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RESIDENTIAL GAS WATER HEATERS
300 Maddox Simpson Parkway
Lebanon, TN 37090
Phone: 615-889-8900 • Fax: 615-547-1000
Technical Services email: 2tech@lochinvar.com
www.lochinvar.com
WARNING: If the information in these instruc-
tions is not followed exactly, a fire or explosion
may result causing property damage, personal
injury or death.
- Do not store or use gasoline or other flam-
mable vapors and liquids in the vicinity of
this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas sup-
plier's instructions.
• If you cannot reach your gas supplier, call
the fire department.
- Installation and service must be performed by
a qualified installer, service agency or the
gas supplier.
ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS
PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE CONTACT THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.
KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE
2007
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.
Installation and Operating Manual
POWER DIRECT VENT GAS MODELS
NOT FOR USE IN MANUFACTURED (MOBILE) HOMES
•
AN ODORANT IS ADDED TO THE GAS USED
BY THIS WATER HEATER.
WITH HOT SURFACE IGNITION
SERIES 300, 301
WARNING
Read and understand instruction
manual and safety messages
before installing, operating or
servicing this water heater.
Failure to follow instructions and
safety messages could result in
death or serious injury.
Instruction manual must remain
with water heater.
•
For Your Safety
100304522_2000545236 _Rev. 02
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Table of Contents
Related Manuals for Lochinvar 300
Summary of Contents for Lochinvar 300
- Page 1 RESIDENTIAL GAS WATER HEATERS POWER DIRECT VENT GAS MODELS WITH HOT SURFACE IGNITION NOT FOR USE IN MANUFACTURED (MOBILE) HOMES SERIES 300, 301 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 Technical Services email: 2tech@lochinvar.com www.lochinvar.com...
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Page 2: Table Of Contents
Deluxe Horizontal Venting Kit ....28 “Pyramid” Vent Terminal “Mushroom” Vent Terminal Connections To The Air Box www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 3: Safe Installation, Use And Service
The gas supplier typically has responsibility for the inspection and code approval of gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also offer service and inspection of appliances within the building. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 4: General Safety
• Use only gas shown on rating plate. • Maintain required clearances to combustibles. • Keep ignition sources away from faucets after extended period of non-use. Read instruction manual before installing, using or servicing water heater. www. lochinvar .com 100304522_2000545236 _Rev. 02... - Page 5 4. can be carried from other 3. tightly closed and rooms to the electrodes 4. out of children's reach. by air currents. Installation: Do not install the water heater where flammable products will be stored or used. 100304522_2000545236 _Rev. 02 www. lochinvar .com...
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Page 6: Introduction
It could cause DEATH, SERIOUS BODILY 8. This product is certified to comply with a maximum INJURY AND/OR PROPERTY DAMAGE. This manual weighted average of 0.25% lead content as required contains instructions for installation, operation, in some areas. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 7: Installation Requirements For The Commonwealth Of
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 8: Massachusetts
3.) PIPING LOOP BETWEEN WATER HEATER AND AIR HANDLER MUST BE INSTALLED IN COMPLIANCE WITH 248 CMR. † REQUIRED FOR MASSACHUSETTS. ‡ PIPING FROM THE TOP OF THE WATER HEATER WITH TEES IS ACCEPTABLE. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 9: Typical Installation
*, **, ***, **** see notes on following Figure 4) page 34 Sheet Metal Burner (see Figure 3 & Figure 4) AIR INLET EXHAUST PIPING OUTLET PIPING 12 13 Front View Rear View Figure 1. Figure 2. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 10: Replacement Parts And Deliming Products
9 in Figure 1). See also . If the heater is to be operated without using the side taps for combo heating, these openings must be plugged with the two pipe plugs supplied with the heaters. Figure 5. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 11: Water Piping - Mixing Valve Usage
Table 1 (published by U.S. Government Memorandum, 1978) shows the approximate time-to-burn relationship for normal adult skin. If anyone using hot water provided by the water heater being installed fits into one of these groups, special precautions must be taken. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 12: Water Heater Operation
TIME OPERATING AND THERE ARE NO BLOCKAGES (INTAKE OR EXHAUST) TEMPERATURE SWITCH REMAINS CLOSED INDICATING VENT HEATER TEMPERATURE IS NOT REMAINS ON ABOVE THE ALLOWABLE STANDBY UNTIL LIMIT NEXT CALL FOR HEAT Figure 8. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 13: Electrical Requirements & Wiring Diagram
IGNITER - FLAME ROD CAPACITOR BROWN ASSEMBLY WHITE WHITE WHITE-BLUE YELLOW YELLOW-GREEN WHITE BLOWER WHITE - NEUTRAL BLACK - LINE BLUE BLACK GREEN - GND GREEN 120VAC/60HZ WALL PLUG HONEYWELL JUNCTION BOX GAS VALVE Figure 9. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 14: Safety Lockouts
Property Damage Hazard • All water heaters eventually leak. • Do not install without adequate drainage. Installation of the water heater must be accomplished in such a manner that if the tank or any connections should www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 15: Clearances To Combustibles
3” in every direction, or if the appliance is installed in an alcove or closet, the entire floor must be covered by the panel. Failure to heed this warning may result in a fire hazard. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 16: Important Notes And Warnings
Note: Contaminated or dusty air may cause build-up on the blower wheel resulting in nuisance shut downs. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 17: Installing The New Water Heater
Do not connect the water heater to any system or applications. components previously used with non-potable water heating appliances when used to supply potable water. WARNING Toxic Chemical Hazard • Do not connect to non-potable water system. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 18: Combo Heating
The following is a list of requirements for the installation of option A or B. 1. Install shut-off valves and unions so that the water heater can be isolated from the heating module should servicing of the water heater become necessary. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 19: Closed Water Systems
Do not solder the water lines directly to the • Do not apply heat to cold water inlet. water heater connections - it will harm the dip tube and • Contact qualified installer or service agency. heat traps and damage the tank. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 20: Temperature-Pressure Relief Valve
.com 100304522_2000545236 _Rev. 02... -
Page 21: Temperature-Pressure Relief Valve And Pipe
Once seated, secure the insulation with duct tape, electrical tape, or equivalent. 6. Repeat steps 4 and 5 for the hot water (outlet) pipe. 7. Add additional sections of pipe insulation as needed. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 22: Gas Piping
A gas line of sufficient size must be run to the water heater. CONTROL VALVE Consult the current edition of “National Fuel Gas Code”, ANSI Z223.1/NFPA 54 and your gas supplier concerning pipe size. Figure 16. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 23: Sediment Traps
The sediment trap must be readily accessible. Install in accordance with the "Gas Piping" section. Refer to the current edition of the “National Fuel Gas Code”, ANSI Z223.1/NFPA 54. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 24: Filling The Water Heater
Allow water to run until a constant flow is obtained. This will let air out of the water heater and the piping. 6. Check all water piping and connections for leaks. Repair as needed. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 25: Venting
Note: Before installing the Power Direct Vent Water Heater, it is recommended that the location of the pipe terminations (air intake and exhaust vent) be determined. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 26: Termination Clearances (Side Wall)
† The vent shall not terminate over public walkways or over an area where condensate or vapor could create a nuisance or hazard or could be detrimental to the operation of regulators, relief valves, or other equipment. ‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 27: Termination Types
8” . 6. The air intake terminal and the exhaust vent terminal SIDE WALL 8” MIN. must be oriented facing downward and the same direction. 24” MAX INTAKE EXHAUST VENT VENT TERMINAL TERMINAL Figure 20. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 28: Side Wall Vent Option For Cold Climates
This section gives directions for replacing Figure 22 is recommended. This will reduce the possibility series 300 and 310 PDV water heaters terminated with of exhaust gas recirculation as well as reduce the chance the Deluxe Horizontal Venting Kit. -
Page 29: Mushroom" Vent Terminal
4. Drill 7/64” pilot holes for a #8 screw (see Figure 26). Take care not to damage the O-ring. 5. Secure the vent piping to the air box with screws (see Figure 26). 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 30: Low Profile Side Wall Vent Termination
The Low Profile termination is certified to be used on all be drilled for the anchors. Locate the anchor hole using PDV model series 300/301 and 310/311 water heaters. the base as a template. These instructions are to be followed in conjunction 4. -
Page 31: Concentric Vent Termination
SHOWN) OR AT ANY OTHER ANGLE TO SUIT THE INSTALLATION. 90° ELBOW STRAP (SEE LOCAL (FIELD CODES) SUPPLIED) EXHAUST SLOPE 1/4” OVER 5’ 1” MINIMUM COMBUSTION WALL ELBOW VENT SCREEN (FIELD INSIDE SUPPLIED) Figure 31. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 32: Multiple Concentric Vent Termination
TERMINATION 9 .5 ” M A X . 90° ELBOW AIR INTAKE TERMINATION VENT SCREEN - INSTALL IN TERMINATIONS 12” MIN.* *OR 12” ABOVE ANTICIPATED VENT SCREEN WALL SNOW LEVEL Figure 34. Figure 35. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 33: Vent Pipe Material
Always check the marking on the pipe to make sure you are using the correct material. Note: Use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel® (polyphenolsulfone) in non-metallic venting systems is prohibited. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 34: Polypropylene Vent Systems
Table 6. blower is hot, some installations will have water condense in the vent piping. If this occurs, then adequate means of draining and disposing of the condensate shall be made by the installer. www. lochinvar .com 100304522_2000545236 _Rev. 02... - Page 35 3. If additional elbows are used in the vent system the allowable vent lengths are reduced. 4. Two 45° elbows are considered the equivalent of one 90° elbow. Table 8. 100304522_2000545236 _Rev. 02 www. lochinvar .com...
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Page 36: Vent Screens
Note: The same vent screen type (restrictive or debris) SCREEN (SUPPLIED) should be installed in the intake and the exhaust piping. In Figure 39. the concentric vent application, the screen is to be installed in the exhaust piping only. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 37: Vent Pipe Installation
• Cans of cement and primer should be closed at all times when not in use to prevent evaporation of chemicals and hardening of cement. • They are also very flammable and should be kept away from heat or flame. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 38: Vent Pipe Preparation
• Use only gas shown on rating plate. • Maintain required clearances to combustibles. • Keep ignition sources away from faucets after extended period of non-use. Read instruction manual before installing, using or servicing water heater. www. lochinvar .com 100304522_2000545236 _Rev. 02... - Page 39 • They are also very flammable and should be kept away from heat or flame. Figure 41. 100304522_2000545236 _Rev. 02 www. lochinvar .com...
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Page 40: Blower Assembly Installation
2” or 3” pipe. To start off with an elbow, a short section of the straight pipe must be cut and glued into the end of the elbow that will mount in the rubber coupling. Figure 44. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 41: Connections To The Blower And Air Duct
3”-4” • Do not apply solvent cement or silicone to the rubber ADAPTER coupling connection. 3”-4” ADAPTER 3” VENT PIPE, 3” MAX LENGTH 3” PIPE 3” RUBBER COUPLING BLOWER AIR DUCT ADAPTER Figure 47. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 42: Condensate (Exhaust)
Condensate lines must be free and clear of debris and must not allow back flow through drain line. • Condensate lines must be able to flow freely to an appropriate drain. • Do not allow condensate lines to become crimped closed. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 43: Installation Checklist
Horizontal piping slopes at an upward pitch of 1/8” proceed with lighting the heater. rise per 5’ away from the water heater. Not obstructed in any way. Means installed to collect, neutralize (if required) and dispose of condensate. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 44: Lighting Instructions
1. Turn the thermostat counter-clockwise to the lowest setting. 2. Set the gas control switch to the “OFF” position. 3. Turn off electrical power to the appliance if service is to be performed. 323546-000 www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 45: Operating The Temperature Control System
In addition to using lowest possible temperature setting that satisfies 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 46: Gas Control Valve/Thermostat
This effectively turns the controller temperature setting down to a temperature that prevents the water in the water heater from freezing while still conserving energy. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 47: For Your Information
There must be no smoking or open flame near the faucet at the time it is open. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 48: Periodic Maintenance
Repair and/or replace immediately as necessary. Note: Do not reach inside the vent termination while the heater is in operation. • Remove any debris that may have accumulated on the screen in the vent terminations. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 49: Combustion Chamber And Burner Cleaning
Temperature-pressure relief valve leakage due to pressure build up in a closed system that does not have a thermal expansion tank installed is not covered under the Limited Warranty. Thermal expansion tanks must be installed on all closed water systems. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 50: Draining And Flushing
7. If not already done, open a hot water faucet to help the water in the tank drain faster. 8. If a large amount of sediment was present when the tank was drained, follow instructions in the "To Flush The Water Heater Storage Tank" section. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 51: Anode Rod Maintenance
8. Remove the hose and follow instructions in the "Filling The Water Heater" section. 9. Follow the lighting instructions on the label or see "Lighting Instructions" to restart the water heater. See Figure 54 for anode rod location. 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 52: Leakage Checkpoints
Water in the water heater bottom may be from condensation, loose connections, or the relief valve. DO NOT replace the water heater until a full inspection of all possible water sources is made and necessary corrective steps taken. Figure 55. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 53: Reference Parts Listing
36 Gas Manifold (see Figure 3 & Figure 4) *, **, ***, **** see notes on following (see also Figure 58 & Figure 59) page. AIR INLET EXHAUST PIPING OUTLET PIPING 12 13 Front View Rear View Figure 56. Figure 57. 100304522_2000545236 _Rev. 02 www. lochinvar .com... - Page 54 Propane (LP) models has Left- Flare † hand thread. †† †† For Natural gas models the Flare Nut has Right-hand thread. For Propane (LP) models the Flare Nut has Left-hand thread. Figure 59. www. lochinvar .com 100304522_2000545236 _Rev. 02...
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Page 55: Troubleshooting Guidelines
Prove Period back into lockout. Pressure Switch (PS) Fault Delay (failed 2 minutes open/closed) Soft Lockout 20 minutes Energy Cut Off Indefinite (ECO) Limit Lockout 100304522_2000545236 _Rev. 02 www. lochinvar .com... -
Page 56: System Status And Error Codes
Example: Corrective Action Number 9, Six-Two Flash, three second pause. For this code, the LED indicator light will make six bright flashes, pause for one second and then make two more bright flashes. The LED will pause for three seconds and repeat the six-two cycle of flashes. www. lochinvar .com 100304522_2000545236 _Rev. 02... -
Page 57: Corrective Actions
1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code. 2. Flame rod not properly seated in flame, reposition rod. 3. Clean flame sensor rod with fine steel wood to avoid lock-out. 4. Replace the control if the fault code persists. 100304522_2000545236 _Rev. 02 www. lochinvar .com... - Page 58 1. Turn the power “OFF” for 10-20 seconds then “ON” again to clear the fault code. 2. Replace the control if the fault code persist. 1. Control has failed. If resetting the control does not clear the fault code, replace the control. www. lochinvar .com 100304522_2000545236 _Rev. 02...
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Page 59: Other Symptoms
3. Replace blower high limit switch WARNING! Because higher temperatures increase the risk of scalding, if you set the thermostat(s) higher than 120°F, Thermostatic Mixing Valves (see Figure 7) at each point-of-use are particularly important. 100304522_2000545236 _Rev. 02 www. lochinvar .com... - Page 60 300 Maddox Simpson Parkway Lebanon, TN 37090 Phone: 615-889-8900 • Fax: 615-547-1000 Technical Services email: 2tech@lochinvar.com www.lochinvar.com Copyright © 2018 Lochinvar LLC. All rights reserved.