Table of Contents
Advertisement
Installation and User Instructions
Rectangular Combination Water Heaters
Models: R25, R45, R70, R115
PACK CONTENTS
Heater, Float Valve & Arm, Float, Overflow Fitting, Dip Tube, Screened
Breather, Wall Mounting Collars & Installation and User Instructions.
WARNING
This water heater must only be installed by qualified persons.
Please read and understand these instructions before starting work.
Please leave this leaflet with the user following installation.
SY0019200 Revision 6.
1
Advertisement
Table of Contents
Related Manuals for Santon R70
Summarization of Contents
Introduction to Santon Water Heaters
Unit Purpose and Application
Details the R Series units' design for general hot water supply in various locations.
Important Installation Points
Structural Support Requirements
Ensures wall or structure strength is adequate to support the heater, referencing Table 1.
Clearance for Float Valve Replacement
Specifies minimum space above heater lid for float valve replacement as per Water Regulations.
Heater Base Level Requirement
Heater base must be level with or higher than the highest draw-off point.
Servicing Valve Installation Requirements
Mandates servicing valves on inlet and outlet pipes per Water Regulations.
Installation - General Requirements
Wall Fixing Hole Marking
Marking top fixing holes using template, checking for hidden services before drilling.
Wall Fixing Procedure
Details the process for drilling and fitting 10mm wall fixings and spacing collars.
Float Valve Fitting and Seating Adjustment
Instructions for fitting the float valve and adjusting seating for different inlet pressures.
Overflow Fitting and Blanking Plugs
Instructions for fitting the overflow fitting, dip tube, and blanking plugs.
Outlet Connection Fitting
Fitting a 3/4" BSP female to 22mm compression fitting to the outlet boss.
Heater Outlet Connection and Support
Connecting the heater outlet, ensuring support and clearance, and fitting an isolating valve.
Mains Water Supply Connection
Connecting mains water to the float valve using 15mm pipe and a servicing valve.
Overflow Pipe Connection
Connecting the overflow pipe with a continuous fall to a safe, visible position.
Screened Breather Installation
Installing the screened breather into the lid and securing it with the plastic nut.
Installation - Electrical Requirements
Electrical Supply Requirements
Specifies 13A fused supply via a double pole isolating switch with 3mm contact separation.
Cable Specifications
Details heat-resisting cable (85°C) with 1.5 mm² minimum cross-section for connections.
Terminal Cover and Thermostat Adjustment
Procedure for removing terminal cover and adjusting thermostat/thermal cut-out.
Cable Stripping and Gland Fitting
Instructions for stripping cable and fitting it securely into the cable grip.
Electrical Wiring Connections
Guides connection of brown, blue, and green/yellow conductors to thermostat, neutral, and earth terminals.
Temperature Settings
Control Thermostat Adjustment
Details adjusting the Cotherm thermostat, recommended settings, and maximum temperature limits.
Thermal Cut-out Setting
Explains the thermal cut-out function, reset procedure, and setting relative to the thermostat.
Commissioning
Pre-Commissioning Checks
Checking cold feed and vent pipes for obstructions before proceeding with commissioning.
Filling and Purging Procedure
Instructions for filling the unit, purging air, and flushing pipework.
Float Valve Shut-off and Water Level Check
Verifying float valve shut-off and adjusting water level in the cistern tank.
Final Commissioning Steps
Securing the lid, checking for leaks, and turning on the electrical supply.
Maintenance - Heating Element Replacement
Isolating Unit and Draining
Procedures for isolating power, checking temperature, and draining the unit.
Terminal Cover and Cable Disconnection
Steps to remove terminal cover, disconnect supply cable, and unscrew immersion heater.
Re-assembly and Leak Check
Re-assembling with new gasket, refitting drain nut, and checking for leaks.
Restoring Power
Final steps to restore power after heating element replacement.
Spare Parts
Ordering Spare Parts
Guidance on identifying and ordering correct spare parts using rating label information.
Important Note on Parts Replacement
Warning against using non-Santon recommended parts to avoid voiding warranty or danger.
Fault Finding
Troubleshooting: Water Not Heating
Diagnosing and resolving issues when the water is not heating.
Troubleshooting: Water Too Hot
Diagnosing and resolving issues when the water is too hot.
Guarantee and Environmental Information
Product Guarantee Conditions
Details the conditions required for the 2-year guarantee to be valid.
Environmental Information
Information on recyclable materials and CFC-free insulation used in Santon products.
Need help?
Do you have a question about the R70 and is the answer not in the manual?
Questions and answers