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1-2 Specifications
Type of appliance
Gas continuous flow water heater
Model number
MWH-180EX
Type of
Installation
Hot water supply
Exhaust system
Outdoor only
Wall hanging
End stop system
Forced combustion
Power supply
Appliance AC120V 60Hz Remote controller DC12V (digital)
Ignition system
Direct electronic ignition
Outer panel material
Pre-Painted Galvanized Steel Sheet
Hot water capacity
(water temp. +25°C rise)
0.58 ~ 5.8 GPM
Maximum hot water capacity
(54°F rise)
5.8 GPM
Maximum water supply pressure
150PSI (1.0MPa)
Recommended minimum water
supply pressure
15PSI (recommended 25-75 psi for maximum performance)
Minimum operational water flow
0.58GPM (2.2L/min)
Electrical comsumption
Normal 58W
Standby Main/Bath remote controller on 3.7 W
Anti-frost heater operation 84W
Connections
Gas
Water inlet
Hot water outlet
R3/4NPT
R3/4NPT
R3/4NPT
Exhaust temperature
below 480°F
Noise level
49dB
NOx
55ppm Max.
Safety devices
Flame failure - Flame rod, Over heat switch 210°F, Over heat limit 203°F
Thermal fuse for heat exchanger 363°F, Over current - fuse (5A)
Automatic frost protection, Combustion fan motor rpm check - PCB
Dimensions
Height 22 5/8" (575mm) Width 13 25/32" (350mm) Depth 6 1/2" (165mm)
Weight
40lbs. (18kg)
Temperrature Range
Main remote controller 96 - 140°F
Bath remote controller 96 - 140°F
Available Default Temperatures
(without remote controller)
110°F, 120°F, 140°F, 165°F
(set by Dip switch on PCB)
Gas
consumption
Natural Gas
Propane Gas
Maximum 180,000Btu/h
(52.8kW)
Maximum 180,000Btu/h
(52.8kW)
Minimum (reference)
20,000Btu/h (6.0kW)
Minimum (reference)
20,000Btu/h (6.0kW)
Remote controller (option)
CMR-2250 (P/N3748) Main control kitchen / laundry
YST-2250 (P/N3749) Bathroom control
Remote controller cable (option)
Nonpolarized two core cable
Clearance from combustibles
Top of heater 12" (30.5cm)
Front of heater 24" (61.0cm)
Sides of heater 6" (15.2cm)
Back of heater 0" (0cm)
Floor 12" (30.5cm)
Carton box dimensions
Height 30 1/8" (765mm) Width 15 15/16" (405mm) Depth 9 5/8" (245mm)
