8
2.0 SERVICE CONNECTIONS
PLUMBING CONNECTIONS
WARNING: Plumbing connections must comply with applicable
sanitary, safety, and plumbing codes.
WATER SUPPLY CONNECTION
The incoming cold water supply connection, at the rear of the steamer cabinet, requires
3/8" tubing and water pressure of 25-50 psi. A manual shut-off valve must be provided
convenient to the appliance; this valve should be open when the boiler is in operation.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER
QUALITY IS NOT COVERED UNDER WARRANTY. SEE WATER QUALITY
STATEMENT, PAGE 4.
DRAIN CONNECTION
The steamer drain (2" IPS) should be piped to a floor drain near the steamer. There
should be no solid drain connection; an “open gap” between the steamer and the floor
drain is required.
GAS CONNECTION
1. The data plate on the cabinet door of the boiler indicates the type of gas your unit is
equipped to burn. DO NOT connect to any other gas type.
Keep the appliance area free and clear from combustible substances. Do not
obstruct the flow of combustion and ventilation air.
2. A 3/4" NPT line is provided at the rear for the connection. Each boiler is equipped
with an internal pressure regulator which is set at 3.5" W.C. manifold pressure for
natural gas or 10.5" W.C. for LP gas. Use the 1/8" pipe tap on the burner manifold
for checking pressure.
An adequate gas supply is necessary. Undersized or low pressure lines will restrict the
volume of gas required for satisfactory performance. A steady supply pressure, between
7" W.C. and 14" W.C. for natural gas and 11" W.C. and 14" W.C. for propane gas is
recommended. With all units operating simultaneously, the manifold pressure on all
units should not show any appreciable drop. Fluctuations of more than 25% on natural
gas, and 10% on propane gas, will create pilot problems and affect burner operating
characteristics.
