Rheem RS80-42BP, RS47-21BP Customer Approval, Branch Circuit Sizing and Wire Size Guide

Installing the water heater.

Review the checklist for installation requirements.

Check the following before beginning installation. Permits

Obtain required permits before installation.

Work Force

An 80 gallon storage tank weighs up to 242 lbs empty, requiring a crew of two or more to install.

Inventory

Review Section on Frames, included hardware, and all optional supplies before beginning installation.

Required Tools, Equipment and Supplies

Basic Plumbing, Electrical and Carpentry Supplies

•Metric wrench (36 mm open end wrench)

•12” pipe wrench

•Two 12” adjustable (crescent)

•Wrenches

•Water pressure gauge

•Crowbar

•Copper tubing cutter

•Soldering kit

•Caulking gun

•24” Spirit (bubble) level

•Cable cutter / stripper

•6” diagonal cutting and long nose pliers

•100' Grounded extension cord

•Screwdriver Set (# 2 Philip’s, 1/4” Slotted)

•Tape measure (100 Foot)

•16-Ounce claw hammer

•Marking pen

•Utility knife

•3/8”-drive socket set

•2 Extension ladders

•Flashlight / electric lantern

•Pipe vice / cutter / threader

•Volt, ohm, ammeter

•Hacksaw

•1/2” Electric drill with bit set

•Skill Saw with standard and masonry blades

•Crane, if required

•1” Wood-boring bit

Consumable Supplies:

•Masking/duct tape

•Wood/sheet metal screws

•Dielectric pipe unions

•Waterproof sealing compound

•5/16” Lag Screws, 1 3/4”, 2”, 3”, 6”, as required

•Washers

•Nails, 16g, or assorted, as required

•Silicone sealant

•2' x 4' x 8'4” redwood, treated-wood or

•Unistrut runners, as required

Customer Approval

•Review the checklist with the customer and discuss all installation requirements and procedures.

• Ask the customer to sign the checklist.

NOTICE: This guide recommends minimum branch circuit sizing and wire size based on National Electric Code. Refer to the wiring diagrams in this manual for field wiring connections.

Branch Circuit Sizing and Wire Size Guide

Total Water	Recommended Over Current Protection				Copper Wire Size AWG Based
Heater Wattage	(fuse or circuit breaker amperage rating)				on N.E.C. Table 310-16 (75°C)
	208V	240V	277V	480V	208V	240V	277V	480V
3,000 or lower	20	20	15	15	12	12	14	14
4,000	25	25	20	15	10	10	12	14
4,500	30	25	25	15	10	10	10	14

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