Instruction/ maintenance manual of the product 399M Munchkin
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HEA T TRANSFER PRODUCTS, INC. 120 BRALEY RD ., E . FREET OWN , MA 02717 Installing , Operating & Maintaining MUNCHKIN™ HIGH EFFICIENCY 399M COMMERCIAL BOILER Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
USING THIS MANUAL 2 SPECIAL A TTENTION BO XES Throughout this manual you will see these special attention box es similar to this one, which are intended to supplement the instructions and mak e special notice of potential hazards. These categories mean, in the judgement of Heat T ransfer Products, Inc.
T ABLE OF CONTENTS 3 T ABLE OF CONTENTS P ART 1 . . . . . . . . . . . . . . . . . . . . . .4 thru 6 GENERAL INFORMA TION A How It Operates . . . . . . . . . . . . . . . . . .4 B Munchkin Ratings and Dimensions .4–5 C Pre-installation Requirements . .
GENERAL INFORMA TION 4 B. MUNCHKIN RA TINGS AND DIMENSIONS PERFORMANCE RA TING CONNECTION SIZES RECOMMENDED SERVICE CLEARANCES l e d o Mn o i t a l u d o M t u p n Ig n i t a e H E O Dy c n e i c i f .
5 GENERAL INFORMA TION DIMENSIONS C. PRE-INST ALLA TION REQUIREMENTS The Munchkin is designed for installation on non-rated flooring, in alcoves, basements, utility rooms, and closet but never a bedroom closet.
6 GENERAL INFORMA TION / ELECTRICAL NOTE: Service clearance of the Munchkin 1. The front of the appliance needs 24" of clearance for service minimum. It may have a non-rated or combustible door or access panel and must have a minimum of 24" clearance.
7 ELECTRICAL The electrical requirements are for standard 120 volts, 60 Hz 15 Amp service. This unit is wired with #18 awg and fused for no more than 15 Amps. There are two ground points in the electrical compartment that must be connected to the building ground system.
P ART 3. GAS CONNECTION 8 W ARNING F ailure to follow all precautions could result in fire, explosion or death! ELECTRICAL / GAS CONNECTION Figure 2-3: For circulator amp loads greater than 4 amps (3 amps for “HA ” models) use the wiring diagram shown at left.
9 GAS CONNECTION A. GAS CONNECTION The gas supply shall have a maximum inlet pressure of less than 14" water column (350 mm), ½ pound pressure (3.5 kP a), and a minimum of 7" water column. The entire piping system, gas meter and regulator must be sized properly to prevent pressure drop greater than 0.
10 W ARNING F ailure to follow all precautions could result in fire, explosion or death! GAS CONNECTION removing the cap and installing the manometer . The gas pressure must remain between 7" and 14" during stand-by (static) mode and while in operating (dynamic) mode.
11 VENTING P ART 4. VENTING A. APPRO VED VENTING MA TERIALS Exhaust V ent Use Plastic 4" Pipe Schedule 40 or 80. 1. Non-F oam Core PVC Pipe 2. Non-F oam Core CPVC Pipe 3.
12 VENTING The inlet pipe on the back of the cabinet should be 4" PVC schedule 40. It is very important that you plan the location properly to eliminate long pipe runs and excessive fittings. Inlet pipe size must not be reduced. Do not combine the inlet air with any other inlet pipe including an inlet to an additional similar appliance.
13 RECOMMENDED VENTING CLEARANCES PER THE NA TIONAL FUEL GAS CODE* All venting must be properly supported. The Munchkin is not intended to support any venting whatsoever .
14 VENTING Required: 4 Pcs. 4" 90 degree elbow (4 x 5 = 20 Equivalent F eet) = 20 Equivalent Feet Required: 20' of 6" Plastic PVC Pipe (20 x 1 = 20 Equivalent F eet) = 20 Equivalent F eet T otal F riction Loss in Equivalent Feet (20 + 20 = 40 Equivalent Feet) = 40 Equivalent F eet C.
VENTING 15 D . HEA TER REMOV AL FROM A COMMON VENT SYSTEM At the time of removal of an existing heater , the following steps shall be followed with each appli- ance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to common venting system are not operating.
16 **IMPORT ANT NO TE : All vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of a ¼" per foot back to the heater (to allow drainage of condensate).
17 VENTING / PIPING E. CONDENSA TE REQUIREMENTS This is a condensing high efficiency appliance, therefore this unit has a condensate removal system. Condensate is nothing more than water vapor , derived from the combustion products, similar to an automobile when it is initially started.
pound. Threaded connections are 2” NPT Brass nipples located on the left hand side of unit. 2. Connect the system supply marked “Heater Out ”, make sure to install with pipe sealant com- pound. Threaded connections are 2” NPT Brass nipples located on the left hand side of the unit.
19 PIPING C. FILL AND PURGE HEA TING SYSTEM • Attach the hose to balance and purge hose connector or drain valve and run hose to near- est drain • Close the other side of the balance and purge valve or the shut off valve after the drain. • Open first zone balance and purge or drain valve to let water flow out the hose.
20 PIPING Piping Symbol Legend circulator (w/ isolation flanges) gate valve globe valve ball valve swing-check valve flow-check valve spring-loaded check valve hose bib / boiler drain thermostatic rad.
21 PIPING Standard Munchkin boiler Retrofit piping (zoning with valves) Space heating mode Munchkin boiler P1 Super Stor indirect DHW tank T/P Drawing 1A make-up water zone valves purging valves NOTES: 1. This drawing is meant to show system piping concept only.
22 PIPING Standard Munchkin boiler Retrofit piping (zoning with valves) Domestic water heating mode Munchkin boiler P1 Super Stor indirect DHW tank T/P Drawing 1B make-up water purging valves V1 zone valves flow bypass valve anti-scald mixing valve NOTES: 1.
23 PIPING Standard Munchkin boiler Preferred piping (zoning with valves) Space heating mode Munchkin boiler P1 Super Stor indirect DHW tank T/P Drawing 2A make-up water zone valves NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes.
24 PIPING Standard Munchkin boiler Preferred piping (zoning with valves) Domestic water heating mode Munchkin boiler P1 Super Stor indirect DHW tank T/P Drawing 2B make-up water V1 zone valves anti-scald mixing valve purging valves closely spaced tees differential pressure bypass valve P2 NOTES: 1.
25 PIPING Standard Munchkin boiler Preferred piping (zoning with circulators) Space heating mode NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes. 2.
Standard Munchkin boiler Preferred piping (zoning with circulators) Domestic water heating mode Munchkin boiler make-up water Super Stor indirect DHW tank closely spaced tees P2 zone circulators T/P space heating zone circuit Drawing 2D purging valves NOTES: 1.
27 PIPING Fig. 5-9 Standard Munchkin boiler Preferred piping (multiple boilers / zoning with circulators) Space heating mode NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes.
28 PIPING Standard Munchkin boiler Preferred piping (multiple boilers / zoning with circulators) Domestic water heating mode NOTES: 1. This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing required by local codes.
29 ST ART -UP PROCEDURES P ART 6. ST ART -UP PROCEDURES A. ITEMS T O BE CHECKED BEFORE LIGHTING THE MUNCHKIN It is recommended that you read the General Information Section (P art 1) to get a better under- standing how the Munchkin operates before you start the unit.
30 ST ART -UP PROCEDURES 4. Do not use this appliance if any part has been under water . Immediately call a qualified serv- ice technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water .
31 E. ST A TUS MENU Installers are also able to check the current status of the Munchkin parameters by pressing S4/RESET key for 3 seconds. Once activated, the display will show d1 alternating value of the actual outlet tem- perature. Actual values are displayed for each function.
32 P ART 7. SERVICING A. SEQUENCE OF OPERA TION 1. When power is first applied to the control, the control display will read the outlet tempera- ture. The control will initially run through a self-diagnostic routine and then go into its oper- ating mode.
33 SERVICING closed. This could occur if the clear hose, which is connected to the outlet of the fan is disconnect- ed. This can be corrected by re- connecting the hose. Listed below are the T emporary F ault Codes. E00 This code will appear if there is an overshoot of the high limit.
34 F05 Supply T emperature is to High – This code appears if the Supply temperature sensor goes above 230 degrees. Remedy – Let the Munchkin cool down, then manually push the reset button and see if the temperature increases to above 230 degrees.
35 F30 W atchdog. Call F actory for further assistance. Remedy – Call Factory for further assistance F31 P arameter Memory . External P arameter memory corrupted Remedy – Call Factory for further assistance F32 P arameter memory write error .
SERVICING 36 Boiler & Indirect Temperature (˚F) Resistance (ohms) 32 32550 41 25340 50 19870 59 15700 68 12490 77 10000 86 8059 95 6535 104 5330 113 4372 122 3605 131 2989 140 2490 149 2084 158 1.
37 MAINTENANCE P ART 8. MAINTENANCE A. MAINTENANCE PROCEDURES P eriodic maintenance should be performed once a year by a qualified service technician to assure that all the equipment is in safe efficient operation. The owner can make necessary arrangements with a qualified heating contractor for periodic maintenance of the heater .
38 MAINTENANCE in which case, a qualified plumber will need to be contacted to follow the Coil Cleaning Instructions (Section D) included in this section to dissolve deposit and clean condensate line.
39 MAINTENANCE CONTROL WIRING LA Y OUT Fig . 8-1 * There is a spare 6.3 amp “slow blow ” fuse included on the control cover . HTP p/n 7250-378 or you may purchase it from Radio Shack p/n: 270-1068 Caution: Do not replace with any amperage other than 6.
40 MAINTENANCE.
41 MAINTENANCE.
42 NOTES.
43 NOTES.
SuperStor Ultra, SuperStor , V oyager , V oyager Sanitizer , and Everlast are registered trademarks of Heat T ransfer Products, Inc. © 2004 Heat T ransfer P roducts, Inc.
An important point after buying a device Munchkin 399M (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Munchkin 399M yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Munchkin 399M - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Munchkin 399M you will learn all the available features of the product, as well as information on its operation. The information that you get Munchkin 399M will certainly help you make a decision on the purchase.
If you already are a holder of Munchkin 399M, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Munchkin 399M.
However, one of the most important roles played by the user manual is to help in solving problems with Munchkin 399M. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Munchkin 399M along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
