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Installation & Operating Instructions
Installation & Operating Instructions
Installation & Operating Instructions
Models MP 20, MP 32, MP 40 & MP 50
Models MP 20, MP 32, MP 40 & MP 50
Models MP 20, MP 32, MP 40 & MP 50
INDIRECT WATER HEATERS
TO THE INSTALLER: This manual is
the property of the owner and
must be affixed near the water
heater for future reference.
TO THE OWNER: This water heater
should be inspected annually by a
qualied Service Agency.
Improper installa�on, adjustment, altera�on,
service or maintenance can cause injury or
property damage. Refer to this manual. For
assistance or addi�onal informa�on, consult
Do not store or use gasoline or other amma‐
ble vapors and liquids in the vicinity of this or
any other appliance. Installa�on and service
must be performed by a qualied Installer or
NEW JERSEY HEADQUARTERS • 439 MAIN ROAD, TOWACO, NJ 07082
PHONE: 800-221-1522 • WEBSITE: WWW.DHTNET. COM
Manufacturers and Designers Since 1938
INDIRECT WATER HEATERS
INDIRECT WATER HEATERS
TO THE INSTALLER: This manual is
TO THE INSTALLER: This manual is
the property of the owner and
the property of the owner and
must be affixed near the water
must be affixed near the water
heater for future reference.
heater for future reference.
TO THE OWNER: This water heater
TO THE OWNER: This water heater
should be inspected annually by a
should be inspected annually by a
qualied Service Agency.
qualied Service Agency.
WARNING
WARNING
Improper installa�on, adjustment, altera�on,
Improper installa�on, adjustment, altera�on,
service or maintenance can cause injury or
service or maintenance can cause injury or
property damage. Refer to this manual. For
property damage. Refer to this manual. For
assistance or addi�onal informa�on, consult
assistance or addi�onal informa�on, consult
a qualied Installer or Service Agency.
a qualied Installer or Service Agency.
a qualied Installer or Service Agency.
FOR YOUR
FOR YOUR
SAFETY
SAFETY
Do not store or use gasoline or other amma‐
Do not store or use gasoline or other amma‐
ble vapors and liquids in the vicinity of this or
ble vapors and liquids in the vicinity of this or
any other appliance. Installa�on and service
any other appliance. Installa�on and service
must be performed by a qualied Installer or
must be performed by a qualied Installer or
Service Agency.
Service Agency.
Service Agency.
WARNING
FOR YOUR
SAFETY
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Summary of Contents for Techtanium MP 20
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Page 1: Indirect Water Heaters
Installation & Operating Instructions Installation & Operating Instructions Installation & Operating Instructions Models MP 20, MP 32, MP 40 & MP 50 Models MP 20, MP 32, MP 40 & MP 50 Models MP 20, MP 32, MP 40 & MP 50 TO THE INSTALLER: This manual is ... -
Page 2: Table Of Contents
• Temperature limiting valves are available, see manual. NOTICE The Techtanium Indirect-fired water heater is deemed to be used in a "commercial setting" if at any time the unit is operated at a temperature over 150ºF. Refer to warranty for additional information. 2 ... -
Page 3: Product Selection
Ratings can be improved by increasing Techtanium thermostat setting and using a mixing valve to temper the hot water to the proper temperature. When temperatures greater than 119ºF are required, use a mixing valve at the outlet of the water heater or anti-scald fittings at point of use. - Page 4 Hot Water Outlet Cold Water Inlet Boiler Return Boiler Supply Tank Thermostat (located under cover) Drain Drain Valve Front of Tank Dimensions MP 20 MP 32 MP 40 MP 50 22.4" 22.4" 22.4" 22.4” 31.1" 39½" 47.9" 56¾" 27.6" 36"...
- Page 5 Pressure Drop Table Primary Flow Rate Model Number Unit 5 GPM 8 GPM 12 GPM MP 20 / hd MP 32 / hd MP 40 / hd MP 50 / hd Pressure Drop Graph Pressure Drop Graph 10.0 MP 20...
- Page 6 Performance Data MP 20 Con nuous Draw Ra ngs Based Upon Boiler’s Ability to Maintain 180º F Model MP 20 Circulator Flow GPM 5 5 8 8 12 12 DHW Temperature 120ºF 140ºF 120ºF 140ºF 120ºF 140ºF 45,000 76 56 76 56 Boiler 60,000 95 69 95 69 75,000 ...
- Page 7 Performance Data MP 40 Con nuous Draw Ra ngs Based Upon Boiler’s Ability to Maintain 180º F Model MP 40 Circulator Flow GPM 5 5 8 8 12 12 DHW Temperature 120ºF 140ºF 120ºF 140ºF 120ºF 140ºF 45,000 110 82 110 82 Boiler 60,000 138 101 138 101 75,000 166 ...
- Page 8 IV Installation & Piping The Loca on of the Techtanium heater: Locate the heater so that there is easy access to the control, piping, valves, drain and heater for future servicing and maintenance. The heater is to be kept in an area where it is not exposed to freezing tem‐ peratures. Also, the heater must be located in an area where a leak (eg. from the piping or fi ngs, from any tem‐ perature and relief valve discharge, or from the tank itself), will not cause personal harm or dam‐ age the surrounding area. The tank should be installed in an area with a floor drain or in a pan suitable for water heaters. Read the Installa on and Opera ng Instruc ons manual thoroughly. Follow recommended piping and wiring diagrams. Upon comple ng installa on, fill the tank with water. While filling it leave a hot water faucet open un l a steady stream of water is flowing. Then, shut the faucet and check for any leaks throughout the en re system. The Tank should be installed in an area with a floor drain or in a pan suitable for water heaters. DHT will not be held liable for any damages caused by water leakage. The floor or area where the tank is installed must be capable of suppor ng the tank when filled with water. (Refer to the Specifica ons Table on the page 3) FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
- Page 9 Flow Specifications Flow Specifications Recommended Heat Exchanger Domes c Water Model Number Flow Rate Pressure Drop ( . hd.) Connec on Sizes MP‐20 5 GPM 1.2 3/4” MP‐32 8 GPM 3.8 3/4” MP‐40 12 GPM 7.6 3/4” MP‐50 12 GPM 8.8 3/4” Friction Loss per 100’ of Tubing (psi) Tubing Type Flow Rate 10 GPM Flow Rate 15 GPM Type K ...
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Page 10: Installation/Piping
IV Installation/Piping IV Installation/Piping IV Installation/Piping Legend Legend Legend (cont’d) (cont’d) (cont’d) A Ball Valve—Typical A Ball Valve—Typical A Ball Valve—Typical B Dielectric Union—Suggested B Dielectric Union—Suggested B Dielectric Union—Suggested C Temperature & Pressure Relief Valve C Temperature & Pressure Relief Valve C Temperature & Pressure Relief Valve D Heat Trap Loop—Suggested D Heat Trap Loop—Suggested D Heat Trap Loop—Suggested E Thermosta�c Mixing Valve –Suggested E Thermosta�c Mixing Valve –Suggested ... -
Page 11: Vwiring
�onal, State and local codes. Adhere to the Na‐ (open). �onal Electric Code ‐ ANSI/NFPA 70‐1990 in the absence of any other codes. The aquastat should be �ed into the boiler sys‐ Power must be shut off before installing or servic‐ tem and controls. When the tank calls for heat the ing the heater. A separate shut off switch should aquastat contacts close and signal the boiler con‐ be installed to support future servicing or an trols, allowing the boiler to maintain temperature emergency shutdown. The en�re hea�ng system and proper opera�on of the tank circulator. should have its own designated electrical circuit. DHT recommends the use of a priority control to The Techtanium heater operates in much the help the boiler maintain desired temperature and same way as an addi�onal hea�ng zone, either sa�sfy the tank's BTU requirements. u�lizing the same circulator as household hea�ng or its own circulator. The heater temperature is The Techtanium heater recovery ra�ngs are based maintained by the use of an immersion type aq‐ on the boiler's ability to maintain 180 degrees uastat. The aquastat is installed into the im‐ Fahrenheit. It is important that the installer, mersion well on the heater. plumber or hea�ng technician responsible for installing the heater, make certain that the The aquastat operates in much the same way as a boiler capacity (BTU) is adequate to sa�sfy the thermostat. When the temperature falls inside heater's BTU requirements. ... - Page 12 Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring and Thermostat Setting Wiring: The thermostat is rated for 15 amps. Follow the wiring instruc�ons in sec�on V pages Wiring: The thermostat is rated for 15 amps. Follow the wiring instruc�ons in sec�on V pages Wiring: The thermostat is rated for 15 amps.
- Page 13 Tankless Coil Boiler Application - Priority Figure 3a. Opera�on: Jumper Placement: When any thermostat calls for REMOVE the jumper heat, the boiler is given a signal to start. The between terminals ZC and ZR. Connect termi‐ appropriate circulator is energized only when nal ZC to ZC terminal on the aquastat control. the boiler temperature is above the low limit. Connect terminal ZR to ZR terminal on the aquastat control. Conrm polarity is con‐ Priority Opera�on: sistent between the boiler aquastat and the When Zone 6 is switching relay. switched to the priority se�ng and is ac�vat‐ ed, all other zones will stop opera�on un�l Power input: Connect 120 volt as power zone 6 is sa�sed. When Zone 6 is not switched to priority, all zones will operate input to terminals N and H. Neutral wire to independently. terminal N. Hot wire to terminal H. 13 ...
- Page 14 Cold Start Boiler Application - Priority Figure 3b. Opera�on: Jumper Placement: When any thermostat calls for The jumper should heat, appropriate circulator is energized and be placed between terminals ZC and ZR. Con‐ the isolated end switch (X‐X) will start the nect the isolated end switch to the aquastat boiler. on the boiler Priority Opera�on: Power input: When Zone 6 is Connect 120 volt as power switched to the priority se�ng and is ac�vat‐ input to terminals N and H. Neutral wire to ed, all other zones will stop opera�on un�l terminal N. Hot wire to terminal H. zone 6 is sa�sed. When Zone 6 is not switched to priority, all zones will operate independently. 14 ...
- Page 15 Wiring Diagrams 15 ...
- Page 16 Wiring Diagrams 16 ...
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Page 17: Maintenance
VI Maintenance To ensure efficient and safe opera on, DHT recom‐ Magnesium ‐ An ‐Corrosion Anodes (No longer than mends the servicing of the heater by a competent ser‐ every 12 months) vice technician. Removal of the anodes: Lime or Sediment Buildup (Every 6 months) To reduce the buildup of lime or sediment it is recom‐ 1. Shut off all power to the heater. mended that the tank be flushed every six months. 2. Close the domes c cold water supply valve. 1. Drain the tank through the drain valve at the bo om of the tank un l the water is clear. 3. Open the household hot water taps. 2. Inspect the tank for any deposits of lime or sediment. 4. A ach a hose to the drain valve located at the bo om of the heater and allow the heater to drain. 3. Remove lime, scale or deposits using care not to damage the tank lining. 5. Unscrew the anodes. EXAMINE THE ANODES AND REPLACE IF THEY SHOW Temperature & Pressure Relief Valve (Every 12 SIGNS OF DETERIORATION. ... -
Page 18: Warranty
USAGE - 7 YEARS The Warranties listed in this section shall apply to Diversified Heat Transfer Techtanium™ indirect-fired water heaters used in a residential setting by original purchasers only. A “residential setting” as used herein shall mean usage either (a) in a single family... - Page 19 These warranties are void and shall not apply under the following circumstances: 1. The Techtanium™ water heater was not installed or repaired by a heating contractor whose principal occupation is the sale, installation and repair of plumbing, heating and/or air conditioning equipment.
- Page 20 INDIRECT WATER HEATERS Models MP 20, MP 32, MP 40, MP 50 Installation & Operating Instructions Installation & Operating Instructions Models MP 20, MP 32, MP 40 & MP 50 Models MP 20, MP 32, MP 40 & MP 50 WARNING WARNING...