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4/12 Copyright 2012 Mestek, Inc.

FTIII-I0M-HN-4

82-0300

Boiler  manual

Installation and operation 
instructions

Also read and follow:

HeatNet® Control Manual

  Th is manual is intended only for use by a qualifi ed heating installer/technician. Read and follow this manual, all supplements and related 

instructional information provided with the boiler. Install, start and service the boiler only in the sequence and methods given in these 

instructions. Failure to do so can result in severe personal injury, death or substantial property damage.

 

Do not use the boiler during construction.

 Construction dust and particulate, particularly drywall dust, will cause contamination 

of the burner, resulting in possible severe personal injury, death or substantial property damage.  Th e boiler can only be operated with 

a dust-free air supply. Follow the instruction manual procedures to duct air to the boiler air intake. If the boiler has been contaminated 

by operation with contaminated air, follow the instruction manual guidelines to clean, repair or replace the boiler if necessary.

 Affi  x these instructions near to the boiler. Instruct the building owner to retain the instructions for future use by a qualifi ed service 

technician, and to follow all guidelines in the User’s Information Manual.

Finned copper tube
Gas boilers (MB) &
Water heaters (MW)

Summary of Contents for FUTERA III Series

Page 1: ...construction Construction dust and particulate particularly drywall dust will cause contamination of the burner resulting in possible severe personal injury death or substantial property damage The b...

Page 2: ...vent this unit can cause excessive amounts of carbon monoxide resulting in severe personal injury or death DESIGNED AND TESTED ACCORDING TO A S M E BOILER AND PRESSURE VESSEL CODE SECTION IV FOR A MA...

Page 3: ...earance in mm in mm Top 6 153 30 762 Back 6 153 24 610 Left Side 6 153 12 306 Right Side 6 153 12 306 Front 6 153 30 762 2 An optimum site will be level central to the piping system close to a chimney...

Page 4: ...ning must be within 12 in 305 mm of but not less than 3 in 76 mm from the top of the enclosure The bottom opening must be within 12 in 305 mm of but not less than 3 in 76 mm from the bottom of the enc...

Page 5: ...tions must comply with CAN CGA B149 1 or 2 Installation Code Improper venting can result in excessive levels of carbon monoxide which can result in severe personal injury or death All vent systems mus...

Page 6: ...ion rated for 400 F 204 C Horizontal vent systems shall terminate at least 4 ft 1 2 m below 4 ft 1 2 mhorizontallyfromor1 ft 0 30 maboveanydoor window or gravity air inlet into any building It must no...

Page 7: ...single or multiple units exhaust and combustion air ter minals must be installed on the same plane outside wall in order to prevent pressure differences due to prevailing winds Incoldclimates double...

Page 8: ...s boilers water heaters Boiler Manual 8 F F Figure 3 Vertical Air Intake and Venting for a Direct Vent System Figure 4 Combination Direct Vent Systems 10 FT 3 1 m 4 FT 1 2 m 5 FT 1 5 m 1 5 FT 0 5 m 5...

Page 9: ...chimney system manufacturer s instructions must be followed Masonry chimneys when used must be lined with a metal liner certified for Category IV venting When more than one appliance is connected to t...

Page 10: ...rate of 1 4 in ft 21 mm m On masonry chimneys the connector must terminate flush with the inside of the chimney flue Figure 7 Fasten each single wall vent connection with at least 3 corrosion resista...

Page 11: ...ing system Scellertouteslesouverturesnonutilis esdusyst med vacuation b Visuallyinspecttheventingsystemforpropersizeand horizontal pitch and determine there is no blockage or restriction leakage corro...

Page 12: ...property damage Excessive water hardness causing scaling in the copper heat exchanger tubes is NOT covered under the manufacturer s warranty see Table 8 Excessive pitting and erosion of the internal...

Page 13: ...l expansion of the system must be considered when supporting the system A minimum system pressure of 12 psig 82 7 kPa must be maintained Heating Boiler Piping Connections Thesupplyandreturnconnections...

Page 14: ...ump An air scoop and automatic air vent must also be installed to eliminate air trapped in the system Primary Secondary Piping Boilersconnectedtoheatingsystemsusingzonevalves zonepumps or systems that...

Page 15: ...low through unit 2 Boiler pump sized to boiler design flow requirements 3 All boilers furnished with factory mounted outlet water temperature gauge 4 Boiler pump purging required Use terminals supplie...

Page 16: ...Valve Gate Valve Globe Valve Balance Valve Backflow Prevention Device H 15 Rev 4 NOTES 1 Boiler circuit piping must be large enough to handle maximum flow through unit 2 Boiler pump sized to boiler de...

Page 17: ...ess between 8 and 18 and by maintaining the pH between 5 and 9 Follow the conditions listed under NORMAL in the table In some areas of the country additional precautions must be observed due to unusua...

Page 18: ...Fi d b b il h B il M l Finned copper tube gas boilers water heaters Boiler Manual 18 F F Table 8A Futera III Heat Exchanger Selection Graph Table 8B Futera III Pumping Performance Requirement...

Page 19: ...ing selection 6 Common piping must be sized for maximum combined heater flow 7 Hot water tanks should be equipped with a combination temperature pressure relief valve 8 MA Code requires an 1 8 hole in...

Page 20: ...nt trap at the bottom of the vertical section of the gas supply pipe upstream of the gas controls A ground joint union should be installed between the boiler gas controls and the supply piping Each of...

Page 21: ...ing materials for units installed oudoors The wire size must be compatible with the total amp draw of the circuit Refer to the wiring diagram supplied with the boiler water heater for proper wiring co...

Page 22: ...has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water N utilisez pas...

Page 23: ...ow fire O2 CO2 can be adjusted in the field by opening the low fire adjustment door located on the forward facing side ofthemaingasvalve seeFigure14 a Insertinganallenwrench and rotating the allen scr...

Page 24: ...setting 2 Turn off all electric power to the boiler if service is to be performed 3 Close the manual main and pilot gas shut off valves COMMENT COUPER L ADMISSION DE GAZ DE L APAREIL 1 R glez le ther...

Page 25: ...easure pressure when the boiler is firing at full rate Low gas pressure could indicate undersized gas line or insufficient gas supply Static and operating gas pressure required at the gas valve inlet...

Page 26: ...Fi d b b il h B il M l Finned copper tube gas boilers water heaters Boiler Manual 26 F F RBI FIELD WIRING TO HEATNET BOARD Figure 17...

Page 27: ...ethods in which a 4 20mA signal can be used to control HeatNet equipped boilers Method 1 A 4 20mA signal can be used to directly modulate each boiler from a remote panel or building management system...

Page 28: ...on The display will also list faults should the unit fail to operate An explanation of each status message and fault can be located in HeatNet Control Manual under status screen fault display section...

Page 29: ...ck The interlock is located on J11B SPARE 4 FAULT SYSTEM SET 160 F INTERLOCK SPARE 4 FLOW SWITCH ERROR Once the FIII series boiler receives a call for heat it closes the circulator pump relay It then...

Page 30: ...AULT SYSTEM SET 160 F OPEN OUTSIDE SENSOR SHORTED SENSOR If the shorted sensor fault is displayed thesensorinthepositionreportedwasoriginallydetected but has since shorted The boiler will shut down on...

Page 31: ...tion Green deposits indicate condensation due to low return water temperatures In either case the heat exchanger must be cleaned thoroughly and the problem resolved before the boiler water heater is r...

Page 32: ...s contact a qualified service technician to have it inspected NEVER try to clean or repair the relief valve If the valve fails to operate properly have it replaced 5 Theaquastathighlimitcontrolsthemax...

Page 33: ...11A J11B to identify which interlock has tripped Reset the Interlock or check for disconnected wiring or shorts The Air Pressure from UV Sensor interlock if displayed will allow the boiler to function...

Page 34: ...Fi d b b il h B il M l Finned copper tube gas boilers water heaters Boiler Manual 34 F F Figure 19 Exploded View REPAIR PARTS...

Page 35: ...Fi d b b il h B il M l Finned copper tube gas boilers water heaters Boiler Manual 35 F F REPAIR PARTS CONTINUED...

Page 36: ...rt CSD 1 11 0354 1 1 1 1 1 1 1 NS Flange 1 Outlet 11 0228 1 1 1 1 NS Flange 1 Inlet 11 0231 1 1 1 1 NS Flange 1 1 4 11 0213 2 NS Flange 1 1 2 Inlet 11 0214 2 2 NS Flange 1 1 2 Outlet 11 0229 1 1 1 NS...

Page 37: ...1 1 1 NS Air Filter 09 0483 1 1 1 09 0484 1 1 1 1 45 Tridicator 30 60 psi 13 0308 1 1 1 1 1 1 1 Tridicator 75 160 psi 13 0305 1 1 1 1 1 1 1 46 Heat Exchanger Assembly Copper Cast Iron prior to 0209 mu...

Page 38: ...7 1 1 1 1 1 1 1 52 Spark Generator Q652B 16 0008 1 1 1 1 1 1 1 53 Flame Safeguard RM78957C 16 0024R 1 1 1 1 1 1 1 NS Keyboard Display Module S7800A 16 0010 1 1 1 1 1 1 1 54 Main Board HeatNet green 16...

Page 39: ...1 70 2567 1 1 1 1 84 Electrode 16 0335 1 1 1 1 1 1 1 NS Spark Rod O ring 06 0008 1 1 1 1 1 1 1 NS Silicone 66 0151 1 1 1 1 1 1 1 NS Silicone Tubing 66 0051 2 2 2 2 2 2 2 NS Vent Termination Hood 5 09...

Page 40: ...ttom of the electrical panel Disable any external call for heat and toggle the remote local switch to REMOTE 1 Toggle the LOW FIRE switch to cycle the boiler then hold at trial for pilot ignition 2 Se...

Page 41: ...THE DELTA T BETWEEN THE HEATER INLET AND OUTLET IS CRITICAL TO PROPER FLOW BEFORE YOU LEAVE THE JOBSITE YOU MUST RECORD THE DELTA T THIS READING SHOULD NOT EXCEED 35 F 19 4 C NOR BE LOWER THAN 20 F 11...

Page 42: ...terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRU...

Page 43: ...bes caused by high water velocity through the tubes and is not covered by the manufacturer s warranty See Installation Instructions for proper pump performance Chemical corrosion no corrosive chemical...

Page 44: ...t 2012 Mestek Inc 260 North Elm Street 7555 Tranmere Drive Westfield MA 01085 Mississauga Ontario L5S 1L4 Canada Phone 413 568 9571 Phone 905 670 5888 Fax 413 568 9613 Fax 905 670 5782 www rbiwaterhea...

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