Installation guide
(048) 60Hz COOLING CHARGING CHART
For use with units using R410a Refngerant
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125 52
115 ,_
185 4
95
85
75 21
% I
Fig. 29--Cooling Charging Chart, 50JZ 048 Un_=°°86
again turn off for an additional 30 sec and the outdoor fan for 40
sec. When the Quiet Shift is in OFF position, only a brief 30 sec
cycle will be observed.
If it is desirable to observe a complete defrost in warmer weather,
the defrost thermostat must be closed as follows.
1. Turn off power to outdoor unit.
2. Disconnect outdoor fan motor lead from OF2 on control board
(See Fig. 19). Tape to prevent grounding.
3. Restart unit in Heating mode, allowing frost to accumulate on
outdoor coil.
4. After a few minutes in Heating mode, liquid line temperature
should drop below closing point of defrost thermostat (ap-
proximately 30°F).
NOTE: Unit will remain in defrost until defrost thermostat
reopens at approximately 80°F coil temperature at liquid line or
remainder of defrost cycle time.
5. Turn off power to outdoor and reconnect fan motor lead to
OF2 on control board after above forced defrost cycle.
MAINTENANCE
To ensure continuing high performance, and to minimize the
possibility of premature equipment failure, periodic maintenance
must be performed on this equipment. This heat pump unit should
be inspected at least once each year by a qualified service person.
To troubleshoot unit, refer to Table 7.
NOTE TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
(0_O) 60 HZ COOLING CHARGING CHART
For use with units using R41Oa Refngerant
Fig. 30--Cooling Charging Chart, 50JZ 060 Un_i°°_7
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The ability to properly perform maintenance on this equip-
ment requires certain expertise, mechanical skills, tools and
equipment. If you do not possess these, do not attempt to
perform any maintenance on this equipment, other th,'m those
procedures recommended in the User's Manual FAILURE
TO HEED THIS WARNING COULD RESULT IN SERI-
OUS INJURY OR DEATH AND POSSIBLE DAMAGE TO
THIS EQUIPMENT.
could result in serious injury
or death:
I. Turn off electrlcal power to the unit before performing any
maintenance or service on this unit.
2. Use extreme caution when removing panels and parts. As
with any mechanical equipment, personal injury can result
from sharp edges.
3. Never place anything combustible either on. or in contact
with, the unit.
The minimum maintenance requirements for this equipment are as
follows:
I. Inspect air filterls) each month. Clean or replace when
necessary.
2. Inspect indoor coil. drain pan, and condensate drain each
cooling se_.son for cleanliness. Clean when necessary.
3. Inspect blower motor and wheel for cleanliness each cooling
season. Clean when necessary.
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