian Electrical Code, Part I, CSA C22.1:  Safety 

Standard for Electrical Installations. Run 14 gauge or 

heavier copper wire from boiler to grounded connection in 

service panel or properly driven and electrically grounded 

ground rod.

Turn off electrical power at fuse box before 

making any line voltage connections.  Follow 

local electrical codes.

INSTALL YOUR THERMOSTAT
Thermostat location has important effect on 

operation of your boiler system. BE SURE TO FOLLOW 

INSTRUCTIONS INCLUDED WITH YOUR THERMOSTAT.
Locate thermostat about fi ve feet above fl oor on inside 

wall. It may be mounted directly on wall or on vertically 

mounted outlet box. It should be sensing average room 

temperature, avoid following:

DEAD SPOTS: 

 Behind 

doors 

  Corners and alcoves

HOT SPOTS: 

  Concealed pipes  

Fireplace

 TV 

sets 

 Radios 

 Lamps

 Direct 

sunlight

 Kitchens 

COLD SPOTS: 

  Concealed pipes or ducts 

  Stairwells - drafts

  Doors – drafts

  Unheated rooms on other side of wall

Set heat anticipator at 0.4 amps for boilers equipped 

with standing pilot, and at 0.6 amps for boilers equipped 

with intermittent ignition. Connect 24 volt thermostat 

leads to two wires tagged “24 volt thermostat” on boiler. 

For boilers with 67D-1 fl oat type low water cut-off, two 

wires are black. One wire is located on secondary of 24 

volt transformer, second wire is located on pressure limit 

control. For boilers with PS-802 probe type low water 

cut-off, one wire is green and is located on terminal B of 

PS-802, second wire is black and located on pressure limit 

control.

Certain types of electronic thermostats may lose their 

memory or shut down. With 67D-1 fl oat type low water 

cutoffs, this may occur each time thermostat calls for heat, 

due to internal circuit in vent damper. With PS-802 probe 

type low water cut off’s, this may occur each time low 

water cut off detects low water condition. If this is case, 

isolation relay is required for thermostat circuit. 24 volt 

single pole single throw (SPST) normally open (N.O.) relay 

is required, such as Honeywell R8222A or equivalent. Wire 

as shown in Fig. 10A or Fig. 10B.

VENT DAMPER
Boiler is equipped with factory wired harness with 4 pin 

molex plug, that plugs into 4 pin molex receptacle inside 

vent damper operator.
Vent damper must be connected for boiler to operate.
Wiring diagrams follow for various different models.

Label all wires prior to disconnection when 

servicing controls. Wiring errors can cause 

improper and dangerous operation. Verify 

proper operation after servicing.