Gas Specifications; Gas Inlet And Manifold Pressures; High Elevations; Gas Line Installation - Vermont Castings 36CDVZRRN Installation Instructions And Homeowner's Manual

Gas Specifications

Model Fuel Gas Control
36CDVZRRN Nat
36CDVZRRP* Prop
36CDVZTRN Nat
36CDVZTRP* Prop
*Using conversion kit

Gas Inlet and Manifold Pressures

Inlet Minimum
Inlet Maximum
Manifold Pressure

High Elevations

Input ratings are shown in BTU per hour and are
certified without deration for elevations up to 4,500
feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installations must be in accordance with the cur-
rent ANSI Z223.1/NFPA 54 and/or local codes having
jurisdiction.
In Canada, please consult provincial and/or local
authorities having jurisdiction for installations at
elevations above 4,500 feet (1,370 m).

Gas Line Installation

When purging the gas lines, the front window
frame assembly must be removed.
The gas pipeline can be brought in through the rear of the
appliance as well as the bottom. Knockouts are provided
on the bottom behind the valve to allow for the gas pipe
installation and testing of any gas connection. It is most
convenient to bring the gas line in from the rear right side of
the valve as this allows fan installation or removal without
disconnecting the gas line.
The gas line connection can be made with properly tinned
3/8" copper tubing, 3/8" rigid pipe or an approved flex con-
nector. Since some municipalities have additional local
codes, it is always best to consult your local authority and
the National Fuel Gas Code, ANSI Z223.1/NFPA 54 in the
USA or the CSA-B149.1 installation code.
Always check for gas leaks with a mild soap
and water solution. Do not use an open flame
for leak testing.
20014621
Max. Min.
Input Input
BTU/h BTU/h
Millivolt 21,000 14,700
Millivolt 21,000 15,750
Millivolt 21,000 14,700
Millivolt 21,000 15,750
Natural LP (Propane)
5.5" w.c. 11.0" w.c.
14.0" w.c. 14.0" w.c.
3.5" w.c. 10.0" w.c.
CDVZ Series Direct Vent Gas Fireplace
1/2" Gas Supply
FP297A
Fig. 7 Typical gas supply installation.
The gas control is equipped with a captured screw type
pressure test point, therefore it is not necessary to provide
a 1/8" test point up stream of the control.
When using copper or flex connector use only approved
fittings. Always provide a union when using black iron pipe
so the gas line can be easily disconnected for burner or
fan servicing. See gas specification for pressure details
and ratings.
The fireplace valve must not be subjected to any test pres-
sures exceeding 1/2 psi. Isolate or disconnect this and
any other gas appliance control from the gas line when
pressure testing.

Remote ON/OFF Switch

Installation
1. Carefully unwrap the remote wire that is attached to the
valve. There are two 1/2" (13 mm) knockouts, one on
each side of the outer casing.
2. Remove the knockout desired and insert the plastic
snap bushing on the remote wire in the 1/2" hole. Feed
the remote wire through the outer casing.
3. Attach the wire to an ON/OFF switch (not supplied) and
install the switch into the receptacle box. (Fig. 8)
Remote ON/OFF Switch
or Thermostat
or Remote Control
Fig. 8 Remote switch wiring diagram.
Do not wire the remote ON/OFF wall switch
FP1224
for the gas fireplace to the 120 volt power
Remote switch
supply.
11/02
1/2" NPT x 1/2" Flare Shut-
off Valve
3/8" Flex Line
(From Valve)
FP297A
INSTA VENT FREE
UVHB26 GAS SUPPLY
7/1/98
TP
TH
Gas
Control
TP
Valve
TH
FP1224
9