Munchkin 399M manual Mixing valve

Page 23

PIPING

Standard Munchkin boiler

Preferred piping (zoning with valves) Space heating mode

Drawing 2A

 

zone valves

 

make-up water

P2

 

 

 

closely

 

differential

spaced

 

pressure

tees

 

bypass

 

 

valve

purging

 

V1

valves

 

OFF

 

 

 

 

anti-scald

 

 

mixing valve

 

 

cold

 

 

water

 

P1

 

 

T/P

 

 

Munchkin boiler

Super Stor

 

indirect DHW tank

 

 

NOTES:

 

 

1.This drawing is meant to show system piping concept only.

Installer is responsible for all equipment & detailing required by local codes.

2.Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself.

3.The minimum pipe size for connecting a Super Stor water heater is 1 inch.

4.The minimum pipe size for connecting a Munchkin boiler is 1.25 inches.

5.All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves.

6.The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119˚F.

7.Install a minimum of 12 diameters of straight pipe upstream of all circulators.

8.A purging valve may be used in lieu of the ball valve / hose bib combination shown.

9.A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

Fig. 5-5

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Contents What to do if YOU Smell GAS Munchkin High Efficiency 399M Commercial BoilerUsing this Manual Using this ManualTable of Contents HOW IT Operates Munchkin Ratings and DimensionsPart 1. General Information General InformationDimensions PRE-INSTALLATION Requirements Electrical Connection Part 2. ElectricalGeneral Information / Electrical Pressure Relief ValveElectrical Electrical / GAS Connection Part 3. GAS ConnectionGAS Table GAS ConnectionGAS Connection GAS PipingMunchkin Burnertech GAS Valve Combustion SettingsVenting the Munchkin in 4 or 6 Plastic Pipe Part 4. VentingVenting Approved Venting MaterialsVenting Important Note Fittings or Piping Equivalent Feet Longer Vent Runs Using a Combination 4 to 6 PipeHeater Removal from a Common Vent System Diagrams for Sidewall VentingDiagram for Vertical Venting Hydronic Piping with Circulators or Zone Valves Part 5. PipingVenting / Piping Condensate RequirementsCirculator Sizing PipingFill and Purge Heating System Piping Illustrations Piping Symbol LegendZone valves Make-up water Zone valves Mixing valve Zone valves Make-up water Piping Space heating zone circuit Zone Circulators Make-up water PB1 PB2 PB1 PB2 Lighting Instructions Part 6. START-UP ProceduresSTART-UP Procedures Items to be Checked Before Lighting the MunchkinOperating Instructions Adjusting the Temperature on the Munchkin DisplayTo Turn OFF GAS to Appliance Test ModeStatus Menu Sequence of Operation START-UP Procedures / ServicingMunchkin Temporary Fault Condition Part 7. ServicingServicing Munchkin Fault Requiring Manual ResetServicing Remedy Call Factory for further assistance Resistance Tables Maintenance Part 8. MaintenanceLeaks Munchkin Controller Control Wiring LayoutMaintenance Maintenance Page Page Heat Transfer Products, Inc LP-121 REV /20/04