Modes Of Operation - McQuay PDAA Installation & Maintenance Data

Modes of Operation

Standard Digital Touchpad Control
Temperature Limit Settings
1 To adjust the lower operating temperature limit
(cool minimum set point) press and hold Fan
Mode button and adjust the setting with Up or
Down buttons. The minute setting is 60ºF (15ºC).
2. To adjust the upper operating temperature limit
(heat maximum set point) press and hold down
Fan Speed button and adjust the setting with Up
and Down buttons. The maximum setting is
85ºF (30ºC). When control selection is set for
"T'STAT," the maximum setting can go up to 90ºF
(32ºC).
3. The upper operating temperature limit will be
displayed first.
4. Default settings are: Cool minimum 60ºF (15ºC)
and Heat maximum 85ºF (30ºC).
Electrical Service
All wiring should be done in accordance with all
local and National Electrical Code requirements. The
conditioners are supplied as follows:
Electrical Heating Unit
1. 208V and 230V models are supplied with a power
cord which will exit from beneath the conditioner
on the control side. The cord has a usable length of
72" (457.2mm) from where it exits the conditioner.
The use of an extension cord is not recommended.
Time delay fuses are recommended to avoid
nuisance tripping. The receptacle is generally
mounted beneath the conditioner, on or recessed in
the wall so that it is concealed by the conditioner
over hang. The space under the conditioner must
be at least 3" (76mm) high.
2. An electrical subbase is available for 208V and
230V units and contains a junction box for a field
mounted receptacle All electrical connections are
made within the subbase, thus eliminating the
need for a wall mounted receptacle.
The subbase is available in 3" (76mm) or 4"
(102mm) height and can be furnished with factory
mounted fused disconnect option.
IM 934-2 Applied PDAA/PDHA / Page 26 of 44
3. On all 265V models, an electrical subbase is
required. The chassis is supplied with a "short
cord" which is just long enough to plug into the
subbase. A plug cord cover is also furnished with
the subbase to make the interconnecting cord
inaccessible as required by the National Electrical
Code. The conditioner is marked with the
minimum circuit ampacity and maximum
fuse size.
Equipment Start-up
Initial start-up of the Incremental
by experienced personnel is usually the responsibility
of the installing contractor. This start-up consist
of inspecting and operating the equipment for all
functions at the time of initial installation and making
necessary adjustments. It also includes demonstrating
its proper operation to the owner or his agent.
Note: that unless otherwise specifically agreed to in
writing, McQuay International includes no field
labor, start-up service or the like in the price of
its equipment.
After the equipment leaves the factory, it may
become damaged or maladjusted during transportation
or on the job. Sometimes wires are disconnected
accidentally or fan motors move on their bases due to
rough handling, causing fans to strike. The correction
of such conditions is part of start-up.
CAUTION
Before starting equipment, make certain that:
1. Correct voltage has been supplied to the equipment.
2. The electrical plug from the control box has been
inserted into the receptacle.
During Start-up (applies only to standard equipment):
Note: Direction of conditioner air may be adjusted
by repositioning the discharge grille to change
airflow pattern in a room. The building
superintendent or assistant manager should be
requested to make any changes.
conditioners
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