PB MI85 Series Installation, Operation & Maintenance Manual Download Page 1 | Manualshive

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PB MI85 Series Installation, Operation & Maintenance Manual Download Page 1

MI85

™

Boilers

Series

Gas

I n s t a l l a t i o n ,
O p e r a t i o n &
M a i n t e n a n c e
M a n u a l

1
2
3
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Summary of Contents for MI85 Series

Page 1: ...MI85 Boilers Series Gas Installation Operation Maintenance Manual...

Page 2: ...6 ELECTRICAL 16 A WIRING 16 B ZONED SYSTEM WIRING 16 C CONTROLS 16 D SEQUENCE OF OPERATION 19 7 START UP PROCEDURES 21 A COMPLETING THE INSTALLATION 21 B CONTROL DESCRIPTIONS 24 C ADJUSTMENT OF GAS PR...

Page 3: ...supplement the instructions and make special notice of potential hazards These categories mean in the judgment of PB Heat LLC Indicates special attention is needed but not directly related to potenti...

Page 4: ...e air infiltration rate is known to be between 0 6 and 0 4 air changes per hour If the air infiltration rate is known to be below 0 4 then the Known Air Infiltration Rate Method must be used If the bu...

Page 5: ...ng with additional spaces that have a total minimum free area of 2 in2 per 1000 Btu hr 44 cm2 per 1000 W of total input rating of all equipment See Figure 1 2 for an illustration of this arrangement 4...

Page 6: ...vailable indoor air provided a The size and location of the indoor openings comply with Subsection 3 b The outdoor openings are to be located in accordance with Subsection 4 c The size of the outdoor...

Page 7: ...appliances c Ducts shall serve a single space d Ducts shall not serve both upper and lower combustion air openings where both such openings are used The separation between ducts serving upper and low...

Page 8: ...installation position before removing crate 3 If using combustible floor pan position pan on foundation or flooring 4 Separate the wood shipping pallet from the boiler base by removing two 2 hold down...

Page 9: ...of the left section Pipe the return to the tee Pipe the drain valve nipples and tee to the 1 1 4 NPT return tapping as shown in Figure 3 1 3 Supply Piping Pipe the supply to the 1 1 2 NPT supply tapp...

Page 10: ...f the boiler water during the cooling cycle 8 If this boiler is installed above radiation level provide a low water cutoff device either as a part of the boiler or at the time of boiler installation B...

Page 11: ...system layouts 2 Run each zone pipe down then up to zone to prevent air accumulation in piping 3 If required provide means to isolate and drain each zone separately WATER PIPING AND CONTROLS Figure 3...

Page 12: ...s that must be freeze protected 1 Glycol in hydronic applications is specially formulated for this purpose It includes inhibitors which prevent the glycol from attacking metallic system components Mak...

Page 13: ...ommon vent 7 Install vent pipe to slope upward at least 1 4 per lineal foot 21 mm per meter between the draft hood outlet and the chimney Installer le tuyau d vent avec une pente ascendante minimum de...

Page 14: ...n 4 The vent damper shall be mounted directly onto the round draft hood outlet vent connector on top of the boiler See the Vent Damper Installation Instructions below C VENT DAMPER INSTALLATION GENERA...

Page 15: ...tres de foyers d Place in operation the appliance being inspected Follow the lighting instructions Adjust thermostat so appliance will operate continuously Mettre en service l appareil inspecter Suivr...

Page 16: ...ted location is shown in Figure 5 1 7 Check piping for leaks Use an approved gas detector a non corrosive leak detection fluid or other leak detection method If leaks are found turn off all gas flow a...

Page 17: ...00 45 3 20 6 1 190 5 4 350 9 9 730 20 7 1100 31 1 30 9 1 152 4 3 285 8 1 590 16 7 890 25 2 40 12 2 130 3 7 245 6 9 500 14 2 760 21 5 50 15 2 115 3 3 215 6 1 440 12 5 670 19 0 60 18 3 105 3 0 195 5 5 4...

Page 18: ...f the various controls 3 This boiler is supplied with safety devices in addition to the limit For a description of these devices and how they work to ensure the safe operation of the boiler see Sectio...

Page 19: ...17 ELECTRICAL Figure 6 2 Wiring and Connection Diagram Intermittent Ignition L8148E Control Figure 6 3 Wiring Diagram Intermittent Ignition 7600B Control...

Page 20: ...18 ELECTRICAL Figure 6 4 Wiring Diagram Intermittent Ignition 3200 Control...

Page 21: ...19 Figure 6 5 Intermittent Ignition System Operating Sequence ELECTRICAL...

Page 22: ...20 ELECTRICAL Figure 6 6 Zone Wiring with Zone Valves Figure 6 7 Zone Wiring with Circulators...

Page 23: ...drain the system and repair as required 8 Connect a manometer to the gas valve on the valve outlet gas manifold Use the 1 8 NPT tapping provided 9 Confirm that the gas supply pressure to the boiler is...

Page 24: ...22 START UP PROCEDURES Figure 7 3 Operating Instructions...

Page 25: ...23 Figure 7 4 Operating Instructions START UP PROCEDURES...

Page 26: ...gas pressure regulator Replace the cap screw when adjustment is complete 3 In no case should the final manifold pressure vary more than 0 3 inches water column 0 07 kPa from the above specified pressu...

Page 27: ...rating correctly If either of these components causes high pressure in the system the boiler relief valve will weep or open allowing fresh water to enter the system 6 Do not allow the system controls...

Page 28: ...ing occur or the gas supply fail to shut off do not turn off or disconnect the electrical supply to the pump This may aggravate the problem and increase the likelihood of boiler damage Instead shut of...

Page 29: ...ply gas pressure 5 Contact gas supplier if natural gas 6 Excessive downdraft or draft problems in boiler room 6 Check air supply ventilation and venting system Delayed ignition 1 Insufficient pilot fl...

Page 30: ...OES INTO LOCKOUT OR RETRY DELAY RESET THE CALL FOR HEAT CHECK CONTINUITY OF IGNITION CABLE AND GROUND WIRE CLEAN FLAME ROD CHECK ELECTRICAL CONNECTIONS BETWEEN FLAME ROD AND MODULE CHECK FOR CRACKED C...

Page 31: ...ovide adequate ventilation Wear a NIOSH MSHA approved respirator Wear long sleeved loose fitting clothing and gloves to prevent skin contact Wear eye goggles Minimize airborne dust prior to handling a...

Page 32: ...he safety relief valve Boiler temperature should never be higher than 250 F 121 C 4 Check for water leaks in boiler and system piping 5 Smell around the appliance area for gas If you smell gas follow...

Page 33: ...rner flame See Figures 9 1 and 9 2 The pilot should provide a steady flame enveloping 3 8 to 1 2 1 cm to 1 2 cm of the flame sensor If required adjust the pilot as stated in the gas valve manufacturer...

Page 34: ...E Vent Connector Size F Length Depth A Width B To Floor C inch mm inch mm inch mm inch mm inch mm inch mm MI85 03 26 5 8 676 12 1 2 318 31 3 8 797 6 1 4 159 20 13 16 529 4 101 MI85 04 26 5 8 676 15 7...

Page 35: ...o include boiler model number and serial number when ordering parts 11 REPAIR PARTS Table 11 1 Base Combustible Floor Pan Description Quantity Required Stock Code 1 Base Assembly MI85 03 7800 Base Ass...

Page 36: ...34 REPAIR PARTS Figure 11 2 Manifold Figure 11 3 Gas Valve and Pilot Intermittent Ignition...

Page 37: ...ifold MI85 03 50978 Gas Manifold MI85 04 50979 Gas Manifold MI85 05 50980 Gas Manifold MI85 06 50981 8 Orifice Spud 50 Natural Gas MI85 03 4 X4014 50 Orifice Spud 50 Natural Gas MI85 04 6 X4014 50 Ori...

Page 38: ...36 Figure 11 4 Block Draft Hood Figure 11 5 Jacket REPAIR PARTS...

Page 39: ...06 90513 14 Flue Collector Blanket Seal specify length needed 50866 15 Flue Baffles MI85 03 2 51609 Flue Baffles MI85 04 3 51609 Flue Baffles MI85 05 4 51609 Flue Baffles MI85 06 5 51609 16 Jacket Ass...

Page 40: ...38 Figure 11 6 Controls Circulator Vent Damper REPAIR PARTS...

Page 41: ...model 24 Temperature Pressure Gauge 51324 25 Safety Relief Valve 30 PSI Conbraco 10 408 05 50501 Safety Relief Valve 50 PSI Watts 350 99950 26 Flame Roll Out Safety Shut Off Switch 51587 27 Blocked Ve...

Page 42: ...40 NOTES...

Page 43: ...is the property of the owner and must be affixed near the boiler for future reference TO THE OWNER This boiler should be inspected annually by a Qualified Service Agency MI8084 R1 3 16 5C Printed in...

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