Munchkin Gas-Fired Hot Water Circulating Heater Check for GAS Leaks, Purge AIR from Water System

Page 53

GAS-FIRED HEATER Installation Manual

PART 11. START-UP PREPARATION (CONTINUED)

 

WARNING

 

 

 

one at a time, beginning with lowest

 

 

 

 

floor. Close vent when water squirts out.

 

 

 

 

 

 

Eliminate all system leaks. Continual fresh

 

 

 

Repeat with remaining vents.

make-up water will reduce heater life. Minerals

 

 

j.

Refill to correct pressure.

can build up in the heat exchanger, reducing

 

 

 

 

 

 

heat transfer, overheating heat exchanger, and

 

 

E. CHECK FOR GAS LEAKS

causing heat exchanger failure.

 

 

 

 

 

 

 

 

 

WARNING

 

 

 

 

 

 

 

5. The system may have residual substances

 

 

 

 

Before starting the Munchkin Contender, and

that could affect water chemistry. After the

 

system has been filled and leak tested, verify

 

during initial operation, smell near the floor and

water pH and chlorine concentrations are

 

around the heater for gas odorant or any

acceptable.

 

 

 

unusual odor. Remove heater front door and

 

 

 

 

 

smell interior of heater enclosure. Do not

 

 

CAUTION

 

 

proceed with startup if there is any indication of

 

 

 

 

a gas leak. Repair any leak at once.

It is important that you purge the system of air

 

 

 

 

 

 

 

 

 

 

 

 

 

to avoid damage to the heater.

 

 

 

 

 

 

 

 

 

WARNING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D. PURGE AIR FROM WATER SYSTEM

 

 

Propane heater only — Your propane supplier

1. Purge air from system:

 

mixes an odorant with the propane to make its

 

presence detectable. In some instances, the

a.

Connect a hose to the purge valve and

 

 

odorant can fade, and the gas may no longer

 

route hose to an area where water can

 

have an odor. Before startup (and periodically

 

drain and be seen.

 

thereafter), have the propane supplier verify the

b.

Close the heater or system isolation valve

 

correct odorant level in the gas.

 

between the purge valve and fill

 

 

 

 

 

 

 

 

 

 

 

 

connection to the system.

 

 

 

 

 

 

 

F. CHECK THERMOSTAT CIRCUIT(S)

c.

Close zone isolation valves.

 

1. Disconnect the two external wires connected

d.

Open quick-fill valve on cold water make-

 

to

the heater

thermostat terminals (low

 

up line.

 

 

 

 

 

 

 

voltage terminal strip terminals 5 and 6).

e.

Open purge valve.

 

2.

Connect

a voltmeter across these two

f.

One zone at a time, open the isolation

 

incoming wires. Close each thermostat, zone

 

valves. Allow water to run through the

 

 

 

valve and relay in the external circuit one at

 

zone, pushing out the air. Run until no

 

 

 

a

time and check the voltmeter reading

 

noticeable air flow is present. Close the

 

 

 

across the incoming wires.

 

zone isolation valves and proceed with

 

 

 

 

 

 

 

 

the next zone. Follow this procedure until 3.

There should NEVER be a voltage reading.

 

all zones are purged.

4. If a voltage does occur under any condition,

g.

Close the quick-fill water valve and purge

 

check and correct the external wiring. (This is

 

valve and

remove the hose. Open all

 

 

 

a common problem when using 3-wire zone

 

isolation

valves. Watch that system

 

 

 

valves.)

 

 

 

pressure rises to correct cold-fill

 

 

 

 

5.

Once the external thermostat circuit wiring is

 

pressure.

 

 

h.

After the

system has operated for a

 

checked

and

corrected if necessary,

 

reconnect

the

external thermostat circuit

 

while, eliminate any residual air by using

 

 

 

wires to heater

low voltage terminal strip

 

the manual air vents located throughout

 

 

 

Allow the heater to cycle.

 

the system.

 

 

 

 

 

 

 

i.

If purge valves are not installed in

 

 

 

 

 

 

system, open manual air vents in system

 

 

 

 

 

 

 

 

 

 

 

 

 

52

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Contents Installation Manual What to do if YOU Smell GAS Contents Contents CONT’D Definitions Part 1 Product and Safety InformationHeater Water Munchkin Contender OperationFreeze Protection Fluids Winterizing the Munchkin ContenderModulating Combustion System Gas ValveReturn water temperature sensor Supply water temperature sensorTemperature and pressure gauge Swirl Plate SystemPart 2 HOW the Munchkin Contender Operates CONT’D Installations Must Comply withBefore Locating the Munchkin Contender Clearances for Service AccessPrevent Combustion AIR Contamination Residential Garage InstallationExhaust Vent and Intake AIR Vent Part 4 Prepare Munchkin Contender Heater Munchkin Contender Wall Mounting Instructions Installation StepsPart 5 Munchkin Contender Piping Circulators Part 5 Munchkin Contender PipingCirculator Sizing Fill and Purge Heating System System Temperature Rise ChartZoning with Zone Valves Munchkin Contender PipingZoning with Circulators Multiple HeatersContender Piping Details Piping symbol legendDrawing 1A Standard Munchkin Contender! Heater zoning with valvesDrawing 1B Standard Munchkin Contender Heater zoning with valvesSpace heating zone circuit See note Make-up water Installation Manual GAS-FIRED Heater Installation Manual Space heating zone circuit Vision I System Piping Zoning with Circulators Using VisionHeater Piping Details with the Vision I System Drawing 2ADrawing 2B OFF Drawing 2CDrawing 3A Drawing 3B Drawing 3C Outdoor Temperature sensor Vision 1 system purgeDrawing 3D Drawing 3E Drawing 3F Drawing 3G General Installing Exhaust Vent and Intake AIR VentExhaust Vent and Intake AIR Vent Pipe Location Exhaust Vent and Intake AIR Vent Sizing Part 7 VENTING, Combustion AIR & Condensate RemovalInstallation Manual Reference National Fuel Gas Code Ansi Z223.1/NFPA 54 Exhaust Vent and Intake AIR Pipe InstallationVent Termination Kits Description Stock Code Heater Removal from a Common Vent SystemCanada Condensate Removal SystemMaterial Sidewall Venting with KIT Diagrams for Sidewall Venting12 2 roof vent with tee intake & coupling exhaust GAS Connection Part 8 GAS PipingGAS Piping GAS TableTAP Inlet Dungs GAS ValveField Wiring Installation Must Comply withLine Voltage Wiring ThermostatPart 9 Field Wiring Part 9 Field Wiring Indirect Circulator P2 Program Part 10 Field Wiring Vision 1 OptionPart 11. START-UP Preparation Freeze Protection When UsedCHECK/CONTROL Water Chemistry Fill and Test Water SystemCheck Thermostat Circuits Check for GAS LeaksPurge AIR from Water System Condensate Removal Part 12. START-UP ProcedureAdjusting the Setpoint Part 12. START-UP ProcedureOperating Instructions Status MenuProgramming the Vision I Option Test ModeVision 1 Program Access Vision 1 Program Navigation Central Heating Curve Function Default Function Function Value DescriptionFunction Function Default Setting Programmed Setting Control Program Reference ChartHeater Fault Munchkin Error CodeHeater Error 925 Control Board Fault Codes Description Remedy Part 14 TroubleshootingOutdoor Sensor 7250P-319 Maintenance ProceduresSure Exhaust Vent is no Longer Blocked For GAS LeaksReplacement Parts Part 15 MaintenanceReplacement Parts Replacement Parts Light Off Activities Heater Start UP ReportHeater Inspection and Maintenance Schedule Heater Inspection and Maintenance Schedule Maintenance Notes Maintenance Notes 2007, 2006 Heat Transfer Products, Inc LP-171 REV /20/07

Gas-Fired Hot Water Circulating Heater specifications

The Munchkin Gas-Fired Hot Water Circulating Heater is a cutting-edge heating solution designed to provide efficient and reliable hot water for residential and commercial applications. Renowned for its compact design and innovative technology, the Munchkin heater combines performance with energy efficiency, making it an ideal choice for those seeking comfort and cost savings.

One of the main features of the Munchkin heater is its modulating burner. This technology intelligently adjusts the heating output based on the demand for hot water, ensuring that energy is not wasted. This leads to lower energy bills and a reduction in environmental impact, as the system only uses the necessary resources to maintain desired water temperatures.

Another notable characteristic is its high-efficiency rating. The Munchkin heater operates with an impressive annual fuel utilization efficiency (AFUE) of up to 95%. This means that the majority of the fuel consumed is converted into usable heat. By maximizing energy utilization, homeowners can enjoy a significant reduction in utility costs while minimizing emissions.

The compact size of the Munchkin Gas-Fired Hot Water Circulating Heater is another significant advantage. It is designed to fit into tight spaces, making it suitable for homes where space is at a premium. This compact design does not compromise performance; instead, it enhances installation flexibility, allowing for placement in basements, closets, or utility rooms.

Munchkin heaters are equipped with advanced control systems that offer enhanced convenience. The digital display and programmable settings allow users to set their preferred temperatures and schedules. This feature not only enhances user comfort but also optimizes energy usage, as water is heated only when necessary.

Safety is also a top priority with Munchkin products. The heater includes built-in safety features such as flame monitoring systems, automatic shut-off capabilities, and pressure relief valves, providing peace of mind for users.

In summary, the Munchkin Gas-Fired Hot Water Circulating Heater is a high-efficiency, compact, and innovative solution for hot water needs. With its modulating burner, high-efficiency rating, advanced control systems, and safety features, it stands out as a reliable choice for those looking to invest in heating technology that prioritizes energy conservation and performance. This heater is truly a forward-thinking solution for modern hot water requirements.
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