Ideal Heating i305 - Servicing; Servicing Schedule

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Installation and Servicing
SECTION 3 - SERVICING
3. SERVICING
3.1 SERVICING SCHEDULE
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be able to download the relevant information.
To ensure the continued safe and efcient operation of the appliance it is recommended that it is checked at regular intervals and
serviced as necessary. The frequency of servicing will depend upon the installation condition and usage but should be carried out
at least annually.
Note: In order to carry out either servicing or replacement of components the HIU front panel and insulation must be removed.
Refer to Sections 3.4 & 3.12.
1. Check the HIU for any signs of water leakage. If required isolate and drain down then re-make any joint as necessary and
ensure the system is correctly re-lled, vented and re-pressurised.
2. Check CH circuit pressure and top up if necessary.
3. Check operation of CH by calling for a heating demand. Note any operational faults and refer to Section 4 fault nding as
necessary.
4. Check the operation of the DHW by opening the largest draw off. Note any operational faults and refer to Section 4 fault nding
as necessary.
Warning: Always isolate all service valves, switch off and disconnect the electrical supply to the appliance before servicing.
5. Check the DHW lter for blockage and clean out any material present (refer to Section 3.21).
6. Check the primary circuit strainer (refer to Section 3.6).
7. Check the primary circuit Δp as follows:
a. Unscrew caps on the pressure test points on the primary ow and return manifolds.
b. Connect a suitable high-water pressure measuring device to the appropriate pressure connections.
c. Set the instrument to measure differential pressure and set the units to kPa.
d. Open the largest DHW draw off and ensure the differential pressure is minimum 50kPa.
e. Turn the tap off and call for a heating demand and ensure the differential pressure is minimum 50kPa.
Note: Primary differential pressure below the nominal 50kPa will slightly reduce the output of this product.
IMPORTANT
1. After completing the servicing or exchange of components always ensure all hydraulic connections are watertight and ensure
all harness connections are connected as found.
2. When work is complete the front panel MUST be correctly retted.
3. Clean the Ideal System Filter (if tted). Refer to system lter installation & maintenance guide for correct method of servicing.
4. Complete the service section in the Commissioning Checklist.
SERVICING