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Finned copper tube gas boilers & water heaters – Boiler Manual

21

F

F

 Never use an open fl 

ame to test for gas 

leaks. Always use an approved leak detection method. 

Failure to comply with this warning can cause extensive 

property damage, severe personal injury or death!

Whenever the gas supply piping is pressure tested the boiler/water 

heater gas controls must be protected. If the test pressure is equal 
to, or less than 

1/2 psig

3.5 kPa

 isolate the boiler/water heater 

by closing it’s manual shut off  valve, see Figure 14. If the test pressure 
is greater than, or equal to 

1/2 psig

3.5 kPa

, disconnect the boiler/

water heater and its individual shut-off  valve.

ELECTRICAL WIRING 

Electrical Power Connections

  Label all wires prior to disconnection when servicing 

controls. Wiring errors can cause improper and 
dangerous operation! Verify proper operation aft er 
servicing.

  Au moment de l’entretien des commandes, étiquetez 

tous les fi ls avant de les débrancher. Des erreurs de 
câblage peuvent entraîner un fonctionnement inadé-
quat et dangereux. S’assurer que l’appareil fonctionne 
adéquatement une fois l’entretirn terminé.

Th e electrical connections to this boiler/water heater must be made 

in accordance with all applicable local codes and the latest revision 
of the National Electrical Code, ANSI /NFPA-70. Installation should 
also conform with CSA C22.1 Canadian Electrical Code Part I if 
installed in Canada. 

Install a separate 120 volt 15 amp or 20 amp circuit breaker for the 

boiler/water heater and pump, see Table 11. A properly rated shut-
off  switch should be located at the boiler/water heater. Th e boiler/

water heater must be grounded in accordance with the authority 

having jurisdiction, or if none, the latest revision of the National 

Electrical Code, ANSI/NFPA-70.

Table 11 

Futera III Electrical Requirements

Recommended

Futera III

Circuit Breaker

*Running

Model

(Amps)

Amps

MB/MW 500

15

3.9

MB/MW 750 - 1000

15

6.0

MB/MW 1250 - 2000

20

11.4

*Use separate circuit breaker that is properly sized for pump and
pump contactor.

Line voltage fi eld wiring of any controls or other devices must 

conform to the temperature limitation of type TEW wire at 

95°F

35°C

 above room temperature. Use copper conductors with a 

minimum size of #14 awg. Use appropriate wiring materials for 
units installed oudoors. Th e 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 connections and boiler full load amperage (FLA).

GENERAL OPERATION

Before proceeding read and fully understand the 

instructions contained in this manual. Do not att empt 
to operate this boiler/water heater if it has not been 
installed in accordance with the guidelines set forth 
in this manual. Failure to comply with this warning 
can result in extensive property damage, severe per-
sonal injury or death!

Should overheating occur or the gas supply fail to shut off , turn off  
the manual gas control valve to the appliance.  Do not interrupt 
water fl ow through the boiler/water heater.

En cas de surchauff e ou si l’alimentation en gaz ne s’arrête pas, fermez 

manuellement le robinet d’arrêt de l’admission de gaz.

Hydronic Heating Boilers 

Open the make-up water valve and slowly fi ll the boiler and all of 
the radiation with water. Ensure that all bleed and drain valves are 

closed.

Adjust the make-up water pressure regulator so a minimum

12 psig

82.7 kPa

 system pressure is maintained at the highest point in the 

system piping. If a make-up water pump is used adjust it to maintain 
a minimum 

12 psig

82.7 kPa

 system pressure.

Open the system bleed and drain valves, one at a time, to purge 
the air trapped in the heating system piping.

With the boiler off , run the system pump for at least 30 minutes 

and bleed the system piping using the bleed valves. If strainers are 
used in the system piping, the make- up water valve should be closed 
and the strainers checked and cleaned.

Th e system expansion tank should be checked to ensure that the 

correct water level in the tank is maintained. Th e tank should be 
less than half full of water with the system full and adjusted to the 
correct operating pressure.

Start the boiler as described in the “OPERA

 TING INSTRUCTIONS” 

section. Run the boiler for at least an hour.  Th e system pump(s) 
and all radiation units must be operated during this time. Ensure 
that the make-up water valve is open.

Shut the boiler off  and open the bleed valves to purge the air trapped 
in the heating system piping. Close the make-up water valve and 
check and clean the strainers and make-up water pressure reducing 

valve.

Open the make-up water valve and adjust the system pressure if 

necessary. Th e system should be checked and bled aft er three days 
of operation.

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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