Wiring Diagram; Ladder Diagram - Mr. Heater MHU 45 Operating Instructions And Owner's Manual

DISCONNECT ALL POWER
BEFORE SERVICING.
FOR PROPER GROUNDING, REFER
TO LOCAL CODES.
04/07 Revision B #60016
WIRING SCHEMATIC FOR UNITS WITH
6-PIN CONNECTOR GCI-3A (23L53) CONTROL BOARD
3
Enerco | Compact Unit Heater
OPTIONAL THERMOSTAT INSTALLATION
IT IS RECOMMENDED TO USE 18AWG WIRE
WHEN INSTALLING THE THERMOSTAT.
CONNECT THERMOSTAT WIRING TO
TERMINALS 'R' AND 'W' AS ILLUSTRATED ON
THE SCHEMATIC DIAGRAM.
(OPTIONAL)
THERMOSTAT
NOTE:
IF ANY OF THE ORIGINAL WIRE AS
SUPPLIED WITH THE APPLIANCE MUST
BE REPLACED, IT MUST BE REPLACED
WITH WIRING MATERIAL HAVING A
TEMPERATURE RATING OF AT LEAST
105 ° C.
WIRE DIAGRAM
GAS FIRED UNIT HEATER DSI-IGNITION
MHU45LP
HSU45LP
MHU75LP
HSU75LP
60006

LADDER DIAGRAM

Flame Rollout Switch
Flamber le commutateur
de deploiement
Flame Sensor /
Detecteur de
Flame Rollout Switch
renommee
Flamber le commutateur
de deploiement
Gas Valve /
Air Switch/
Interrupteur a air Valve a gaz
Igniter / Contact
14
Operating Instructions and Owner's Manual
MHU45NG
HSU45NG
MHU75NG
HSU75NG
REV.
THERMOSTAT