Suburban DynaPack S & H Series Owner's Manual 06/2020 Rev.2
12
WARNING - FIRE OR EXPLOSION HAZARD!
Failure to follow the safety warning exactly could result in serious injury, death, or property damage.
WARNING
Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically
for the detection of leaks to check all connections. A fire or explosion may result causing property damage,
personal injury, or loss of life.
2.6 ELECTRICAL CONNECTIONS
The Dynapack unit is approved using copper conductors only. See the unit data plate for unit minimum circuit ampacity. Size the wire
based on the unit circuit ampacity, type of wire used, and method of wiring, in conduit or open. If the electrical supply is 208 volt, then do
not exceed 2% voltage drop based on the length of wire run. See the National Electrical Code or the Canadian Electrical Code for more
information.
The typical electrical supply is two phase wires where voltage measured is 208-230 volts phase to phase. An additional wire for unit
grounding is required. See the unit data plate for the maximum fuse or circuit breaker size. It is recommended that time delay fuses or a
two pole HACR breaker be used in order to prevent nuisance trips.
Alternately, the Dynapack unit may be wired with one phase wire where the voltage measured is 208-230 volts phase to neutral. In this
case, the phase wire should be connected to L1 on the contactor. An additional wire for unit grounding is required.
On 208 volt systems the transformer wiring needs to be changed. Swap the red transformer wire for the orange wire for 208 volt operation.
A disconnect should be installed next to the unit so the electrical power can be turned off for servicing or maintenance.
2.7 CONTROL WIRING
The room thermostat should be installed on an interior wall and near the return air for the unit. It is recommended that a 5 conductor
thermostat wire be used in case the room thermostat needs power from the unit transformer.
The low voltage pigtails for the thermostat wiring must be routed to the outside of the Dynapack unit for connection. The Dynapack unit
contains a second knockout above the control box for this purpose. The National Electrical Code requires that low voltage wiring be kept
separate from high voltage wiring and cannot be routed through the same knockout or conduit. Local codes may also require that an
electrical box be installed on the low voltage knockout to contain the electrical connections.
Follow the thermostat manufacturers instructions for mounting and wiring. The low voltage is grounded inside the unit control box. See
the attached wiring diagram on page 8.
VALVE ON/OFF SWITCH
INLET PRESSURE POST.
TEST HOSE GOES OVER
OUTSIDE OF POST.
USE
3
32
" HEX WRENCH
TO OPEN ONE TURN.
OUTLET PRESSURE POST.
TEST HOSE GOES OVER
OUTSIDE OF POST. USE
3
32
" HEX WRENCH TO OPEN
ONE TURN.
INLET
1
2
" NPT
REGULATOR ADJUSTMENT
BENEATH THIS SCREW COVER
Figure 10
