Raypak 106, Installation & Operating Instructions Manual

Page: 14 / 40

14
Pipe Sizing for Gas Connections
Water Connections
The heater requires water flow and positive pressure
to fire and operate properly. It must therefore be
installed downstream of the discharge side of the filter
pump. A typical installation is plumbed as follows:
1. The inlet side of the filter is plumbed directly to the
discharge side of the filter pump;
2. The outlet side of the filter is then plumbed to the
inlet of the heater; and
3. The outlet of the heater is plumbed to the return
line to the pool or spa. The pump, filter and heater
are thus plumbed in series.
Plumbing from the heater back to the pool or spa must
not have any valves or restriction that could prevent
flow when the pump is operating.
Heater must be located so that any water leaks will not
damage the structure of adjacent area. PVC pipe may
be glued directly into supplied CPVC header unions.
Flow Rates
Table G: Maximum Equivalent Pipe Length
Polymer Headers
Before attaching the supplied 2-inch (5 cm) CPVC
unions to the In/Out header, make sure the O-rings are
properly seated in the grooves. Use AquaLube or
equivalent non-petroleum-based lubricant on the O-
ring. Hand tighten the unions. Glue PVC or CPVC
piping directly to the unions.
Model No. Minimum Maximum
106/156 20 GPM (75 L) 70 GPM (265 L)
*When flow rates exceed maximum 70 GPM, an external auxiliary
bypass valve is required. See External Auxiliary Bypass Valve sec-
tion for details.
Table H: Water Flow Rates
In/Out Header
O-Ring
Tail Piece
Nut
2” Pipe
(5cm)
Drain Plug
In/Out Header
Hose Connector
Hose
Fig. 10: In/Out Header for 2" Installation
Fig. 11: Optional In/Out Header for 1-1/2" (3.8 cm)
or 1-1/4" (3.2 cm) Hose Connection
NAT LPG NAT LPG NAT LPG
105,000 BTU/hr 26 ft 65 ft 99 ft 252 ft 350 ft 892 ft
(30.8 kW) (8 m) (20 m) (30 m) (77 m) (107 m) (272 m)
150,000 BTU/hr 13 ft 34 ft 51 ft 130 ft 180 ft 459 ft
(43.9 kW) (4 m) (10 m) (16 m) (40 m) (55 m) (140 m)
* Natural Gas 1000 BTU/FT
3
0.60 Specific Gravity @ 0.5 in WC Pressure Drop
(Gaz Naturel 3154.5 W/m 3 0.60 Densité @ 0.124 kPa Pressure Drop)
* Propane Gas 2500 BTU/FT
3
1.53 Specific Gravity @ 0.5 in WC Pressure Drop
(Le Gaz Propane 7886.3 W/m
3
1.53 Densité @ 0.124 kPa Pressure Drop)
1/2 in. (1.27cm) 3/4 in. (1.91cm) 1 in. (2.54cm)
Model Tubing Input
Cu
Cu
106
156