Products
Heat Miser

Heat Miser

The Heat Miser is an Instantaneous Steam to Water Heater which produces hot water from steam. The Watson McDaniel fully-assembled Heat Miser eliminates the need for large hot water storage tanks and saves significant energy which is required for large standing tanks of hot water.

Common Applications: Hospitals, Schools & Universities, Hotels, Process Washdown Stations, Residential Apartment Buildings or any other facility with an existing steam boiler.

The Heat Miser is an Instantaneous Steam to Water Heater which produces hot water from steam. Our Heat miser eliminates the need for large hot water storage tanks and saves significant energy which is required for large standing tanks of hot water.

ModelInlet/Outlet (Water)GPM (Water)DimensionsInlet (Steam)Outlet (Condensate)Steam Load (lbs/hr)@100°F Temp. Rise
1P203"4046"(L) x 30"(W) x 67"(H)2"1 1/2"
3P283"10054"(L) x 34"(W) x 92"(H)3"2"
1P103"2046"(L) x 30"(W) x 67"(H)1 1/2"1 1/2"
2P283"6046"(L) x 30"(W) x 73"(H)2 1/2"2"
3P203"8054"(L) x 34"(W) x 92"(H)3"2"
Product Overview
The Heat Miser is an Instantaneous Steam to Water Heater which produces hot water from steam. The Watson McDaniel fully-assembled Heat Miser eliminates the need for large hot water storage tanks and saves significant energy which is required for large standing tanks of hot water.

Common Applications: Hospitals, Schools & Universities, Hotels, Process Washdown Stations, Residential Apartment Buildings or any other facility with an existing steam boiler.

Old Hot Water System Negatives
• Takes up excessive floor space
• Stagnating hot water
• Danger of Legionella Growth
• Corrosion of tanks
• Significant radiant heat loss

New Heat Miser System
• Small footprint (typical floor space of 14ft2)
• Stainless Steel waterside components
• Simple maintenance and reduced overall costs
• Efficient plate & frame heat exchanger maximizes turbulent flow for instantaneous hot water on demand
Features
System Benefits
• Meets the rigorous demands of domestic water heating
• Accommodates extreme load fluctuations without the need or storage tanks
• Accurate control of outlet water temperature for many systems to +/- 2ºF, and +/- 8ºF for wide and sudden load fluctuations
• High-efficiency Plate & Frame Heat Exchanger optimized for use with low pressure steam and offers typical flow rates up to 300 GPM, with higher flow rate designs available
• Integral Control Panel included for ease of operation and system feedback
• Electric and Pneumatic Control Valves available for precise steam control
• Excellent for washdown stations

The Watson McDaniel Difference
• ASME qualified welders and certifications
• ASME U and UM Stamp availability on appropriate components
• Complete assembly and pressure testing prior to shipment
• Better control of design, cost and quality by avoiding 3rd party fabricators
• Unparalleled turn-around and deliveries with many units available for shipment within days

Standard Auxiliary Items
• Steam and Condensate Inlet Y-Strainers
• Stainless Steel Recirculation Pump
• Over-temperature Protection – Solenoid-actuated Cold Water Injection
• Steam Inlet Pressure Gauge
• Stainless Steel RTD Electronic Temperature Sensor
• Stainless Steel Waterside Piping with Safety Valve
How It Works
Heat Exchanger
• High-efficiency Plate & Frame Counterflow Type
• Single or Double Wall 316 Stainless Steel Plates
• Steam-rated EPDM gaskets
• Plates may easily be added, removed or replaced on site

Control Panel

• NEMA 4X Electrical Enclosure
• Electronic PID Controller with Full Auto-Tune Capability
• Selector Switches – Controller On/Off and Pump On/Off
• All components to be pre-wired for 120V service

Control Valve

• Cast Iron, Bronze or Steel Globe Body
• Fail Closed Pneumatic Actuator
• Electro-Pneumatic Positioner
• Single Seat, Equal Percentage, Stainless Steel Trim
Dimension and Weight
Options
Condensate Drainage Options
Float & Thermostatic Steam Trap (gravity drainage option)
• All Stainless Steel Internals
• Body Material options include Ductile Iron, Carbon Steel and Stainless Steel

Pump-Trap Combination (pumped drainage option)
• Patented Snap-Assure mechanism with stainless steel wear parts
• Ductile Iron Tank
• Gauge Glass
• Motive PRV, Drip Trap, and Motive and Vent Piping

Common Optional Items
• High-limit Steam Isolation Package including dedicated sensor and actuated ball valve
• HDP Pressure Reducing Valve for reducing inlet steam supply pressure to the control valve