Tankless-Water-Heater

TANKLESS
WATER HEATERS
Models & Prices

Tankless Water Heater Product Guide
Description / Specification

Tankless Water Heater Applications
Residential / Commercial

Tankless Water Heater Electrical Guide
Service Calculations

Tankless Water Heater Installation
Plumbing / Electrical

Tankless Water Heater Cost Comparisons
Reports / Listings

Tankless Water Heaters Service Guide
Remove / Repair

Internal Workings & Identification
Four Chamber (RA-18, 22 & 28)

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LEGEND

1:Heating Element #1 ••••• 2: Heating Element #2 •••••3:Heating Element #3
4:Heating Element #4 ••••• 5:Inlet Water Tube ••••• 6:Level Detect Screw
7:Level Detect Screw ••••• 8:Outlet Water Tube ••••• 9: Printed Circuit Board
10:Transformer ••••• 11:Heating Element Relays (8) •••••12:Audible Speaker
13:Output Temperature Control •••••14:Microprocessor Control Chip
15:Blue Button; Activates Audible ••••• 16:Terminal Spades for Leak Detect Wires
17:Triacs (4) ••••• 18:Triac Mounting Blocks to Heat Sink (4)
19:Copper Heat Sink Tube

L1:Power Connection Lugs (208 — 240 VAC)
L2:Power Connection Lugs (208 — 240 VAC)
H. Limit : High Temperature Limit Switches (2)
TH-IN : Inlet Temperature Sensor
TH-1 : Chamber Temperature Sensor #1
TH-2 : Chamber Temperature Sensor #2
TH-3 : Chamber Temperature Sensor #3
TH-4 : Chamber Temperature Sensor #4

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