Initial installation, Never use an open flame for leak testing – Enviro Haven Direct Vent Fireplace User Manual

Page 29

Initial Installation

INE

ONNECTION

AND

ESTING

WARNING: Only persons licensed to work with gas piping may make the necessary gas connections to

this appliance.
GAS LINE CONNECTION
• This fireplace is equipped with a certified flexible pipe located on the right side of the unit. This

flexline is connected to a shut-off ball valve, which terminates in a 3⁄8” female NPT fitting. The ball

valve can be located on the right or left side of the unit, or where the gas supply can enter through

the floor of the unit (see Figure 10). Consult your local authorities codes or the CAN/CGA B 149 (1 or

2) installation code in Canada, or in the USA gas installations follow either local codes or the current

edition of the National Fuel Gas Code ANSI Z223.1.

• The efficiency rating of this appliance is a product thermal efficiency rating determined under

continuous operating conditions and was determined independently of any installed system.

The appliance and its shutoff valves must be disconnected from

the gas supply piping system during any pressure testing where

the pressure exceeds 1⁄2 PSIG (3.45 KPa) or damage will occur

to the valve.
The appliance must be isolated from the gas supply piping

system by closing its individual manual shutoff valve during

any pressure testing of the gas supply piping system at test

pressures equal to or less than 1⁄2 psig (3.45 KPa).

Always check for gas leaks with a soap and water

solution after completing the required pressure

test.

TO TEST VALVE PRESSURES
The pressure taps are located on the top right of the valve shown in Figure 42.
• Turn set screw 1 turn counter clockwise to loosen,
• Place

” (8 mm) I.D. hose over pressure tap system.

• Check pressures using a manometer.
• When finished, release pressure, remove hose & tighten set screw.

Natural Gas

Propane

Main Orifice

#48 DMS

#57 DMS

Manifold Pressure

3.8” W.C. (0.95 KPa)

11.0” W.C. (2.74 KPa)

Min. Manifold Pressure

1.2” W.C. (0.28 KPa)

2.7” W.C. (0.67 KPa)

Max Supply Pressure

7.0” W.C. (1.74 KPa)

13.0” W.C. (3.28 KPa)

Min. Supply Pressure

5.0” W.C. (1.25 KPa)

12.0” W.C. (2.98 KPa)

Max BTU/hr Input 16,900 BTU/hr (4.95 KW)

14,500 BTU/hr (4.25 KW)

Min. BTU/hr Input 10,000 BTU/hr (2.93 KW)

7,500 BTU/hr (2.20 KW)

NEVER USE AN OPEN FLAME FOR LEAK TESTING.

L I

T O

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Figure 42: Fully Labeled Gas Valve.

Table 9: Pressure and BTU Information.