Table of Contents
Advertisement
between separate devices which are field installed and located, shall conform with
the temperature limitation for Type T wire [63°F rise (35°C)] when installed in accor-
dance with the manufacturer's instructions.
C. INTERNAL WIRING
A diagram of the internal wiring of this unit is located on the inside of control access
panel and in this manual. If any of the original wire as supplied with the appliance must
be replaced, the wire gauge and insulation must be same as original wiring.
Transformer is factory wired for 230 volts on 208/230 volt models and must be
changed for 208 volt applications. See unit wiring diagram for 208 volt wiring.
D. THERMOSTAT
The room thermostat must be compatible with the spark ignition control on the unit.
Generally, all thermostats that are not of the "current robbing" type are compatible with
the integrated furnace control. The low voltage wiring should be sized as shown in
Table 6.
Install the room thermostat in accordance with the instruction sheet packed in the box
with the thermostat. Run the thermostat lead wires through control entry opening
through the thermostat wiring chase on the unit (Figure 13) and connect to the low volt-
age thermostat connections (see wiring diagram). Never install the thermostat on an
outside wall or where it will be influenced by drafts, concealed hot or cold water pipes
or ducts, lighting fixtures, radiation from fireplace, sun rays, lamps, televisions, radios
or air streams from registers. Refer to instructions packed with the thermostat for
"heater" selection or adjustment.
See Thermostat Specification Sheet for recommended thermostats.
TABLE 6
FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS
3.0
16
2.5
16
2.0
18
50
(1) The total wire length is the distance from the unit to the thermostat
and back to the unit.
NOTE: DO NOT USE CONTROL WIRING SMALLER THAN NO. 18
AWG.
V. WATER CONNECTIONS AND START UP FOR
V.
POTABLE WATER HEATING
A. WATER PIPING
1. Use of copper pipe suitable for potable water is recommended. Plumbing must
meet applicable national and local plumbing and building codes.
2. The H
AC rooftop unit should be installed as close to the storage tank as possi-
2
ble to minimize heat loss from interconnecting piping.
FIGURE 15
ISOLATION/FLUSHING VALVE
SOLID COPPER WIRE - AWG.
14
12
10
14
12
12
16
14
12
100
150
200
250
Length of Run – Feet (1)
10
10
12
10
12
10
300
23
Advertisement
Table of Contents
Troubleshooting
