Specifications
Table Of Contents
- Contents
- About Your Water Heater
- Water Heater Application
- Model Type
- Water Heater Operation
- Gas Boosting For A Solar Water Heater
- Mains Pressure
- How Hot Should The Water Be?
- Hotter Water Increases The Risk Of Scald Injury
- Warning
- Safety
- Precautions
- General Maintenance
- Minor Six Month Maintenance
- Annual Service
- To Turn Off The Water Heater
- To Turn On The Water Heater
- Going On Holidays
- Frost Protection
- Draining The Water Heater
- How Do I Know If The Water Heater Is Installed Correctly?
- Victorian Customers
- Does The Water Chemistry Affect The Water Heater?
- How Long Will The Water Heater Last?
- Water Supplies
- Save A Service Call
- No Display On The Controller (If Fitted)
- Cold Water From The Hot Tap
- Water Is Too Hot Or Not Hot Enough
- No Water From The Hot Tap
- Water Flow Fluctuates
- Gas Booster Operating Too Frequently
- Fan Continues To Run After Water Heater Operation Stops
- Smell Of Flue Gases
- Clouds Of White ‘Vapour’ From The Flue Terminal
- Pressure Relief Valve Discharging
- Error Code
- Higher Than Expected Gas Bills
- Installation – Water Heater
- Installation Standards
- Water Heater Application
- Water Heater Location
- Ventilation
- Secondary Flue
- Safe Tray
- Pipe Cover
- Frost Protection
- Mains Water Supply
- Preset Outlet Temperature Setting
- Hot Water Delivery
- Circulated Hot Water Flow And Return System
- Reducing Heat Losses
- Dimensions And Technical Data
- Typical Installation – Indoor Location
- Connections – Plumbing
- Flueing
- Connections – Electrical
- Multiple Installations
- Commissioning
- Draining The Water Heater
- Rheem Continuous Flow Gas Water Heater Warranty – Australia Only
- 1. The Rheem Warranty – General
- 2. Terms Of The Rheem Warranty And Exclusions To It
- 3. What Is Covered By The Rheem Warranty For The Water Heaters Detailed In This Document
- 4. Entitlement To Make A Claim Under This Warranty
- 5. How To Make A Claim Under This Warranty
- 6. The Australian Consumer Law
CONNECTIONS – PLUMBING
25
PIPE SIZES
The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing
the most suitable pipe size to ensure adequate flow for each individual application. Reference to the
technical specifications of the water heater and local regulatory authority requirements must be made.
To achieve true mains pressure operation, the cold water line to the water heater should be the same size or
bigger than the hot water line from the water heater.
The minimum recommended cold pipe or solar preheat pipe and hot pipe size is DN20 for a single water
heater installation. If more than one water heater is installed, refer to the table of minimum header pipe sizes
on page 44.
IN-SERIES BOOSTER
The pipe work between the solar storage tank (if one is installed) and the in-series gas booster has a
minimum recommended pipe size of DN20, MUST BE of copper and be fully insulated in accordance with
the requirements of AS/NZS 3500.4.
The insulation must be weatherproof and UV resistant if exposed. The insulation must be fitted up to the
connections on both the solar storage tank and the in-series gas booster. A full flow isolation valve must be
installed on the water line to the in-series gas booster.
GAS INLET
The gas connection is made at the underside of the water heater. The pipe work must be cleared of foreign
matter before connection and purged before attempting to operate the water heater. An isolation valve and
disconnection union must be installed to allow servicing and removal of the water heater (refer to the
diagram on page 24).
Note: Refer to the Gas Installations Standard AS 5601 or AS/NZS 5601.1 for the correct method of sizing
the gas supply pipe to the water heater. The pipe size selection must take into account the high gas input of
this water heater (refer to table on page 22) as well as all of the other gas appliances in the premises.
Warning: Always isolate the water heater before pressure testing the gas supply system. Disconnect the
water heater after the isolation valve to prevent the risk of serious damage to the gas control. The Rheem
warranty does not cover damage of any nature resulting from failure to observe this precaution. Refer to
rating label for gas types and pressures.