CRITICAL INSTALLATION WARNINGS
•Install in recreation vehicles only. RV’s are recreation vehicles designed as temporary living quarters for recreation, camping, or travel use having their own power or towed by another vehicle.
•All combustion air must be supplied from outside the RV, and all products of combustion must be vented to outside the RV.
•DO NOT vent water heater with venting system serving another appli- ance.
•DO NOT vent water heater to an outside enclosed porch area.
•Protect building materials from flue gas exhaust.
•Install water heater on an exterior wall, with access door opening to outdoors.
•DO NOT modify water heater in any way.
•DO NOT alter water heater for a positive grounding system.
•DO NOT
•DO NOT use battery charger to supply power to water heater even when testing.
USA AND CANADA - FOLLOW ALL APPLICABLE STATE AND LOCAL CODES -
IN THE ABSENCE OF LOCAL CODES OR REGULATIONS, REFER TO CURRENT STANDARDS OF:
•Recreation Vehicles ANSI A119.2/NFPA 501C.
•National Fuel Gas Code ANSI Z223.1 and/or CAN/CGA B149 Installation Codes
•Federal Mobile Home Construction & Safety Standard, Title 24 CFR, part 3280, or when this Standard is not applicable, the Standard for Manufactured Home Installations (Manufactured Home Sites, Communities and
•National Electrical Code ANSI/NFPA No. 70 and/or CSA C22.1
•Park Trailers A119.5
•CSA standard Z240 RV Series, Recreational Vehicle.
GENERAL INSTALLATION
This is a common installation for water heaters. There are other approved methods such as Baggage Compartment (MPD 90093) and Flush Mount (MPD 93948) installations. Consult with your Field Auditor, Account Manager, or the Atwood Service Department if you have additional questions.
1.Locate water heater on floor of coach before erecting side walls. The water heater tank must be permanently supported at the same level as the bottom of sidewall cutout (by the floor or a raised floor) FIG 2. Provide adequate clearance at rear of unit for service of water connections.
2.To install water heater on carpeting, you must install appliance on a metal or wood panel that extends at least three inches beyond the full width and depth of appliance.
3.If the appliance is installed where connection or tank leakage will damage adjacent area, install a drain pan (which can be drained to out side of coach) under water heater.
WIRING
All wiring must comply with applicable electrical codes.
COMBINATION GAS/ELECTRIC MODELS are designed to operate with gas, electricity, or a combination of both.
•Use electrical metallic tubing, flexible metal conduit, metal clad cable, or
1.Refer to Wiring Diagram (FIG 12). Make 120 VAC electrical connec- tions from junction box on back of unit.
a.Connect hot lead to (1) Black.
b.Connect common lead to (2) White.
c.Connect ground wire from electrical service to (3) green ground lead in junction box 3.
CAUTION
PRODUCT DAMAGE
•When using Romex® with a bare earth ground, take care to position ground wire so it does not contact the heating element terminals.
•When a cord and plug connection to the power supply are used on water heater, power cord must be UL listed as suitable for damp locations, hard or extra hard usage. It must be a flexible cord such as type S, SO, ST, STO, SJ, SJT, SJTO, HS or HSO cord as described in National Electrical Code, ANSI/NFPA 70. The length of external cord to water heater, measured to face of attachment plug, shall be no less than 2 feet nor more than 6 feet. Supply cord must be a min- imum of 14 AWG and attachment plug must be rated at 15 amps.
CAUTION
ELECTRICAL DAMAGE
•Label all wires before disconnecting when servicing controls.
•Verify proper operation after servicing.
ELECTRONIC IGNITION
NOTE: It is recommended unit be connected directly to a 12V DC bat- tery or to filtered side of an AC/DC converter. Avoid connections to unfiltered side of an AC/DC converter whenever possible. Use a mini- mum of 18 gauge wire, UL and CSA listed.
1.Refer to Wiring Diagram (FIG 12). Install remote switch in a conven- ient location. Position wall plate with letters up. Before making con- nections turn switch OFF.
2.Install wires see FIG 10 & 11.
PILOT RELIGHT - FIG 12
1.Install unit according to GENERAL INSTALLATION instructions.
2.Refer to Wiring Diagram. Use 18 gauge wire, UL/CSA listed.
3.Read PILOT & PILOT RELIGHT OPERATIONS.
HEAT EXCHANGE MODELS - FIG 5
1.Push a 5/8˝ diameter coolant system hose
2.Spread hose clamp and slide toward heat exchange unit past annu- lar groove
3.Continue to HOW TO OPERATE YOUR WATER HEATER and/or Electronic Ignition OPERATION.
CONTINUE GENERAL INSTALLATION
4.Connect both 1/2˝ NPT water lines (FIG 2) hot water outlet female and cold water inlet female and 3/8˝ flared LP gas line to the water heater (FIG 9).
a.Allow flexibility in water and gas lines so you can pull unit for- ward through wall one inch past skin.
b.Seal gas line entrance opening (FIG 9) by sliding grommet
c.Always use pipe lubricant on threads when connecting hot and cold water couplings. A suitable plastic fitting is recommended.
CAUTION
PRODUCT DAMAGE
•Do not lift, pull, push or misalign main burner tube (FIG
5.Erect side walls and cut opening. See chart and FIG 1. Frame with 2x2 lumber (or equivalent).
CUTOUT (FIG 1 & 2)
CAPACITY | CUT OUT DIMENSION | DEPTH | |
Gallon | |||
4 - 6 | |||
10 | |||
MINIMUM CLEARANCE FROM COMBUSTIBLE CONSTRUCTION | |||
Sides: | 0˝ | Top: | 0˝ |
Back: | 0˝ | Bottom: | 0˝ |
6.Bend all flanges 90˚ along scored lines (FIG
7.To prevent water leaks caulk thoroughly around opening, including bend slots. Butyl Tape
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