Check Gas Pressure - Signature Command System; Electrical Wiring - Scs - Monessen Hearth MDV500, MDV600 Installation & Operating Instructions Manual

sIgnature command - checK gas pressure and electrIcal InstallatIon
1. Check gas type. The gas supply must be the same as
stated on the appliance's rating decal. If the gas supply
is different from the fireplace, stop! Do not install the
appliance. Contact your dealer immediately.
2. To ease installation, a 24" (610 mm) flex line with manual
shut-off valve has been provided with on this appliance.
Install and attach 1/2" gas line onto shut-off valve.
3. After completing gas line connection, purge air from
gas line and test all gas joints from the gas meter to the
fireplace for leaks. Use a solution of 50/50 water and
soap solution or a gas sniffer.
4. To check gas pressures at valve, turn captured screw
counter clockwise 2 or 3 turns and then place tubing
to pressure gauge over test point. Turn unit to high.
Figure 49. After taking pressure reading, be sure and
turn captured screw clockwise firmly to reseal. Do not
over torque. Check test points for gas leaks.
electrIcal wIrIng
general
1. This fireplace is equipped with the Signature Control
valve which operates on 6 volts. The 6 volt DC adapter
plugs into the fireplace junction box A/C power supply.
Four (4) "AA" batteries are used for back up during
power outages.
2. The Signature Command System can also be operated
without A/C power. The system can run on four (4) "AA"
batteries for approximately six (6) months under normal
use.
3. A/C power must be used to power the A/C module,
blowers, lights and AUX accessories if used with this
fireplace.
optional accessory requirements
1. This fireplace may be used with a wall switch, wall
mounted thermostat and/or Signature Command wire-
less controls.
2. The command center control may be mounted on the
wall with the use of the SCSWEK 15ft. wall mount exten-
sion kit.
75D2523
MDV Series Direct Vent Gas Fireplace
Pressure Outlet
Figure 49 -
Signature Command Valve
FP1909a
do not use open flame to check for gas
leaks.
signature command valve
alternate view
8/08
electrical connections should only
be performed by a qualified, licensed
electrician. main power must be off when
connecting to main electrical power supply
or performing service. all wiring shall be
in compliance with all local, city and state
codes. the appliance, when installed, must
be electrically grounded in accordance with
local codes or in the absence of local codes,
with the national electrical code ansI/nfpa
70 (latest edition) and canadian electrical
code, csa c22.1.
label all wires before disconnecting when
servicing controls. wiring errors can cause
improper and dangerous operation.
Pressure Inlet
FP1909a
Pilot Adjustment
Screw
35