TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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26
Insufficient Hot Water - Chart 3.1
3.1
AS/NZS 3500 Part 4 only requires fixtures used for
ablution purposes to be tempered.
If practical a 2 zone plumbing solution may be offered.
NO
Tempering valves are generally set to
deliver water at 48 - 50 degrees
Depending on the length of pipe work and
insulation to the fixture(s), water
temperature can be lower due to heat loss
Normal Operation
Is the
outlet water
temp from the TLD
approx. 48
degrees?
YES
Clean or replace
YES
Are
the filters
blocked?
Refer to TLD manufacturers instructions
Replace Tempering Valve
NO
Has there
been a recent
large draw off of hot
water?
Typically the hot inlet temperature to the
tempering valve must be 10 degrees higher
than the required outlet temperature.
Confirm a recent large draw off had not
depleted the hot water supply temperature
Advise customer to allow time for heater to
recover
YES
NO
2 Zone Plumbing